SmartACU2000B smart array controller
User Manual (with PID modules, 800 V AC)
6 System Commissioning
Issue 05 (2019-01-20)
Copyright © Huawei Technologies Co., Ltd.
85
Figure 6-3
Removing reserved floating nuts
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6.4 Powering Off the System
Prerequisites
You have put on insulation gloves.
Procedure
Step 1
Turn off the single-phase power switch that controls the power supply from the remote
box-type transformer to the smart array controller.
Step 2
Turn off the three-phase power switch that controls the power supply from the remote
box-type transformer to the smart array controller.
If the smart array controller houses one PID module, turn off the appropriate three-phase
power switch.
If the smart array controller houses two PID modules, turn off the appropriate two
three-phase power switches.
Step 3
Turn off the DC input and output switches on the smart array controller.
If the smart array controller does not support 24 V DC input or output, skip this step.