the first manufacturers to announce a product based on the standard.
SUNSPEC – THE STANDARD FOR CUSTOMER CHOICE
Fronius believes that the easiest and best plug-and-play solution for the National Electrical Code’s module-level shutdown requirement is based on an industry standard with Power Line Communication (PLC).
The SunSpec Certified program for Rapid Shutdown (RSD) verifies compliance to the “SunSpec Communication Signal for Rapid Shutdown Functional Specification” to meet the requirement established by the National Electrical Code (NEC). Twenty-nine members of the SunSpec Alliance defined an open industry standard for communication between modules, inverters, string combiners, and other devices to support module level rapid shutdown requirements. This multi-vendor industry standard went through 34 iterations and was published in September of 2017.