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What is the accuracy of cosφ measurements in Varlogic NR6, NR12 and NRC regulators?

  1. VPL12N has an accuracy of 1% for cosφ measurement even though we claim 2% in the VPL12N User Guide.
  2. NR6/NR12/NR12C has an accuracy of 2% for cosφ measurement.
  3. PLease note that accuracy for both regulators is affected by the balance of the 3 phases. If there was imbalance, then the accuracy will be worse and the percentage will be higher.
  4. Please note that the above mentioned accuracies are for the controller only. If CTs were used, accuracy will eventually change.
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