Sensus Metering Systems MXU530T Radio Transceiver for Electric Meter User Manual Technical Manual

Sensus Metering Systems Radio Transceiver for Electric Meter Technical Manual

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Technical Manual iCon APX Advanced Functionality Meter TM-iX0A-0805 1.0

Technical Manual for the iCon APX Advanced Functionality Meter TM-iX0A-0805 1.0

Table of Contents i Table of Contents CHAPTER 1 Introduction Overview................................................................................................................................................ 1-1 Purpose............................................................................................................................................... 1-2 Safety ................................................................................................................................................. 1-2 Manual Conventions .............................................................................................................................. 1-2 Additional Information Sources......................................................................................................... 1-2 Notational Conventions...................................................................................................................... 1-3 Hexadecimal Values....................................................................................................................... 1-3 Ranges............................................................................................................................................ 1-3 Register Notation and Usage.......................................................................................................... 1-3 Applicable Standards ......................................................................................................................... 1-4 CHAPTER 2 Meter Overview iCon APX Meter .................................................................................................................................... 2-1 Accuracy ............................................................................................................................................ 2-1 Reliability........................................................................................................................................... 2-1 Expandability ..................................................................................................................................... 2-1 Tamper Resistance ............................................................................................................................. 2-1 System Architecture............................................................................................................................... 2-2 Hardware............................................................................................................................................ 2-3 Meter Base Assembly .................................................................................................................... 2-3 Register Cover Assembly............................................................................................................... 2-7 Meter Cover ................................................................................................................................. 2-14 Metering Capabilities........................................................................................................................... 2-15 Display Lists .................................................................................................................................... 2-16 Normal Display List..................................................................................................................... 2-16 Alternate Display List .................................................................................................................. 2-16 Test Display List .......................................................................................................................... 2-16 Diagnostic Display List................................................................................................................ 2-17 Security ............................................................................................................................................ 2-18 CHAPTER 3 Operation Hardware Setup...................................................................................................................................... 3-1 All Meters .......................................................................................................................................... 3-1 Self-Contained Meters ................................................................................................................... 3-2 Calibration Check .............................................................................................................................. 3-2 Testing............................................................................................................................................ 3-3 IR Test Pulse LED Background..................................................................................................... 3-4 Display Board Check ......................................................................................................................... 3-5

Table of Contents TM-iX0A-0805 1.0 Test Mode .......................................................................................................................................... 3-5 Test Mode Operation ..................................................................................................................... 3-6 Installation.............................................................................................................................................. 3-6 Meter Power-Up................................................................................................................................. 3-7 Configuring APX Meters ....................................................................................................................... 3-8 Identification .................................................................................................................................. 3-9 Metering Constants ........................................................................................................................ 3-9 Diagnostics and Alarms ............................................................................................................... 3-10 History Logs................................................................................................................................. 3-11 Special Features ........................................................................................................................... 3-11 CHAPTER 4 Servicing the iCon APX Meter Meter Communication ........................................................................................................................... 4-1 Infrared Port ....................................................................................................................................... 4-1 Remote Communications................................................................................................................... 4-1 Updating the Firmware .......................................................................................................................... 4-1 Resetting the Meter ................................................................................................................................ 4-1 Troubleshooting ..................................................................................................................................... 4-2 Visual Check ...................................................................................................................................... 4-2 Installation Check .............................................................................................................................. 4-3 Shop Testing ...................................................................................................................................... 4-3 Diagnostic Checks.............................................................................................................................. 4-3 Replacement – Basic Components......................................................................................................... 4-4 Replacement of the Meter Cover ....................................................................................................... 4-5 Removing the Meter Cover............................................................................................................ 4-5 Installing the Meter Cover ............................................................................................................. 4-6 Replacement of the Register Cover.................................................................................................... 4-6 Removing the Register Cover ........................................................................................................ 4-7 Installing the Register Cover.......................................................................................................... 4-8 Replacing the Interconnect Board...................................................................................................... 4-9 Removing the Interconnect Board .................................................................................................4-9 Installing the Interconnect Board................................................................................................. 4-10 Replacing the Register Display Board ............................................................................................. 4-11 Removing the Register Display Board......................................................................................... 4-11 Installing the Register Display Board .......................................................................................... 4-12 CHAPTER 5 Theory of Operation Metrology............................................................................................................................................... 5-1 Sensors ............................................................................................................................................... 5-1 Current Sensor................................................................................................................................ 5-1 Voltage Sensor ............................................................................................................................... 5-2 Inputs.................................................................................................................................................. 5-2 Power Calculations ............................................................................................................................ 5-2 Watts and Watt-Hours.................................................................................................................... 5-2

Table of Contents iii kVA/kVAR Calculations ............................................................................................................... 5-3 Data Transfer...................................................................................................................................... 5-3 Calibration.......................................................................................................................................... 5-3 Register Display Board .......................................................................................................................... 5-3 Main Microprocessor ......................................................................................................................... 5-3 Non-Volatile Memory........................................................................................................................ 5-4 Power Supply ......................................................................................................................................... 5-4 Demand Metering................................................................................................................................... 5-4 Demand .............................................................................................................................................. 5-4 Block .............................................................................................................................................. 5-4 Sliding ............................................................................................................................................ 5-5 Peak................................................................................................................................................ 5-5 Cumulative ..................................................................................................................................... 5-5 Continuous Cumulative.................................................................................................................. 5-5 Demand Reset .................................................................................................................................... 5-5 Outage Recognition............................................................................................................................ 5-6 Demand Forgiveness Time ................................................................................................................ 5-6 Self Read ............................................................................................................................................ 5-6 Coincident Values .............................................................................................................................. 5-6 Primary/Secondary Metering ............................................................................................................. 5-6 APPENDIX A Socket Wiring Form 8S................................................................................................................................................. A-1 Form 9S................................................................................................................................................. A-1 Form 14S............................................................................................................................................... A-2 Form 15S............................................................................................................................................... A-2 Form 16S............................................................................................................................................... A-2 Form 17S............................................................................................................................................... A-3 APPENDIX B Specifications Meter Specifications ..............................................................................................................................B-1 Operating............................................................................................................................................B-1 Environmental....................................................................................................................................B-1 Maximums .........................................................................................................................................B-1 Input ...................................................................................................................................................B-2 Physical Dimensions ..........................................................................................................................B-2 APPENDIX C Alarms, Diagnostics, and Errors Codes......................................................................................................................................................C-1 Alarm .................................................................................................................................................C-2 Diagnostic ..........................................................................................................................................C-4 Error ...................................................................................................................................................C-4

Introduction Overview Version 1.0 Introduction 1-1 Chapter 1 The iCon™ APX Advanced Functionality Meter is a commercial-grade, electricity meter. By analyzing information from the metering industry, Sensus Metering Systems has developed a new, configurable meter designed to meet the demands of commercial metering. Figure 1-1: iCon APX Advanced Functionality Meter Overview This manual provides technical and support information for the iCon APX meter: • Socket: Form 9S (8S) 20 Amp • Socket: Form 16S (14S, 15S, 17S) 200 Amp

Manual Conventions Introduction 1-2 Introduction TM-iX0A-0805 Purpose The purpose of this manual is to provide: • Physical descriptions of the APX meters. • Descriptions of fixed and optional features. • A reference for meter set up, operation, troubleshooting, and maintenance. This document is intended for technically qualified personnel of energy supply companies and their contractors who are responsible for the system planning, installation, commissioning, operation, maintenance, decommissioning, and/or disposal of meters. Safety Hazardous voltages are present while power is applied to meters, meter sockets, or other metering equipment. Any work on the energized equipment presents the danger of electrical shock and can result in death or serious injury. The information contained within this manual is intended to be an aid to qualified metering personnel. It is not intended to replace the extensive training necessary to handle metering equipment in a safe manner. Use extreme care when servicing the meter while power is applied. Qualified electricians and metering specialists, in accordance with local utility safety practices and utility requirements, should perform all work on this product with extreme care. Failure to comply with this caution can result in the destruction of or damage to the equipment and/or permanent loss of stored data.. All industry safety precautions must be observed during all phases of operation, service, and servicing of the meters. Failure to comply with these precautions or with specific warnings in this manual violates safety standards of design, manufacture, and the intended use of the metering instrument. Sensus Metering Systems assumes no liability for the customer’s failure to comply with these requirements. Manual Conventions This section provides additional information that may be required for meter configuration and maintenance purposes. Additional Information Sources • Handbook for Electricity Metering, 10th Edition, Edison Electrical Institute • Requirements for Watthour Meter Sockets, ANSI C12.7-1993

Introduction Manual Conventions Notational Conventions Hexadecimal Values Hexadecimal values in this manual are expressed as follows: • Values that are in hexadecimal notation are shown as two or four (4) characters followed by the letter "h.” Each character can have a value from 0 through F. For example, 9C3Fh • All other numbers are in decimal notation. Ranges Ranges, or parameters, expressed in this manual are expressed a pair of values separated by ellipses. For example, 0…5 include numbers 0 and 5 and all of the values in between. Register Notation and Usage Registers are a part of the meter memory that contains the addresses that are used to hold specific kinds of information. The following registers are contained in the APX meter. The information stored in these registers is usually configured using the iConFig application software. Billing Registers The APX meter contains two Billing Registers. The Billing Registers store: • Selected consumption readings • The associated Maximum Demand readings • The associated Cumulative Demand or Continuously Cumulative Demand. Previous Demand Registers The Previous Demand registers contain a snapshot of the Billing Registers captured during the last Demand Reset. Any data in these registers is overwritten during the reset. Status Register The status register store meter dependent information (e.g., Low Battery, Meter errors, Demand overloads) History Log Register The History Log registers store data for selected events that may occur during meter operation. More than 40 different events can be recognized and the results stored in these registers. Version 1.0 Introduction 1-3

Manual Conventions Introduction 1-4 Introduction TM-iX0A-0805 Applicable Standards The iCon APX meter meets or exceeds the ANSI standards for commercial and industrial electricity metering. Table 1-1: Applicable Standards ANSI C12.1 – 2001 American National Standard Code for Electricity Metering ANSI C12.13-1991 American National Standard Code for Electronic Time-of-Use Registers for Electricity Meters ANSI C12.18-1996 American National Standard Code for Protocol Specification for ANSI Type 2 Optical Port *ANSI C12.19 - 1997 American National Standard Code for Utility Industry End Device Data Tables *ANSI C12.20 – 2002 American National Standard Code for Electricity Meters 0.2 and 0.5 Accuracy Classes ANSI C12.21-1999 American National Standard Code for Protocol Specification for Telephone Modem Communication ANSI/IEEE C37.90 –1989 IEEE Standard Surge Withstand Capability (SWC) for Protective Relays and Relay Systems * - The iCon™ APX conforms to the standards, however the meters are not governed by them.

