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Thailand 90V Solar Rapid Shutdown Device


    The PV Rapid Shutdown System (PVRSS) is one of the critical safety elements of a distributed solar system. Its major job is to activate the shutdown device, drop the voltage to below 30V within 30 seconds, and lower the voltage at a distance of 30cm from the PV module. Electric shocks and other potential safety issues can be efficiently avoided, as well as the lives of maintenance workers and firefighters, when the building where the PV module is placed needs maintenance or firefighting.

System Components


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

1. Tail Module (FR-PVMS-Txxx): A completely abrupt shutdown module with monitoring, it can completely abruptly shut down the PV strings and transfer the PV strings' archives to the head module using the signal from the PLC.

2. Head Module (FR-PVMS-Hxx): Controls the tail module with the unquestionably highly recommended assistance of the PLC signal and transmits the data to the primary controller using customarily regularly occurring typically performing usage of RS485.

3. Main Controller (FR-PVMS-Mxxx): Displays the electrical and unique information of the PV strings and simultaneously transmits the archives to the cloud platform. It may be remotely controlled by users thanks to the use of

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, strength etc.

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

  • Series and parallel arc fault detection, safety and area

  • Leak/Ground fault detection and neighborhood

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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