Rockwell Automation Allen-Bradley CENTERLINE 1500 User manual

Medium Voltage Controllers, 400A One-High Cabinet,
Standard and Arc-Resistant Enclosure
Publication 1512A-UM100G-EN-P
User Manual

Important User Information
Read this document and the documents listed in the additional resources section about installation, configuration, and
operation of this equipment before you install, configure, operate, or maintain this product. Users are required to
familiarize themselves with installation and wiring instructions in addition to requirements of all applicable codes, laws,
and standards.
Activities including installation, adjustments, putting into service, use, assembly, disassembly, and maintenance are required
to be carried out by suitably trained personnel in accordance with applicable code of practice.
If this equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be
impaired.
In no event will Rockwell Automation, Inc. be responsible or liable for indirect or consequential damages resulting from the
use or application of this equipment.
The examples and diagrams in this manual are included solely for illustrative purposes. Because of the many variables and
requirements associated with any particular installation, Rockwell Automation, Inc. cannot assume responsibility or
liability for actual use based on the examples and diagrams.
No patent liability is assumed by Rockwell Automation, Inc. with respect to use of information, circuits, equipment, or
software described in this manual.
Reproduction of the contents of this manual, in whole or in part, without written permission of Rockwell Automation,
Inc., is prohibited.
Throughout this manual, when necessary, we use notes to make you aware of safety considerations.
Labels may also be on or inside the equipment to provide specific precautions.
Allen-Bradley, Rockwell Software, Rockwell Automation, and TechConnect are trademarks of Rockwell Automation, Inc.
Trademarks not belonging to Rockwell Automation are property of their respective companies.
WARNING: Identifies information aboutpractices or circumstances that can cause an explosion in a hazardous environment,
which may lead to personal injury or death, property damage, or economic loss.
ATTENTION: Identifies information about practices or circumstances that can lead to personal injury or death, property
damage, or economic loss. Attentions help you identify ahazard, avoid a hazard, and recognize the consequence.
IMPORTANT
Identifies informationthat is critical for successful application and understanding of the product.
SHOCK HAZARD: Labels may be on or inside the equipment, for example, a drive or motor, to alert people that dangerous
voltage may be present.
BURN HAZARD: Labels may be on or inside the equipment, for example, a drive ormotor, to alert people that surfaces may
reach dangerous temperatures.
ARC FLASH HAZARD: Labels may be on or inside the equipment, for example, a motor control center, to alert people to
potential Arc Flash. Arc Flash will cause severe injury or death. Wear proper Personal Protective Equipment (PPE). Follow ALL
Regulatory requirements for safe work practices and for Personal Protective Equipment (PPE).

Rockwell Automation Publication 1512A-UM100G-EN-P - February 2015 3
Summary of Changes
This manual contains new and updated information.
New and Updated
Information
This table contains the changes made to this revision.
Topic Page
Replaced Typical Structure and Typical Nameplate graphics 10
Added Environmental Conditions 11
Transposed step 3 and 4 26
Added Attention table 29
Added step to procedure for Joining Sections 29
Modified Attention table 37
Replaced Typical Ground Bus Splicing Configuration graphic 41
Added Isolation Switch Kit and stocking quantity 75
Added (Series R or higher) to 80158-707-53 75
Added 50 kA to Overview 77
Added Attention table 86
Added instructions to Cabinet Preparation 86
Added Attention table 95
Added instructions to Cabinet Preparation 95

4Rockwell Automation Publication 1512A-UM100G-EN-P - February 2015
Summary of Changes
Notes:

Rockwell Automation Publication 1512A-UM100G-EN-P - February 2015 5
Table of Contents
Chapter 1
General Information
Document Scope. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Starter Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Recommended Torque Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Environmental Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
High Altitude Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Chapter 2
Installation – Standard Enclosure
Door Opening Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Opening the Low Voltage Doors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Opening the Medium Voltage Doors. . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Anchoring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Joining Sections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Access to the Power Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Rear Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Side Access. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Front Access – Top Incoming Line Cables . . . . . . . . . . . . . . . . . . . . . 18
Front Access – Bottom Incoming Cables . . . . . . . . . . . . . . . . . . . . . . . 20
Load Cable Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Chapter 3
Installation – Arc-Resistant
(ArcShield)
Door Opening Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Opening the Low Voltage Doors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Opening the Medium Voltage Door . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Anchoring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Joining Sections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Access to the Power Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Rear Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Side Access. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Front Access – Bottom Incoming Cables (Bottom Entry/Exit). . . 32
Front Access – Top Incoming Cables (Top Entry/Exit) . . . . . . . . . 34
Load Cable Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Chapter 4
Common Installation
Bus Splicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Power Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Insulated Power Bus Splicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Ground Bus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Incoming Line Cable Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Installation of Current Transformer Barrier . . . . . . . . . . . . . . . . . . . . . . . . 43
Hi-Pot and Megger Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Start-up Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Contactor Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Preliminary Checks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

