Freedom 2100 Motor Control Center Installation and - Eaton Canada

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Instruction Booklet IM04302004E Effective October 2010 Incoming Line Lugs Where the overcurrent protection for the MCC is at a remote location, the MCC feeder lines are connected to incoming line lugs attached to the bus bar distribution system . See Figure 20 . For highampere rated horizontal bus bar systems, the incoming line lugs are mounted on vertical risers that connect to the horizontal bus bars . See Figure 21 . Figure 20. Incoming Line Lug Connections 12 eaton Corporation www.eaton.com Freedom 2100 Motor Control Center Installation and Maintenance Manual Figure 21. Incoming Line Compartment, 2000A
Freedom 2100 Motor Control Center Installation and Maintenance Manual Short-circuit Bracing All incoming lines to either incoming line lugs or to main disconnects must be braced to withstand the mechanical forces created by a high fault current . With the remainder of a Freedom 2100 MCC rated for not less than 65,000A (rms symmetrical), the installing electrician needs to anchor the cables at the incoming line connections sufficiently and tighten the lugs correctly . Each incoming line compartment is equipped with two-piece sheet steel brackets that form a cable bracing support bracket that is approximately 9 inches from the conduit entry point, for both topand bottom-feed applications . Use the bracket and appropriate lashing material to tie the cables securely together if bundled or to hold apart when they are required to be separated . See Figure 22, which shows the two-part mounting/bracing bracket, in a top entry incoming lug configuration . Figure 22. Incoming Line Compartment Showing Two-Piece Support Bracket, with Opening for Cables Making Connection Instruction Booklet IM04302004E eaton Corporation www.eaton.com Effective October 2010 Caution all inCoMing line CoMpartMentS preSent an obviouS Hazard wHen tHe door iS opened or CoverS are reMoved witH power on. wHen working in tHiS area, tHe inCoMing feeder SHould be de-energized. Before beginning work on incoming line connections, refer to all drawings furnished by Eaton, as well as all applicable contract drawings for the particular installation . Depending on the location, size, and type of the incoming arrangement, remove one or more horizontal and vertical wireway doors, and selected units to provide complete access . See Part 9, page 22 for unit removal instructions . For top entry, the top cover plates are easily removed for drilling or punching operations . 13
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Freedom 2100 Motor Control Center Installation and - Eaton Canada

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