Huddleston Australia - HVAC/R + ELECTRICAL DISTRIBUTOR
HUDDLESTON LIMITED - HVAC/R + ELECTRICAL DISTRIBUTOR
Instruction Manual for UNI-T models including: UT528AU, Portable Appliance Tester, UT528AU Portable Appliance Tester, Appliance Tester, Tester
P/N:110401109985X Overview - UT528/528AU UT528/528AU UT528/528AU from. UT528/528AU Main Unit Earth Nulling Block 1 x Neck strap 1 x IEC Lead 1 x Safety Information Warnings - Please be aware of the following warnings. Before using the unit and test leads inspect both items. Do not use the unit and test leads if they are damaged or the case is broken or damaged as this could result in electrical shock. Replace the battery as soon as the battery indicator " "appears. Low battery levels may produce inaccurate readings. Do not use or store the unit in high temperature, humid, flammable or electromagnetic environments as damage and incorrect readings may result. If the tester requires repair or replacement please contact your local service center. Declaration of Conformity Uni-T manufactures this product and declares that this product conforms to the 2 2013 2010 UT528/528AU 8.Warning Symbol 9.Unit Error 10.Readings and Cable Results 11.Leakage Current 12.Double Insulated / Class II Test 13.Class I Test 4 Class I Test Button + Zero/Null Selection Class II Test Button + 250V/500VInsulation Selection IEC / Cable Test Button +30m Long Lead Selection Earth Probe Mains / IEC testing 5 Front Panel Operation 1: Press + button to Power ON / Power OFF. 2: Press button when testing a CLASS I Appliance. 3: Press button when testing a CLASS II Appliance. 4: Press button when performing Cord / Extension Lead testing. Advance Features 5. Press and hold the + buttons to activate the 250V/500V and 0.1/0.2/0.3 earth continuity Pass/Fail Values setup. 6 Before Testing - Zero the Earth Bond Test Lead! Plug the earth probe into the rear of the unit and connect it to the earth nulling adapter. Plug the earth nulling adapter into the front panel earth socket to complete the circuit. Press and hold the button for 5 seconds to zero the earth bond reading using the earth bond lead and the nulling adapter together in the front test socket. This will null the earth reading of the test lead and "GOOD" will be displayed once complete. It is good practice to do this once prior to carrying out testing. Auto Switch Off The unit will automatically switch off after approximately 2 minutes if no buttons are pressed. Testing a Class 1 Appliance Plug the appliance into the UT528/528AU panel main socket. Plug the earth test lead into the socket on the UT528/528AU end panel. Connect the earth crocodile clip to an 7 exposed metal part on the appliance as shown in Diagram 3. 1. Earth / Protective Conductor Test Press the Class 1 test button begin. to start the test. The earth resistance test will 8 If the earth resistance measured is greater than the VHOHFWHG3$66OLPLWIRU HDUWKERQG WKHmeter will display "×Earth Cont", which is a FAIL. If this occurs, re-check the connections between the pin of the plug to the bodywork of the appliance and that the crocodile clip is attached to clean earthed metalwork on the appliance (try attaching the clip to analternative piece of metalwork). If all connections are 2. the appliance earth connection may be faulty. The PASS OLPLWfor the earth bond test FDQEHVHWWR0.2 RUfor a Class 1 appliance. (See page 17.) If the reading is less than WKHVHOHFWHG3$66OLPLW, the meter will display " Earth Cont", which is a 3$66 The unit will then automatically attempt to proceed to the insulation test. If it detects that the appliance's power switch is in the ON position it will carry out the insulation test automatically. If this is not detected the unit will display a flashing symbol and also "LO LOAD". Press the button to proceed to the insulation test. 9 2. Insulation Resistance Test Before the unit carries out the insulation test it will attempt to check that the connected appliance's power switch is in the ON position. If it detects that the appliance switch is in the ON position it will automatically carry out the insulation test. Note: most electronic appliances will have electronic ON/OFF switches and even though they are switched on the "Check Connections" message will still appear. If the measured resistance is greater than 1M, the meter will display " Insulation" as a PASS rating. If the insulation of the appliance is less than 1M, it will display "× Insulation" as a FAIL rating. Leakage Test 3. After the unit has completed the insulation test it will automatically proceed to the leakage test. 10 Sub Leak" Sub Leak" as a T UT528/528AU UT528/528AU Class 2 Pre-Check If the unit detects that the appliance appears to be Class 1 as it detects an earth connection (possibly as a result of a connected earth clip) it will display a flashing symbol and you will be prevented from carrying out the Class 2 test. Test the appliance instead using the Class 1 test. Insulation Resistance Test Class 2 Appliance Before the unit carries out the insulation test the unit will attempt to check to 12 see if the appliance is in the ON position. If it detects that the appliance switch is in the OFF position it will wait and display a flashing symbol. If you are sure that the appliance is switched ON press the to start the test. button again Note: most electronic appliances will have electronic ON/OFF switches and even though they are switched on the flashing will still appear. If the measured resistance is greater than 2M, the meter will display " Insulation" as a PASS rating. If the insulation of the appliance is less than 2M, it will display "× Insulation" as a FAIL rating. 