Bender ISOMETER IRDH275 Handbuch Seite 168

Measuring circuit
Measuring voltage U
m
Measuring current I max. (at R
m
Internal DC resistance R
Internal impedance Z
at50 Hz......................................................................................................................... ≥ 180 kΩ
i
Permissible extraneous DC voltage U
Permissible system leakage capacitance C
Factory setting....................................................................................................................................................... 150 μF
Displays
Display, illuminated .............................................................................................................................. two-line display
Characters (number of characters)........................................................................................................................2 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 according to IEC 61326-2-4, the tolerances may double
Outputs/inputs
TEST/ RESET button..............................................................................................................................internal /external
Cable length TEST/RESET button external ......................................................................................................... ≤ 10 m
Current output for measuring instrument SKMP (scale centre point = 120 kΩ): ..........................................................
Current output IRDH275 (load) ...................................................................................................... 400 μA (≤ 12.5 kΩ)
Current output IRDH275B (load).........................................................................................................20 mA (≤ 500 Ω)
Accuracy current output (1 kΩ...1 MΩ)
in relation to the displayed measured value........................................................................................ ±10 %, ±1 kΩ
Serial interface
Interface / Protocol IRDH275....................................................................................................... RS485 / ASCII-IsoData
Interface / Protocol IRDH275B.................................................................................................................... RS485 / BMS
Connection ................................................................................................................................................ terminals A/B
Cable length ................................................................................................................................................... ≤ 1200 m
Shielded cable (shield on one side to PE) ................................................ two-core, ≥ 0.6 mm
Terminating resistor.................................................................................................................................. 120 Ω (0.5 W)
Device address, BMS bus .................................................................................................. 1...30 (factory setting = 3)
76
........................................................................................................................................ ≤ 50 V
= 0 Ω)...................................................................................................... ≤ 280 μA
F
.................................................................................................................................. ≥ 180 kΩ
i
.................................................................................................... ≤ DC 1200 V
fg
................................................................................................... ≤500 μF
e
Technical data IRDH275(B)
IRDH275_D00122_03_M_XXEN/05.2017
/
±15 % **
2
, e.g. J-Y(St)Y 2 x 0.6