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CENTERLINE 2100 Motor Control Centers Joining and Splicing Vertical Sections Installation Instructions

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CENTERLINE 2100, 2100, MCC, motor control centers, joining, splicing, insulated bus

CENTERLINE 2100 Motor Control Centers Joining and Splicing ...

These instructions illustrate the recommended procedures to use when joining and splicing CENTERLINE 2100 motor control centers (MCCs). For more splicing information related to specific MCCs, see the bus splice illustra…

CENTERLINE 2100 Motor Control Centers ...

CENTERLINE 2100 Motor Control Centers Joining and Splicing Vertical Sections

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Installation Instructions
Original Instructions

CENTERLINE 2100 Motor Control Centers Joining and Splicing Vertical Sections

Bulletin Number 2100

Topic

Page

Required Tools

Joining MCCs

Splicing MCCs

Splicing Procedures

Torque Specifications and Table

Additional Resources

These instructions illustrate the recommended procedures to use when joining and splicing CENTERLINE� 2100 motor control centers (MCCs).
For more splicing information related to specific MCCs, see the bus splice illustration that is included in the documentation that is shipped with the MCC.

ATTENTION: De-energize all power sources to the motor control center before joining and splicing vertical sections. Failure to de-energize all power sources can result in severe injury or death.
Review your company safety lockout and tag-out procedure.
All covers and doors must be in place before you apply power to the MCC. If units are removed, they must be replaced with the appropriate items, such as units, doors, and unit support pans.

IMPORTANT If you use NO-OX-ID corrosion inhibitor on the busbars, do not get any of the inhibitor on the bus splice hardware. The corrosion inhibitor does not let you properly torque the hardware. Damage can occur.

Summary of Changes
This publication contains new insulated bus splice information.

CENTERLINE 2100 Motor Control Centers Joining and Splicing Vertical Sections
Required Tools
These tools are required for joining and splicing your MCC sections: � Assorted screwdrivers � Sockets (including 9/16" deep well and 5/16" sockets) � Torque wrench
Joining MCCs
To join motor control center vertical sections, follow these procedures.
NEMA 1, 1G, and 12
Physical restrictions at your installation do not allow the following sequence to be followed exactly as stated. The splice kit, if necessary, is located within a horizontal wireway or blank unit space. On six space factor frame-mounted units, the splice kit is within the unit. A fluorescent pink, removable label (on the outside of the compartment) designates the location.
1. Locate splice kits and set aside for later use. 2. Remove top and bottom horizontal wireway covers as shown in Figure 2 and Figure 3. 3. Remove the wood shim used in transportation from the side of the MCC. 4. Remove top, bottom, and center end closing plates, if present, to expose joining holes (referred to as A and B in Figure 2 and Figure 3) of the
MCC. Joining holes that are not covered by end closing plates can contain 1/4-20 hex head thread-forming screws on the left side and removable plastic plugs on the right side. These screws and plugs are accessible both from within the vertical wireway and from the outside surface of the vertical side plate. The screws and plugs must be removed from the side plates to be joined. See Figure 2 and Figure 3. 5. Remove the vertical wireway cover and horizontal bus splice access cover from the sections to be joined. See Figure 1 and Figure 7 for location. 6. Pull all `bottom entry' cables, if any are present, through the conduits to a point where they are accessible when the MCC is positioned.
IMPORTANT For NEMA 12 MCCs, see NEMA 12 Sealing Instructions, publication 2100-IN037. This publication is shipped with the splice kit.
7. Slide sections together, make sure that cabinets are level, and that the holes in side sheets line-up with adjacent holes. See Figure 2 for location.
IMPORTANT Make sure that cabinets are level and pushed together, tightly. Do not use hardware to draw cabinets together.
8. Join the two MCCs by using the hardware furnished with the splice kit. � Pass the 1/4-20 hex head thread-forming screw from inside the left MCC through joining holes (A in Figure 2 and Figure 3) and engage the screws with the holes that are located in the right center. See Torque Requirements on page 15. � Pass the 1/4-20 x 5/8 hex screw from inside the left center through joining hole (B in Figure 2 and Figure 3) and secure with the 1/4-20 steel nut. See Torque Requirements on page 15.
9. Secure the MCC to the floor as required by local code. 10. Inspect the interior for dust and dirt.
We recommend that you use a vacuum cleaner to clean the interior of the MCC.
IMPORTANT Do not clean by using compressed air. It contains moisture and can blow debris into the control equipment.