6Rockwell Automation Publication 1512A-UM100G-EN-P - February 2015
Table of Contents
Testing Contactor Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Chapter 5
Maintenance
Tool Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Recommended Torque Values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Door Interlock Circumvention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Power Lock-out Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Fuse Removal and Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
BOLT-ON FUSE Removal/Installation. . . . . . . . . . . . . . . . . . . . . . . . 56
CLIP-ON FUSE Removal/Installation. . . . . . . . . . . . . . . . . . . . . . . . . 56
Contactor Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Remove the Contactor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Contactor Interlock Rod Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
To Reduce the Gap Distance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
To Increase the Gap Distance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Isolation Switch Mechanism Inspection and Lubrication . . . . . . . . . . . . 62
Isolation Blade Switch Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Isolation Switch Mechanism Grounding Adjustment. . . . . . . . . . . . . . . . 67
Auxiliary Contacts Inspection and Replacement . . . . . . . . . . . . . . . . . . . . 68
Auxiliary Contacts Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Adjusting the Normally Open (ISa) Contacts . . . . . . . . . . . . . . . . . . . 69
Adjusting the Normally Closed (ISb) Contacts. . . . . . . . . . . . . . . . . . 70
Adjusting the Change-of-State Point . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Emergency Circumvention Procedure for Power Cell Entry. . . . . . . . . . 71
Installing Z-clip with Isolation Switch Handle in the OFF Position . .
73
Installing Z-clip with Isolation Switch Handle in the ON Position 73
Chapter 6
Spare Parts
Spare Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Appendix A
ArcShield Unit Information
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
ArcShield Design. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Exhaust Systems: Chimney or Plenum Option . . . . . . . . . . . . . . . . . . . . . . 78
Plenum Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Plenum Exhaust Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Additional Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Chimney Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Chimney Exhaust Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Appendix B
ArcShield Plenum Installation
Instructions
Recommended Torque Values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Plenum Bracing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
General Plenum Layout for ArcShield Line-up. . . . . . . . . . . . . . . . . . . . . . 84

Rockwell Automation Publication 1512A-UM100G-EN-P - February 2015 7
Table of Contents
STEP 1 – Mounting a Single Plenum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Cabinet Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Plenum Placement on Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
STEP 2 – Alignment of “Side-by-Side” Plenums . . . . . . . . . . . . . . . . . . . . 87
STEP 3 – Sequence of Final Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
STEP 4 – Closing the Front of the Plenum Sections . . . . . . . . . . . . . . . . 89
STEP 5 – Extension and Elbow Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 89
STEP 6 – Mounting Extension/Elbow to Plenum “Line-up”. . . . . . . . . 90
STEP 7 – Additional Mounting Support. . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Appendix C
ArcShield Chimney Installation
Instructions
Recommended Torque Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
General Plenum Layout for ArcShield Line-up . . . . . . . . . . . . . . . . . . . . . 94
Cabinet Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Chimney Placement on Structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

8Rockwell Automation Publication 1512A-UM100G-EN-P - February 2015
Table of Contents

Rockwell Automation Publication 1512A-UM100G-EN-P - February 2015 9
Chapter 1
General Information
Document Scope This User Manual pertains to the Rockwell Automation Bulletin 1512A medium
voltage controller. The Bulletin 1512A structure provides one complete medium
voltage controller unit.
The installation section provides instructions for both the standard enclosure
type and the Rockwell Automation arc resistant type (ArcShield).
The product Bulletin numbers covered by this document are:
•1512A 200/400 A FVNR controller
•1512AT 200/400 A Transformer Feeder
•1512AP 200/400 A Prepared Space
This document may also be used as a reference guide for the following Bulletin
numbers:
•1512DM 200/400 A VFD Input Contactor Units
•1512DO 200/400 A VFD Output Contactor Units
•1512M 200/400 A VFD Output Bypass Starter
•1562E 200/400 A MV SMC Flex Solid-State
(up to 4800 V) Reduced Voltage Starter
•1591B Incoming Line Unit
•1592BF Fused Load Break Switch for Feeders
•1592BP Fused Load Break Switch for Feeders, prepared space
Starter Identification A nameplate is attached to the right-side flange of the structure (see Figure 1).
Refer to the nameplate for information such as series number, section number,
NEMA enclosure type, unit ratings, and bus ratings.
IMPORTANT
This document is to be used for all Bulletin 1512A unit types, including arc
resistant (ArcShield™) units. Important information specifically for ArcShield
units can be found in Appendix A, Appendix B and Appendix C.
ATTENTION: Users must refer to the information in Appendix A, Appendix B
and Appendix C to correctly install and maintain ArcShield arc resistant units.
Failure to do so may negate the arc resistant benefits provided by ArcShield,
exposing personnel to risk of serious injury or death.

