Bender ISOMETER IRDH575, Manual

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Technical data IRDH575
92
IRDH575_D00089_05_M_XXEN/01.2020
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
m
........................................................................................................................................ ≤ 40 V
Measuring voltage
U
m
(IRDH575B1-4227)........................................................................................................ ≤ 10 V
Measuring current
I
m
(at
R
F
= 0Ω) ................................................................................................................ ≤ 220 μA
Internal DC resistance DC
R
i
............................................................................................................................ ≥ 180 kΩ
Internal impedance
Z
i
, at 50 Hz...................................................................................................................... ≥ 180 kΩ
Permissible extraneous DC voltage
U
fg
(version B1) ................................................................................... ≤ DC 810 V
Permissible extraneous DC voltage
U
fg
(version B2) ................................................................................ ≤ DC 1060 V
System leakage capacitance
C
e
...................................................................................................................... ≤ 500 μF
Factory setting
C
e
.................................................................................................................................................. 150 μF
Measuring circuit for insulation fault location (EDS)
Test current
I
p
DC ............................................................................................................................ 1/2.5/10/25/50 mA
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
/
±15 % **
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