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STS-(3000K, 6000K)-H1 Smart Transformer Station Installation Guide
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Maintenance and Replacement

Maintenance and Replacement

  • 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.
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Updated: 2019-12-05

Document ID: EDOC1100115701

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