Rockwell Automation Publication 2100-IN010E-EN-P - November 2018

Figure 1 - Typical 15" Deep MCC Construction
Removable Top Plate Left-Hand Top End Closing Plate (2 on 20" Deep Sections
Horizontal and Vertical Bus Support Vertical Power Bus Horizontal Power Bus Left-Hand Center End Closing Plate
Vertical Plug-in Ground Bus
Left-Hand Side Plate Assembly
Horizontal Ground Bus, Top or Bottom Left-Hand Bottom End Closing Plate (2 on 20" Deep Sections)

CENTERLINE 2100 Motor Control Centers Joining and Splicing Vertical Sections
Lift Angle Top Horizontal Wireway Baffles
Top Horizontal Wireway Pan
Top Horizontal Wireway Cover Right-Hand Unit Support (Vertical Wireway)
Bus Splice Access Cover Vertical Wireway Cover
Section Nameplate
Vertical to Horizontal Bus Connection Access Cover Vertical Bus Covers (three Piece Assembly) Vertical Wireway Door
Unit Support Pan
Sealing Strap (Top and Bottom)
Bottom Support Angle
Bottom Horizontal Wireway Cover

Rockwell Automation Publication 2100-IN010E-EN-P - November 2018

CENTERLINE 2100 Motor Control Centers Joining and Splicing Vertical Sections
Figure 2 - Example of 15" Deep MCC
A - Use a 1/4-20 hex head thread-forming screw B - Use a 1/4-20 x 5/8 hex screw and secure with a 1/4-20 steel nut See Torque Requirements on page 15.

Ground Bus (Top Option(1))

Top Wireway

Top Horizontal

Wireway Cover

Top Mounted Neutral (Optional) Phase 1 Power Bus Phase 2 Power Bus
B Phase 3 Power Bus Bottom Mounted Neutral (Optional)
A
(1) Ground bus is required. The ground bus can be in the bottom, top, or bottom and top.

A A

7 in.

Bottom Horizontal Wireway Cover

15 in.
Ground Bus (Bottom Option (1)

A Bottom Wireway

Rockwell Automation Publication 2100-IN010E-EN-P - November 2018

Figure 3 - Example of 20" Deep MCCs
20" MCC with Standard Bus

Top Wireway with closing plate
A

Ground Bus (Top Option(1))
Top Wireway
Top Horizontal Wireway Cover

CENTERLINE 2100 Motor Control Centers Joining and Splicing Vertical Sections

20" MCC with Bumped Back Bus

Top Wireway with closing plate
A

Ground Bus (Top Option(1))

Top Wireway

Top Horizontal Wireway Cover

Top Mounted

Neutral (Optional)

Phase 1 Power Bus

Phase 2 Power Bus

B A
Phase 3 Power Bus

Bottom Mounted

Neutral (Optional)

12 in.

Bottom Horizontal Wireway Cover
A A

Bottom Wireway with closing plate

20 in.
Ground Bus (Bottom Option (1))

Bottom Wireway

A - Use a 1/4-20 hex head thread-forming screw B - Use a 1/4-20 x 5/8 hex screw and secure with a 1/4-20 steel nut

See Torque Requirements on page 15.

Top Mounted Neutral (Optional) Phase 1 Power Bus Phase 2 Power Bus
B Phase 3 Power Bus Bottom Mounted Neutral (Optional)
A
Bottom Wireway with closing plate

A A A

12 in.
Bottom HorizontalWireway Cover

20 in.

Bottom Wireway

Ground Bus (Bottom Option (1))

(1) Ground bus is required. The ground bus can be in the bottom, top, or bottom and top.

Rockwell Automation Publication 2100-IN010E-EN-P - November 2018

CENTERLINE 2100 Motor Control Centers Joining and Splicing Vertical Sections
NEMA 3R and 4
1. Remove 3R/4 side sheet from end of section, being spliced, if present (3R End Closing Plate), see Figure 5 for details. Figure 4 - NEMA 3R/4 without Side Sheet.

Holes to Tie Cabinet Front Together

Holes to Mount Cabinet Spacer

Holes to Tie Cabinet Front Together

Holes to Mount Cabinet Spacer

Holes to Tie Cabinet Front Together

2. Mount cabinet spacer (supplied with Splice Kit) to right-hand shipping block, by using 1/4 - 20 X 3/4" thread-forming screws. 3. Insert the thread-forming screws through large hole in cabinet spacer and bolt to cabinet.
See Figure 4 and Figure 5 for location and Torque Requirements on page 15.

