Laserfiche WebLink
Technical Notification <br />Title SunVault™ RPO Switch and System Disconnecting Means, 651031 RevA <br />Date July 12, 2023 <br />Authors SunVault Applications Engineering <br />Application SunVault Storage System <br />Overview <br />This Tech Note is intended for use by designers, and individuals or organizations <br />responsible for permitting and inspecting SunPower SunVault™ Storage Systems. It <br />provides responsive descriptions of how the following National Electrical Code (NEC) <br />(NFPA 70) requirements are met for SunVault: <br />• PV system rapid shutdown (RSD) <br />• Emergency shutdown (ESD) <br />• Disconnecting means <br />2023 NEC Article 690.12 Rapid Shutdown of Solar Systems on Buildings <br />® <br />Article 690.12 requires an RSD function for all solar system circuits installed on <br />buildings. The RSD function reduces the shock hazard for firefighters, as these first <br />responders must contend with elements of a solar system that remain energized after <br />the service disconnect is turned OFF (opened). The solar system RSD requirement <br />reduces the potential for shock to a person within 30 seconds of activation of the solar <br />system shutdown. In accordance with 690.12 (A) through (D), an initiation device shall <br />be provided to initiate the solar system’s rapid shutdown function. <br />A permanent label must be located at the service equipment location and must indicate <br />the location of the RSD initiation device(s). This label must include a simple diagram of <br />the building with a roof, and include the following words [690.12(D)]: <br />SOLAR PV SYSTEM IS EQUIPPED WITH RAPID SHUTDOWN. <br />TURN THE RAPID SHUTDOWN SWITCH TO THE “OFF” POSITION TO SHUT DOWN. <br />PV SYSTEM AND REDUCE SHOCK HAZARD IN ARRAY. <br />For SunVault systems that have backup and non-backup side solar systems, a detailed <br />plan view diagram of the roof must be placed at the service equipment and include a <br />dotted line around the specific area where each RSD device shuts down, upon initiation <br />[690.12(D)(1)]. <br />For these projects, the RSD initiation device for the ACPV circuits located at the Hub+ <br />generation pan (backup side) can be one of the following: <br />1402 W Meriday Ln - <br />201816051/10/2024