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Which Generator? Can't Decide? Generator and Watts Usage Guide Power Usage Calculator for the Industrial User

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Power Usage Calculator

Calculating Ampere (I), given kVA.

Phase
1, 2, 3		 Generator
kVA		 Volts
Required		 = Ampere
I

Converting kVA to kW

kVA = kW

Converting kW to kVA

kW = kVA

Converting kW to HP

kW = HP

What size genset is needed to start a 3 phase electric motor Direct on Line (DOL) start

HP of
Motor		 = Generator
kVA Required

Generator Size to Start Motors

You only need to fill in the columns coloured in red.

Fill in the HP of the motor(s) in their starting sequence, select the start method (Direct On Line or Star Delta) and press Evaluate.
The required generator size will then be displayed at the bottom.

3 Phase (415 volt @ 50Hz)
1 Phase (240 volt @ 50Hz)

Starting Sequence Motor HP Start Method
DOL / StarDelta		 Run Variable Phase Current Starting Value Total Run Current Total Start Current
1 /
2 /
3 /
4 /
5 /
6 /

Generator Size for Starting with: kVA*
Generator Size for Running with: kVA*
Generator Size Recommended: kVA*

* Please NOTE the above calculations are an estimate only because other factors such as site conditions, motor efficiencies and iron losses are not taken into consideration.

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