1MAC309294-MB F Section 4Protection functionsRER620 197Technical Manual4.3.1.10 Technical dataTable 208: 59 Technical data4.3.2 Single-phase undervoltage protection 274.3.2.1 Identification4.3.2.2 Function blockFigure 89: Function blockCharacteristic ValueOperation accuracy Depending on the frequency of the voltagemeasured: f n ±2Hz±1.5% of the set value or ±0.002 x V nPickup time 1 ,21. Pickup value = 1.0 x V n , Voltage before fault = 0.9 x V n , fn = 60 Hz, overvoltage in one phase-to-phase withnominal frequency injected from random phase angle, results based on statistical distribution of 1000measurements2. Includes the delay of the signal output contactMinimum Typical MaximumV Fault = 1.1 x setPickupvalue22 ms 24 ms 26 msReset time < 40 msReset ratio Depends of the setRelative hysteresisRetardation time < 35 msOperate time accuracy in definite time mode ±1.0% of the set value or ±20 msOperate time accuracy in inverse time mode ±5.0% of the theoretical value or ±20 ms33. Maximum Pickup value = 1.20 x V n , Pickup value multiples in range of 1.10 to 2.00Suppression of harmonics DFT: -50 dB at f = n x fn , where n = 2, 3, 4, 5,…Function description IEC 61850identificationIEC 60617identificationANSI/IEEE C37.2device numberSingle-phase undervoltage protection SPHPTUV 3U< 27V_B_BCBLOCKOPERATESTART27V_A_ABV_C_CAOPR_A_ABOPR_B_BCOPR_C_CAST_A_ABST_B_BCST_C_CA
