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USA NEC2020 90V RSD Device



    PV Rapid Shutdown System (PVRSS) is one of the fundamental safety factors of disbursed photovoltaic system. Its quintessential attribute is to restrict the voltage of 30cm away from the PV module to below 30V indoors 30s after the shutdown device is started.When the putting up the nearby the PV module is placed requires safety or firefighting, it can successfully quit manageable safety dangers such as electric powered powered powered powered shocks, and guard the lives of safety 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 quickly shutdown module with monitoring, which can all at once shut down the PV strings and transmit the documents of the PV strings to the head module with the useful resource of the PLC signal.
2. Head Module(FR-PVMS-Hxx): Controls the tail module with the aid of the PLC signal, and transmit the data to the predominant controller through capability of the utilization of RS485.
3. Main Controller(FR-PVMS-Mxxx): Displays the electrical electricity and one-of-a-kind information of the PV strings, and transmit the data to the cloud platform at the equal time. Users can remotely manipulate it via the  smartphone APP(SafeSolar).

Key Features 

  •      PV module fast shutdown meeting NEC 2017 & 2020 (690.12) necessities

  •      Bidirectional PLC verbal exchange

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

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

  •      Series and parallel arc fault detection, security 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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