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80459-641-01E Model 6 Motor Control Centers
10/2012 Table of Contents
© 1999–2012 Schneider Electric All Rights Reserved 3
ENGLISH
Table of Contents
Section 1—About the Model 6 Motor Control Center
........................... 10
100 Millisecond, Arc-Rated MCC, Upstream Over-Current Protection
Device (OCPD) Requirements .................................................................. 11
Schneider Electric Literature List .............................................................. 11
Section 2—Safety Precautions
............................................................... 13
Section 3—Receiving, Handling, and Storing the MCC
........................ 14
Receiving the MCC ................................................................................... 15
Handling the MCC ..................................................................................... 15
Equipment Needed .............................................................................. 15
Moving the MCC ....................................................................................... 15
Storing the MCC ........................................................................................ 17
Section 4—Installing the MCC
................................................................ 18
Locating the MCC ..................................................................................... 18
Space Requirements ........................................................................... 18
Aligning the MCC ................................................................................ 19
Joining NEMA Type 1 / NEMA Type 1 Gasketed / NEMA Type 12 Sections 20
Positioning the MCC ............................................................................ 20
Joining Corner Channels ..................................................................... 21
Joining Section Side Channels ............................................................ 22
Securing Structures to the Floor .......................................................... 23
Seismic Certification of Model 6 MCCs ..................................................... 24
Responsibility for Mitigation of Seismic Damage ................................. 24
Securing Structures to Floor—Seismic Hazard Designated Locations 25
Securing Structures to Wall—Seismic Hazard Designated Locations . 27
Splice Gaskets for NEMA Type 1 Gasketed and Type 12 Enclosures ..... 28
Splicing With No P Gasketing ................................................................... 29
Splicing With P Gasketing ......................................................................... 29
Splice to Existing Left .......................................................................... 29
Splice to Existing Right ........................................................................ 29
Joining New Style NEMA Type 3R Enclosures to Old Style
NEMA Type 3R Enclosures ...................................................................... 30
Joining to the Left Side of an Existing NEMA Type 3R MCC Enclosure. . 30
Joining to the Right Side of an Existing NEMA Type 3R MCC Enclosure 33
Joining NEMA Type 3R Sections ........................................................ 34
Splicing Power Bus for NEMA Type 1 and Type 12 Enclosures ............... 35
Power Bus Splicing MCCs with Single Bar/Phase Splice Kit (600 A
and 800 A, Copper Horizontal Bus, 65,000 A Short Circuit or Less,
Shipped after August 2012) ................................................................. 36
Power Bus Splicing MCCs with Multiple Bar/Phase Splice Kit ............ 38
Splicing Power Bus in NEMA Type 3R Enclosures ................................... 40
Ground Bus Splicing for NEMA Type 1, Type 12, and Type 3R ............... 42
Power Bus Splicing of 2500 A Bus with 100,000 A Short Circuit Rating ... 42
Splicing Offset Horizontal Bus (Left Side of Structure Only) ..................... 44
Conductor Entry ........................................................................................ 45
Vent Hood Installation for MCCs with 2500 A Horizontal Bus ................... 46
Vented Pull Box Installation for MCCs with 2500 A Horizontal Bus ................ 48
Load and Control Wiring ........................................................................... 49
Crimp Lug Cable Assembly for Cabled Disconnect Unit Installation ......... 50
Cable Connection Torque Values ............................................................. 51
Component Instructional Information ........................................................ 51
Modifying Fuse Clip Locations .................................................................. 52