The Accu-CT® current transformers are available with a certificate of calibration when ordered with Option C0.6 or Option C0.3 (ACTL-1250 models only). The calibration is performed with equipment traceable to national standards administered by U.S. NIST and/or Euromet members (U.K. NPL, etc.).

  • For the Option C0.6 models, the certificate shows compliance with IEEE C57.13 accuracy class 0.6 and with IEC 60044-1 accuracy class 0.5 and class 0.5 S.
  • For the Option C0.3 models, the certificate shows compliance with IEEE C57.13 accuracy class 0.3 and with IEC 60044-1 accuracy class 0.5 and class 0.5 S.

Sample

Information

The certificate of calibration provides the following information:

  • Model
  • Serial Number
  • Rated Primary Current
  • Manufacture and Calibration Dates
  • Calibration Due Date
  • Traceable Test Equipment
  • Calibration Conditions
  • Test Points:
    • Percent of Rated Current (120%, 100%, 90%, 75%, 50%, 30%, 20%, 15%, 10%, 5%, 3%, 1.5%, 1%).
      Note, not all models include a test at 120% of rated current.
    • Test Current (Amps)
    • Accuracy Limit (Percent)
    • Measured Accuracy (Percent)
    • Phase Limit (Degrees)
    • Measured Phase (Degrees)
    • TCF Limit
    • Measured TCF
    • Result (Pass/Fail)

See Also