Replacing A Circuit Breaker - Huawei ETP4860-B1A2 User Manual

ETP4860-B1A2 Embedded Power
User Manual
Step 8 Connect the signal cable terminals and COM communications cables to the panel
of the new SMU based on the recorded information.
Step 9 Disconnect the ground cable of the ESD wrist strap, and remove the ESD wrist
strap and ESD gloves.
----End
Follow-up Procedure
Pack the removed component and send it to the local Huawei warehouse.

7.5.4 Replacing a Circuit Breaker

Prerequisites
The new circuit breaker is intact.
● Before replacing a circuit breaker, switch the circuit breaker to OFF. Do not
● Power-off will disconnect the power supply to loads. Obtain prior consent from
Procedure
Step 1 Switch off the circuit breaker to be replaced.
Step 2 Record the connection positions of cables, remove the cables, and insulate them.
Step 3 Remove the faulty circuit breaker.
Figure 7-20 Removing a circuit breaker
Step 4 Install the new circuit breaker.
Step 5 Connect cables to the circuit breaker based on the recorded cable information.
Step 6 Switch on the circuit breaker.
----End
Issue 04 (2021-01-05)
NO TICE
operate with power on.
customers before replacing a circuit breaker.
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