Tuesday, April 28, 2009

Bulk Power Factor Correction

The Power factor of the total current supplied to the distribution board is monitored by a controller which then switches capacitor banks In a fashion to maintain a power factor better than a preset limit. (Typically 0.95) Ideally, the power factor should be as close to unity as possible. There is no problem with bulk correction operating at unity or even over corrected.

The power factor correction required can be calculated from either a known power factor, load and required power factor, or from known KVA and KW of the load.

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