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).
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- Only device versions isoPV1685PFR and isoPV1685P provide a locating current injector. The device version isoPV1685PFR additionally provides residual current monitoring!
- 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
- Integrated locating current injector up to 50 mA (isoPV1685P(FR) only)
- Fast detection of insulation faults on the AC side by residual current monitoring (inverter, transformer) allowing fast disconnection (isoPV1685PFR only)
- Residual current response values IΔn for prewarning and alarm (1…5 A) (isoPV1685PFR only)
- CT connection monitoring (isoPV1685PFR only)
- Device self test with automatic fault message in the event of a fault
- Alarm relays separately adjustable for insulation faults, residual current faults and device errors (isoPV1685PFR only);
- Alarm relays separately adjustable for insulation fault 1, insulation fault 2 (isoPV1685P, isoPV1685RTU only)
- CAN interface to output measured values, statuses and alarms
- RS-485 interface
- isoPV1685(P)FR: 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* | Art. No. |
|---|---|---|---|
| isoPV1685RTU-425 | 200 Ω…1 MΩ | DC 18…30 V | B91065603 |
| isoPV1685P-425 | 200 Ω…1 MΩ | DC 18…30 V | B91065604 |
| isoPV1685PFR-425 | 200 Ω…1 MΩ | DC 18…30 V | B91065600 |
Downloads for ISOMETER® isoPV1685 Series
| Category | Product | Language | Date | Size | Download |
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