What is UL 60947-8-9:2020?

UL 60947-8-9:2020 is a technical standard for low-voltage switchgear and controlgear - Part 8-9: Control circuit devices and switching elements - Protective disconnectors (PDs) used in photovoltaic installations. This standard was developed by Underwriters Laboratories (UL), an independent global safety science company.

of UL 60947-8-9:2020

This technical standard defines the requirements for protective disconnectors (PDs) used in photovoltaic (PV) installations to ensure the safe operation of electrical systems. PDs are essential components for isolating the PV system from the power grid or other sources during maintenance, testing, and emergency situations.

The standard covers various aspects of PDs, including their design, testing, installation, and operational characteristics. It provides guidelines for ensuring the protection of both equipment and personnel involved in the installation and maintenance process of PV systems.

Key Features and Benefits

UL 60947-8-9:2020 includes several key features and benefits:

Safety: The standard focuses on ensuring the safety of PV systems by providing clear guidelines for the design and construction of PDs. This helps prevent electrical accidents, fires, and damage to equipment.

Reliability: By complying with the standard, manufacturers can produce PDs that meet specific quality and performance criteria. This ensures reliable and consistent operation of control circuit devices and switching elements within PV installations.

Ease of Installation: The standard provides guidelines for the proper installation and configuration of PDs, making it easier for installers and electricians to incorporate these devices into PV systems. This results in reduced installation time and effort.

Compliance: Adhering to UL 60947-8-9:2020 helps manufacturers, installers, and end-users meet relevant regulatory requirements and industry standards. Compliance with the standard demonstrates a commitment to safety and quality in PV installations.

Conclusion

UL 60947-8-9:2020 plays a crucial role in ensuring the safety, reliability, and proper functioning of protective disconnectors (PDs) used in photovoltaic installations. Through its comprehensive guidelines and requirements, this technical standard helps protect personnel and equipment from potential hazards and contributes to the overall quality of PV systems.

Manufacturers, installers, and end-users should familiarize themselves with the provisions of UL 60947-8-9:2020 to ensure maximum system safety and compliance with applicable regulations.