6 Publication 2100-IN012C-EN-P - April 2009
Table of Contents
Remove a Plug-in Unit with a Horizontal Operating Handle
from a Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Remove the Support Pan. . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Chapter 5
Arc Flash Protection Marking as
Required by the National
Electrical Code
Flash Protection Marking Requirement . . . . . . . . . . . . . . . . . 59
110.16 Flash Protection . . . . . . . . . . . . . . . . . . . . . . . . . 59
Arc Flash Marking Clarification . . . . . . . . . . . . . . . . . . . . . . 60
Rockwell Automation Services . . . . . . . . . . . . . . . . . . . . . . . 60
Chapter 6
Operator Handle and Unit
Interlock
Defeating the Unit Door Interlock . . . . . . . . . . . . . . . . . . . . 61
Open the Door when the Operating Handle is in the
ON/I Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Defeating the Unit Interlock Lever . . . . . . . . . . . . . . . . . . . . 63
Energize a Unit with the Unit Door Open . . . . . . . . . . . . 63
Locking Provisions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Lock Vertical Operating Handles in the OFF/O Position . 64
Lock Horizontal Operating Handles in the OFF/O
Position. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Lock Units with Operating Handles in the ON/I Position . 66
Unit Interlocks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Chapter 7
Final Check List Before Energizing
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Pre-Energizing Check Procedure . . . . . . . . . . . . . . . . . . . . . 73
Perform the Pre-energizing Check Procedure . . . . . . . . . . . . 74
Chapter 8
Energizing the Equipment
Energize the Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Chapter 9
Maintenance
Maintain the MCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Disconnect the Switch and Contact Lubrication . . . . . . . . . . 94
Use Thermal Infrared or Other Temperature Measurement
Techniques for Preventive Maintenance . . . . . . . . . . . . . . . . 95
Inspect the Units for Signs of Overheating . . . . . . . . . . . 96
Chapter 10
Maintenance After Fault Condition
Maintain the MCC After a Fault Condition . . . . . . . . . . . . . . 99
Chapter 11
Renewal Parts
Order Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
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