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NEC2020 80V RSD Device


        PV Rapid Shutdown System (PVRSS) is one of the imperative security elements of disbursed photovoltaic system. Its integral attribute is to limit the voltage of 30cm away from the PV module to beneath 30V indoors 30s after the shutdown system is started.When the placing up the neighborhood the PV module is located requires protection or firefighting, it can efficiently end manageable protection risks such as electric powered powered powered shocks, and protect the lives of protection personnel and firefighters.

System Components


PV Rapid Shutdown System (PVRSS) is instead composed of the following PV swiftly shutdown devices:

1. Tail Module(FR-PVMS-Txxx): A fast shutdown module with monitoring, which can unexpectedly shut down the PV strings and transmit the files of the PV strings to the head module with the aid of the PLC signal.
2. Head Module(FR-PVMS-Hxx): Controls the tail module via the PLC signal, and transmit the facts to the predominant controller by means of the usage of RS485.
3. Main Controller(FR-PVMS-Mxxx): Displays the electrical energy and special records of the PV strings, and transmit the information to the cloud platform at the equal time. Users can remotely manipulate it through the phone smartphone APP(SafeSolar).

Key Features 

  • PV module speedy shutdown assembly NEC 2017 & 2020 (690.12) necessities

  • Bidirectional PLC verbal exchange

  • PV module monitoring: on/off status, temperature, voltage, current, energy etc.

  • Advanced monitoring: inverter performance, module shading, module degradation, soiling

  • Series and parallel arc fault detection, safety and area

  • Leak/Ground fault detection and place

Application Diagram


Key Technical Specifications

Component Model Item Parameter
Tail Module FR-PVMS-TSXX Input operating voltage range 12V-60V
Accuracy of voltage measuring ±0.2V
Maximum System Voltage 1500V
Output voltage after shutdown V(input)/100
Maximum cont. input current
Reverse current 25A
Accuracy of current measuring ±0.05A
Communication PLC
Communication capability, the
length of cable loop
Operating temperature 40℃~ +80℃
Enclosure Rating NEMA Type 6P/IP68
Safety Compliance UL 1741 (Ed.2, Rev. February 15, 2018),CSA
C22.2 No. 330-17






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