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Installing/Routing Cables
10.4
Installing Power Cables
a
Selecting Power Cables
Appearance
Configuration 1:
Configuration 2:
NOTE
The colors of power cables vary according to countries. The
colors of the positive and negative cables in China are red and
blue respectively. Unless otherwise specified in other areas,
Huawei uses the black-positive and blue-negative power
cables for delivery by default. Check the carrier's
requirements, and select power cables with proper colors for
installation. This document uses configuration 2 power cables
as an example.
PSU Power Cables
Input
Power Cable
Current (A)
Length (m)
63
125
NOTE
1. The customer EoS feeds power to the PSU from the rectifier cabinet of the equipment room. The total
length of cables from the rectifier cabinet to the PSU must be less than 80 m. It is recommended that the left-
side and right-side power cables of the power supply pool in the U32 enhanced subrack have the same
length. If the lengths of the power cables are different, ensure that the power cables meet the following
requirements:
•
When only 63 A power cables are used, the difference between the longest cable and the shortest cable
on both the left and right sides of the power supply pool must not exceed 10 m.
•
When 63 A and 125 A power cables are used together, the difference between the longest cable and the
shortest cable on both the left and right sides of the power supply pool must not exceed 5 m.
2. When an external power supply is used, pay attention to that the current of the PSU circuit breaker is 60 A
when the PSU is connected to the load.
Cabinet Power Cables
RTN (+)
RTN (+)
Cross-Sectional Area of
the Power Cable (mm² )
20 to 35
25 (LSZH)
35 to 45
35 (LSZH)
25
35 (LSZH)
Copper Fittings for Connecting
NEG (-)
NEG (-)
Copper fittings for the system
control and cross-connect board
One end of the power cable is equipped with
a JG two-hole bare crimp terminal to connect
to a PSU board on the U32 enhanced
subrack.
The other end is equipped with a one-hole OT
terminal to connect to a PDF.
59
PSU Boards
Copper fittings for the
service board area
(Short)
(Long)
area
(Short)
(Long)
Terminal Type
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