Liebert 600TTM installation manual Wiring Inspection, Power Wiring Terminals Factory Supplied

10.0WIRING INSPECTION

1.Verify all power connections are tight.

2.Verify all control wire terminations are tight.

3.Verify all power wires and connections have proper spacing between exposed surfaces, phase- to-phase and phase-to-ground.

4.Verify that all control wires are run in individual, separate, steel conduit.

Table 1	Power Wiring Terminals - Factory Supplied
UPS Module Rating		Connection Type
500 kVA, 6-Pulse Rectifier		All power connections are top or bottom cable entry to busbars on the right
		side of module.
500 kVA, 12-Pulse		Busbars for DC input, AC output, Neutral and Ground are provided on the
Rectifier		right side of module, with top or bottom cable entry. Rectifier input is top entry
		directly to lugs on top of input circuit breaker.
625-750 kVA, standard		Busbars for AC output, Neutral and Ground are provided on the right side of
models with standard input		module, with top or bottom cable entry. Rectifier input is top entry directly to
		lugs on top of input circuit breaker. DC input is top entry to bus bars.
750 kVA/675 kW and other		Busbars for AC output, Neutral and Ground are provided on the right side of
modules with optional		module, with top or bottom cable entry. Rectifier input and DC input are top
input busbar kit		entry to bus bars.

Use 75°C copper wire. Select wire size based on the ampacities in Table 310-16(see Table 3 of this manual) and associated notes of the National Electrical Code (NFPA 70).

Use commercially available solderless lugs for the wire size required for your application. Connect wire to the lug using tool and procedure specified by the lug manufacturer.

Table 2	Torque Specifications
Nut and Bolt Combinations
			Grade 2			Electrical Connections
		Standard				with Belleville Washers
	Bolt Shaft Size	Lb-in			N-m	Lb-in	N-m
	1/4	53			6.0	46	5.2
	5/16	107			12	60	6.8
	3/8	192			22	95	11
	1/2	428			48	256	29
Circuit Breakers With Compression Lugs (For Power Wiring)
Cable Size or Range		Lb-in			N-m
	#6 - #4	100			11
	#3 - #1	125			14
	1/0 - 2/0	150			17
	3/0 - 200 MCM	200			23
	250 - 400 MCM	250			28
	500 - 700 MCM	300			34
Terminal Block Compression Lugs (For Control Wiring)
AWG Wire Size or Range		Lb-in			N-m
	#22 - #14	3.5 to 5.3		0.4 to 0.6

Use the values in this table unless the equipment is labeled with a different torque value.

Wiring Inspection 27