10 Rockwell Automation Publication 1512A-UM100G-EN-P - February 2015
Chapter 1 General Information
Figure 1 - Typical Structure Nameplate
A nameplate is also found in the low voltage compartment (see Figure 2) with
specific unit motor application information.
Figure 2 - Typical Unit Nameplate
Refer to these nameplates whenever you contact Rockwell Automation for
assistance. Be prepared to provide such information as series number, structure
series, unit series, diagram schematic and catalog number.

Rockwell Automation Publication 1512A-UM100G-EN-P - February 2015 11
General Information Chapter 1
Recommended Torque
Values
When reinstalling components, or when reassembling the cabinet, tighten the
following bolt sizes to the specified torque values:
Table 1 - Torque Values for Hardware
Environmental Conditions The controller must accept nominal plant power of 2400V, 3300V, 4200V,
4800V, 5500V, 6600V, 6900V (+5/-15%), or 7200 (+0/-15%), 3 phase
50/60 Hz (± 3%).
The standard controller must operate in an ambient temperature range of
0…40 °C (32…104 °F) with a relative humidity of up to 95% (non-condensing).
Higher ambient temperature conditions are supported with factory assistance.
The equipment shall be capable of being stored in an environment with an
ambient temperature range of -40...85 °C (-40...185 °F).
If storage temperature fluctuates or if humidity exceeds 85%, space heaters must
be used to prevent condensation. The equipment must be stored in a heated
building having adequate air circulation.
Rockwell Automation products are built using materials that comply with
Class 1: Industrial Clean Air sulfur environments as defined in IEC Standard
60654-4 (Operating Conditions for Industrial-Process Measurement and
Control Equipment), and G1 as defined in ISO-S71.04-1985 (Environmental
Conditions for Process Measurement and Control Systems: Airborne
Contaminants).
High Altitude Application
The equipment shall operate at altitudes from 0…1000 m (0…3300 ft) above sea
level, without derating. For applications above 1000 m (3300 ft), the maximum
current and basic impulse levels (BIL) of the controllers shall be derated, and
vacuum contactors may be compensated for operation at the specified altitude
(see publication 1500-SR020_-EN-P).
1/4 in. hardware 8 N•m (6 lb•ft)
5/16 in. hardware 15 N•m (12 lb•ft)
3/8 in. hardware 27 N•m (20 lb•ft)
1/2 in. hardware 65 N•m (48 lb•ft)
WARNING: The equipment should never be stored outside.

12 Rockwell Automation Publication 1512A-UM100G-EN-P - February 2015
Chapter 1 General Information
Notes:

Rockwell Automation Publication 1512A-UM100G-EN-P - February 2015 13
Chapter 2
Installation – Standard Enclosure
Door Opening Procedure Opening the Low Voltage Doors
Low voltage doors are identified as LV in Figure 3.
1. To access the low voltage compartment, use a flat-head screwdriver and
turn both of the 1/4-turn fasteners, located on the low voltage door, 90° in
a counterclockwise direction.
2. The door is now released and will swing open.
3. Reverse the procedure to secure the doors.
Figure 3 - Standard Cabinet
Refer to Access to the Power Bus on page 17 for the procedure to open the swing-
out low voltage panel behind the low voltage door.
IMPORTANT
For information on the installation site preparation, see Publication
MV-QS050_-EN-P.
ATTENTION: Use suitable personal protective equipment (PPE) per local codes
or regulations. Failure to do so may result in severe burns, injury or death.
.
.
.
.
Low Voltage Door
Medium Voltage Door

