What are Safety Benefits of Module-Level Shutdown Systems?

What is Module-Level Shutdown?

Module-level shutdown systems use a centralized control unit to individually disconnect power to each solar module, typically within 20 milliseconds, and can be activated remotely or automatically in response to a fault or accident. This rapid shutdown capability provides a significant safety benefit by reducing the risk of electrical shock and fire, especially in situations where access to the solar array is restricted or where utility workers are present.

Benefits of Module-Level Shutdown

The benefits of module-level shutdown systems are numerous and significant. By quickly disconnecting power to individual solar modules, these systems can prevent electrical shock and fire in the event of a fault or accident. According to the National Fire Protection Association (NFPA), module-level shutdown systems can reduce the risk of electrical fires by up to 90%. Additionally, these systems can protect utility workers and emergency responders by providing a safe working environment and reducing the risk of electrocution. In situations where access to the solar array is restricted, module-level shutdown systems can also prevent accidental activation of the solar array, which can cause electrical shock or fire.