Item
Specification
Note
If the PDF cannot provide 50 A circuit breakers and the full configuration is unnecessary,
you can select the circuit breaker of each DC line by using the following formula.
I = P / (Vin * D * 1)
I: indicates the rated current of the circuit breaker of each line on the PDF, in Ampere (A).
P: indicates the total power of each device.
Vin: indicates the input voltage of the power supply. (38 < Vin < 72)
D: indicates the derating coefficient. The recommended coefficient is 0.8.
1: indicates the number of the input lines of the power module.
shows the selection of power cables a and b.
Table 2-19
Cables for the PEMA
Distance from the PDF to
the Device
Selection of Power Cables a and b
Equal to or shorter than 15
m
Wire,450/750V,227 IEC
02(RV)16mm
2
,blue,85A
Each power module should
be equipped with one cable
of this type. The cable
length is determined by the
project survey on site.
Wire,450/750V,227 IEC
02(RV)16mm
2
,black,85A
Each power module should
be equipped with one cable
of this type. The cable
length is determined by the
project survey on site.
Naked Crimping
Terminal,JG2,16mm
2
,M6,95
A,Tin Plated,for OEM
Each cable should be
equipped with one terminal
of this type.
Naked Crimping
Terminal,OT,16mm
2
,M8,Tin
Plating,Naked Ring
Terminal
Each cable should be
equipped with one terminal
of this type.
Longer than 15 m and equal
to or shorter than 35 m
Wire,450/750V,227 IEC
02(RV)25mm
2
,blue,110A
Each power module should
be equipped with one cable
of this type. The cable
length is determined by the
project survey on site.
Wire,450/750V,227 IEC
02(RV)25mm
2
,black,110A
Each power module should
be equipped with one cable
of this type. The cable
length is determined by the
project survey on site.
HUAWEI USG9500 Series
Hardware Guide
2 Hardware Installation
Issue 03 (2017-12-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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