Bender ISOMETER IRDH575 Manual page 91

Technical data IRDH575
Relative uncertainty (1 kΩ...20 kΩ) ......................................................................................................+2 kΩ/+20 %
Relative uncertainty (1 MΩ...10 MΩ) ................................................................................................ 0.2 MΩ/+20 %
Measuring time......................................................................................................................... see characteristic curves
Hysteresis (1 kΩ...10 kΩ)................................................................................................................................... +2 kΩ
Hysteresis (10 kΩ...10 MΩ)................................................................................................................................. 25 %
Measuring circuit for insulation measurement
Measuring voltage U
........................................................................................................................................ ≤ 40 V
m
Measuring voltage U
(IRDH575B1-4227)........................................................................................................ ≤ 10 V
m
Measuring current I (at R
m
Internal DC resistance DC R
Internal impedance Z
, at 50 Hz...................................................................................................................... ≥ 180 kΩ
i
Permissible extraneous DC voltage U
Permissible extraneous DC voltage U
System leakage capacitance C
Factory setting C
.................................................................................................................................................. 150 μF
e
Measuring circuit for insulation fault location (EDS)
Test current I
DC ............................................................................................................................ 1/2.5/10/25/50 mA
p
Test pulse/break ................................................................................................................................................... 2 s/4 s
Displays
Display, illuminated.............................................................................................................................. four-line display
Characters (number of characters)........................................................................................................................ 4 x 16
Display range, measuring value .............................................................................................................. 1 kΩ...10 MΩ
Operating uncertainty (20 kΩ...1 MΩ) (acc. to IEC 61557-8:2007-01) .................................................... ±15 % **
Operating uncertainty (1 kΩ...20 kΩ) ............................................................................................ ±1 kΩ
Operating uncertainty (1 MΩ...10 MΩ) ................................................................................... ±0.1 MΩ/±15 % **
** = under test conditions in accordance with IEC 61326-2-4, the tolerances may double
Inputs/Outputs
Test/Reset button ................................................................................................................................ internal/external
Current output for measuring instrument SKMP (scale centre point = 120 kΩ):..........................................................
Current output IRDH575 (max. load)..................................................................................... 0/4...20 mA (≤ 500 Ω)
Accuracy current output (1 kΩ...1 MΩ)
in relation to the displayed measured value ....................................................................................... ±10 %, ±1 kΩ
IRDH575_D00089_05_M_XXEN/01.2020
= 0Ω) ................................................................................................................ ≤ 220 μA
F
............................................................................................................................ ≥ 180 kΩ
i
(version B1)................................................................................... ≤ DC 810 V
fg
(version B2)................................................................................ ≤ DC 1060 V
fg
...................................................................................................................... ≤ 500 μF
e
/
±15 % **
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