Replacing An Spd - Huawei New Main Way 2.0 User Manual

New Main Way 2.0
User Manual
Step 13 Check that the power supply and distribution of the system are normal.
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8.3 Replacing an SPD

Prerequisites
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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 8-7 Removing the protective covers
Step 4 Remove the protective cover.
Step 5 Loosen the buckle on the base and remove the SPD.
Figure 8-8 Loosening the buckle
Step 6 Install a new SPD, and connect the signal cable and power cable to the SPD.
Issue 05 (2020-10-15)
Tools: PDF door key, step ladder, Phillips screwdriver, flat-head screwdriver,
multimeter
Material: a new SPD of the same model
Before the replacement, ensure that the load services are not affected or
obtain written consent from the customer.
Copyright © Huawei Technologies Co., Ltd.
8 Parts Replacement
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