Bender ISOMETER IRDH375 - 9 Technical Data IRDH375(B); Data in Tabular Form

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IRDH375_D00124_05_M_XXEN/01.2020
9. Technical data IRDH375(B)
9.1 Data in tabular form
The values marked with * are absolute values
Insulation coordination acc. to IEC 60664-1
Rated voltage.....................................................................................................................................................AC 800 V
Rated impulse voltage/pollution degree..............................................................................................................8 kV/3
Voltage ranges
IRDH375….:
Nominal voltage range U
n
.......................................................................................................... AC/3NAC 0…793 V*
Nominal frequency f
n
(for f < 50 Hz see characteristic curve on page 85) ............................................ 0.1…460 Hz
Nominal 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 Hz
Supply 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 VA
Response values
Response value R
an1
(Alarm 1) ...............................................................................................................1 kΩ …10 MΩ
Response value R
an2
(Alarm 2) ...............................................................................................................1 kΩ …10 MΩ
Relative uncertainty (20 kΩ…1 MΩ) (acc. to IEC 61557-8:2007-01) ............................................................. ±15 %
Relative uncertainty (1 kΩ…20 kΩ)......................................................................................................+2 kΩ/+20 %
Relative uncertainty (1 MΩ…10 MΩ)................................................................................................ 0.2 MΩ/+20 %
Response time t
an
at R
F
= 0.5 x R
an
and C
e
= 1 μF............................................................................................... ≤ 5 s
Measuring time...........................................................................................................................see characteristic curve
Hysteresis (1 kΩ…10 kΩ) ................................................................................................................................... +2 kΩ
Hysteresis (10 kΩ…10 MΩ)................................................................................................................................. 25 %