APC 6000 installation manual Connection of power circuits, General, Cross-section AA

Installation (cont.)

Connection of power circuits

Before making connections, check that switches Q1, Q4S, Q3BP and Q5N are in the "open" position (toggle opposite the "O" mark).

General:

◗in the case of parallel-connected rectifier-inverter cubicles with SSC, switches Q4S and Q3BP are not included and mains 2 is connected to the Static Switch Cubicle. The other connections are the same;

◗for modular UPSs with an external maintenance bypass, switch Q3BP must be locked open;

◗the power cables for the connections between cubicles are not supplied;

◗open the doors and remove the lower terminal shields (secured by screws to the cubicle chassis) of the rectifier-inverter and Static Switch Cubicles;

◗connect the cables shown in heavy lines in the wiring diagrams shown previously to the terminals specified in the figures below;

◗each cubicle must be earthed;

◗the routing of the power cables is shown in the figures;

◗the auxiliary wiring is routed in troughs located nearby (not shown in the drawings);

◗outside the cubicles, separate the auxiliary wiring from the power cables;

◗all the cubicles must be interconnected for earthing, forming a mesh which is itself connected to the building structure and earthing electrode;

◗the connection drawings hereafter show the cubicles with doors open and terminal shields removed.

250kVA to 450kVA single-unit UPS rectifier-inverter cubicle

cross-section AA front view

front

air extraction

rear

air admission

mains 1, mains 2, load

battery

air admission

450kVA	450kVA
									A
		rectifier		inverter		inverter			inverter
		charger		stack		stack			stack
card		card	XR1	XR8
				XR9
cage
		cage
			XR2
				XR5
	XM136	ACOZ board	XR3	XR6
	XM137			XR7
			XR4
						static
		remote relay		FHCZ		switch
		board		board
		additional remote relay board
		(optional)			Q4S	Q3BP			Q5N
		Q1
transformer		on		off	on	off	on	off	on
		off
		L1 L2 L3				N L1 L2 L3		N L1 L2 L3
		mains 1	L+	L		mains 2			load
			battery
cable tie bar
connection						cable			A
from below									spacing
		spacing				tie bar
trough (if applicable)		uprights							uprights
				power cable routing
				via the bottom

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