Fire protection device for photovoltaic energy storage cabin

What is the purpose of a ground-mounted PV system?

A ground-mounted PV system's purpose is to reduce shock hazards for firefighters. Ground-mounted PV systems and circuits from those systems that enter a building are not required to comply with section 690.12 if the sole purpose of that building is to contain PV equipment.

What is a PV hazard control system?

According to the Code and a UL standard, a PV hazard control system is a listed PV system that can be made essentially hazard-free to fire service personnel when placed into a hazard-free state by a PV rapid shutdown system initiator.

Are photovoltaic power systems NFPA 70 compliant?

Photovoltaic (PV) electrical power systems are required to have additional levels of safety equipment over and above what is found in the typical NFPA 70 (National Electrical Code) dwelling. The National Electrical Code ( NEC – NFPA 70) is a book of requirements dealing with the safe installation of electrical equipment and systems.

Are ground-mounted PV systems required to comply with section 690-12?

Ground-mounted PV systems and circuits from those systems are exempt from complying with section 690.12 if the sole purpose of the building housing them is to contain PV equipment. Several initiation devices are defined and allowed to make the use of this system readily available to first responders, including firefighters.

Does a PV system need an arc-fault circuit interrupter?

According to NEC Section 690.11, a PV system with an operating voltage of 80 V dc or greater between any two conductors shall be protected with a listed arc-fault circuit interrupter or other equivalent equipment.

What are the safety requirements for a PV array?

According to Section 690.12, PV arrays with no exposed wiring methods or conductive parts and installed more than 2.5 m (8 ft) from exposed grounded conductive parts or ground meet the safety requirements. [690.12 (B) (2) (3)] There is no required control of conductors within the array boundary.