Maintenance And Replacement - Huawei STS-3000K-H1 Installation Manual

STS-(3000K, 6000K)-H1 Smart Transformer Station
(Spain, Eiffage Turroneros)
Installation Guide

1.7 Maintenance and Replacement

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Issue 02 (2020-02-21)
After the equipment stops running, wait for at least 10 minutes to ensure that the voltage is
within the safe range, the transfer switch is in the local position, the ground switch of the
circuit breaker cabinet in the ring main unit is switched on, and the ground cable is
connected to the low-voltage cabinet. Then you can perform maintenance or repair.
Before maintaining the transformer station, turn off the switches on the LV side and then
the high-voltage (HV) side of the STS.
Before maintaining the transformer station, turn off the ACB at the LV side and the switch
at the HV side, and attach warning labels to ensure that the equipment will not be powered
on by accident.
Maintain the equipment with sufficient knowledge of this document and using proper
tools and testing equipment.
Prior to maintenance, power off the equipment.
Place temporary warning signs or erect fences to prevent unauthorized access to the
maintenance site.
If the equipment is faulty, contact your dealer.
The equipment can be powered on only after all faults are rectified. Failing to do so may
escalate faults or damage the equipment.
Copyright © Huawei Technologies Co., Ltd.
1 Safety Precautions
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