14 Rockwell Automation Publication 1512A-UM100G-EN-P - February 2015
Chapter 2 Installation – Standard Enclosure
Opening the Medium Voltage Doors
Medium voltage door is identified as MV in Figure 3.
Refer to Access to the Power Bus on page 17 for the procedure to open the swing-
out low voltage panel behind the low voltage door (for standard cabinet only).
1. Electrically open the contactor by pressing the STOP button on the starter
or at the remote control location.
2. Move the isolation switch handle to the OFF position.
3. Unscrew the door locking bolts for the medium voltage door.
4. The door is now released and will swing open.
5. Reverse the procedure to close the door
ATTENTION: Medium voltage components may be located behind the swing-
out low voltage panel (standard cabinets only). Complete the power lockout
procedure (refer to Power Lock-out Procedure on page 51 of Chapter 5) before
attemptingtoopen theswing-outlowvoltagepanel.Failuretodosomayresult
in severe burns, injury or death.
ATTENTION: Complete the Power Lockout procedure (refer to Power Lock-out
Procedure on page 51 of Chapter 5) before beginning any service procedures to
the unit. Failure to do so may result in severe burns, injury or death.
IMPORTANT
The medium voltage door has its own isolation switch handle and interlocking
safeguards.
IMPORTANT
Ensurethat the swing-out low voltage panel is in its original position
before attempting to close the MV door. When closing the medium
voltage door, ensure all door locking bolts on the right side of the MV
door are in place and tightened until the door is flush with theflange.
Donotovertightenthebolts.Ifthedooris not securelyfastened,it will
notbepossibletomovethe isolationswitchhandletotheONposition.
ATTENTION: Complete the Power Lock-out procedure (refer to Power
Lock-out Procedure on page 51 of Chapter 5) before beginning any
service procedures to the unit. Failure to do so may result in severe
burns, injury or death.

Rockwell Automation Publication 1512A-UM100G-EN-P - February 2015 15
Installation – Standard Enclosure Chapter 2
Anchoring Place the controller in the desired installation location. The floor must be flat and
level. Use four M12 (1/2 in.) floor mounting bolts to securely fasten the
controller to the mounting surface. See Figure 4 as an example of the location of
the mounting holes in the cabinet.
Figure 4 - Cabinet Floor Plan
NOTESFORSEISMICAPPLICATIONS
• For installations on concrete – the minimum depth and radius of
concrete supporting the cabinet anchors is dependent on seismic loads.
Refer to important information above.
• For installations on a metal structure – the metal plate depth and cabinet
anchoring method is dependent on seismic loads.
TIP
RefertoDimension Drawingprovidedwith orderdocumentationforadditional
details related to cabinet floor plan.
IMPORTANT
Pre-determined cabinets have been designed for Uniform Building Code (UBC)
seismic zone 1, 2A, 2B, 3 and 4, and IBC (International Building Code) seismic
activity without overturning or lateral movement, provided they are securely
mounted according to UBC,IBC and local building codes. This can include
concrete pad design, steel floor designand the sizing of cabinet anchors.
Concrete floor cutouts must not be adjacent to floor anchor bolts and must be
sized to seismic load. Consult factory if floor mounting mustbe reviewed by an
accreditedengineer. Manyjurisdictions requireanengineer fromthe localarea
to review the design. Seismic qualification does notindicate that the
equipment will function properly after a seismic event.
Line cable conduit opening.
Load cable conduit opening for bottom compartment.
Load cable conduit opening for top compartment.
Controlwireconduitopening.Eachopening provides
access to top and bottom compartments.
Mounting holes for M12 (1/2 in.) anchor bolts.
Mounting holes for M12 (1/2 in.) anchor bolts
(required for seismic applications only).
Minimumdistancetoconcretefloorcut-outrequired
for seismic applications.
!.00 (25) x 3.00 (76) removable sill channels.
Front All dimensions in. (mm)

16 Rockwell Automation Publication 1512A-UM100G-EN-P - February 2015
Chapter 2 Installation – Standard Enclosure
Joining Sections
6. Position the left side section on a level surface and secure the section in
place with M12 (1/2 in.) floor mounting bolts (refer to Anchoring on
page 15).
7. When joining NEMA/EEMAC Type 12 sections, apply a continuous
3 mm (1/8 in.) wide bead of silicon sealer around the perimeter of one
section.
8. Remove the side bus access covers if applicable.
9. Position the right section against the left section. Ensure that the surface is
level.
10. Secure the sections together using the 1/4-20 self-tapping screws. Thread
the screw through the 7 mm (0.281 in.) clearance hole to the
corresponding 6 mm (0.219 in.) pilot hole. To access the front clearance
holes of the left-side cabinet, open the medium voltage doors. To access the
rear clearance holes remove the rear covers of the starter. If rear access is
not available, refer to Front Access – Top Incoming Line Cables on
page 18 or Front Access – Bottom Incoming Cables on page 20.
11. Secure the right section to the floor using M12(1/2 in.) floor mounting
bolts (refer to Anchoring on page 15).
Figure 5 - Joining Sections
TIP
Joining hardware can be found in a packagemounted to the front of the
shipping skid. Refer to publication MV-QS050_-EN-P for level floor surface
requirements.
IMPORTANT
For Arc Resistant cabinets, see page 25.
Front
Front
Side Bus
Access Cover
0.219Pilot
Holes (5x)
0.281 Pilot
Holes (5x)
0.281 Pilot
Holes (5x)
0.219Pilot
Holes (3x)

