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New Member
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Dec 14, 2007, 11:25 PM
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Electric Load Calculation
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.
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Printers & Electronics Expert
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Dec 15, 2007, 04:11 AM
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What type of device is being used?
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Uber Member
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Dec 15, 2007, 07:20 AM
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When you say power, there are two types, true, and apparent.
Which is that you are looking for?
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Mar 27, 2008, 05:31 AM
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The power in a three-phase system is measured in volt-amps. The formula used to calculate the power involved is:
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Volt-amps = Sq. root of 3 x voltage (volts) x current (amperes)
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Assuming you use 3 phase 110 Volts :
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VA = root of 110 x 110 x 110 x 6.5 = root of 8651500 = 2941 VA
;)
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Guest
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Apr 3, 2008, 04:28 AM
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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.
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New Member
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Apr 12, 2008, 01:25 AM
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Difference between single phase & 3 phase cable
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New Member
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Jan 24, 2011, 09:29 AM
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what type of load resistive or capacitive or inductive to know the power factory
which know as pf ( cosine the angle between phase current and phase voltage = cos fi)
the load is divided into two parts
1- active so, power = 3*current*phase voltage*cos fi P
2- inactive so, power = 3*current*phase voltage*sin fi S
overall power Q = Sq. root of( P^2+S^2)
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