Meter Overview iCon APX Meter Version 1.0 Meter Overview 2-1 Chapter 2 iCon APX Meter The iCon™ APX Advanced Functionality Meter continues to use same field-proven Sentec® sensor technology found in the other meters in the iCon family. Accuracy The APX meter is built with a backbone of precision that exceeds ANSI C12.20 standards for accuracy. Reliability The iCon APX meter uses a simple, unique modular design that meets the most stringent performance requirements for revenue billing applications. This construction reduces the number of connections thereby reducing the possibility of false data or metering related problems. Expandability Like the iCon meter, the APX meter employs an open architecture design that allows for easy and cost effective AMR integration. The APX meter was designed with this idea in mind. Tamper Resistance Since there are no moving parts, the APX meter is not vulnerable to the tampering methods (e.g., using magnets, inserting foreign objects into the gears, inverting the meter in the socket) used to affect electromechanical meters.

Meter Overview System Architecture Hardware The basic components of the meter are shown in Figure 2-2. Figure 2-2: iCon APX Meter Components Meter Base Assembly The Meter Base Assembly consists of the Meter Base, the Sensor Board, and related hardware. Figure 2-4 shows the Sensor Board in the Meter Base. There are no field-serviceable parts in the Meter Base Assembly. Figure 2-3: Meter Base Assembly Meter Base The Meter Base is molded from highly durable thermoplastics. It provides a stable platform for the Sensor Board. In addition to the components described in this section, it contains the hangar for mounting the meter, and the T-Bar for meter security. Version 1.0 Meter Overview 2-3

System Architecture Meter Overview 2-4 Meter Overview TM-iX0A-0805 Figure 2-4 through Figure 2-6 provide views of the available APX meter Forms. Figure 2-4 shows a transformer rated Form 9S (8S) Meter Base. Figure 2-4: Form 9S (8S) Meter Base Figure 2-4 shows a Form 16S (14S, 15S, 17S) Meter Base. Figure 2-5: Form 16S (14S, 15S, 17S) Meter Base

Meter Overview System Architecture For self-contained meters, there is an optional Phantom Load version of the Meter Base. Figure 2-6 shows a Form 15S/16S Meter Base with the Phantom Load (closed position). Figure 2-6: Form 15S/16S Meter Base - Optional Phantom Load All meter bases provide knockouts for the option boards. Figure 2-7: Meter Base – Option Board Knockouts Version 1.0 Meter Overview 2-5

System Architecture Meter Overview 2-6 Meter Overview TM-iX0A-0805 Sensor Board The Sensor Board is a part of the Meter Base Assembly and consists of the sensing circuitry, buss bars, power supply, and connector ports. There are no field serviceable components in the base assembly. The module: • Senses all of the voltages and currents for all phases passing through the meter • Provides the DC power for the rest of the meter • Contains the data of all of the sampled energy and voltages • Supports reading of the sampled data by the Register Display Board • Holds the calibration information stored in EEPROM Buss Bars — The buss bars are conducting blades that carry the load current from the service socket to the load. In self-contained meters, the buss bars provide the voltage inputs to the metrology and provide power to the meter’s internal power supply. Sensing Circuitry — The primary components include a patented linear current sensor and integrated circuitry specifically designed for poly-phase electricity metering. The ADE7758 is a 24-pin, poly-phase, energy measuring, integrated-circuit chip with a serial interface and pulse outputs. This chip measures/calculates the following values: • Active Energy - Wh • Reactive and Apparent Energy – VARh and VAh • RMS Voltages • RMS Currents • Temperature The chip is suitable for three-phase, three-wire and/or three-phase, four-wire Delta or Wye services. This chip stores the measurement samples of each quantity and supports read operations by the Register Display Board. Switching Power Supply — The power supply is a true, three-phase, surge protected, auto-ranging (96 VAC to 576 VAC) power supply. It accepts voltages present at the service socket and provides DC power for the rest of the meter. The power supply functions even with power present on only one phase. Connector Ports — The Connector Ports provide the physical links to the Sensor Board for the Interconnect Board and the Option Cards.

Meter Overview System Architecture Register Cover Assembly The Register Cover Assembly consists of: • Register Cover • Register Display Board • Interconnect Board • Option Boards Figure 2-8: Register Cover Assembly – Exploded View Version 1.0 Meter Overview 2-7

System Architecture Meter Overview 2-8 Meter Overview TM-iX0A-0805 Register Cover The Register Cover is an opaque shield that protects the meter’s internal components from external tampering and serves as the mounting surface for the labels. The cover also contains ‘pockets’ to house batteries that maintain the DC voltage for circuitry required to function during an outage; such as the RTC. Except for the Optical Port Shield, LCD, TEST tab, RESET tab, and ALT tab, no internal components can be viewed through the Register Cover. Figure 2-9: Register Cover Labels The meter has labels on the Register Cover. The Nameplate, and Warning Label are on all Register Covers. If an AMR module is installed, an FCC Label will be present. Upper and Lower Nameplate Labels The upper and lower labels are compliant with the ANSI C12.10 – 1997 standard and may include: • Meter: ▪ Style Number ▪ Current class ▪ Form ▪ Service type ▪ Kh value ▪ Test Amps ▪ Accuracy Class

Meter Overview System Architecture • Operating: ▪ Voltages ▪ Frequencies • A unique meter identifier • Descriptive information Meter information required by the utility • Factory-generated bar code for the: ▪ Meter ID ▪ Test board Warning Label The Warning Label contains a multi-lingual message on the hazards and potential consequences of working on energized equipment. FCC Label The FCC Label is affixed to the Register Cover and may: • Contain patent and part numbers • Provide relevant FCC Part 15 compliance information • Describe the operating conditions • Provide additional compliance information pertaining to an optional RF AMR module installed in the meter The following Note applies to iCon APX meters containing the Sensus MXU Model 530-T RF AMR module. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This device contains FCC ID: KCHMXU530T / IC: 2220A-MXU530T. CAUTION: Changes or modifications not expressly approved by Sensus Metering Systems could void the user's authority to operate the equipment. Version 1.0 Meter Overview 2-9

System Architecture Meter Overview 2-10 Meter Overview TM-iX0A-0805 Register Display Board The Register Display Board (display board) consists of a Liquid Crystal Display (LCD), Alternate Mode button, Demand Reset button, Test Mode button, three option-board connections, and an optical port consisting of one (1) infrared LED and one (1) infrared LED sensor. Figure 2-10: Register Display Board The display board • Includes connectors for plugging in the option boards and Interconnect Board • Periodically reads data contained within the ADE7758 chip on the Sensor Board • Parses the data into the different billing quantities • Communicates the results of calculations by way of the LCD and/or remote communication ports • Manages the remote communication ports: ▪ ANSI C12-18, Type 2 compliant Optical Port ▪ RS-232 or RS-485 ▪ Ethernet/Modem connection ▪ Third-party communication boards • Stores the following data in non-volatile, flash memory: ▪ Meter firmware ▪ Meter status ▪ History Log ▪ The configuration program created with iConFig™ ▪ Billing information

Meter Overview System Architecture Liquid Crystal Display The LCD provides meter reading and test information. The information on the LCD is visible in direct sunlight and can be read at angles of 15 degrees above and below the LCD centerline. Figure 2-11 shows the LCD’s Annunciators and Displays. Figure 2-11: LCD Annunciators, Displays, and Indicators Annunciators Annunciators are composed of LCD segments that can be enabled/disabled to display the following meter conditions and measurements. ALT (Alternate List) — This Annunciator illuminates when the meter shows the values from the Alternate Display List. No measurements are affected while in this display mode. TST (Test List) — This Annunciator illuminates when the meter is in Test Mode. REM (Remote Communications) — This Annunciator illuminates when the meter detects outside connections to the meter on any of its communication ports. EOI (End of Interval) — This Annunciator illuminates at the end of every Demand Interval. The Annunciator remains illuminated for four (4) seconds and then extinguishes. BATT (Battery) — When the meter contains a Real-Time-Clock (RTC) battery, this Annunciator illuminates when the meter detects the installed battery’s useful life is at or below 15 percent. PREV (Previous) — When configured and the meter contains previously stored billing data, this Annunciator illuminates when the Data Display is showing previous billing data. AVG (Average) — When configured, this Annunciator illuminates when the LCD is showing the average system voltage or current. MAX (Maximum), CONT (Continuously), CUM (Cumulative) — These Annunciators illuminate when the LCD shows Peak Demand quantities. When configured, the MAX (Peak Demand), the MAX and CUM (Cumulative Peak Demand), or MAX, CONT, and CUM (Continuously Cumulative Peak Demand) Annunciators illuminate. RATE A, B, C, D, E — When configured for Time-of-Use (TOU), the RATE Annunciator and one of the alphabetic Annunciators illuminate when the Data Display shows the applicable rate information. The displayed information is configured from the Switch Times tab of the TOU / Calendar module of iConFig. Version 1.0 Meter Overview 2-11

