Replacing The Spd In A Pdc - Huawei FusionModule1000A40 ICT Solution Maintenance Manual

FusionModule1000A40 ICT Solution
Maintenance Guide

4.1.8.4 Replacing the SPD in a PDC

Prerequisites
Do not replace an SPD during a thunderstorm.
A spare SPD of the same model is available and functional.
Impact on the System
None
Preparations
Tools: Phillips screwdriver, flat-head screwdriver, electroprobe
Material: spare SPD
Documents: PDC user manual
Skill requirement: electrician's work permit
Procedure
Step 1 Remove the protective panel of the SPD.
Avoid touching any charged body when removing the panel.
Step 2 Switch off the SPD circuit breaker.
Step 3 Detect the L1, L2, L3, and N voltages to the PE using an electrical tester pen, and verify that
the faulty SPD has no voltage before replacing the faulty SPD. Figure 4-6 shows how to
detect the voltages.
Issue 01 (2019-03-05) Copyright © Huawei Technologies Co., Ltd.
4 Parts Replacement
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