isoPV1685P-425 Isolationsüberwachungsgerät DC-IT
Product description
The device is used to monitor the insulation of large PV systems designed as IT systems up to DC 1500 V. The measuring method specially developed for slow voltage fluctuations (MPP tracking) also monitors the insulation resistance in systems that have very high leakage capacitances to earth due to large solar generator surfaces and EMC interference suppression measures. The device generates suitable test current signals for insulation fault location. This enables the insulation fault to be localized with permanently installed or mobile insulation fault locators.
Functions and features:
- Insulation monitoring of large-scale PV systems
- Measurement of low-resistance insulation faults
- Separately adjustable response values Ran1 (alarm 1) and Ran2 (alarm 2) (both 200 Ω...1 MΩ) for pre-warning and alarm. Ran1 ≥ Ran2 applies.
- Automatic adaptation to high system leakage capacitances up to 2000 μF, selectable range
- Connection monitoring of L+, L- for polarity reversal
- Integrated test current generator up to 50 mA (isoPV1685P only)
- Device self-test with automatic message in the event of a fault
- Separate alarm relays for insulation fault 1, insulation fault 2 and device fault
- CAN interface for outputting measured values, statuses and alarms
- RS-485 interface
- isoPV1685P: BMS bus, e.g. for controlling insulation fault location
- isoPV1685RTU: BMS bus or Modbus (switchable with DIP switch)
- μSD card with data logger and history memory for alarms
