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

Synchronism checkANSI code 25function n°F171, F181Equipmentc single-phase current generator (1)c voltmeterc documentationWiringc B3, B16 diagramc protective relays:F171/3, F181/3Testc read the section entitled measurement and testingmethodc check the SW microswitchesc status parameter setting:v mains frequency (50 or 60 Hz)v Unp, mains phase-to-phase voltage.v Uns, phase-to-phase voltage of the VT secondarycircuitv number of VTs connected.v make the function settings.Proceduretesting of operation with the phase and the voltage indicator(a single single-phase voltage generator is required).c apply rated voltage Uns between terminals 4 and 5 and between terminals2 and 1.v use the pocket terminal to measure:phase shift phase dphi = 0°voltages U = Un and U' = Unv check that the output associated with the function (F171/3 or F181/3) picks upc apply rated voltage Uns between terminals 4 and 5 and between terminals2 and 1.v use the pocket terminal to measure:phase shift phase dphi = 180°voltages U = Un and U' = Unv check that the output associated with the function (F171/3 or F181/3) does notpick upc set the chosen operating mode: mode 1, 2, 3 or 4v apply rated voltage Uns: between terminals 4 and 5 which correspond to U orbetween terminals 2 and 1 which correspond to U' or no voltage according to thechosen mode.v check that the output associated with the function (F171/3 or F181/3) picks uptesting of operation with frequency and voltage(optional test that calls for two single-phase voltage generators)Apply rated voltage Uns to the rated frequency of one of the voltage generatorsbetween terminals 4 and 5c apply rated voltage Uns to the other voltage generator between terminals2 and 1v at a frequency F = Fn - dFs - 0.02 Hzcheck that the output associated with the function (F171/3 or F181/3)is dropped outv at a frequency F = Fn + dFs + 0.02 Hzcheck that the output associated with the function (F171/3 or F181/3)is dropped outv at a frequency F = Fn - dFs /2check that the output associated with the function (F171/3 ou F181/3) picks up anddrops out periodicallyv at a frequency F = Fn + dFs/2check that the output associated with the function (F171/3 ou F181/3) picks up anddrops out periodically.c apply the signal at the rated frequency Fn of the other voltage generator betweenterminals 2 and 1v with an amplitude U = Uns - dUs - 5%check that the output associated with the function (F171/3 or F181/3)is dropped outv with an amplitude U = Uns + dUs + 5%check that the output associated with the function (F171/3 or F181/3)is dropped outv with an amplitude U = Uns - dUs/2check that the output associated with the function (F171/3 or F181/3) is picked upv with an amplitude U = Uns + dUs/2check that the output associated with the function (F171/3 or F181/3) is picked up.(1)2 single-phase generators, one with variable frequency, arenecessary for the optional tests1/54Sepam 2000 - Testing