Rockwell Automation Publication 2100-IN010E-EN-P - November 2018

Figure 5 - NEMA 3R/4
Front View

Drip Hood Angle

Cabinet Spacer

Gasket

CENTERLINE 2100 Motor Control Centers Joining and Splicing Vertical Sections

Side Sheet

Left-Hand Shipping Block
Top View

Right-Hand Shipping Block

Wireway Extension

Cabinet Spacer

Gasket to be installed in the field

Wireway Extension
4. Remove drip hood angle from shipping block being spliced, see Figure 5. 5. Install gasket (supplied with splice kit) on back plate and top plate (if not present on cabinet), see Figure 5. 6. Slide sections together, make sure that cabinets are level, and cabinet spacers and holes in front flange lines-up with adjacent holes, see
Figure 5. 7. Install 1/4-20 X 3/4" thread-forming screws through left-hand shipping block side-plate into cabinet spacer.
These holes are accessed through the top and bottom horizontal wireways. See Torque Requirements on page 15.
IMPORTANT Make sure that cabinets are level and pushed tight together. Do not use hardware to draw sections together.

Rockwell Automation Publication 2100-IN010E-EN-P - November 2018

CENTERLINE 2100 Motor Control Centers Joining and Splicing Vertical Sections
8. To secure sections together, install six 1/4-20 X 3/4" thread-forming screws in the front flange. Screws must be installed from the left shipping block through into the right block. This area can be accessed by opening the NEMA 3R/4 doors. See Figure 4 for details. See Torque Requirements on page 15.
9. Replace the drip hood angle removed in Step 3. 10. Make sure that hardware is inserted through the drip angle and clearance hole in top plate before threading into adjacent top plate.
See Torque Requirements on page 15. 11. Install Wireway extensions.
a. From top and bottom wireway in right-hand shipping block, insert extension through wireway opening and hook lip on wireway opening of left-hand section.
b. To secure extension to the wireway opening in the right-hand section, install 1/4-20 X 1/2" thread-forming screw in wireway extension. This extension does not bolt into the cabinet, but is clamped onto the wireway opening. See Figure 5 for details.
Splicing MCCs
A main horizontal-bus splice kit must be added between the horizontal bus work of the MCCs. In addition, the neutral bus splice kit, if necessary, and the ground bus splice kit must be installed to complete the splicing operation. See Splicing Procedures on page 9 for instructions. To gain access to the horizontal bus, remove the plug-in units in front of the horizontal bus in the first vertical section of the right center.
Plug-in Unit Removal
To complete plug-in unit removal, see Installing Units with Horizontal Operating Handles, publication, 2100-IN060, and Installing Units with Vertical Operating Handles, publication 2100-IN014. The following is an overview of the removal process for a plug-in unit:
1. Open unit door by turning door latch a quarter turn.
TIP Door removal is not necessary when removing a unit; however, if door removal is desired, follow these steps. Step b can be required even if the door is not removed.
2. Remove the unit door. a. Open the door fully. b. If present, remove control station housing by loosening the two captive screws that are at the top and bottom of the control station housing on the front of the unit door. c. To remove the hinge pins, use a screwdriver to slide up the pins. d. Swing door to near closed position and lift off the door.
3. Loosen the screw type latches at the front of the unit. Most units have one at the top and one at the bottom, but units two space factors and larger have two at the top.
4. Detach necessary wiring from unit. 5. Place wire/terminal block in line with wiring clearance tunnel at lower right of unit. 6. Pull unit forward to unplug from bus, by using the upper right latch assembly and the lower left tab handle. 7. Remove the unit support pan, see Figure 6.
a. Use a screwdriver to pry the plastic retaining clip from the right side of the support pan. The clip is visible in the vertical wireway.
b. Lift the right side of pan approximately 4 inches. c. Pull right side of pan forward to release from left rear slot. d. Push back on left side of pan until it is free.

Rockwell Automation Publication 2100-IN010E-EN-P - November 2018

Figure 6 - Removal of Support Pan

CENTERLINE 2100 Motor Control Centers Joining and Splicing Vertical Sections

Splicing Procedures
To splice vertical sections together, follow these steps.
1. Remove the horizontal bus splice access cover to expose the horizontal bus splicing, see Figure 7. Figure 7 - Bus Splice Access Cover

Bus Splice Access Cover In Place

Bus Splice Access Cover Removed

2. Assemble splice bars to the bus work of the vertical sections as shown in Figure 8...Figure 15.

3. If additional access to the splice is desired, loosen the fastening screws and remove the bus access plate that is in the vertical wireway of the center (to the left of the splice).

