12
2
Installing Power Cables: DC Power Distribution Box
Setup of the equipment room power supply determines whether installation of a short-circuit copper bar is
required. If the equipment room has four power inputs greater than or equal to 63 A, no short-circuit
copper bar is needed. If the equipment room has two power inputs greater than or equal to 125 A, one is
needed.
Power output area
Power switch area
Power input area
A B
X
Y Z
• (Optional) Installing the short-circuit copper bar
63 A
a
c
125 A (If the equipment room provides two 125 A inputs, install short-circuit copper bars on the
two groups of 63 A terminals in the Input A and Input B sections.)
Black
Blue
Short-circuit copper bar
M6 single-
hole terminal
Y
a b b a
Z
a b b a
X
a b b a a b b a
c c
Power output area
Power switch area
b
32 A (reserved for changing the capacity of circuit breakers)
If a short-circuit copper bar is used, the 125 A power cable must meet the following requirements:
Cross-sectional area: 35 mm
2
Length: 25 m
OT terminal: M6 one-hole OT terminal with a width of less than 15.5 mm
If no short-circuit copper bar is used, a power cable with a cross-sectional area of 25 mm
2
or 16 mm
2
should be
assembled with an M6 two-hole OT terminal.
M6 screws
50±5 Kgf.cm
M6
CAUTION
NOTE
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