Bender AGH420, Руководство пользователя

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14 isoEV425_D00126_09_M_XXEN/03.2019
3. Function
3.1 Device characteristics
 
Monitoring for DC charging stations (mode 4 acc. to IEC 61851-23) for
charging of electric vehicles
 
Measurement of the nominal system voltage U
n
(True RMS) with und-
ervoltage and overvoltage detection
 
Measurement of residual voltages system to earth (L+/PE and L-/PE)
 
Automatic adaptation to the system leakage capacitance C
e
up to 5 μF
or 20 μF
 
Automatic device self test with connection monitoring
 
Selectable start-up delay, response delay and delay on release
 
Two separately adjustable response value ranges of 1kΩ …500 kΩ
(Alarm 1, Alarm 2)
 
Alarm signalling via LEDs ("AL1", "AL2"), a display and alarm relays ("K1",
"K2")
 
N/C operation or N/O operation of the relays selectable
 
Measured value indication via multi-functional LCD
 
Fault memory can be activated
 
RS-485 (galvanically isolated) including the following protocols:
– BMS interface (Bender measuring device interface) for data
exchange with other Bender components
– Modbus RTU
– IsoData (for continuous data output)
 
Password protection to prevent unauthorised parameter changes