Liebert 3000, 4000, 6000 A, 1500 user manual AC Junction Box, Overall Power System Specifications

3.10AC Junction Box

The AC junction box is required as an AC connection interface in rectifier cabinets where the Helios Rectifier 200E/48 is used.

Figure 25 Front view of the AC junction box (with the front panel open)

Six receptacles to plug the

cables from the rectifiers

RECT 6				RECT 5				RECT 4		RECT 3				RECT 2				RECT 1
1	2	3	4	5	6	7	8	9	10 11 12	1	2	3	4	5	6	7	8	9	10 11 12
					TB1										TB2
L1	L2	L3	GRD L1		L2	L3	GRD	L1	L2 L3 GRD	L1	L2	L3	GRD L1		L2	L3	GRD	L1	L2 L3 GRD

3.10.1 Mechanical Specifications

The junction box is made of zinc plated steel and can accommodate up to six one-inch rigid or flex- ible conduits. The mechanical specifications are listed in Table 29.

Table 29 Mechanical specifications of the AC junction box

Figure	Height	Depth	Width
Figure 25	264 mm	284 mm	521 mm
	(10.4 in.)	(11.2 in.)	(20.5 in.)

3.10.2 Electrical Specifications

The junction box is designed to accommodate six 3-phase circuits (3 wires plus ground) at a maxi- mum voltage of 600 V AC and a capacity of 30 A per circuit.

3.11Overall Power System Specifications

3.11.1Standards

The Helios DC System 4000/48 meets the following North American and European standards:

•UL-1801

•CSA 22.2 (#0.7, #225)

•TR-TSY-000406

•CE

•VDE

3.11.2Mechanical Specifications of Fully Equipped Power Cabinets

Table 30 Mechanical specifications of fully equipped power cabinets

Height	Depth	Width	Total weight (4000 A control	Total weight (1200 A rectifier
			and distribution cabinet)	cabinet with six rectifiers)
2134 mm	600 mm	600 mm	363 kg	440 kg
(84 in.)	(23.62 in.)	(23.62 in.)	(800 lb) approx.	(970 lb) approx.

26 Specifications