System Architecture Meter Overview 2-12 Meter Overview TM-iX0A-0805 M (Mega) — This Annunciator illuminates when the value shown by the Data Display is one million of a specified unit. k (kilo) — This Annunciator illuminates when the value shown by the Data Display is one thousand of a specified unit. V (Volts), W (Watts) — The W consists of two V-shaped Annunciators. When one Annunciator is illuminated, it appears as the letter V. When both Annunciators are illuminated, they appear as the letter W. These Annunciators illuminate when the value shown by the Data Display is either Volts or Watts. A (Amperes), R (Reactive) — These Annunciators can be used in conjunction with the V Annunciators. They illuminate when the value shown by the Data Display is as follows: • VA = Voltamperes • VAR - The product of the total Voltamperes and the sine of the angle between current and voltage. h (Energy) — This Annunciators illuminates when the Data Display is showing an integrated quantity. PF (Power Factor) — This Annunciator illuminates when the value in the Data Display shows a power factor value. Power factor values are calculated based upon the integrated quantities the meter is configured (either factory default or with the iConFig application) to accumulate. DEL (Delivered), REC (Received) — These Annunciators illuminate when the value in the Data Display shows the contents of the related Delivered or Received billing registers. These Annunciators do not indicate whether the actual power flowing through the meter is delivered or received. A, B, C (Per Phase Quantity) — These Annunciators illuminate when the value in the Data Display is for the detected phase. When all Annunciators are extinguished, the quantity is for all three phases. Displays and Indicators ID Code Display — When configured, this three-digit identifying code is displayed simultaneously with an item shown in the Data Display area. (typically, a unique code is configured for each Data Display item). 120, 277, 240, 480 (Service Voltage Indicators) — The meter detects the nominal service voltage during power up and illuminates the display of the detected voltage. If the nominal service voltage cannot be determined (as a result of an incorrectly wired socket, for example), all Service Voltage Indicators are illuminated. Voltage Potential Indicators — Illuminate when voltage is present in those phases Quadrant Indicators — Illuminate to show the direction of the power presently flowing through the meter and whether the power factors are leading or lagging. The quadrants are defined as follows: • Quadrant 1 (lagging) – Wh and VARh delivered to the customer. • Quadrant 2 (lagging) – Wh received from the customer and VARh delivered to the customer. • Quadrant 3 (leading) – Wh and VARh received from the customer. • Quadrant 4 (leading) – Wh delivered to the customer and VARh received from the customer.

Meter Overview System Architecture Meters that do not have Reactive or Apparent energy measurements enabled will only be able to indicate the direction of the kWh energy. These meters will illuminate Quadrant 1 and Quadrant 4 to indicate energy flowing to a customer and Quadrant 2 and Quadrant 3 to indicate energy received from a customer. Data Display — The Data Display is composed of LCD segments that can display letters, digits, and symbols. The values can be configured as follows: • Energy, Demand and Power Factor Values: ▪ Display formats: kilo (103), Mega (106), or unity (100) ▪ Display values of up to five (5) digits ▪ Display up to three (3) decimal places • Date Format ▪ MM-DD-YY ▪ DD-MM-YY ▪ YY-MM-DD • Time can be displayed in either 12-hour or 24-hour formats as hh:mm:ss • A minus (-) sign can be displayed for negative net values Disk Simulator —The Disk Simulator is an eight-segment bar that is under the Data Display. In normal operating conditions, the Disk Simulator appears to move from left to right (delivered power) and increments once depending upon the Kh value. In reverse power conditions, it appears to move from right to left. Buttons Alternate Mode Activating this button manually changes the meter from its present mode to display and scroll through the Alternate Display Register List that was configured through iConFig. Also, while in Test Mode, this button allows you to scroll through the Test Mode Display List items. Demand Reset Activating this button causes the meter to: • Store a copy of all billing register data to the Previous Demand register. • Add the present Peak Demand values to their associated Cumulative Demand values. • Resets the Peak Demand value to zero (0). Test Activating this button manually changes the meter from its present mode to Test Mode. Pressing and holding this button for three seconds causes the meter to enter ‘Test Lock’. See “Test Mode Lock” below. Infrared LED and Sensor The infrared LED, sensor, and supporting circuitry combine to make up the electronics of an ANSI Type 2 optical port. The signal levels conform to the ANSI C12.18-1996 Protocol Specification for ANSI Type 2 Optical Port. Version 1.0 Meter Overview 2-13

System Architecture Meter Overview 2-14 Meter Overview TM-iX0A-0805 Connector Ports The Register Display Board contains connector ports for option boards and the Interconnect Board. Figure 2-12 shows the locations of the connector ports. Figure 2-12: Register Display Board Connector Ports Interconnect Board The interconnect board provides a physical path for data and power supply signals from the Sensor Board in the Meter Base Assembly to the Register Display Board. Option Boards To ensure client satisfaction, the APX meter is designed to support additional features and upgrades through the incorporation of option boards which connect to Option Ports A, B, and C. Visit to the Sensus website for more information on these boards as more become available. Meter Cover The Meter Cover: • Provides: ▪ Protection from the weather and other contaminants ▪ A clear view of the LCD and Labels located under the cover ▪ An integrated ANSI Type 2 Optical port ▪ Access to the RESET and ALT switches by way of a sealable RESET/ALT Lever • Limits unauthorized access to the internal switches, components, and buttons.

Meter Overview Metering Capabilities Figure 2-13: Meter Cover After final set-up and calibration of the meter at the factory, the Meter Cover and Meter Base Assembly are sealed with a T-Bar. The RESET/ALT Lever can also be sealed using an industry-standard Demand Reset Seal. Broken or missing seals provide evidence of possible tampering. Metering Capabilities The APX meter is capable of a wide range of measurements and calculations based on the needs of the customer. This section provides some descriptions of the configurable settings in the APX meter. The APX meter can be configured to provide the average value of power, or related quantity, over a specified period of time (Demand metering). The LCD displays the results in the form of kW, kVAR, or kVA. Demand parameters are stored in the meter and control events such as: • The length of the: ▪ Demand Interval ▪ Demand Subinterval ▪ Test Mode Demand Interval ▪ Test Mode Demand Subinterval • Whether or not to use: ▪ Demand Forgiveness ▪ Outage Recognition time ▪ Demand Reset Lockout Period Version 1.0 Meter Overview 2-15

Metering Capabilities Meter Overview 2-16 Meter Overview TM-iX0A-0805 Display Lists The meter maintains up to four (4) display lists. The contents of each list and the order in which items appear is configured using iConFig. Each list item is displayed as the meter scrolls through the list depending upon the meter’s operating Mode. Normal Display List When the meter is in Normal Mode, the Normal Display List is displayed. This list usually contains quantities and data used for customer billing and is the default list displayed when power is restored (unless the Test Lock feature has been activated – see “Test Mode Lock” below). This list is displayed after exiting any of the other modes. In this mode, the meter automatically scrolls through the configured List Items at the configured rate. Alternate Display List When the meter is in Alternate Mode, the Alternate Display List is displayed. This list usually contains information that is not normally used for customer billing (e.g., site surveys, debugging the meter, marketing information, future equipment planning). This list is displayed when the meter is in Normal Mode and the ALT button is pressed or by way of remote commands from iConFig. In this mode, the meter automatically scrolls through the configured List Items at the configured rate. The meter automatically exits Alternate Mode after the configured timeout expires. When the timeout is set to zero (0), it will remain in Alternate Mode until the power is removed. To exit Alternate Mode, press the ALT button again or by way of remote commands using iConFig. Test Display List When the meter is in Test Mode, the Test Display List is displayed. This list usually contains the quantities and data that can be used to verify meter calibration. This list is displayed when the meter is in Normal Mode or Alternate Mode and the TEST button is pressed or using remote commands from iConFig. Upon entering Test Mode, the TST Annunciator on the LCD illuminates, and the meter: • Suspends regular metering • Stores all of the billing data into non-volatile memory • Resets all of the Energy and Demand values to zero (0) In Test Mode, the measured quantities are stored in the Test Mode registers and not in the customer-billing registers. Use the RESET button to set all of the metering and demand quantities in the Test Mode registers back to zero (0) and the ALT button to manually scroll through the items in the Test Display List. The meter automatically exits Test Mode after the configured timeout expires. When the timeout is set to zero (0), it will remain in Test Mode until the power is removed. To exit Test Mode, press the TEST button or use remote commands from iConFig. Upon exiting Test Mode, the customer-billing data is restored.

Meter Overview Metering Capabilities Test Mode Lock This feature allows a utility to run special tests that require the meter to remain in Test Mode even after temporary interruptions in power. When the Test Mode Lock feature has been activated, the meter starts back up (i.e., after power is restored after an outage) in Test Mode provided it is still within its configured timeout period. To activate Test Mode Lock: 1. Ensure the meter is in Normal Mode. Depending on the mode, refer to the appropriate display list paragraph above. 2. Press and hold the TEST button for three (3) seconds. The TST Annunciator will flash On and Off to indicate that the Test Mode Lock feature is active. 3. To exit Test Mode while in Test Mode Lock, press the TEST button again. NOTE: If the Test Lock feature is activated and the timeout period is set to zero (0), the meter will start up and remain in Test Mode indefinitely. Diagnostic Display List When the meter is in Diagnostic Mode, the Diagnostic display list will be presented. This list usually contains per phase instantaneous measurements and information (such as volts, amperes, watts, volt-amperes, volt-amperes reactive, etc.). This information may be useful in troubleshooting wiring problems or verifying that the wiring is correct. While in Diagnostic Mode, the meter continues to measure and store usage data in the billing registers. To enter Diagnostic Mode, pass a magnet over the side of the meter as shown in Figure 2-14.. Each subsequent swipe of the magnet will advance the display to the next item in the list. It is possible to use the magnet in the Optical Probe. Figure 2-14: Scrolling Through Display List Version 1.0 Meter Overview 2-17

Operation Hardware Setup Version 1.0 Operation 3-1 Chapter 3 The iCon™ APX Advanced Functionality Meter is configured using the iConFig™ application. This chapter provides brief descriptions of the Modules used to configure the meter. Refer to iConFig Start-up and User’s Guide for instructions on configuring the meter. Hardware Setup The information in this section is not intended to provide instructions to unqualified personnel nor replace the extensive training needed to safely handle the metering equipment. The set-up of all meters shall be accomplished by qualified electricians and metering specialists. The procedures described in this section are recommended for new or upgraded meters. After setting up the meters, it may be necessary to program/reprogram and/or calibrate the meter. The set-up of all meters shall be accomplished by qualified electricians and metering specialists. All Meters In order to insure security, the meters are protected by two seals. • A T-Bar Seal that goes on the back of the meter • Demand Reset Seal that secures the RESET/ALT Lever. After set-up is complete, seal the meters.

