MiCOM P921/P922/P923 - Schneider - error

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P92x/EN CM/F22Page 16/26Commissioning GuideMiCOM P921/P922/P9235.3.2 MiCOM P921-P922-P923 relay parametersNote the settings of the MiCOM P921-P922-P923 relays in the tables below.[59] OVERVOLTAGE Default valuesGroup 1SettingsGroup 2 (P922-P923)1 st stage activated No No / AND / OR * No / AND / OR *1 st overvoltage stage 130.0V if H1**VV480.0V if H2Time delay type DMT DMT/IDMT * DMT/IDMT *TMS 1.0tRESET V> 0.01s Secs SecstV>= 0.04s Secs Secs2 nd stage activated No No / AND / OR * No / AND / OR *2 nd overvoltage stage 130.0V if H1**VV480.0V if H2tV>>= 0.01s Secs Secs3 rd stage activated No No / AND / OR * No / AND / OR *3 rd overvoltage stage 130.0V if H1**VV480.0V if H2tV>>>= 0.01s Secs SecsHysteresis 0.98[27] UNDERVOLTAGE Default valuesGroup 1SettingsGroup 2 (P922-P923)1 st stage activated No No / AND / OR * No / AND / OR *1 st undervoltage stage 5.00V if H1**VV20.0V if H2Time delay type DMT DMT/IDMT * DMT/IDMT *TMS 1.0tRESET V< 0.01s Secs SecstV
Commissioning GuideP92x/EN CM/F22MiCOM P921/P922/P923 Page 17/265.3.3 Configuration with 3 single voltages (“3Vpn”) and “AND” detection logicDo not exceed a maximum voltage of 2xVn in the following tests.In view of the detection logic (“AND”), the voltages must be injected into the 3 phase inputsto cause tripping to occur.5.3.3.1 Stages (V>) or (V) or (V) or (tV) check:1. If time delay (tV>) is short, gradually inject the voltage into the 3 phases up to the stagevalue: tripping should occur for a voltage equal to the stage (V>) to within ±2%2. If time delay (tV>) is long, inject a voltage equal to 0.98x(V>) into the 3 phases andcheck that tripping does not occur. Then inject 1.2x(V>) and check that tripping occurs.3. Gradually reduce the voltage on one of the phases and measure the value of the dropoffstage (V>) : the function must reset for a voltage less than or equal to theprogrammed hysteresis.Stage (V
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