The horizontal bus now is exposed to the left and right of the splice for added convenience. The splicing kit contains either two or four sets of hardware per splice bar, depending on the current rating of the horizontal bus.

Rockwell Automation Publication 2100-IN010E-EN-P - November 2018

CENTERLINE 2100 Motor Control Centers Joining and Splicing Vertical Sections
4. See Bus and Splice Bar Dimensions (Series P and earlier) on page 14 for bus dimensions and mounting holes. 5. Tighten to the torque specifications listed in the Torque Requirements on page 15.
IMPORTANT Do not grease or lubricate the mounting hardware.
6. Optional, install the insulating components. See CENTERLINE 2100 Motor Control Centers Insulated Bus Splice Installation Instructions, publication 2100-IN096 for information regarding installation of the insulating components.
7. Replace covers and plates and check all bolts and nuts for tightness. 8. Replace units in their respective stations.
ATTENTION: All covers and doors must be in place before you apply power to the MCC. If units are removed, they must be replaced with the appropriate items, such as units, doors, and unit support pans.
Figure 8 - 600...1200 Amp Main Horizontal Bus Splicing Detail and Configuration Example
Main Horizontal Bus or Neutral Bus

Two Hole Main Horizontal Splice

One-piece assembly of nut and conical spring washer

Front Splice Kit Configuration Example (Top View - two sections)

Flat Washers

Bus Clamps
Main Horizontal Bus or Neutral Bus

See Table 1 for bus size and thickness.

Rockwell Automation Publication 2100-IN010E-EN-P - November 2018

CENTERLINE 2100 Motor Control Centers Joining and Splicing Vertical Sections Figure 9 - 800...1200 Amp Insulated Horizontal Bus Splicing Detail and Configuration Example

Four Hole Main Horizontal Splice
One-piece assembly of nut and conical spring washer
Front Splice Kit Configuration Example (Top View - two sections)

Flat Washers

Bus Clamps
Main Horizontal Bus or Neutral Bus See Table 1 for bus size and thickness.

Figure 10 - 1600...3000 Amp Horizontal Bus Splicing Detail and Configuration Example
Four Hole Main Horizontal Splice
Four Hole Main Horizontal Splice

One-piece assembly of nut and conical spring washer
Front Splice Kit Configuration Example (Top View - two sections)

Flat Washers

Bus Clamps
Main Horizontal Bus or Neutral Bus See Table 1 for bus size and thickness.

TIP For 1600 A Insulated bus solutions in 15" deep sections, angle and pivot the longer bus clamps into position for easier installation.

Rockwell Automation Publication 2100-IN010E-EN-P - November 2018

CENTERLINE 2100 Motor Control Centers Joining and Splicing Vertical Sections
Figure 11 - 2000 Amp Main Breaker and 1600 Amp Horizontal Bus Splicing Detail and Configuration Example
Main Horizontal Splice 2000 A Main Horizontal Bus or Neutral Bus

One-piece assembly of nut and conical spring washer
Front

Flat Washers

Bus Clamps
Splice Spacer Bar 1600 A Main Horizontal Bus or Neutral Bus

Splice Kit Configuration Example (Top View - two sections)

See Table 1 for bus size and thickness.

Figure 12 - Offset `Z' 600...1200 Amp Bus Splicing Detail and Configuration Example

Horizontal Bus or Neutral Bus (5 in. deeper)

Bus Clamps

One-piece assembly of nut and conical spring washer

Front Flat Washers
Splice Kit Configuration Example (Top View - three sections)

Main Horizontal Splice
Horizontal Bus or Neutral Bus (standard location)

See Table 1 for bus size and thickness.

Rockwell Automation Publication 2100-IN010E-EN-P - November 2018

CENTERLINE 2100 Motor Control Centers Joining and Splicing Vertical Sections

Figure 13 - Offset `Z' 800...1600 Amp Insulated Bus Splicing Detail and Configuration Example

Horizontal Bus or Neutral Bus (5 in. deeper)

Bus Clamps

One-piece assembly of nut and conical spring washer

Epoxy Coating

Horizontal Bus or Neutral Bus (standard location)

Front Flat Washers
Splice Kit Configuration Example (Top View - three sections)

Main Horizontal Splice

See Table 1 for bus size and thickness.
Figure 14 - Offset `Z' 1600...3000 Amp Bus Splicing Detail and Configuration Example
Bus Clamps Horizontal Bus or Neutral Bus (5" deeper)
One-piece assembly of nut and conical spring washer

Main Horizontal Splice Front
Horizontal Bus or Neutral Bus (standard location) Main Horizontal Splice (used only for 2500 ...3000 A configurations) Flat Washers Splice Kit Configuration Example (Top View - three sections)
See Table 1 for bus size and thickness.