Hardware Setup Operation 3-2 Operation TM-iX0A-0805 Self-Contained Meters Some self-contained meters have Phantom Load links on the bottom of the Meter Base Assembly. Ensure the links are all up and secured with the screws. Figure 3-1: Phantom Load Links (closed) Calibration Check Do not permit unauthorized personnel to operate meter-testing equipment or to test meters. Hazardous voltages can be present, exposing personnel to the risk of death or serious injury, and exposing equipment to the risk of damage. Only authorized, trained personnel may operate the meter-testing equipment, using approved test procedures and safety precautions. Depending on the meter form and the particular requirements of the test board, you may have to first ‘open’ the Phantom Load Links. To perform a calibration check: 1. Loosen the two screws on each link. 2. Open the Phantom load links by: a. Loosening all of the screws on each link b. Sliding the links down until they stop 3. Re-tighten the lower screws enough to prevent any link from moving. 4. Install the meter into your test board. 5. In the controlling software for your test board, choose the appropriate meter form (Form 9 or Form 16). 6. Perform the calibration check.

Operation Hardware Setup After completing the calibration check: 1. Remove the meter from the test board. 2. Close the Phantom Load links by: a. Loosening the lower screws on each link b. Sliding the links up until they stop 3. Securely tighten all of the screws to prevent the slides from moving. Testing To interface with test equipment, the meter generates test pulses. The energy value assigned to each test pulse is defined as the meter Kh and can be configured to value that is a multiple of 0.2. Meter Default Kh Range (Wh/Pulse) Form 9 1.8 Wh/pulse 0.2 to 40.8 Form 16 21.6 Wh/pulse 0.2 to 99.8 The test pulse output is compatible with all ANSI-rated laboratory and field test equipment and is transmitted through the Infrared (IR) Test Pulse LED. When aligning the optical pick-up in front of the IR Test Pulse LED. Position the pick-up so that it is perpendicular to the IR Test Pulse LED. See Figure 3-2. Figure 3-2: Location of the Infrared Test Pulse LED Version 1.0 Operation 3-3

Hardware Setup Operation 3-4 Operation TM-iX0A-0805 IR Test Pulse LED Background The iCon APX meter contains a Metering Chip that is used for the measurement of energy (voltage * current). The test pulse signal is based on an output from this chip. This signal is routed up through the display board to the Infrared (IR) LED in the optical port on the face of the meter. The meter controls the function of the IR LED. When the meter detects communication activity on the sensor portion of the optical port, it stops the IR LED from sending test pulses and switches it for use as a transmitter. Once communication has ended, the meter reverts the IR LED back to a test-pulse output. To allow the meter to properly detect the service and restore all its billing and status registers, a start-up delay of seven (7) seconds is required at the beginning of each meter test operation. Setting the Start-up Delay Below are instructions on how to set the start-up delay on the following test boards: • WECO • UTEC/RFL If you are using a test board not identified above, please contact Sensus Metering Systems to have it added to this document for other’s benefit. WECO – Windows software 1. Execute the Winboard software. 2. Close the Winboard – Meter Testing window if open. 3. Enter the Winboard-Administration window. 4. Select the Administration menu. 5. Select Workstation Settings. 6. Select the Station 1 tab. 7. Set the Standard Settling Time to 7 seconds (with other settling times, this will result in a delay time of approximately 10 seconds overall). 8. Select Save then Close. 9. If you have problems changing this in the WECO software, call 601-933-0900. WECO – DOS software 1. Execute the DOS software. 2. Press the F8 function key for the Setup menu. 3. Set the KWH Test Dwell Time field to 7 seconds (with other settling times, this will result in a delay time of approximately 10 seconds overall). 4. Press the F1 function key to save and return. 5. If you have problems changing this in the WECO software, call 601-933-0900.

Operation Hardware Setup UTEC/RFL – Windows software 1. Enter Syslink DB Maintenance. 2. Enter Meter Test under Testset Group. 3. Select Testset. 4. Edit SubTest. 5. Enter Testpoint screen. 6. Select Testpoint to edit. 7. Change Stabilization Delay to 10 seconds. 8. Save changes. 9. If you have problems changing this in the UTEC software, call 800-952-8832. UTEC/RFL – DOS software The UTEC/RFL DOS software does not have a provision for a delay time. The test starts with the first test pulse the test board receives after voltage and current are applied to the meter. As a result, spurious results may occur when using this test board to test the iCon 12S meter. Display Board Check After applying power to the meter, ensure the LCD is active and displaying meter information based upon the configured display modes. Test Mode The purpose of Test Mode is to allow you to verification the calibration of the meter without losing any customer billing data. Also, the Demand Interval for Test Mode can be shorter than for other modes allowing you to check the Demand measurement within the meter much faster. Refer to the iConFig Start-up and User’s Guide for information on configuring Display Modules and Demand Modules. To put the meter in Test Mode using the TEST button: 1. Remove the Meter Cover. Refer to “Removing the Meter Cover” in Chapter 4. 2. Press the TEST button. It is also possible to put the meter into Test Mode using iConFig. Upon entering Test Mode: • A “snapshot” of all of the customer-billing data is taken and stored in separate locations. Test billing data and test data are not applied to the customer’s billing data while the meter is in Test Mode. • The TST Annunciator illuminates. • The first item in the Test Mode Display List is shown on the LCD. To scroll through the items in the Display List, press and release the ALT button. When you reach the last item and press the ALT button, the meter will recycle to first item in the Display List. Version 1.0 Operation 3-5

Installation Operation 3-6 Operation TM-iX0A-0805 Test Mode Operation While the meter is in Display Mode, the Test Pulse correlates to the energy value that is visible on the LCD. NOTE: If the Display List item does not have an energy reading, the Test Pulse will correlate to the kWh present at the meter. Example: If the item on the Display List is kWh delivered, the Test Pulse will correspond to the kWh presently going through the meter. When you press and release the ALT button and the next item on the Display List is kVAR hours, the Test Pulse will correspond to the kVAR hours. The Test Pulse constant (Kt) in Test Mode can be different than the constant (Kh) that is used in Normal, Alternate, and Site Diagnostic Modes. Test Lock To put the meter into Test Lock from Normal Mode, press and hold the TEST button [approximately three (3) seconds] until the TST Annunciator flashes. While in Test Lock, the TST Annunciator will flash. In Test Lock the meter remains in Test Mode for the amount of time configured in the Test Mode Timeout period, even if power is cycled during that time. If the Test Mode Timeout period is set to zero (0), the meter will remain in Test Lock indefinitely. Regardless of whether the meter is in Test Mode or Test Lock, pressing the Test button a second time causes the meter to revert back to Normal Mode. When exiting Test Mode, all previously stored customer-billing data from the “snapshot” is restored to the billing registers and the meter returns to Normal Mode. Reset Button It is possible to reset the energy and Demand values in the Test Mode registers without having to cycle the meter through different modes. While in Test Mode, press and release the RESET button to reset the Test Mode registers. Installation The APX meter is designed to be compatible with the mechanical form factor of existing electromechanical, commercial meters. This design allows technicians and trained meter personnel to perform meter installations easily and without the use of specialized tools. To install the meter, follow the procedures established by your company for standard commercial meters. Should the meter be configured to monitor for diagnostic errors, it may be necessary for the technician to observe the meter for several minutes to ensure no error messages appear. Refer to “

Operation Installation Diagnostics and Alarms” below. Meter Power-Up NOTE: If the meter was in Test Lock or the Test Mode timeout period had not expired, the LCD will display the last item that was shown on the LCD at the time power was removed. After installing the meter into a socket and applying power, the meter should boot up and start cycling through the Normal Display List unless: • The meter was powered down while in Test Lock • The Test Mode Timeout Period has not expired. In addition to the boot-up items discussed in this section, additional settings can be configured using iConFig. NOTE: If the meter was in service prior to powering down, meter and billing data is automatically stored. During power-up, the meter retrieves the stored data. After power is applied to the meter, the meter: • Determines the service type ▪ Wye ▪ Delta • Determines the phase rotation ▪ A, B, C ▪ C, B, A • Detects any missing voltages • Verifies the service voltages ▪ Phase-to-Neutral o 120 o 240 o 277 ▪ Phase-to-Phase o 208 o 480 NOTE: If the meter detects phase angle errors, the meter runs industry-standard diagnostics (see “Diagnostics and Alarms” below) • Verifies the phase angles are correct for the service type (variances can be configured with iConFig). Version 1.0 Operation 3-7

Configuring APX Meters Operation 3-8 Operation TM-iX0A-0805 Configuring APX Meters With iConFig, users can create or edit configuration programs that can be downloaded into APX meters. iConFig is a user-friendly software package that has been developed to configure, troubleshoot, and read the APX meter. iConFig is designed to be a flexible, Microsoft® Windows-based application that runs on: Windows: • 98SE • NT 4.0 • 2000 (any version) • Millennium Edition (Me) • XP (any version) iConFig is used to perform the following functions: • Configure the meter using “Programs” • Read the meter • Generate reports • Upgrade/Downgrade meter capabilities • Update the firmware The meter may be preprogrammed at the factory for basic commercial metering. Although certain parameters are customizable when ordering the meters, additional configurations are accomplished through iConFig. Refer to the online tutorials and the iConFig Start-up and User’s Guide iConFig configures the meter by converting the desired settings into hexadecimal code and then downloads those settings to the tables within the meter (in accordance with ANSI 12.19). Figure 3-3: iConFig Application

Operation Configuring APX Meters Identification The Identification data contains information about the utility, the configuration program, vendor, and other meter data. The data in this Module is for informational purposes and has no effect on the operation of the meter. The following identification data are permanently stored in meter memory. The data is stored at the factory and no changes are allowed. • Manufacturer’s serial number • Firmware version • Nameplate information The APX meter can store additional, customer required identification data: • Utility meter ID • Account number • Miscellaneous ID • Program vendor • Program ▪ Version number ▪ Revision number • Owner • Utility division • Service point • Customer ID • X, Y, and Z coordinates • Tariff ID All of these data are for informational/identification purposes only and have no effect on the operation of the meter. The meter provides the utilities a place to store additional information that is important to their billing or tracking system. Metering Constants The APX meter allows the following Metering Constants to be configured by users. • Kh and Kt values - typically set at the factory using iConFig, but may be changed by the user • Meter multiplier: ▪ Stored but not used by the meter ▪ Used by the billing systems when reading data from the meter • Time BaseTime Base selection (internal crystal or line frequency synchronization) • CT and PT ratios (for transformer rated meters) Version 1.0 Operation 3-9

