Bender ISOMETER isoCHA425 Manual page 28

10. Technical data
10.1 Tabular presentation
( )* = factory setting
Insulation coordination acc. to IEC 60664-1/IEC 60664-3
Definitions:
Measuring circuit (IC1)......................................................................................................................................... L+, L-
Supply circuit (IC2)............................................................................................................................................... A1, A2
Output circuit (IC3)..........................................................................................................................................11, 14, 24
Control circuit (IC4) ................................................................................................................................. E, KE, T/R, A, B
Rated voltage....................................................................................................................................................................400 V
Overvoltage category ............................................................................................................................................................ III
Rated impulse voltage:
IC1/(IC2-4)................................................................................................................................................................ 6 kV
IC2/(IC3-4)................................................................................................................................................................ 4 kV
IC3/IC4 ..................................................................................................................................................................... 4 kV
Rated insulation voltage:
IC1/(IC2-4)..............................................................................................................................................................400 V
IC2/(IC3-4 ).............................................................................................................................................................250 V
IC3/IC4 ...................................................................................................................................................................250 V
Polution degree ..................................................................................................................................................................... 3
Protective separation (reinforced insulation) between:
IC1/(IC2-4).....................................................................................................................Overvoltage category III, 600 V
IC2/( IC3-4 )...................................................................................................................Overvoltage category III, 300 V
IC3/IC4 ...........................................................................................................................Overvoltage category III, 300 V
Voltage test (routine test) according to IEC 61010-1:
IC2/( IC3-4 )......................................................................................................................................................AC 2.2 kV
IC3/IC4 .............................................................................................................................................................AC 2.2 kV
Supply voltage
Supply voltage U
.............................................................................................................. AC 100...240 V/DC 24...240 V
s
Tolerance of U
................................................................................................................................................. -30...+15 %
s
Frequency range U
.............................................................................................................................................. 47...63 Hz
s
Power consumption ....................................................................................................................................... ≤ 3 W, ≤ 9 VA
IT system being monitored
Nominal system voltage U
............................................................................................................................. DC 50...400 V
n
Tolerance of U
.............................................................................................................................................................+25 %
n
28
Technical data
Measuring circuit
Measuring voltage U
.................................................................................................................................................... ±12 V
m
Measuring current I at R , Z
= 0 ..........................................................................................................................≤ 110 μA
m F F
Internal resistance R , Z
.............................................................................................................................................≥ 115 kΩ
i i
Permissible system leakage capacitance C
...................................................................................................................≤ 2 μF
e
Response values
Response value R ..........................................................................................................................R
an1
Response value R
............................................................................................................................. 5 kΩ...R
an2
Relative uncertainty R
...................................................................................................................... ±15 %, at least ±2 kΩ
an
Hysteresis R
............................................................................................................................................ 25 %, at least 1 kΩ
an
Undervoltage detection U<.............................................................................................................. 50 V...U> (off/50 V)*
Overvoltage detection U>..............................................................................................................U<...400 V (off/400 V)*
Relative uncertainty U............................................................................................................................. ±5 %, at least ±5 V
Hysteresis U.................................................................................................................................................... 5 %, at least 5 V
Time response
Response time t of R = 0,5 x R and C
=1 μF according to IEC 61557-8 .............................................................. ≤ 1 s
an F an e
Start-up delay t ............................................................................................................................................... 0...10 s (0 s)*
Response delay t
.......................................................................................................................................... 0...99 s (0 s)*
on
Delay on release t
........................................................................................................................................ 0...99 s (0 s)*
off
Displays, memory
Display.............................................................................................................. LC display, multi-functional, not illuminated
Display range measured value insulation resistance (R
F
Operating uncertainty......................................................................................................................... ±15 %, at least ±2 kΩ
Display range measured value nominal system voltage (U
Operating uncertainty............................................................................................................................. ±5 %, at least ±5 V
Display range measured value system leakage capacitance of R
Operating uncertainty of R ≥ 20 kΩ and C
≤ 5 μF........................................................................ ±5 %, at least ± 0,1 μF
F e
Password .............................................................................................................................................. off/0...999 (0, off)*
Fault memory alarm messages................................................................................................................................. on/(off)*
Interface
Interface/protocol .......................................................................................................... RS-485/BMS, Modbus RTU, isoData
Baud rate ..................................................................... BMS (9.6 kBit/s), Modbus RTU (selectable), isoData (115.2 kBits/s)
Cable length (9.6 kBits/s) ....................................................................................................................................... ≤ 1200 m
Cable: twisted pairs, shield connected to PE on one side ..................................................................... min. J-Y(St)Y 2 x 0.6
Terminating resistor .......................................................................................... 120 Ω (0.25 W), internal, can be connected
Device address, BMS bus, Modbus RTU............................................................................................................... 3...90 (3)*
...250 kΩ (46 kΩ)*
an2
an1
) ................................................................................. 1 kΩ...2 MΩ
) ....................................................................... 50...400 V
n
> 10 kΩ (only „dc" mode) .............................0...17 μF
F
isoCHA425_D00352_01_M_XXEN/10.2019
(23 kΩ)*
RMS