A-ISOMETER® IRDH375 IRDH375B - Bender

7. Technical data IRDH375(B)7.1 Data in tabular formThe values marked with * are absolute valuesInsulation coordination acc. to IEC 60664-1Rated voltage ................................................................................................................................AC 800 VRated impulse voltage/pollution degree ....................................................................................... 8 kV / 3Voltage rangesIRDH375....:Nominal voltage range U n ............................................................................. 1AC / 3/(N) AC 0...793 V*Nominal frequency f n (for f < 50 Hz see characteristic curve on page 66) ........................... 50...460 HzNominal voltage range U n .................................................................................................... DC 0...650 V*IRDH375....-435:Supply voltage U s (see nameplate).....................................................................................AC 88...264 V*Frequency range U s ................................................................................................................. 42...460 HzSupply voltage U s (see nameplate).................................................................................... DC 77...286 V*IRDH375....-427:Supply voltage U s (see nameplate)................................................................................... DC 19.2...72 V*IRDH375....:Power consumption..................................................................................................................... ≤ 14 VAResponse valuesResponse value R an1 (Alarm 1) ..........................................................................................1 kΩ ... 10 MΩResponse value R an2 (Alarm 2) ..........................................................................................1 kΩ ... 10 MΩAbsolute error (1 kΩ...10 kΩ) ........................................................................................................ +2 kΩRelative percentage error (10 kΩ...10 MΩ)....................................................................... 0% ... +20 %Response time t an at R F = 0.5 x R an and C e = 1 µF ....................................................................... ≤ 5 sMeasuring time...................................................................................................... see characteristic curveHysteresis (1 kΩ...10 kΩ) .............................................................................................................. +2 kΩHysteresis (10 kΩ...10 MΩ)............................................................................................................. 25 %Measuring circuitMeasuring voltage U m ................................................................................................................... ≤ 50 VMeasuring current I m max. (at R F = 0 Ω) ............................................................................... ≤ 278 µAInternal DC resistance R i ............................................................................................................ ≥ 180 kΩInternal impedance Z i , at 50 Hz................................................................................................ ≥ 180 kΩTGH1352en/11.200461