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Sepam - HV/MV Protection and control units (ENG) - Trinet

Sepam - HV/MV Protection and control units (ENG) - Trinet

Sepam - HV/MV Protection and control units (ENG) - Trinet

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Reactive overpower (cont’d)ANSI codefunction n°32QF541Block diagramF541/1OperationI1U21xQ > QsT0F541/2This protection is designed for balanced<strong>and</strong> unbalanced 3-wire, 3-phase systems(non distributed neutral).c It picks up when the real power flowing in onedirection or the other, depending on the use(supplied or absorbed) is greater than the set point,c It includes a definitie time delay.The function only operates when the followingcondition is met: Q > 3.1% P which provides a highlevel of sensitivity <strong>and</strong> stability.It is based on the "two wattmeter" method.c The direction of power is in accordance withparameter selection feeder or incomer in the status.QI3xU32Q < -QsT 0Direction data are in accordance with the following wiring diagram:F541/3F541/4L1L2L3(1)3AQQsoverpower876543214A3U/VoDPC-QsP41522BECMreverse power63Operating zoneFeederIncomer(1) terminal numberfor compact (S26)*<strong>Sepam</strong> 2000.A…… .Aterminal numberfor st<strong>and</strong>ard (S36)*<strong>Sepam</strong> 2000reversepoweroverpowerreversepoweroverpowerNote: refer to the installation document for other arrangements.* S35, S25 for earlier versions.2/54 <strong>Protection</strong> functions

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