Configuring APX Meters Operation 3-10 Operation TM-iX0A-0805 Diagnostics and Alarms The meter can be configured to monitor or ignore certain internal conditions and to display alarm codes should any of those condition be detected. The following items can be configured: • The conditions to monitor • The threshold levels • How long a condition must exist before the meter issues an alarm • To perform any of the following actions should a monitored condition occur: ▪ Lock the display with the error code, or add the code to the Normal Display List ▪ Add an entry to the History Log ▪ Send a message through a communications module (if installed) ▪ Close a relay (if installed) NOTE: Any time changes are made to the alarm settings, use iConFig to clear all alarms and status bits. Industry Standard Diagnostics This section discusses the standard diagnostics that, when configured, are tested by the meter every ten (10) seconds. If any one diagnostic fails six (6) consecutive times, the meter considers the diagnostic to have failed. Refer to iConFig Set-up and User’s Guide for more information. A failed diagnostic must pass six (6) consecutive times before the meter considers the diagnostic to have passed. Diagnostic 1 Polarity and Cross Phase Check tests for the proper phase relationships of each of the voltages with respect to phase A voltage. This diagnostic checks for faulty site wiring. The nominal values are based on the “type” of meter, and can be overridden. Diagnostic 2 Phase Voltage Deviation Check compares each phase against the “nominal” phase voltage. Diagnostic 3 Inactive Phase Current Check checks the current amplitudes against a configured. Diagnostic 4 Phase Angle Displacement Check verifies that the power factor for each phase is within the limits (measured in degrees) for each phase for maximum lag and maximum lead. This diagnostic is not performed if a phase voltage is missing or Diagnostic 3 fails. Diagnostic 6 Current Magnitude Imbalance Check checks for the relative amplitude of the phase currents and compares each current to the average of all enabled currents. Diagnostic 7 Energy Direction Check fails if any enabled, phase energy flow is negative (received power).

Servicing the iCon APX Meter Meter Communication Version 1.0 Servicing the iCon APX Meter 4-1 Chapter 4 This section provides brief descriptions and procedures for: • Communicating with the meter • Programming the meter (firmware) • Resetting the meter • Replacing meter components Meter Communication Linking with meter is accomplished by various means. This section provides brief descriptions of the means to communicate with APX meters for data transfer, programming and configuring, and meter updates. To communicate with APX meters, use an ANSI Type 2 optical probe with any of the equipment listed below. • Laptop or Work Station with a Microsoft Windows operating system and loaded with iConFig or some other software for communicating with electricity meters • A supported hand-held device used to read billing information from meters. Infrared Port The infrared port was designed to accept an ANSI C12.18 Type 2 optical probe. The port can communicate up to speeds of 19200 bps, and complies with the protocol specified in the ANSI C12.18-1996 standard. Remote Communications Installing an optional AMR Module enables remote meter communications. For more information, refer to the documentation that came with the AMR Module. Updating the Firmware The firmware is stored in flash memory and can be easily loaded into the meter through its optical port. If it becomes necessary to update the meter’s firmware, Sensus Metering strongly recommends that all billing and meter data be backed up prior to the installation process. To update the meter’s firmware, an Action can be created and executed using iConFig. Refer to iConFig Start-up and User’s Guide for instructions on performing a firmware upgrade. Resetting the Meter It may be necessary to reset the meter: • In the event that a meter is malfunctioning or fails to perform as programmed and/or configured • After removing a meter from service (depending on the standard procedures of the utility)

Troubleshooting Servicing the iCon APX Meter 4-2 Servicing the iCon APX Meter TM-iX0A-0805 NOTE: Performing a Cold Start clears all of the customer data registers. Ensure all customer data is downloaded and stored prior to performing a Cold Start. Failure to observe this note will result in permanent data loss. A Cold Start restores the meter to factory default settings. All configuration settings as well as billing, status, and history data will be lost. Some meters come from the factory pre-programmed and performing a Cold Start is not required. Should your company policy require it, perform a Cold Start prior to configuring and installation. A Cold Start can be performed in either of the following ways: • Press and hold the three buttons on the face of the meter (TEST, RESET, and ALT), and then apply power to the socket. • Use iConFig to perform a Cold Start. Refer to iConFig Start-up and User’s Guide for instructions on performing a Cold Start. Upon recognizing a ‘Cold Start’, the meter will commence erasing all data. During this process, the LCD will display ErASE and a series of incrementing numbers. At the end of the process, the meter will restore the factory default settings and automatically perform a ‘Warm Start’. Troubleshooting Troubleshooting iCon™ APX meters can consist of performing a visual check, installation check, shop testing, and display board checks. Visual Check Do not apply power to a meter that may have been damaged or may otherwise be defective. Arcing, fire, or explosion may occur, and noxious gases can be generated. Failure to observe this warning exposes personnel to the risk of death or serious injury, and can destroy or cause additional damage to the unit. Check for missing seals, tampering, or any physical damage to the outside of the unit before applying power to the socket. If any damage is visible, perform a more detailed inspection by partially disassembling the meter (refer to “Removing the Register Cover”). Carefully inspect the internal components for: • Signs of excessive heat or burning • Hardware that appears to be missing or damaged Contact your sales representative to report meters that are damaged or that you suspect may be defective. Otherwise re-assemble the meter before proceeding with any tests.

Servicing the iCon APX Meter Troubleshooting Installation Check The most common cause of incorrect data registration is incorrect installation or the installation of the meter in an application other than its intended application. Other areas to check are as follows: • Is the meter installed in a poly-phase, Form 8 or 9 socket (transformer rated models) or a Form 14, 15, 16, or 17 socket (self contained models)? • Does the service voltage fall within the voltage range listed on the nameplate? • Is the T-Bar Seal and/or Demand Reset Seal broken or missing? This indicates possible tampering; report the incident in accordance with your company’s reporting procedures. • Is there evidence of mechanical or electrical damage? • Where fitted, check the phantom load slides to ensure: ▪ The slides are all in the closed position. ▪ The hold-down screws are all securely tightened. Shop Testing The meter does not require adjustments outside of the factory. To verify the meter is operating within factory specifications, verify its calibration using your meter shop’s procedures for testing poly-phase meters. Do not permit unauthorized personnel to operate meter-testing equipment or to test meters. Hazardous voltages are present, exposing personnel to the risk of death or serious injury, and exposing equipment to the risk of damage. Only authorized, trained personnel may operate the meter-testing equipment, using approved test procedures and safety precautions. For information on using an optical pick-up to monitor test pulses, refer to “Test Pulse Kh Outputs” in Configuration (Chapter 3). Diagnostic Checks The meter can run Diagnostic Checks as follows: • Every 10 seconds (except during a power outage) • Advanced Diagnostic Alarms depend on the Minimum Service Duration setting and are monitored constantly The specific items that are tested are described below. Before the meter indicates a Diagnostic Check failure, it must fail for one minute (six consecutive tests). Likewise, once a Diagnostic Check has failed, the meter must pass for one minute for a failure to clear. This process prevents erroneous failures based on short-term load fluctuations. Version 1.0 Servicing the iCon APX Meter 4-3

Replacement – Basic Components Servicing the iCon APX Meter 4-4 Servicing the iCon APX Meter TM-iX0A-0805 A unique error code can be displayed on the LCD for each Diagnostic Check failure. Refer to Appendix C: Alarms, Diagnostics, and Errors for more information on specific error codes and corrective measures. The meter can be configured to do any one of the following options: • Append the alarm code on the LCD’s display list • Lock the LCD with the alarm code on the LCD Configurable tables within the meter contain the necessary values to monitor and regulate the diagnostics described in this section. A separate data table contains a counter for each diagnostic and increments when each enabled diagnostic goes from PASSED to FAILED. Each diagnostic check can: • Be enabled • Be disabled • Cause a history message/dial out to be performed • Operate an alarm relay • Cause an error message display In the event the meter senses a condition that generates an alarm code, the code is sent to the LCD and displayed based upon the configuration of the Display Module. Refer to Appendix C: Alarms, Diagnostics, and Errors for more information. The meter can be configured to display alarm codes. The codes can be cleared by pressing the RESET button, by a remote command using iConFig, or other software used for communicating with meters. Alternatively, the meter can be configured to only display alarm codes for as long as the condition that caused the failure exists. NOTE: When Lock display on alarms is selected (Diagnostic and Alarms Module), only the first detected alarm is displayed. In case there may be more than one alarm, Sensus recommends that, prior to clearing the alarms, you use iConFig to read the meter’s status information The status information will indicate all of the alarms that are present. Replacement – Basic Components This section provides the necessary instructions for removal and replacement of defective components. In addition to meter repair, the replacement instructions can be used for upgrading the meter. If you upgrade the meter with supported option boards, it may be necessary to recalibrate the meter. Refer to the option board’s accompanying documentation for more information.

Servicing the iCon APX Meter Replacement – Basic Components Replacement of the Meter Cover It is strongly recommended that all replacement procedures for component-level repairs be done in the shop. Removal of the Meter Cover in the field may allow debris or other contaminants into the meter, damaging the meter or causing further damage to a malfunctioning meter. Removal of the Meter Cover in the field may allow debris or other contaminants into the meter, further damaging the meter or causing the meter to malfunction. Removing the Meter Cover Hazardous voltages are present when power is applied to the meter. Do not remove the Meter Cover or attempt to disassemble the metering equipment while power is applied. Failure to observe this warning exposes personnel to the risk of death or serious injury and risks damage to the equipment. 1. If the APX meter is in a test socket, ensure the power has been removed from the socket. 2. Remove the meter from the test socket. 3. Remove the T-Bar Seal from the meter. 4. Grasp the Meter Cover, and turn it counter-clockwise until it reaches a positive stop. Figure 4-1: Removing the Meter Cover 5. Remove the Meter Cover from the Meter Base Assembly. Version 1.0 Servicing the iCon APX Meter 4-5

Replacement – Basic Components Servicing the iCon APX Meter 4-6 Servicing the iCon APX Meter TM-iX0A-0805 Installing the Meter Cover 1. Reseat the Meter Cover into the Meter Base Assembly 2. Turn the Meter Cover clockwise until it reaches a positive stop. Figure 4-2: Installing the Meter Cover 3. Install a new T-Bar Seal. 4. Install a new Demand Reset Seal. Replacement of the Register Cover The instructions in this section provide the necessary steps required to replace the Register Cover.

