Hoymiles launches new module-level Rapid Shutdown system

By Hoymiles
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Hoymiles has announced that its latest module-level Rapid Shutdown (RSD) solution for roof-mounted string photovoltaic systems is now available in the United States, Thailand and the Greater China region.

Designed in compliance with National Electrical Code (NEC) 2017/2020, UL1741, and SunSpec RSD requirements, the Hoymiles HRSD system meets fire safety standards and offers industry-leading rapid shutdown functionality that can reduce the electrical voltage of solar panel systems to safe levels in less than 30 seconds after initiation, giving both first responders and customers an all-round safety guarantee in case of emergencies.

The RSD solution includes a rapid shutdown device (HRSD) and transmitter (or transmitter kit), forming a complete system with an initiator and string inverter. It comes in two options which give the RSD system greater versatility, with HRSD-1C connecting to one PV module and HRSD-2C connecting to two, both supporting an input operating voltage range from 8V to 80V. Built to enhance PV system and module operating efficiencies, the Hoymiles HRSD boasts a low minimum start-up voltage of only 8V.

Setting the HRSD system apart from other products available on the market is a feature which supports a wide range of input currents, including 15A, 20A and 25A, meaning that the system is fully compatible with mainstream 166/182/210 solar panels. It is equipped with a 0.15/0.45-meter input cable and a 1.2/2.4-meter output cable, and Hoymiles can also supply cables of customizable lengths for customers with different needs.

The system can operate safely in temperatures ranging from -40 to +85°C, and supports a maximum system voltage of 1000V/1500V. It features SunSpec™ power-line communication (PLC), streamlining the installation process and freeing users from extra network setups.

“Against the backdrop of global decarbonization, solar energy has become a reliable and cost-effective renewable source for commercial buildings. Ensuring the safety of PV systems has been among the top priorities for governments across the globe, which have issued a series of policies requiring manufacturers to equip rooftop solar arrays with a safety mechanism that can shut down malfunctional devices should emergencies occur. In order to meet ever-evolving RSD requirements, Hoymiles has leveraged its world-leading R&D capacity and expertise in the solar industry to develop one of the safest and most reliable RSD solutions for our customers,” commented Steven Zhang, the company’s Product Director.

“However, our innovation and commitment to enhance solar energy systems doesn’t stop here. We are delighted to announce that Hoymiles will also release an RSD system equipped with an array of monitoring features in Q3 2022, a product which has been designed to help solar installers better evaluate their PV system’s performance and resolve faults more effectively,” Zhang added.

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