Delta inverters are now certified for rapid shutdown via Tigo Energy

Delta inverters

Delta Group inverters are now UL certified with Tigo’s rapid system shutdown (RSS) solutions: TS4-F (Fire Safety), TS4-O (Optimization), and TS4-L (Long String). Tigo is currently shipping with Delta and more tier one certified inverter manufacturing partners throughout the U.S.

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This UL certification is part of Tigo’s multivendor initiative providing customers with the advantages of reliable, safe, and cost-effective solutions. The use of Tigo smart modules and high efficiency inverters allows design flexibility for installers to comply with National Electric Code (NEC) 2017 690.12 RSS regulations. Tigo has also been internationally recognized as the only module-level power electronic vendor with UL-certified RSS with PV module manufacturers.

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The following Delta inverters are newly UL-listed as a Rapid Shutdown System with Tigo’s TS4 units:

TS4-F (Fire Safety). This is the most cost-effective RSS solution with SunSpec-defined power-line communication.

  • M36U
  • M42U
  • M60U
  • M80U

TS4-O (Optimization) and TS4-L (Long Strings). These are the only UL-certified multivendor RSS in the U.S. solar market also include additional features like optimization and long string designs.

  • M4-TL-US
  • M5-TL-US
  • M6-TL-US
  • M8-TL-US

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