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

Reactive overpower protectionANSI codefunction n°32QF541Equipmentc single-phase current and voltage generatorsc phase shifter with angle indicatorc ammetersc voltmeterc chronometerc calculatorc adapter for ECA modulec documentationWiringc diagram B5c protective relays:F541/1, F541/2 for overpowerF541/3, F541/4 for reverse overpower,TestProcedurec protection parameter setting:Reverse Q (used as standard) or Over / Qv set Qs set point to the desired valuev set T to the desired value (see in metering and protection functiondocumentation)v disable the following protections (1) :O/C X; Unbalance; E/F X (if sum of 3 CTs is used); Over P or Reverse P;U U/V X; U/current; N Vol Disp (if sum of 3 VTs is used)QoverpowerQs-Qs88°Pc read the section entitled measurement and testingmethodThe reactive overpower protection may be tested byinjecting single-phase voltage and current,in accordance with diagram B5, into U21 and I1respectively.c status parameter setting: enter all data itemsv Fn network frequencyv Unp network phase-to-phase voltagev Uns phase-to-phase voltage of the VT secondarycircuitsv number of VTs connected(set 1U for single-phase testing)v select In the CT primary valuev check and set the microswitches on the 3U/Vo,ECM and ECA modulesv number of VTs connectedv choose the direction of power flow:feeder or incomerFeederreversepowerreverseunderpowerunderpowerIncomerreverseunderpowerunderpower(1)remember to reactivate the protections at the end of testing.1/46Sepam 2000 - Testing