Huawei UA5000 - Internal of the SPD27 SZ Surge Protector; Working and Alarm Principles of the SPD27 SZ Surge Protector

Figure 10-8 Internal of the SPD27SZ surge protector
Principles
Figure 10-9 describes the working and alarm principles of the SPD27SZ surge protector.
Figure 10-9 Working and alarm principles of the SPD27SZ surge protector
Cables
Lin
Nin
Nout
Lout
PE
Breaker
SPD
Failure alarm
circuit
First-level
protection
circuit
Decouplin
g circuit
Second-level
protection
circuit
Lin
Nin
Diesel
input
Mains
input
SPD failure
monitoring port
Power cable
PE cable
Control cable
Signal cable
UA5000 Universal Access Unit
Environment Monitoring 10 Sensors
Issue 01 (2012-08-17) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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