TP48200A-HT19C3 and TP48200A-HT19C4 Telecom
Power
User Manual
4 Maintenance
Issue 03 (2019-11-15)
Copyright © Huawei Technologies Co., Ltd.
59
Figure 4-5
Replacing an AC SPD
Step 4
Disconnect the ground cable for the ESD wrist strap, and remove the ESD wrist strap and
gloves.
----End
Follow-up Procedure
Check that the alarm for the AC SPD is cleared.
4.4.4 Replacing a Circuit Breaker
Prerequisites
Before replacing an AC circuit breaker, switch off the upstream input circuit breaker.
The cabinet door key, insulation tape, and required tools are available.
The new circuit breaker is intact and has the same specifications as the circuit breaker to
be replaced.
Procedure
Step 1
Switch off the circuit breaker that is to be replaced.
Step 2
Record the positions where the output cable and signal cable terminals connect to the circuit
breaker.
Step 3
Loosen the screw that secures the upper port of the circuit breaker using a Phillips screwdriver,
and remove the output power cable and signal cable terminals. Wrap the cable and terminals
using insulation tape.
Step 4
Loosen the screw that secures the lower port of the circuit breaker using a Phillips screwdriver,
and open the buckle at the base of the circuit breaker using an insulated flat-head screwdriver.