Digital Meters Testing

Testing Procedures

  • Calibrate the meter at different values.
Download: Meters Test Format

Equipment Required

  1. Injection Kit (Freja).
  2. ​Connection Cables (Banana Type). 
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FREJA 300
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Test Switch (ABB)
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Connection Cables

Meter Calibration Test

  • Connection will be same as the shown figure.
  • Adjust meter CT & VT ratio.     (Refer to meter manual)
  • Inject AC current with different values (25%, 50%, 75% & 100%).
  • Inject AC voltage with different values (25%, 50%, 75% & 100%).
  • Calculate the meter error accuracy at each value.
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Connection Circuit