Power Factor Correction

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Paras Patel

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Paras Patel

POWER FACTOR IMPROVEMENT 80kVA

The present average power factor = 0.86

The present Recorded Maximum Demand = 80KVA

Therefore the average max. load = 80x0.86 =69KW

Recommended PF = 1.00

RMD at improved PF = 69/1.00 =69KVA

Reduction in KVA = 80-69 =11.2KVA

Annual Saving due to reduction in RMD = 11x$30 x 12 =$3,000

Additional KVAr requirement = KW x (Tan f1-Tan f2)

= 69(0.593-0.000)

= 41KVAr

POWER FACTOR IMPROVEMENT 50kVA

The present average power factor = 0.86

The present Recorded Maximum Demand = 50KVA

Therefore the average max. load = 50x0.86 = 43KW

Recommended PF = 1.00

RMD at improved PF = 43/1.00 = 43KVA

Reduction in KVA = 50-43 = 7.0KVA

Annual Saving due to reduction in RMD = 7x$30 x 12 = $2,000

Additional KVAr requirement = KW x (Tan f1-Tan f2)

= 43x(0.593-0.000)

= 26KVAr

Happy!! thank you verry much

Where do you come up with the angles f1 and f2.

I know they are the angle of the power factor but how does that relate to the power factor of .86?

I assume a power factor of 1.00 has an angle of zero?

a Power facotor of .50 would be ????

Use your calculator or look up tables to find the Cosine of 0.5!