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CLNA - AC UF fast err & AC OF fast err Service Alarm Code: 2401 & 2402

  • Criterion:
Grid frequency is below ( Under Freq ) or above ( Over Freq ) the set limits . The fall for UF ar the rise for OF was rapid .
  • Possible cause :
 - grid frequency is not according the set ( country or custom setting)
  • Action :
- Measure the grid frequency and check if it is within  the country or custom setting limits , adjust if necessary in accordance with utility
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