Electric Load Calculation

Ujjval Mody · #1 Dec 14, 2007, 09:25 PM

I have a Unit working at 6.5 Amps, 3 phase. I want to calculate the Power Consumption of the Unit. If I can get the formula by which the same is calculated.

The Formula is the most important.

I would be grateful, for a very quick reply.

Regards

Ujjval.

donf · Dec 15, 2007, 02:11 AM

What type of device is being used?

tkrussell · Dec 15, 2007, 05:20 AM

When you say power, there are two types, true, and apparent.

Which is that you are looking for?

Credendovidis · Mar 27, 2008, 04:31 AM

The power in a three-phase system is measured in volt-amps. The formula used to calculate the power involved is:
.
Volt-amps = Sq. root of 3 x voltage (volts) x current (amperes)
.
Assuming you use 3 phase 110 Volts :
.
VA = root of 110 x 110 x 110 x 6.5 = root of 8651500 = 2941 VA

Apr 3, 2008, 03:28 AM

That is the wackiest explanation of a this formula I have ever seen.

VA= SqRt of 3 * volts * amps

VA = 1.73 * 110 * 6.5

VA = 1236.95

For this example.

Althou, 110 volt 3 phase is very rare.

Qmqm · Apr 12, 2008, 12:25 AM

Difference between single phase & 3 phase cable



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