ISOMETER® isoPV1685 Series
- Ground-fault monitoring device for DC IT systems
- Application photovoltaic systems up to DC 1500 V
- Separately adjustable response values 200 Ω…1 MΩ
- Automatic adaptation to the system leakage capacitance up to 2000 μF
- Interface selectable RS-485 or Modbus
The device is used for insulation and residual current monitoring of large photovoltaic systems up to 1500 V designed as IT systems. The measurement method specially developed for slow voltage fluctuations (MPP-Tracking) monitors the insulation resistance even in systems equipped with large solar generator panels where extremely high system leakage capacitances against ground exist due to interference suppression methods. Adaptation to system-related high leakage capacitances also occurs automatically. The device generates locating current pulses required for ground-fault location. That allows the localization of the ground fault using permanently installed or mobile ground-fault locators. Integrated ground-fault monitoring allows fast signalling of a measured ground faults on the AC side (inverter, transformer).
- Features
- Ordering information
- Downloads
- Only device version isoPV1685P provide a locating current injector.
- Insulation monitoring of large-scale photovoltaic systems
- Measurement of low-resistance insulation faults
- Separately adjustable response values Ran1 (alarm 1) and Ran2 (alarm 2) (both 200 Ω…1 MΩ) for prewarning and alarm. Ran1 ≥ Ran2 applies.
- Automatic adjustment to high system leakage capacitances up to 2000 μF, selectable range
- Connection monitoring of L+, L- for reverse polarity (DC only)
- Integrated locating current injector up to 50 mA (isoPV1685P only)
- Device self test with automatic message in the event of a fault
- Alarm relays separately adjustable for insulation fault 1, insulation fault 2
- CAN interface to output measured values, statuses and alarms
- RS-485 interface
– isoPV1685P: BMS bus, e.g. to control the insulation fault location
– isoPV1685RTU: BMS bus or Modbus (can be switched using the DIP switch) - μSD card with data logger and history memory for alarms
Variants of ISOMETER® isoPV1685 Series
| Type | Response value range | Supply voltage Us | Nominal system voltage Un | Art. No. |
|---|---|---|---|---|
| isoPV1685RTU-425 | 200 Ω…1 MΩ | DC 18…30 V | AC 0…1000 V/DC 0…1500 V | B91065603 |
| isoPV1685P-425 | 200 Ω…1 MΩ | DC 18…30 V | DC 0…1500 V | B91065604 |
Downloads for ISOMETER® isoPV1685 Series
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