Solar PV Isolator Panel Level Firefighter Safety Switches Rapid Shutdown Onccy Switch

In most photovoltaic systems, the dc isolator is integrated into the dc/ac power inverter. After switching off the dc isolator, the cables between the dc solar modules and dc/ac power inverter running through the building are still subject to up to 1000 v dc. In the event of a fire, firefighters are exposed to a very serious source of potential danger. The firefighter safety switch provides the solution. It directly disconnects the dc current in close proximity to the solar modules and creates a safer situation for firefighters.

Key Features

• PV module rapid shutdown meeting NEC 2017 & 2020 (690.12) requirements.
• Rapid shutdown: Triggered within 30 seconds after the monitor loses power or the control switch manually turn off.
• Module level data monitoring: 5 big datum including voltage, current, power generation, power generation operating point, temperature, and snapshot collection.
• String break protection: active protection, all PV module safety devices enter shutdown state within 5 seconds.
• Bidirectional PLC communication.

Product Benefits

• Three Shutdown Modes
• Match LVRT feature of the inverter
• Meet to NEC 2017/2020 690.12 regulations
• Comply with SUNSPEC protocol
• Single rapid shutdown connects to 1 PV modules
• PLC communication control
• Shutdown while ambient temperature is over 85ºC
• Flame retardant rating: UL94-V0

Automatically shutdown the DC power of panels when detecting temperature of the area is higher than 85°C, to protect roof top PV systems fire safety.