Total Power Calculation

This web page can be used to calculate the total power (kva) of a single phase or three phase load.  Use Table one for three phase calculations, and use Table two for single phase calculations. The three phase load calculations assume the load is balanced.

Table 1 - Calculation of Total Power Three Phase Loads

Known Variables: Voltage, Current  




Input System Line-Line Voltage (kv)
Input line current (amps)
Calculated Total Power (kva)

Known Variables: Real Power, Reactive Power  


Input Three Phase Power  (kW)
Input Three Phase Reactive Power (kvar)
Calculated Total Power (kva)

Table 2 - Calculation of Total Power Single Phase Loads 

Known Variables: Voltage, Current



Input System Line to Neutral Voltage (kv)
Input Line Current (amps)
Calculated Total power (kva)

Northeast Power Systems, Inc.
66 Carey Road
Queensbury, New York 12804
Phone: 518-792-4776
Fax: 518-792-5767

E-mail: sales@nepsi.com
Website: www.nepsi.com