Load Bank Derating Tool

A load bank's kW capacity is dependent upon the applied operating voltage. Some load banks can be operated at a lower-than-rated voltage, however, the output kW is reduced. The below derating tool calculates the reduced kW capacity of a load bank when a lower-than-rated voltage is applied. To use the tool, enter the nameplate kW, voltage and frequency of the load bank and the reduced (actual) voltage and frequency applied. Columns in bold are the calculated results.

Ratings of Resistive Load Bank
KW Volts PF Phase Hertz Amps
1.0 3 1203

De-Rated Capacity of Resistive Load Bank
KW Volts PF Phase Hertz Amps
694 1.0 3 1002

Ratings of Resistive Inductive Load Bank
KW KVAr Volts PF Phase Hertz Resistive Amps Inductive Amps System Amps System KVA
1000 750 480 0.8 3 60 1203 902 1504 1250

De-Rated Capacity of Resistive Inductive Load Bank
KW KVAr Volts PF Phase Hertz Resistive Amps Inductive Amps System Amps System KVA
694 625 400 0.74 3 50 1002 902 1349 934