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The Beny Module-Level Rapid Shutdown Device is a leading DC disconnect solution crafted to enhance the safety of solar systems. This innovative device ensures a complete isolation of DC power when faults occur. It incorporates PLC communication for real-time status monitoring and proactive response to AC power loss and over-temperature. Moreover, it demonstrates robust performance in challenging conditions with IP68 rating, and is characterized by a user-friendly plug-and-play design.
1 Panel (≥40v) or 2 Panels (<40v)
2 Panels (≥40v) or 4 Panels (<40v)
The 2017 National Electrical Code (NEC) Section 690.12 requires the module-level rapid shutdown of solar systems, all conductors within an array’s 1-ft boundary have to be reduced to 80V or less within 30 seconds of rapid shutdown initiation.
The module-level rapid shutdown solutions we are offering allow the connection of all types of solar modules which can be communication cable versions and SunSpec versions:
*24VDC communication cable + emergency button switch RSD initiation
*PLC communication + RSD transmitter
Panels connected with BENY Electric RSDs will be reduced to 0V in milliseconds, and the AC powered emergency switch or the RSD transmitter completes the RSD solution meets the NEC rapid shutdown solution.
Beny takes pride in its commitment to delivering cutting-edge rapid shutdown devices that adhere to stringent industry standards. Its RSDs have received certifications from globally recognized organizations such as SunSpec, UL, and CE, which ensures its quality, safety, and performance.
Realizing module-level rapid shutdown; up to 120V and 18A/20A
Achieving automatic shutdown when detecting an AC power loss and over temperature ≥85℃
Maintaining stable operation in harsh environments
Monitoring real-time status and assisting in fault resolution
Obtaining SunSpec, UL and CE certifications; high quality
Adopting MC4 cables makes installation much easier
Rapid shutdown devices are essential in solar systems to enhance safety during emergencies or maintenance. In the event of a fire or other hazards, these devices rapidly cut off the flow of electricity from solar panels to minimize the risk of electrical shock and ensure the safety of first responders and maintenance personnel. Additionally, RSDs contribute to compliance with safety regulations and codes like NEC, reinforcing the overall reliability of the solar power system.
*It can simultaneously monitor the failure and
communication status of multiple Rapid Shutdown Devices.
*The power supply for this monitoring device can be sourced either from the grid’s AC power or the AC side of the solar inverter.
*When an AC power loss occurs, the monitoring device initiates an automatic shutdown of the DC panels at the same time.
*Automatic module-level shutdown when detecting a system temperature ≥85°C
*Automatic module-level shutdown when detecting an AC power loss at the Button Switch box
*Manual module-level shutdown with the Button Switch when emergency occurs
Each rapid shutdown monitoring device has 3 channels and each channel can connect up to 4 PV strings.
Users can check the operation status of each module such as supply voltage, working temperature, device status, etc., which assists in fault detection and ensures security.
Safety is further guaranteed by pressing the Emergency Stop Button on the enclosure to achieve manual shutdown in an emergency.
Select the installation place for your Rapid Shutdown Device (RSD), opting for either horizontal or vertical positioning based on your preference.
Prioritize safety by ensuring the power line is deactivated and wearing Personal Protective Equipment (PPE) with insulation.
When connecting the RSD input and output, integrate the Equipment Grounding Conductor (EGC) from the array into the inverter to establish a connection for the inverter’s ground fault protection.
Identify the “Input” markings on the RSD’s side and connect the corresponding wires to the PV array, ensuring the positive end links to the +RSD input wire and the negative end to the -RSD input wire.
Proceed to the output wires, connecting the RSD output wires to the inverter inputs, with the +RSD output wire linked to the positive DC input terminal and the -RSD output wire to the negative DC input terminal.
Proceed with the installation of the 24V power supply. Prior to this step, ensure the initial opening of the PV system AC disconnect switch and the PV breaker to confirm the disconnection of the inverter from the grid. It is imperative to observe that the power supply of the Rapid Shutdown Device (RSD) should be connected to either a 2-wire 100-240VAC line-to-line or a 3-wire 200-480VAC line-to-line inverter output.
For multiple RSD installations, replicate the wiring process to connect the additional RSD control circuit to the corresponding output position on the power supply.
Within a ten-foot perimeter of the PV array, adhere to NEC 690.12 rapid shutdown requirements, reducing DC voltage to no more than 30Vdc within 30 seconds.
Once the PV system is installed, conduct a thorough test of the RSD system, confirming that the inverter’s DC input drops to less than 30Vdc within 30 seconds after AC removal, indicating a successful RSD installation.
Choosing a trusted rapid shutdown device supplier safeguards compliance with global regulatory requirements, solidifying customer confidence through a commitment to excellence and long-term reliability in the solar energy sector.
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