Servicing the iCon APX Meter Replacement – Basic Components Removing the Register Cover 1. Remove the Meter Cover. Refer to “Removing the Meter Cover” above. 2. Loosen the three (3) captive screws that secure the Register Cover to the Meter Base Assembly so they are no longer engaged in the Base Assembly. Figure 4-3: Register Cover – Captive Screws The APX meter design provides a secure fit of the Interconnect Board into the Sensor Board connector port. When removing the Register Cover, it may be necessary to gently rock the Register Cover from top to bottom to extract the Interconnect Board pins from the Sensor Board connector port. Use care not to over-extend the pins. Failure to observe this caution may result in damage to the meter. 3. Carefully remove the Register Cover from the Meter Base Assembly to expose the internal components. Figure 4-4: Register Cover – Removal Version 1.0 Servicing the iCon APX Meter 4-7

Replacement – Basic Components Servicing the iCon APX Meter 4-8 Servicing the iCon APX Meter TM-iX0A-0805 Installing the Register Cover 1. Hold the Register Cover at a slight angle as shown in Figure 4-5. 2. Align the Interconnect Board with the associated connector on the Sensor Board. 3. Align the Captive Screw Slot with the opening in the Sensor Board. Figure 4-5: Installing the Register Cover 4. Tip the Register Cover down onto the Meter Base Assembly 5. Press the Register Cover firmly into the Meter Base Assembly until the Interconnect Board is firmly seated on the Sensor Board. Use care not to over-tighten the captive screws. Failure to observe this Caution may result in damage to the bosses in the Meter Base. 6. Securely tighten the Captive Screws to five (5) in-lb of torque. 7. Install the Meter Cover. Refer to “Installing the Meter Cover” above.

Servicing the iCon APX Meter Replacement – Basic Components Replacing the Interconnect Board This section provides the instructions necessary to replace the Interconnect Board. Removing the Interconnect Board 1. Remove the Register Cover. Refer to “Removing the Register Cover” above. The Register Display Board and Register Cover may contain sharp edges. Exercise care while removing the Interconnect Board. Do not overextend the Integrated Alignment Ribs. Failure to observe this warning may result in minor injury to personnel and damage to equipment. 2. Gently push the top of the left Integrated Alignment Rib to the left and pull the Interconnect Board up and to the right. 3. Gently push the top of the right Integrated Alignment Rib to the right and pull the Interconnect Board up and to the left. Figure 4-6: Removing the Interconnect Board 4. Repeat Step 2 and Step 3, slowly working the Interconnect Board from side to side until it is free of the Register Display Board connector. Version 1.0 Servicing the iCon APX Meter 4-9

Replacement – Basic Components Servicing the iCon APX Meter 4-10 Servicing the iCon APX Meter TM-iX0A-0805 Installing the Interconnect Board 1. Slide the Interconnect Board into the Integrated Alignment Ribs. Figure 4-7: Installing the Interconnect Board 2. Align the Header Pins on the Interconnect Board with the connector on the Register Display Board. The Register Display Board, Register Cover, and Interconnect Board may contain sharp edges. Exercise care while installing the Interconnect Board. Failure to observe this warning may result in minor injury to personnel. 3. Gently press the Interconnect Board into the connector on The Register Display Board until the board clicks into place. 4. Install the Register Cover. Refer to “Installing the Register Cover” above.

Servicing the iCon APX Meter Replacement – Basic Components Replacing the Register Display Board This section contains instructions for replacing the Register Display Board. Removing the Register Display Board 1. Remove the Interconnect Board. Refer to “Removing the Interconnect Board” above. 2. Remove the screws securing the Register Display Board to the Register Cover. Figure 4-8: Removing the Register Display Board 3. Carefully lift the display board out of the Register Cover. Version 1.0 Servicing the iCon APX Meter 4-11

Replacement – Basic Components Servicing the iCon APX Meter 4-12 Servicing the iCon APX Meter TM-iX0A-0805 Installing the Register Display Board 1. Align the LCD with the rectangular opening in the Register Cover. 2. Insert the Register Display Board into the Meter Base Assembly as shown in Figure 4-9. Figure 4-9: Installing the Register Display Board

Servicing the iCon APX Meter Replacement – Basic Components Version 1.0 Servicing the iCon APX Meter 4-13 3. Locate the four (4) holes for the screws. 4. Secure the display board to the Register Cover using the four (4) screws. Figure 4-10: Installing the Register Display Board Screws 5. Install the Interconnect Board. Refer to “Installing the Interconnect Board” above. 6. Install the Register Cover. Refer to “Installing the Register Cover” above. NOTE If the meter continues to malfunction, the error may be in the Sensor Board or other meter component. Do not replace the Sensor Board. Contact your sales representative and Customer Service at Sensus Metering Systems. Refer to Sensus Metering Systems.

Theory of Operation Metrology Version 1.0 Theory of Operation 5-1 Chapter 5 This chapter describes the theory of operation for the iCon™ APX Advanced Functionality meter. Figure 5-1 supplements the information contained in this section. Figure 5-1: APX Meter Operational Overview Metrology The APX meter performs certain operations on the power present at the socket to provide accurate measurements. Metrology for power consumption consists of: • Sensors • Input • Power Calculations • Data Transfer Sensors The APX meter contains a current and voltage sensors for power measurement. Current Sensor Current is measured using proprietary Sentec® technology. There is one sensor for each phase, and these sensors interface with the Metering Chip by means of three precision amplifiers.

Metrology Theory of Operation 5-2 Theory of Operation TM-iX0A-0805 Voltage Sensor Voltage on each phase is measured using a precision-resistive-divider that is designed to maintain a highly stable division ratio over temperature, humidity, and time. The signals from the divider feed into the Metering Chip. Inputs The two types of meter data are: • Real-time values (instantaneous), such as per-phase voltages and currents • Accumulated values, such as kWh Depending on meter form, up to six inputs (Va, Vb, Vc, Ia, Ib, and Ic) are simultaneously sampled at a rate of 26k samples/second at 24-bit resolution. The sample streams: • Are filtered • Corrected for gain and offset • Serve as the real-time values for the calculations of per-phase and poly-phase energy (Wh, VARh, and VAh) The calculated energy values are accumulated in the designated energy registers, and are used to generate the test pulse signals. The Kh (configured through iConFig) setting controls the weight of each pulse. The test pulse signals are routed to the IR Test Pulse LED under the control of the main microprocessor. Power Calculations The real-time and accumulated values are used in the calculations to determine: • Watts and Watt-hours • kVA and kVAR Watts and Watt-Hours The Metering Chip multiplies the real-time values of current and voltage to calculate power (kW), and accumulates kW over time as energy (kWh). This calculation includes digital calibration factors to ensure that the registration of the meter is kept within specified tolerances. The raw energy values for each individual phase are transmitted by digital serial interface to the Register Display Board. The interface also carries information on the RMS current and voltage for each phase. The values are interrogated by the Register Display Board at least once per line cycle.

Theory of Operation Demand Metering Sliding Sliding (Rolling) Demand is where intervals are divided into a fixed number of subintervals. Demand calculations are performed at the end of each subinterval instead of at the end of each interval. As in Block Demand, the interval length must be a factor of 60. The subinterval length must be a factor of the interval. Figure 5-2 is an example of an interval of 30 minutes with 10-minute subintervals. Demand is calculated every 10 minutes based upon the three previous subintervals. Figure 5-2: Sliding Demand Interval Peak Peak Demand is stored as part of the billing quantities in the billing registers. It is the maximum calculated Demand since the last Demand Reset. Cumulative Cumulative Demand is stored as part of the billing quantities in the billing registers. It is the sum of the previous billing period peak Demand readings. At the time of a Demand Reset, the maximum Demand for the most recent billing period is added to the previously accumulated total of all maximum Demands. Continuous Cumulative Continuous Cumulative Demand is stored as part of the billing quantities in the billing registers. It is the sum of the previous billing period peak Demands and the present period peak Demand. Demand Reset When the meter performs a Demand Reset, the meter: • Adds the present Demand values to the Previous Demand register • Resets the intervals back to the beginning • Resets the Demand registers to zero (0) Version 1.0 Theory of Operation 5-5

Demand Metering Theory of Operation 5-6 Theory of Operation TM-iX0A-0805 Outage Recognition The meter can detect temporary interruptions in service. For Demand calculations, meters without Real-Time-Clocks (RTCs) “recognize” all interruptions in service as outages. Meters with RTCs can be configured to only “recognize” outages if they last more than the configured number of seconds. The Outage Recognition Time is configurable using iConFig. Demand Forgiveness Time Demand Forgiveness Time is the configured amount of time immediately following a recognized power outage that Demand calculations are suspended. The Demand Forgiveness Time is configurable using iConFig. Self Read During a Self Read, the meter captures the current billing data and then stores it in the associated Self Read registers. Self Reads are events that can be configured to be: • Scheduled to occur at specific times or intervals • Performed when other events occur (i.e., during a Demand Reset) • Performed when triggered by an external command Coincident Values Coincident demand refers to a demand value that occurs at the same time as another demand reaches its peak value. For example, an electric utility may want to record the kVAR demand at the time of a maximum kW demand. This requires that kVAR demand be stored and reported during the same interval as the maximum kW demand. Similarly, coincident power factor refers to a power factor that occurs at the same time as a demand value reaches its peak value. For example, an electric utility may want to record the average power actor at the time of a maximum kVAR demand. This requires the average power factor be stored and reported during the same interval as the maximum kVAR demand. Primary/Secondary Metering Primary Metering applies to transformer rated meters. Measured energy values are scaled according to the current transformer (CT) and primary transformer (PT) ratios of the current and/or voltage transformers connected to the meter. The resultant values reflect the energy as if the meter was on the primary side of the transformers. With Secondary Metering, the energy values are not scaled (i.e., the actual energy flowing through the meter is measured).

