American Power Conversion 400kW1MW installation manual Connecting terminal blocks to batteries

Rack Assembly

4.Using one (1) 120 mm2 [#4/0] cable, connect the appropriate (top or bottom) BAT 2- terminal in Terminal Block #2 to the BAT 2- terminal in Battery Breaker #2.

At Terminal Block #2: If using top cable entry, connect to top terminal (as shown) of the BAT 2- segment on right. Otherwise, connect to bottom terminal. Secure lug to stud with preset washer and nut. To relieve strain, zip tie cable to the shelf directly above the terminal block.

To Battery Breaker #2 (BAT 2- terminal)

+-

Terminal Block #2

At Battery Breaker #2: Refer to the battery breaker’s wiring diagram for the proper BAT 2- lug landing on the other end of this cable.

Connecting terminal blocks to batteries

To minimize risk, connections between terminal blocks and batteries should be made FROM the terminal blocks TO the batteries. 120 mm2 [#4/0] cable is supplied for all connections specified in this section. Each terminal block assembly contains preset hardware for securing cable lugs.

Warning

Note

Review “Safety” on page 1 for safety warnings and caution notices. Take heed of all safety information before proceeding with battery connections. Failure to comply could result in serious injury or death!

Prior to making connections, use a voltmeter to measure collective voltage of the BAT 1 (#1-32) and BAT 2 (#33-64) strings. Readings should approximate the number of batteries in each string times 12V (or about 386V per string).

28 Battery Rack Assembly and Installation Manual