● Tools: electrical tester pen, key to the PDC cabinet door, Phillips screwdriver,
at-head screwdriver
● Materials: new SPD module
Procedure
Step 1 Remove the protective panel of the SPD.
Take appropriate insulation measures to avoid electric shocks when removing the
panel.
Step 2 Switch o 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
8-2 shows how to detect the voltages.
Figure 8-2 Detecting the voltages
Step 4 Use a at-head screwdriver to lever the faulty SPD out.
Step 5 Install a new SPD module.
Figure 8-3 Replacing an SPD Module
PDU8000 Modular Precision PDC V2.0
User Manual 8 Maintenance Guide
Issue 04 (2021-04-13) Copyright © Huawei Technologies Co., Ltd. 122
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