Socket Wiring Form 8S Version 1.0 Socket Wiring A-1 Appendix A This appendix provides meter and ANSI compliant socket specifications. Form 8S The standard connections for the iCon™ APX Advanced Functionality Meter are made with blades that pass through the Meter Base into ANSI compliant sockets. Figure A-1 shows the socket wiring for a two-element, transformer-rated, three-phase, four-wire socket for Delta service connections. Figure A-1: Socket Wiring - Form 8S Form 9S Figure A-2 shows the socket wiring for a three-element, transformer-rated, three-phase, four-wire socket for Wye service connections. Figure A-2: Socket Wiring - Form 9S

Form 14S Socket Wiring A-2 Socket Wiring TM-iX0A-0805 Form 14S Figure A-3 shows the socket wiring for a two-element, self-contained, three-phase, four-wire socket for Wye service connections. Figure A-3: Socket Wiring - Form 14S Form 15S Figure A-4 shows the socket wiring for a two-element, self-contained, three-phase, four-wire socket for Delta service connections. Figure A-4: Socket Wiring - Form 15S Form 16S Figure A-5 shows the socket wiring for a three-element, self-contained, three-phase, four-wire socket for Wye service connections. Figure A-5: Socket Wiring - Form 16S

Socket Wiring Form 17S Version 1.0 Socket Wiring A-3 Form 17S Figure A-6 shows the socket wiring for a three-element, self-contained, three-phase, four-wire socket for Delta service connections. Figure A-6: Socket Wiring - Form 17S

Specifications Meter Specifications Version 1.0 Specifications B-1 Appendix B This appendix provides meter and ANSI compliant socket specifications. Meter Specifications Operating Table B-1: Operating Conditions Voltage 120 – 480 (96 – 576) VAC Current 0 to Class Amperes Rated Frequency 45 – 65 Hz Ambient Temperature 25°C ± 5°C (77°F ± 9°F) Environmental Table B-2: Environmental Conditions: Temperature Storage Operating -40°C to +85°C (-40°F to 185°F) -30°C to +55°C (-22°F to 131°F) Humidity 0 to 95% RH (non-condensing) Maximums Table B-3: Maximums ANSI C37.90.1 2.5kV, 2500 strikes (Oscillatory) ANSI/IEEE 62.41 6kV, @1.2/50µs, 10 strikes (High Voltage Line Surge IEC 61000-4-4 4kV, 2.5kHz repetitive burst for 1 minute (Burst) ANSI C12.1-2001 sec 4.7.3.1 2.5kV, 60Hz, for 1 minute (Insulation) Current 120% Class Amperes Continuous 200% Class Amperes 1 Second Voltage 576 VAC (Phase-to-Phase)

Meter Specifications Specifications B-2 Specifications TM-iX0A-0805 Input Table B-4: Input Specifications Starting Current 5mA for Class 20 50mA for Class 200 *Power Supply Burden 120V 2.2W 3.5VA 240V 2.8W 6.6VA 277V 2.4W 6.8VA Current Circuit Burden < 0.25 VA per phase at Test Amperes * - Input voltage measured phase to Neutral. Physical Dimensions Dimensions A B C D E F G in 6.45 6.95 5.0 0.91 0.27 0.55 3.31cm 16.38 17.65 12.80 2.31 0.69 1.40 8.41Shipping Weight 1 Meter Carton 2.6 lbs 1.2 kg 4 Meter Cartons 10.1 lbs 4.6 kg 96 Meter Pallet 278.4 lbs 126.3 kg

Alarms, Diagnostics, and Errors Codes Version 1.0 Alarms, Diagnostics, and Errors C-1 Appendix C The tables in this appendix outline the codes for alarms and errors within the meter. Many of the codes can be configured by iConFig™ to be displayed on the meter’s LCD should certain conditions or events occur. Refer to iConFig Set-up and User’s Guide for configurable alarms and thresholds. Certain conditions are detected by the meter and may be accompanied by one or more codes that aid the technician in troubleshooting the situation. In the event the meter detects an alarm condition, a code similar to the one shown in. Figure C-1 is displayed. Figure C-1: Alarm Code Example In the event the meter detects an alarm condition, a code similar to the one in Figure C-2 is displayed. Figure C-2: Error Code Example Codes The following tables provide the code numbers, descriptions, notes, and corrective actions (if any)

Alarms, Diagnostics, and Errors Codes Version 1.0 Alarms, Diagnostics, and Errors C-3 Alarm Codes - continued Codes Description Notes/Corrective Action 0112 Low Current Phase A 0113 Low Current Phase B 0114 Low Current Phase C 0115 Low Current (System) The user configures the meter to monitor these thresholds. Corrective actions are determined by the utility’s standard procedures. 0116 High Current Phase A 0117 High Current Phase B 0118 High Current Phase C 0119 High Current (System) The user configures the meter to monitor these thresholds. Corrective actions are determined by the utility’s standard procedures. 0120 Low Voltage Phase A 0121 Low Voltage Phase B 0122 Low Voltage Phase C 0123 Low Voltage (System) The user configures the meter to monitor these thresholds. Corrective actions are determined by the utility’s standard procedures. 0124 High Current Phase A 0125 High Voltage Phase B 0126 High Voltage Phase C 0127 High Voltage (System) The user configures the meter to monitor these thresholds. Corrective actions are determined by the utility’s standard procedures. 0128 Low Leading PF Phase A 0129 Low Leading PF Phase B 0130 Low Leading PF Phase C 0131 Low Leading PF (System) The user configures the meter to monitor these thresholds. Corrective actions are determined by the utility’s standard procedures. 0132 High Leading PF Phase A 0133 High Leading PF Phase B 0134 High Leading PF Phase C 0135 High Leading PF (System) The user configures the meter to monitor these thresholds. Corrective actions are determined by the utility’s standard procedures. 0136 Voltage Sag Phase A 0137 Voltage Sag Phase B 0138 Voltage Sag Phase C 0139 Voltage Sag (System) The user configures the meter to monitor these thresholds. Corrective actions are determined by the utility’s standard procedures. 0140 Voltage Swell Phase A 0141 Voltage Swell Phase B 0142 Voltage Swell Phase C 0143 Voltage Swell (System) The user configures the meter to monitor these thresholds. Corrective actions are determined by the utility’s standard procedures. 0144 AMR Module Error The AMR module has reported an error to the meter. Refer to the documentation that accompanied the module. 0145 AMR Communication Error The AMR module is no longer communicating with the meter. Reseat the module. If the condition persists, contact technical support.

Codes Alarms, Diagnostics, and Errors C-4 Alarms, Diagnostics, and Errors TM-iX0A-0805 Diagnostic These diagnostics can turned On or Off with iConFig. The diagnostics are designed to assist the technicians and installers in diagnosing any error conditions within the meter and the service at the socket. Codes Description Notes/Corrective Action 0001 Diagnostic 1 (Polarity/Cross Phase) The meter has detected a connection that is reversed. Check the socket wiring at the meter and/or transformer. 0002 Diagnostic 2 (Phase Voltage Deviation) The meter has detected one or more service voltages outside of the configured nominal percentage. Check the socket wiring at the meter and CT/PT ratios. 0003 Diagnostic 3 (Inactive Phase Current) Current on one or more of the phases is missing. Check the socket wiring at the meter for each phase. 0004 Diagnostic 4 (Phase Angle Displacement) The power factor of one or more of the phases is out of tolerance. Check the socket wiring at the meter for each phase. 0006 Diagnostic 6 (Current Magnitude/Imbalance) Too much load current flowing to the meter and/or one or more of the phase currents are out of tolerance relative to the other phases. Check the connections to the load and load-side wiring. 0007 Diagnostic 7 (Energy Direction) The power flowing through the meter is reversed. Check the socket wiring at the meter or for a generator on the load side of the meter. Error The following error codes indicate that the meter is not functioning improperly. Contact technical support to report the error code. Codes Description 1001 RAM Failure 1002 Flash Checksum 1003 Flash Empty 8841 Metrology Error 8904 Metrology Error 8905 Metrology Error 8C04 Metrology Error 8C05 Metrology Error 9001 RTC Error 9002 RTC Error 9003 RTC Error 9004 RTC Error 9005 RTC Error 9006 RTC Error 9007 RTC Error 9011 RTC Error 9012 RTC Error 9013 RTC Error 9014 RTC Error 9021 RTC Error 9022 RTC Error 9023 RTC Error

Index Version 1.0 I-1 Index 1 120, 277, 240, 480 Indicators, 2-12 A Activating Test Mode Lock, 2-17 ADE7758 Integrated IC Chip, 2-6 Alarm Codes, C-2 ALT Button, 3-5 ALT Tab, 2-8 Alternate Display List, 2-16 Alternate Mode Button, 2-10, 2-13 Annunciators, 2-11, 2-12 ANSI Standards, 1-4 B Billing Registers, 1-3 Block Interval Demand, 5-4 Buss Bars, 2-6 Buttons ALT, 3-5 Alternate Mode, 2-10, 2-13 Demand Reset, 2-10, 2-13 RESET, 3-6, 4-4 TEST, 3-5, 3-6 Test Mode, 2-10, 2-13 C Calculations kVA, 5-3 kVAR, 5-3 Watt Hours, 5-2 Watts, 5-2 Calibration, 4-3, 5-3 Calibration Check, 3-2 Closing Phantom Load Links, 3-3 Codes Alarm, C-2 Diagnostic, C-4 Error, C-4 Coincident Values, 5-6 Cold Start, 4-2 Conducting Blades. See Buss Bars Configuring Meters, 3-8 Connector Ports, 2-6, 2-14 Continuous Cumulative Demand, 5-5 CT Ratio, 3-9 Cumulative Demand, 5-5 Current Circuit Burden, B-2 Current Magnitude Imbalance Check, 3-10 Current Sensor, 5-1 D Data Display, 2-13 Identification, 3-9 Transfer, 5-3 Default Kh, 3-3 Demand Block Interval, 5-4 Coincident, 5-6 Continuous Cumulative, 5-5 Cumulative, 5-5 Forgiveness, 2-15 Forgiveness Time, 5-6 Interval, 2-15, 5-4 Metering, 2-15 Peak, 5-5 Reset, 5-5 Reset Button, 2-10, 2-13 Reset Lockout Period, 2-15 Reset Seal, 2-15, 3-1 Sliding, 5-5 Subinterval, 2-15, 5-4 Diagnostic Checks, 4-3 Diagnostic Codes, C-4 Diagnostic Display List, 2-17 Diagnostic Mode, 2-17 Entering, 2-17 Exiting, 2-18 Diagnostics. See Industry Standard Diagnostics Diagnostics and Alarms, 3-10 Disk Simulator, 2-13 Display Board Check, 3-5

