Equipment For Dc Power Supply Unit - Hitachi GR4000 Series Installation Manual

GR4000 Installation Guide Version 1.00 - Preliminary
(4) Dual power supply system
With the redundancy of a power supply unit, you can have a dual power supply system
by providing the electricity to each power supply unit from different power sources.

2.4.2 Equipment for DC Power Supply Unit

(1) DC-48V/ DC-60V Power Cable
All power connection wiring should conform to the rules and regulations in the National
Electrical Code (NEC) as well as any local codes.
The diameter of a DC cable to be used differs depending on the type of a power supply
unit.
Use the following rated cables for POW-HSDCE(DC80001-U) and POW-
MSDCE(DC160001-U). (For the detail specifications of the cables to be used for each
GR4000 model, see Table 2.4-5.)
1) POW-HSDCE(DC80001-U) ：AWG8
2) POW-MSDCE(DC160001-U)：AWG6
The DC power cords should terminate with the cable terminals on the side of power
supply shelves.
The cable terminals used for POW-HSDCE(DC80001-U) and POW-MSDCE(DC160001-
U) are allowed to have only one hole and should meet the following specifications.
1) POW-HSDCE(DC80001-U) ：M5 terminal，rated -48VDC/21A or -60VDC/17A, UL
product. For its shape, see Figure 2.4-2.
2) POW-MSDCE(DC160001-U)：M6 terminal，rated -48VDC/42A or -60VDC/34A, UL
product. For its shape, see Figure 2.4-2.
Consider the distance from a cable clamper to a terminal board when preparing the DC
power cable. The form of a terminal board on the power supply unit is shown in Figure
2.4-3.
Table 2.4-5 Specifications of DC power cables
Model
GR4000-80E2
GR4000-160E2
GR4000-320E
DC cable terminal for GR4000-80E2
12.4 Max.
15 Min.
Figure 2.4-2 Dimensions of DC power terminals
68
Cable spec.
Number of core wires
3 core wires twisted together
φ5.2～5.6
Insulating sheath
WARNING: WHEN USING A DC POWER CABLE, ATTACH AN INSULATING SHEATH AT
THE CABLE TERMINAL. USING AN UNSHEATHED DC POWER CABLE COULD
CAUSES AN ELECTRIC SHOCK.
AWG No.
8
6
DC cable terminal for GR4000-160E2/GR4000-320E
12.4 Max.
15 Min.
Outer diameter of cables
φ23mm or less
φ27mm or less
φ6.3～6.9
Insulating sheath
Unit：mm
520-10-014-20X