Microinverter manufacturer Hoymiles Power Electronics Inc. is making its latest module-level Rapid Shutdown (RSD) solution for roof-mounted string PV systems available in the United States. Designed in compliance with National Electrical Code (NEC) 2017 and 2020, UL1741, and SunSpec RSD requirements, the Hoymiles HRSD system offers rapid shutdown functionality that can reduce the electrical voltage of solar panel systems to safe levels in less than 30 seconds after being initiated.
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Hoymiles rapid shutdown solution includes a Rapid Shutdown device (HRSD) and a Transmitter (or Transmitter Kit), forming a complete rapid shutdown system with an initiator and a string inverter. It comes in two options that grant 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.
The Hoymiles HRSD also boasts a lower minimum start-up voltage of only 8V.
Setting the Hoymiles HRSD system apart from other products available on the market is the feature to support a wide range of input currents that include 15A, 20A, and 25A, meaning that the system is 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 also provides cables with customizable lengths for customers with different needs.
The Hoymiles HRSD system can operate in temperatures ranging from -40 to +85°C, and supports a maximum system voltage of 1000V/1500V. It features SunSpec power-line communication (PLC).
“Our innovation and desire to improve solar energy systems don’t stop here. We are glad to announce that Hoymiles will introduce our RSD system loaded with monitoring features in Q3 2022, which is designed to help solar installers better evaluate their PV system’s performance and resolve faults more effectively,” said Steven Zhang, Product Director of Hoymiles.
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