Error! No text of specified style in document. Index I-2 Index TM-iX0A-0805 Infrared LED, 2-10, 2-13 Display Lists Infrared LED Sensor, 2-10, 2-13 Alternate, 2-16 Infrared Port. See IR Port Diagnostic, 2-17 Input Specifications, B-2 Normal, 2-16, 3-7 Installation, 3-6 Test Mode, 2-16, 3-5 Installation Check, 4-3 Display Mode, 3-6 Installing Downloading iConFig Programs, 3-8 Interconnect Board, 4-10 E Meter Cover, 4-6 Register Cover, 4-8 Energy Direction Check, 3-10 Register Display Board, 4-12 Entering Diagnostic Mode, 2-17 Interconnect Board, 2-14 Environmental Contitions, B-1 Installing, 4-10 Error Codes, C-4 Removing, 4-9 Exiting Internal Components, 2-2 Diagnostic Mode, 2-18 Intervals Test Mode Lock, 2-17 Block, 5-4 F Sliding, 5-5 IR Port, 4-1 Firmware, 4-1 Communciation Speed, 4-1 Form 14S Socket Wiring, A-2 Optical Probe, 4-1 Form 15S Socket Wiring, A-2 Protocol, 4-1 Form 16S Socket Wiring, A-2 IR Test Pulse LED, 3-3 Form 17S Socket Wiring, A-3 Background, 3-4 Form 8S Socket Wiring, A-1 Location, 3-3 Form 9S Socket Wiring, A-1 Setting the Start-up Delay, 3-4 H K Hardware. See Meter Hardware Kh Calibration Ranges, 3-3 Hardware Setup, 3-1 Kh values, 3-9 Hazardous Voltages, 1-2, 3-2, 4-3, 4-5 Knockouts, 2-5 Hexidecimal Values, 1-3 Kt values, 3-9 History Log Registers, 1-3 History Logs, 3-11 L Humidity, B-1 Labels I Danger Label, 2-8, 2-9 FCC Label, 2-8, 2-9 iConFig, 3-8 Nameplate, 2-8 ID Code Display, 2-12 LCD, 2-11 Identification, 3-9 Annunciators, 2-11 Inactive Phase Current Check, 3-10 Displays, 2-11 Industry Standard Diagnostics Indicators, 2-11 Diagnostic 1, 3-10 LCD Displays and Indicators, 2-12, 2-13 Diagnostic 2, 3-10 LEDs Diagnostic 3, 3-10 Infrared, 2-13 Diagnostic 4, 3-10 Infrared Sensor, 2-13 Diagnostic 6, 3-10 IR Test Pulse, 3-3 Diagnostic 7, 3-10 Liquid Crystal Display. See LCD

Index M Meter Specifications Environmental Contitions, B-1 Maximums, B-1 Input Specifications, B-2 Meter Base Assembly, 2-3, 3-2 Maximums, B-1 Meter Communication, 4-1 Operating Conditions, B-1 Meter Configuration, 3-8 Physical Dimensions, B-2 Meter Cover, 2-14 Metering Chip, 3-4, 5-3 Installing, 4-6 Metering Constants, 3-9 Removing, 4-5 Metrology, 5-1 Meter Hardware, 2-3 Modes ADE7758 Integrated IC Chip, 2-6 Diagnostic, 2-17, 2-18 Buss Bars, 2-6 Display, 3-6 Connector Ports, 2-6, 2-14 Normal, 2-16 Infrared LED, 2-10 Test, 2-11, 2-13, 3-5 Infrared LED Sensor, 2-10 N Interconnect Board, 2-14 Knockouts, 2-5 Nameplate, 2-8 LCD, 2-11 Normal Display List, 2-16, 3-7 LCD Annunciators, 2-11 O LCD Displays, 2-11 LCD Indicators, 2-11 Opening Phantom Load Links, 3-2 Meter Base, 2-3 Operating Conditions, B-1 Meter Base Assembly, 2-3, 3-2 Optical Pick-Up, 3-3 Form 15S/16S, 2-5 Optical Port, 2-10 Form 16S (14S, 15S, 17S), 2-4 Option Board Knockouts. See Knockouts Form 9S (8S), 2-4 Option Boards, 2-14 Knockouts, 2-5 Outage Recognition, 5-6 Sensor Board, 2-6 Outage Recognition Time, 2-15 Meter Cover, 2-14 P Metering Chip, 3-4, 5-3 Optical Port, 2-10 Passwords, 2-18 Option Boards, 2-14 Peak Demand, 5-5 Phantom Load, 2-5 Performing a Cold Start, 4-2 Register Cover, 2-8 Permissions, 2-18 Register Cover Assembly, 2-7 Phantom Load, 2-5 Register Display Board, 2-10, 2-14 Phantom Load Links, 3-2, 3-3 Sensing Circuitry, 2-6 Closing, 3-3 Sensor Board, 2-6 Opening, 3-2 Switching Power Supply, 2-6 Phase Angle Displacement Check, 3-10 Meter Multiplier, 3-9 Phase Angles, 3-7 Meter Power-Up, 3-7 Phase Rotation, 3-7 Meter Reset, 4-1 Phase Voltage Deviation Check, 3-10 Polarity and Cross Phase Check, 3-10 Power Supply, 5-4 Previous Demand Registers, 1-3 Primary Metering, 5-6 PT Ratio, 3-9 Version 1.0 I-3

Error! No text of specified style in document. Index I-4 Index TM-iX0A-0805 Q S Quadrant Indicators, 2-12 Safety, 1-2 R Safety Precautions, 1-2 Seals Rated Frequency, B-1 Demand Reset, 2-15, 3-1 Ratios T-Bar, 2-3, 2-15, 3-1 CT, 3-9 Secondary Metering, 5-6 PT, 3-9 Security, 2-18 Register Cover, 2-8 T-Bar Seal, 2-15 Installing, 4-8 Self Read, 5-6 Removing, 4-7 Self-Contained Meters, 3-2 Register Cover Assembly, 2-7 Sensing Circuitry, 2-6 Register Display Board, 2-10, 2-14, 5-3 Sensor Board, 2-6 Installing, 4-12 Sensors Removing, 4-11 Current, 5-1 Registers Voltage, 5-2 Billing, 1-3 Sensus Metering Systems History Log, 1-3 Address, I-7 Previous Demand, 1-3 Email Address, 2-2 Status, 1-3 Fax Number, I-7 Test Mode, 3-6 Telephone Number, I-7 Time-of-Use, 5-3 Website Address, 2-14, 4-13, I-7 Remote Communications, 4-1 Service Type, 3-7 Removing Service Voltage, 3-7 Interconnect Board, 4-9 Service Voltage Indicators. See 120, 277, 240, 480 Indicators Meter Cover, 4-5 Register Cover, 4-7 Sliding Demand, 5-5 Register Display Board, 4-11 Socket Wiring Replacing Form 14S, A-2 Interconnect Board, 4-9 Form 15S, A-2 Meter Cover, 4-5 Form 16S, A-2 Register Cover, 4-6 Form 17S, A-3 Register Display Board, 4-11 Form 8S, A-1 RESET Button, 3-6, 4-4 Form 9S, A-1 RESET Tab, 2-8 Special Features, 3-11 RESET/ALT Lever, 2-15, 3-1 Standards, 1-4 Resetting the Meter, 4-1 Starting Watts, B-2 Rolling Demand. See Sliding Demand Status Registers, 1-3 Switching Power Supply, 2-6 System Architecture, 2-2

Index T Tabs ALT, 2-8 RESET, 2-8 TEST, 2-8 T-Bar Seal, 2-3, 3-1 Tempratures, B-1 TEST Button, 3-5, 3-6 Test Display List, 2-16 Test Lock, 3-6 Test Mode, 3-5 Button, 2-10, 2-13 Demand Interval, 2-15 Demand Subinterval, 2-15 Display List, 3-5 Registers, 3-6 Test Mode Lock, 2-17 Activating, 2-17 Exiting, 2-17 Test Pulse, 3-6 Test Pulse Kh Outputs, 3-3, 4-3 Test Pulses, 3-3 TEST Tab, 2-8 Theory of Opearation Block Interval Demand, 5-4 Theory of Operation, 5-1 Demand, 5-4 Power Supply, 5-4 Register Display Board Main Microprocessor, 5-3 Non-Volatile Memory, 5-4 Time-of-Use Registers, 5-3 Troubleshooting Display Board Check, 3-5 Installation Check, 4-3 Shop Testing, 4-3 Test Pulse Kh Outputs, 3-3, 4-3 ShopTesting IR Test Pulse LED, 3-4 Visual Check, 4-2 Missing Seals, 4-2 Physical Damage, 4-2 Tampering, 4-2 U Updating the Firmware, 4-1 User Defined Tables, 3-11 V Values Hexidecimal, 1-3 Ranges, 1-3 Visual Check Missing Seals, 4-2 Physical Damage, 4-2 Tampering, 4-2 Voltage Detection, 3-7 Ranges, B-1 Voltage Potential Indicators, 2-12 Voltage Sensor, 5-2 Version 1.0 I-5

Sensus Metering Systems 1501 Ardmore Boulevard, Suite 600 Pittsburgh, PA 15221 USA 1-800-METER-IT (638 - 3748) 1-800-888-2403 (fax) www.sensus.com TM-iX0A-0805 1.0

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