Learn how your solar PV modules can be retrofitted to make them NEC compliant for rapid shutdown

by Brianna Crandall — November 14, 2018 — Silicon Valley-based Tigo, pioneer of the smart modular Flex MLPE (flexible module-level power electronics) platform operating worldwide, just announced its new RSS (Rapid Shutdown System) Transmitter to complete its cost-effective rapid shutdown system architecture for solar photovoltaic (PV) modules when paired with TS4-F (Fire Safety). Tigo’s RSS Transmitter accompanies the UL-certified TS4-F (integrated) and TS4-R-F (retrofitted/add-on) solutions. See the link below for today’s webinar on the new product.

Square white device with black cord and circle

The new RSS (Rapid Shutdown System) Transmitter completes Tigo’s cost-effective rapid shutdown system architecture for solar PV modules when paired with TS4-F (Fire Safety). Image courtesy Tigo

The RSS Transmitter sends a signal to the TS4-F units to keep their PV modules connected while powered on and supplying energy. TS4-F units automatically enter rapid shutdown mode when the RSS Transmitter is switched off and resume energy production when power is restored to the RSS Transmitter. This solution complies with US National Electric Code (NEC) article 690.12 specifications for 2014 and 2017 to improve electrical and fire safety hazards for first responders, and supports the SunSpec-defined signaling for rapid shutdown with power-line communication (PLC). The TS4-F units and RSS Transmitter require no commissioning process.

Highlights of the RSS Transmitter include:

  • Meets NEC 2017 690.12 requirements
  • Module-level deactivation with TS4-F and TS4-R-F
  • Automatic or manual shutdown with TS4-F and TS4-R-F
  • Supports SunSpec signaling
  • UL-certified
  • Easy installation
  • No required commissioning process
  • Compatible and certified with many residential and commercial inverters from multiple suppliers
  • Available for integrated and retrofitted/add-on PV installations

Zvi Alon, CEO at Tigo, stated:

Providing a UL-certified transmitter to complete our second TS4 System Architecture solution for rapid shutdown has been Tigo’s largest contribution to safer solar. Tigo’s RSS Transmitter is the only SunSpec keep-alive device for rapid shutdown with PLC in the solar market today. We are excited to be shipping and certifying with a large number of tier one inverter manufacturing partners by the end of the year.

Tigo and its many partners contributed expertise to solar standards with SunSpec Alliance. SMA, Fronius, ABB, Chint, HiQ Solar, Ingeteam, Kaco, Sungrow, and Yaskawa Solectria and others are among UL-listed PV inverter manufacturers that will be compatible with Tigo’s RSS solutions. Tigo continues to expand its compliant inverter portfolio with many partner brands for its customers.

Tigo is currently taking orders for the RSS Transmitter — available as a Kit, DIN Rail, or PCBA. For price and delivery of the RSS Transmitter, visit the Tigo website. For price and delivery of the TS4-F products, consult your preferred solar PV supplier. To learn more, join Tigo’s live RSS Webinar on November 14 at 10 am PT.