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

Real overpowerANSI codefunction n°32PF531Block diagramF531/1OperationThis protection is designed for balancedand 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 above the set point,c It includes a definite time delay.The function only operates when the followingcondition is met: P > 3.1% Q which provides a highlevel of sensitivity and stability in the eventof a short-circuit.It is based on the "two wattmeter" method.c The direction of power is in accordancewith parameter selection feeder or incomerin the status menu.T 0I1P > PsF531/2xU21PF531/3I3xT 0U32P < -PsF531/4Direction data are in accordance with the following wiring diagram:L1L2L3Q(1)reverse power-Psoverpower+PsP876543213A4A3U/VoDPC412BECM52Operating zone63FeederIncomer(1) terminal numberfor compact (S26)*Sepam 2000.Areversepoweroverpowerreversepoweroverpower…….Aterminal numberfor standard (S36)*Sepam 2000Note: Refer to the installation document for other arrangements.* or S35, S25 for earlier versions.2/52 Protection functions