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HUAWEI USG9500 Series
Hardware Guide
Item
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.
Table 2-19
Table 2-19 Cables for the PEMA
Distance from the PDF to
the Device
Equal to or shorter than 15
m
Longer than 15 m and equal
to or shorter than 35 m
Issue 03 (2017-12-15)
Specification
shows the selection of power cables a and b.
Selection of Power Cables a and b
Wire,450/750V,227 IEC
02(RV)16mm
Wire,450/750V,227 IEC
02(RV)16mm
Naked Crimping
Terminal,JG2,16mm
A,Tin Plated,for OEM
Naked Crimping
Terminal,OT,16mm
Plating,Naked Ring
Terminal
Wire,450/750V,227 IEC
02(RV)25mm
Wire,450/750V,227 IEC
02(RV)25mm
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Note
Each power module should
be equipped with one cable
2
,blue,85A
of this type. The cable
length is determined by the
project survey on site.
Each power module should
be equipped with one cable
2
,black,85A
of this type. The cable
length is determined by the
project survey on site.
Each cable should be
equipped with one terminal
2
,M6,95
of this type.
Each cable should be
2
equipped with one terminal
,M8,Tin
of this type.
Each power module should
be equipped with one cable
2
,blue,110A
of this type. The cable
length is determined by the
project survey on site.
Each power module should
be equipped with one cable
2
,black,110A
of this type. The cable
length is determined by the
project survey on site.
2 Hardware Installation
332
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