32
IRDH275BM-7_D00123_07_M_XXEN / 08/2020
Technical data IRDH275BM-7 with AGH675S-7…
6
Technical data IRDH275BM-7 with AGH675S-7…
6.1
Data in tabular IRDH275BM-7
Insulation coordination acc. to IEC 60664-1
Rated voltage ..............................................................................................................................................................................AC 800 V
Rated impulse voltage/pollution degree ....................................................................................................................................... 8 kV/3
Voltage ranges
Nominal voltage range
U
n
............................................................................................................................................via AGH675S-7…
Supply voltage
U
S
(refer to nameplate for other values) .................................................................................................. DC 19.2…72 V
Power consumption ...................................................................................................................................................................... ≤14 VA
Response values
Response value
R
an1
(Alarm 1) .......................................................................................................................................100 kΩ…10 MΩ
Response value
R
an2
(Alarm 2) .......................................................................................................................................100 kΩ…10 MΩ
Relative percentage error 100…500 kΩ .................................................................................................................................... ±100 kΩ
Relative percentage error 500 kΩ…10 MΩ .......................................................................................................................0 %…+20 %
Response time
t
an
....................................................................................................................................................................... ≤ 5 min
Hysteresis .......................................................................................................................................................................................... 25 %
Measuring circuit
Measuring voltage
U
m
...................................................................................................................................................................≤ 50 V
Measuring current
I
m
(at
R
F
= 0 Ω) ............................................................................................................................................. ≤ 21 μA
Internal DC resistance
R
i
........................................................................................................................................................... ≥ 2.4 MΩ
Internal impedance
Z
i
, at 50 Hz................................................................................................................................................. ≥ 2.4 MΩ
Permissible extraneous DC voltage
U
fg
.................................................................................................................... with AGH675S-7…
Permissible system leakage capacitance
C
e
................................................................................................................................... ≤ 5 μF
Factory setting ...................................................................................................................................................................................2 μF
Displays
Display, illuminated ........................................................................................................................................................two-line display
Characters (number of characters) ...................................................................................................................................................2 x 16
Display range, measuring value .......................................................................................................................................50 kΩ…10 MΩ
Relative percentage error 50…500 kΩ ........................................................................................................................................ ±50 kΩ
Relative percentage error 500 kΩ…10 MΩ .................................................................................................................................. ±10 %
Outputs/inputs
TEST/RESET button . ........................................................................................................................................................internal/external
Cable length TEST/RESET button external ......................................................................................................................................≤ 10 m
Current output for measuring instrument SKMP (scale centre point = 1.2 MΩ):
Current output (load) ......................................................................................................................................................20 mA (≤ 500 Ω)
Accuracy current output (100 kΩ…10 MΩ)................................................................................................................... ±10 %, ±100 kΩ
Serial interface
Interface/Protocol IRDH275B .................................................................................................................................................RS-485/BMS
Connection ..........................................................................................................................................................................terminals A/B
Cable length..............................................................................................................................................................................≤ 1,200 m
Recommended cable (screened, screen on one side connected to PE)...............................................................................J-Y(St)Y 2 x 0.6
Terminating resistor.............................................................................................................................................................120 Ω (0.5 W)
Device address, BMS bus .............................................................................................................................. 1…30 (factory setting = 3)