Rockwell Automation Publication 1512A-UM100G-EN-P - February 2015 17
Installation – Standard Enclosure Chapter 2
Access to the Power Bus
Rear Access
1. Remove the hardware securing the center rear bus access cover (Figure 6).
2. Remove the center rear bus access cover.
3. Once the rear bus cover is removed you will see the three bus bars
(Figure 7).
Figure 6 - Access to Power Bus from Side and Rear of Cabinet
Figure 7 - Bus Bars from Back Access
ATTENTION: This procedurerequires contact with medium voltage
components. To avoid shock hazards, lock out incoming power before working
on the equipment (refer to Power Lock-out Procedure on page 51 of Chapter 5).
Verify with a hotstick or appropriate voltage measuring device that all circuits
are voltage free. Failure to do so may result in severe burns,injury or death.
Side Bus
Access Cover
Center Rear Bus
Access Cover

18 Rockwell Automation Publication 1512A-UM100G-EN-P - February 2015
Chapter 2 Installation – Standard Enclosure
Side Access
A side bus access cover is located on each side of the controller.
1. Remove the hardware from the appropriate side bus access cover.
2. Remove the side bus access cover.
3. Once the side bus access cover is removed, you will see the three bus bars.
(Figure 8).
Figure 8 - Side Bus Access Cover Removed
Front Access – Top Incoming Line Cables
1. Complete the Power Lockout Procedure (refer to Power Lock-out
Procedure on page 51 of Chapter 5) for both medium voltage power cells
and the power bus.
2. Open the low voltage cell door (refer to Opening the Low Voltage Doors
on page 13).
3. Open the medium voltage cell doors (refer to Opening the Medium
Voltage Doors on page 14).
4. Remove the two self-tapping screws from the low voltage panel if installed.
(Installed for shipping purposes – see Figure 9).
5. Use a flat head screwdriver and turn both of the 1/4-turn fasteners 180
degrees in a counterclockwise direction.

Rockwell Automation Publication 1512A-UM100G-EN-P - February 2015 19
Installation – Standard Enclosure Chapter 2
Figure 9 - Low Voltage Panel
Figure 10 - Access to Power Bus with Low Voltage Panel Rotated
6. Pull on right-hand side of low voltage panel. Swing low voltage panel to
the front and left of cabinet (see Figure 10).
7. Locate the removable bus access barriers (2).
8. Remove retaining screws from removable bus access barriers to expose
incoming cable connections to main bus (see Figure 11).
9. Install incoming line cables to power bus, torque to specifications (refer
to Recommended Torque Values on page 11 of Chapter 1).
TIP
Thepowercelldoor must bein afully openedposition priortorotating
the low voltage panel.
Remove self-
tapping screws
Remove 1/4
turn fasteners
Swing OpenLow
Voltage Panel
Remove self-
tappingscrewsfrom
Bus Access Barriers
BusAccess
Barriers

20 Rockwell Automation Publication 1512A-UM100G-EN-P - February 2015
Chapter 2 Installation – Standard Enclosure
10. Reverse procedure after cables have been installed.
Figure 11 - Power Bus with Barrier Removed
Front Access – Bottom Incoming Cables
If the incoming cables in your cabinet enter the section from the bottom, follow
the same procedure as for Front Access – Top Incoming Line Cables.
1. Open the power cell door.
2. Locate incoming cable duct at rear left-hand side of power cell (see
Figure 12).
3. Remove self-tapping screws from the cable duct access barriers. Remove
barriers.
4. Route and install incoming line cables to power bus. Torque to
specifications (refer to Recommended Torque Values on page 11 of
Chapter 1).
5. Reverse procedure after cables have been installed.
ATTENTION: Ensure all barriers are replaced before re-energizing the
equipment.Failure to do so may result in electrical faults and cause damage to
equipment or severe injury to personnel.
TIP
Accessto incoming cable duct in the power cell is also required.
Low Voltage Panel
Power Bus