SmartACU2000B smart array controller
User Manual (with PID modules, 800 V AC)
7 System Maintenance
Issue 05 (2019-01-20)
Copyright © Huawei Technologies Co., Ltd.
91
Step 4
Push the buckle downwards and remove the faulty three-phase input switch.
Figure 7-3
Removing a faulty three-phase input switch
Step 5
Remove the protective cover from the wiring terminals on the new three-phase input switch.
Step 6
Remove the wiring nuts from both sides at the bottom of the new three-phase input switch.
Step 7
Install the new three-phase input switch.
Step 8
Reinstall the wiring nuts on both sides at the bottom.
Step 9
Connect the cables to the new three-phase input switch based on the cable labels.
Step 10
Reinstall the protective cover on the wiring terminals.
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7.3.3 Replacing the Three-Phase Input Switch (Knife Fuse Switch)
Prerequisites
The three-phase input switch is faulty.
A spare three-phase input switch of the same model is available and functional.