Bender A-Isometer IRDH 275 - 7. Technical data IRDH275(B); 7.1 Data in tabular form

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TGH1361en/11.2009
7. Technical data IRDH275(B)
7.1 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
IRDH275....:
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 64)............................. 50...460 Hz
Nominal voltage range U
n
.................................................................................................... DC 0...650 V*
IRDH275....-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*
IRDH....-427:
Supply voltage U
s
(see nameplate)................................................................................... DC 19.2...72 V*
IRDH275....:
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
Absolute error (1 kΩ...10 kΩ) ........................................................................................................+2 kΩ
Relative 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 s
Measuring time..................................................................................................... see characteristic curve
Hysteresis (1 k
Ω...10 kΩ) .............................................................................................................. +2 kΩ
Hysteresis (10 kΩ...10 MΩ)............................................................................................................. 25 %
Measuring circuit
Measuring voltage U
m
................................................................................................................... ≤ 50 V
Measuring current I
m
max. (at R
F
= 0 Ω) ............................................................................... ≤ 280 μA
Internal DC resistance R
i
............................................................................................................ ≥ 180 kΩ
Internal impedance Z
i
, at50 Hz ................................................................................................. ≥ 180 kΩ