ISOMETER® isoPV425 with AGH420
- Ground-fault monitoring device for AC and DC IT systems
- Application photovoltaic systems up to AC 690 V/DC 1000 V
- Automatic adaptation to the system leakage capacitance up to 1000 μF
- Measurement of the nominal system voltage (RMS) with undervoltage and overvoltage detection
The ISOMETER® of the isoPV425 series monitors the insulation resistance of unearthed AC/DC main circuits (IT systems) with nominal voltages of 3(N)AC, AC, AC/DC 0…690 V or DC 0…1000 V.
DC components existing in AC/DC systems do not influence the operating characteristics. A separate supply voltage allows deenergised systems to be monitored as well. The maximum permissible system leakage capacitance is 1000 µF.
- Ground-fault monitoring device for AC and DC IT systems
- Application photovoltaic systems up to AC 690 V/DC 1000 V
- Automatic adaptation to the system leakage capacitance up to 1000 μF
- Measurement of the nominal system voltage (RMS) with undervoltage and overvoltage detection
The ISOMETER® of the isoPV425 series monitors the insulation resistance of unearthed AC/DC main circuits (IT systems) with nominal voltages of 3(N)AC, AC, AC/DC 0…690 V or DC 0…1000 V.
DC components existing in AC/DC systems do not influence the operating characteristics. A separate supply voltage allows deenergised systems to be monitored as well. The maximum permissible system leakage capacitance is 1000 µF.
Features
- Monitoring for unearthed AC and DC systems with galvanically connected rectifiers or inverters
- Measurement of the nominal system voltage Un (True RMS) with undervoltage and overvoltage detection
- Measurement of DC voltages system to earth (L+/PE and L-/PE)
- Automatic adaptation to the system leakage capacitance up to 1000 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 1…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 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
Applications
- AC, DC or AC/DC main circuits
- Solar systems with directly connected inverters
- Solar systems with high system leakage capacitances
- Solar systems with high but slow voltage fluctuations
- Systems including switched-mode power supplies
ISOMETER® isoPV425 with AGH420 Variant(s)
| Type | Nominal system voltage* Un | Supply voltage* US | Art. No.** |
|---|---|---|---|
| isoPV425-D4 with AGH420 | DC 0…1000 V, AC 0…690 V | DC 24…240 V, AC 100…240 V | B71036303 B91036303 |
* Absolute values
**(B7… = push-wire terminal / B9… = screw-type terminal)
Optional Accessories for ISOMETER® isoPV425 with AGH420
| Type | Art. No. |
|---|---|
| Mounting clip for screw mounting (one piece per device) | B98060008 |
| Mounting frame XM420 | B990994 |
