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TP48200A-DT19D1 Telecom Power User Manual

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AC Under Volt

AC Under Volt

Possible Causes

  • The AC undervoltage alarm threshold is incorrectly set on the SMU.
  • The power grid is faulty.


  1. Check whether the AC undervoltage alarm threshold is correctly set. If not, set the threshold to the correct value.
  2. Check whether the AC input voltage is below the AC undervoltage alarm threshold (180 V AC by default). If so, handle the AC input fault.
Updated: 2019-11-27

Document ID: EDOC1000078784

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