Replacing An Spd Circuit Breaker - Huawei New Main Way 2.0 User Manual

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New Main Way 2.0

User Manual

Step 7 Reinstall the protective cover, communications cable, and DC power cable for the

general input unit.

Step 8 Turn on the SPD circuit breaker, upstream power distribution switch, and input

switch of the general input unit.

Step 9 Check that the power supply and distribution of the system are normal.

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8.4 Replacing an SPD Circuit Breaker

Prerequisites

●

Procedure

Step 1 Turn off the input switch, SPD circuit breaker, and upstream power distribution

switch of the general input unit, and make a warning sign.

Step 2 Remove the communications cable and the DC power cable and mark the

installation positions.

Step 3 Remove the protective covers and use a multimeter to check that the input

terminal is not energized.

Figure 8-9 Removing the protective covers

Step 4 Remove cables from the SPD circuit breaker and mark the installation positions.

Step 5 Loosen the buckle on the circuit breaker base, and remove the circuit breaker and

auxiliary contact.

Issue 05 (2020-10-15)

Tools: PDF door key, step ladder, Phillips screwdriver, flat-head screwdriver,

multimeter

Material: a new circuit breaker of the same model

Before the replacement, ensure that the load services are not affected or

obtain written consent from the customer.

8 Parts Replacement

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