FusionModule800 Smart Small Data Center
Maintenance Guide
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Figure 5-4 Removing the protective panel
Step 3 Detect the L1, L2, L3, and N voltages to the PE using an electrical tester pen to check whether
there is voltage, as shown in Figure 5-5, and verify that the faulty SPD has no voltage before
replacing the faulty surge protection module.
Figure 5-5 Detecting voltages
Step 4 Hold the faulty surge protection module and pull it out, as shown in Figure 5-6.
During replacement, do not touch the electriferous components in the power distribution
subrack.