Rockwell Automation Publication 2100-IN010E-EN-P - November 2018

CENTERLINE 2100 Motor Control Centers Joining and Splicing Vertical Sections
Figure 15 - 25 in. Deep `Z' 600...1200 Amp Bus Splicing Detail and Configuration Example
Main Horizontal Bus or Neutral Bus (5" Deeper)
Main Horizontal Splice One-piece assembly of nut and conical spring washer

Shrink Tube

Bus Clamps

Slice Kit Configuration Example (Top View - three Sections)

Front

Flat Washers

Main Horizontal Splice or Neutral Bus (standard location)

See Table 1 for bus size and thickness.

Table 1 - Bus and Splice Bar Dimensions (Series P and earlier)

Amp

Material

Copper

600

Aluminum

Copper

800

Aluminum

800 Insulated

Copper

1200

Copper

1200 Insulated

Copper

1600

Copper

1600 Insulated

Copper

2000

Copper

2500/3000

Copper

(1) Used to splice standard depth bus to bus 5 in. deeper.

Standard NEMA 1, 1G, 12, and 3R/4 Splice Bar Information

Quantity

Thickness, in.

Width, in.

Splice Mounting Holes

0.125

0.1875

0.250

0.500

0.250

0.375

0.625

0.375

Straight Splice X X X X X X X X
X
X X

Z-splice(1)
X X X X X X X
X X

Rockwell Automation Publication 2100-IN010E-EN-P - November 2018

CENTERLINE 2100 Motor Control Centers Joining and Splicing Vertical Sections

Torque Specifications and Table

Table 2 - Conversions

Decimal, in. 0.125 0.250 0.500 .1875

Fraction, in. 1/8 1/4 1/2 3/16

Millimeter, mm 3.175 6.350 12.700 4.763

Decimal, in. 0.375 0.625 3 4

Fraction, in. 3/8 5/8 3 4

Millimeter, mm 9.525 15.875 76.200 101.600

Tighten all bus connections with a torque wrench and socket according to intervals established by your maintenance policy. Do not grease or lubricate the hardware.

Table 3 - Torque Requirements
Description Lug attachment bolts 1/2-13 Hardware Horizontal to vertical bus connection 3/8-16 Hardware Horizontal splice connection 3/8-16 Hardware Connecting Hardware 1/4-20 Hardware 10-32 Hardware

Torque 45 lb�ft � 5 lb�ft (61 N�m � 6 N�m) 28 lb�ft � 4 lb�ft (38 N�m � 5 N�m) 28 lb�ft � 4 lb�ft (38 N�m � 5 N�m) 55 lb�in. � 5 lb�in (6.2 N�m � 0.6 N�m) 32 lb�in � 3 lb�in (3.6 N�m � 0.4 N�m)

Additional Resources

These documents contain additional information concerning related products from Rockwell Automation.

Resource
CENTERLINE 2100 Low Voltage Motor Control Centers Instruction Manual, publication, 2100-IN012.
CENTERLINE 2100 Motor Control Centers (MCC) Units with Vertical Operating Handles Installation Instructions, publication 2100-IN014. CENTERLINE 2100 Motor Control Center (MCC) Units with Horizontal Operating Handles Installation Instructions, publication 2100-IN060.
Busbar Insulation Components Installation Instructions, publication 2100-IN096.
Industrial Automation Wiring and Grounding Guidelines, publication 1770-4.1.
Product Certifications website, rok.auto/certifications.

Description
Provides general instructions for MCC Units.
Provides information on installing vertical handle units.
Provides information to install units with horizontal operating handles.
Provides instructions to install the insulation components. Provides general guidelines for installing a Rockwell Automation industrial system. Provides declarations of conformity, certificates, and other certification details.

You can view or download publications at http://www.rockwellautomation.com/global/literature-library/overview.page.

Rockwell Automation Publication 2100-IN010E-EN-P - November 2018

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Publication 2100-IN010E-EN-P - November 2018
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