Rapid Shutdown (RSD)
Rapid shutdown is a PV safety function that reduces voltage in controlled parts of a solar array after shutdown is initiated, according to applicable code and system design.
What does Rapid Shutdown (RSD) mean?
Rapid shutdown is a PV safety function that reduces voltage in controlled parts of a solar array after shutdown is initiated, according to applicable code and system design.
What should designers verify for rapid shutdown with Tigo TS4 products?
Rapid shutdown design is about reducing voltage in defined parts of a PV system after shutdown is initiated. The exact requirements depend on code edition, jurisdiction, equipment listing, system architecture, and manufacturer instructions, so published material should avoid treating one code phrase as universal.
Practical design considerations
- Confirm the applicable code edition and local authority having jurisdiction before making a compliance statement.
- Match the term to listed equipment and the manufacturer's installation instructions.
- Avoid broad safety claims unless the exact product, configuration, and source are known.
Why this matters for Tigo systems
for Tigo systems, this term is often connected to RSS Transmitter and compatible TS4 rapid shutdown devices. Use documented wording for code, certification, and compatibility statements.
Related Tigo resources
Related Tigo Support: For design, installation, commissioning, or troubleshooting details, see Design Essentials for Rapid Shutdown using TS4-F MLPE and FAQ - RSS Transmitter with Pure Signal Technology (PST).