13 Leakage Test 5. After the unit has completed the insulation test it will automatically proceed to the leakage test.If the measured leakage is less than 5mA, the meter will display " Sub Leak" as a PASS rating.If greater than 5mA, it will display "× Sub Leak" as a FAIL rating. Class 2 FE The FE stands for Functional Earth and the test is carried out using only the centre Class ll button on the unit. Plug the appliance under test into the mains socket on the front panel of the unit and connect the earth test probe from the unit to an exposed metal part on the appliance under test. If the unit detects an earth path then the display "CL2 FE" ( if it does not detect an FE it will not display this message and will carry on with a normal Class ll test ) Final Result - Class 2 After the above tests are completed, the meter will indicate whether the appliance has Passed or Failed the Class 2 test. Testing an IEC Lead / Extension Lead / Cord Test Plug the mains lead under test into the socket and the front panel mains socket on the unit as shown in Diagram 5. 14 To Start the Cord Test Press 1. Earth Bond Test The unit will carry out an earth bond test in the same manner as a Class 1 appliance. The Pass mark for this test is less than the setup value(0.1,0.2,0.3) 2. Insulation Test The unit will then carry out an insulation test as previously discussed in the manual. The PASS Mark for this test is 2 M. 15 Note: when testing Surge Protected Extension Leads this test may fail. This is normal and a result of circuitry within the surge protection device. 3. Polarity Test The polarity test is the final test to be carried out and will check that the cord or extension is wired correctly. It will check for open circuit, short circuit or Line / Neutral reversal. If the Polarity is correct then the meter will display "LN, LE , NE PASS" If the Polarity test detects a fault, the meter will display "FAIL" and which polarity is fault. 4. Overall Result After the above measurements are completed, the meter will indicate whether the measured appliance is compliant with the requirements of cord testing with "PASS" or "FAIL" Testing a Surge Protected Extension Lead or Appliance When you press and hold the + buttons for 1 sec the tester will go 16 into setup mode which can set up the 250V /500V test voltage and 0.10.2/0.3 earth continuity Pass /Fail value, the button to change Pass /Fail value and the button to change test voltage,and the button to save and turn back. The insulation test voltage reduces from 500V to 250V to allow for the testing of surge protected appliances and leads. Note: Each insulation test carried out will be the setup values. If you want to change this setup mode, you need to re-set up the values again. Checking a Mains Power Supply The unit comes complete with a built in soket tester which will check to ensure 17 that the socket is wired correctly. Connect an IEC lead to the mains socket and plug this into the back of the meter as shown in Diagram 6. 1If the Live and Neutral in the socket wiring are reversed or there is a fault with the protective earth connection this is indicated as "LN, LE×, NE×, FAIL". 2If there is a fault with the neutral connection this is indicated as "LN×, LE, NE×, FAIL". 3If the mains socket wiring is correct the display will show "LN,LE, NE, PASS". 18 Earth Continuity Pass Limit& Accuracy Test Current Test Voltage Insulation Resistance Pass Limit & Accuracy Test Voltage Test Current Test Current Leakage Current Accuracy Test Voltage Test Current ±(5%+2) 200mA minimum 5V nominal ±(5%+2) Default: 250V Selectable: 500V >1mA 250k <2mA 1k ±(5%+2) 40Vrms,50Hz AC <5mA 2k Factory Default PASS/Fail Limits Class I Class II Cord UT528 UT528AU UT528 UT528AU UT528 UT528AU Earth Continuity 0.1/0.2/0.3 ohm N/A 0.2 ohm 1 ohm Insulation Resistance 1.0Mohms Leakage 5mA N/A 2.0 Mohms 1.0 Mohms 2.0 Mohms 1.0 Mohms 5mA N/A Remarks (UT528AU Only): Earth Continuity: Class I the setup value, Cord1 is PASS. Insulation Resistance 1.0M is PASS. Leakage: Class II 5mA is PASS. length 5m 10m 25m Cord Size/ Current Rating 0.5mm2/(3A) 0.20 0.40 1.00 1.0mm 2/(10A) 0.10 0.20 0.50 1.25mm 2/(13A) 0.10 0.20 0.40 Manufactured by Uni-T, an ISO9001 company. Distributed by: New Zealand Huddleston Limited www.huddleston.nz info@huddleston.nz (+64) 09 283 0583 Australia Huddleston Australia PTY Limited www.huddleston.com.au info@huddleston.com.au (+61) 08 7077 4600