Answer / jignesh

mainly used to improve power factor to reduce elctricity coast

Answer / manjunadh

apfc means automatic power factor control.....it is used to improve the power factor it is a relay

Answer / k.prakashchandra

It maintains the set pf

Answer / rohitashsaini

Apfc full form is automatatic power factor control.in this way we use a control relay that we know apfc relay.such company provide this as neptune,bch,shreem,
c&S,trinty,epcos,syntron,sycon.this is work automatically when power factor is low set point.its reduce kva and reduced demand .formula is kwh/kvah.its reduce magnetic losses of systems that motor p.f is 0.8.and when u maintained p.f 0.95 to1.00 than utility pay u incentive.if u maintained 0.99 p.fthan electricity reduce 4% of ur total bill.

Answer / nizam

Automatic power factor correction is used to improve power factor, number of capacitor is connected through relay when pf is low then relay is pickup and connect the capacitor.

Answer / dhamsa prashanth

apfc fulform automatic power factor correction.it is used to improve the power factor then the lossess wil be less and also reduce the electricity cost.in the system have one relay used these the advaantages above these ans

Answer / praveen panghate

APFC stands for Automatic Power Factor Controller.
This controller continuously monitors power factor of power system and maintains desired power factor as set in controller by switching ON or OFF capacitors connected across the output contacts of this controller.

One of our gas turbine generator unit "1st stage rotor ground fault" alarm was occured several times. we tried to measure some voltage vulue ground fault protection relay (UNS3020a made by ABB and we measured the value of: Ground: 0.9VDC 5V: 5.8VDC 24V: 23VDC u+: 300 – 350mVAC Rf1: 17.5mVAC Rf2: 17.6mVAC The unit still running and the alarm was reset. As of 6pm yesterday and unitl now no alarm happened again. I our protection relay was defective?

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