Does the M-2001 Tapchanger Control Series comply with existing Industry Standards?

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Does the M-2001 Tapchanger Control Series comply with existing Industry Standards?

Yes, all versions of the M-2001 series of controls comply with applicable IEC and IEEE Standards. Most notably, the control complies with the ANSI/IEEE C57.15.9-2009 for Control Standard Requirements, Terminology, and Test Code for step-voltage regulators.

  • The Voltage Measurement Accuracy referenced in the above standard requires that the control shall accurately measure AC voltage within +0.3% over a temperature range of -30 degrees to +65 degrees Celsius. We further state that our control is accurate to within +0.5% over its entire temperature operating range of -40 degrees to +85 degrees Celsius.
  • There is no similar Current Measurement Accuracy specified by the referenced Standard. This is likely due to the fact that a high accuracy resistive standard is usually required for such measurements. The accuracy of most utility grade current transformers is between 1% and 3%, depending on their class rating and intended use.
  • Accuracy standards are not given for setting values entered into the control by the referenced Standard. Typically the settings are digital values against which the measured value is compared. As such, the largest source of error is likely the measured value.