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26 Specifications
3.10 AC 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)
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.
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.
3.11 Overall Power System Specifications
3.11.1 Standards
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
3.11.2 Mechanical Specifications of Fully Equipped Power Cabinets
Table 29 Mechanical specifications of the AC junction box
Figure Height Depth Width
Figure 25
264 mm
(10.4 in.)
284 mm
(11.2 in.)
521 mm
(20.5 in.)
Table 30 Mechanical specifications of fully equipped power cabinets
Height Depth Width
Total weight (4000 A control
and distribution cabinet)
Total weight (1200 A rectifier
cabinet with six rectifiers)
2134 mm
(84 in.)
600 mm
(23.62 in.)
600 mm
(23.62 in.)
363 kg
(800 lb) approx.
440 kg
(970 lb) approx.
Six receptacles
to plug the
cables from the rectifiers
L1
L2
L3
RECT 6
GRD
L1
L2
L3
RECT 5
GRD
L1
L2
L3
RECT 4
GRD
L1
L2
L3
RECT 3
GRD
L1
L2
L3
RECT 2
GRD
L1
L2
L3
RECT 1
GRD
TB1
TB2
1 2 3 4 5 6 7 8 9 10 11 12
1 2 3 4 5 6 7 8 9 10 11 12