electricpy.fault.protectiontap

electricpy.fault.protectiontap(S, CTR=1, VLN=None, VLL=None)[source]

Protection TAP Setting Calculator.

Evaluates the required TAP setting based on the rated power of a transformer (the object being protected) and the voltage (either primary or secondary) in conjunction with the CTR (current transformer ratio) for the side in question (primary/ secondary).

Parameters:

  • CTR (float) – The Current Transformer Ratio.

  • S (float) – Rated apparent power magnitude (VA/VAR/W).

  • VLN (float, exclusive) – Line-to-Neutral voltage in volts.

  • VLL (float, exclusive) – Line-to-Line voltage in volts.

Returns:

TAP – The TAP setting required to meet the specifications.

Return type:

float