APsystems announced the new Chint three-phase 25-kW 208 VAC inverter is now listed on Sunspec’s Photovoltaic Rapid Shutdown System (PVRSS) certification to the UL 1741 standard. That brings the total of Chint inverter models tested by CSA and certified to be used with APsmart’s PVRSS solutions to five.
Joining Chint are five other unique inverter brands that have been added to the APsmart PVRSS certified compatibility list, including Delta, Fronius, SolaX, Solis and Solectria. More inverter manufacturers and models continue to be tested and added to the ever-growing list of compatible inverters with APsmart’s PVRSS.
The new 25-kW Chint three-phase string inverter is designed for rooftop and carport PV applications. This compact unit is a high-performance, advanced and reliable inverter designed specifically for the North American environment and grid. This product ships with a Rapid Shutdown wire-box, fully integrated and separable with touch-safe fusing, monitoring and AC and DC disconnect switches. The integrated PLC transmitter in the Rapid Shutdown wire-box enables PVRSS certified module-level rapid shutdown when used with the APsmart RSD products.
The compatibility of these inverters and APsmart’s Rapid Shutdown System (PVRSS) enables APsmart to offer a more reliable, flexible, safe and cost-effective solution to both residential and commercial systems. The APsmart PVRSS has been certified by CSA to meet the UL 1741 standard for electrical safety and is fully compliant with the National Electric Code (NEC) 2014, 2017, and 2020 690.12 Rapid Shutdown requirements.
News item from APsmart
“The APsmart PVRSS has been certified by CSA to meet the UL 1741 standard for electrical safety and is fully compliant with the National Electric Code (NEC) 2014, 2017, and 2020 690.12 Rapid Shutdown requirements.”
Yeah, 2020 690.12 does seem to be different than the 2017 RSD requirement. NOW there’s this call for a PLC link from the inverter to the roof mount RSD devices. The market place will most likely resolve this ‘additional’ shutdown requirement. Companies like SolarEdge and Enphase could incorporate RSD and PLC into the converter or micro-inverter modules as part of the system. Adders in the ‘name’ of safety is starting to dilute value to add cost and complexity to a solar PV system. So, it’s not clear, does the TESLA solar PV roof tile have this RSD and PLC capability built into each tile that’s nailed down to the roof? Unless there’s a tile 4.0 with RSD built in, the roof tile option is non 2020 690.12 compliant.