FRONIUS DC OVP TYPE 1+2 – M MULTISTRING is a surge protection device (SPD) that shields your PV system from both direct and indirect lightning strikes and other overvoltage events on the DC side . It is designed for integration with Fronius SnapINverter systems, like the Symo and Primo series
Key Features:
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Dual Protection: Offers combined Type 1 (for direct lightning strikes) and Type 2 (for indirect strikes and switching surges) protection .
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Multi-MPPT Compatibility: The “M” or “Multistring” model is tailored for systems using two MPPT trackers independently .
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Remote Monitoring: Integrated signalling alerts you via Fronius Solar.web when the arrester trips, facilitating quick response .
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Easy Maintenance: Plug-in module can be replaced quickly and cheaply after a surge event, minimizing service time and cost .
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Seamless Integration: Designed specifically for Fronius SnapINverter systems (Symo, Primo), ensuring perfect compatibility and reliability .
Technical Data Table
| Parameter | Specification |
|---|---|
| Product Name | Fronius DC OVP Type 1+2 – M MultiString |
| Protection Type | Combined Type 1 + Type 2 |
| Nominal Voltage (Uₙ) | 880 V DC |
| Max. Continuous Operating Voltage (U꜀) | 1,060 V DC |
| Rated Discharge Current (Iₙ) | 20 kA (8/20 µs) |
| Lightning Impulse Current (Iimp) | 12.5 kA (10/350 µs) |
| Connection Cross-Section | 2.5 mm² – 25 mm² |
| Fault Indicator | Mechanical, red |
| Remote Signalling | Integrated changeover contact |
| Weight | Approx. 0.3 kg (module) |
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