12kV 15kV 17.5kV 24kV SF₆ gas-free ring main unit/switchboard panel Original Manufacturer

Customer benefits：

Compliant with IEC standards and F-gas regulation

•  Compliant with IEC standards and with the EU F-gas regulation (EU) 2024/573.

•  High ratings up to 2500A. Single busbar modular and compact lowpressure design, based on natural origin gases (SF6 free).

•  Loss of service continuity LSC 2A  and partition class PM*.

Reliable and flexible 

• Compact and modular design for space optimization. 

• Very low maintenance required as all high voltage parts are permanently sealed in a gas tank and protected from soiling, humidity, foreign bodies, and other environmental influences.

• Due to the low-pressure design,  the switchgear can remain in service  up to the point of repair, even in the unlikely event of a leak. 

• The switchgear can be enabled with monitoring and diagnostics (e.g., temperature, gas, partial discharge)  to track asset health. Automation and control features based on current and voltage sensors and IEC 61850 protocol allow for customization during the manufacturing phase and varying loads during operations.

• Well known and proven vacuum circuit breaker type VD4X. 

• Outer cone cable termination system.

Safety 

•  High level of operator safety with front, lateral and rear arc protection,  certified AFL(R) 40kA 1s (according to IEC 62271-200). 

• Plug-in busbar technology and the factory-assembled pressure relief duct allows for safe, quick and easy installation at site. 

• With the switchgear diagram and operation controls on the front panel, no opening of the doors  is required for manual operation making the switchgear operator friendly.

•  Wide range of monitoring and diagnostic features for safe and reliable operations. All switching devices are motor-operated and  can be controlled remotely.

•  Mechanical and electrical interlocks prevent incorrect operation of the switchgear panels.

Technical parameters：

The voltage classes of some of these eco-friendly switchgears include 6kV, 6.3kV, 6.6kV, 6.9kV, 7.2kV, 10kV, 10.5kV, 11kV, 11.5kV, 12kV, 13.2kV, 13.8kV, 14.5kV, 14.4kV, 15kV, 15.5kV, 15.6kV, 17.5kV, 20kV, 21.9kV, 22kV, 24kV, 30kV, 33kV, 33.5kV, 34.5kV, 35kV, 36kV, 38kV, 38.5kV, 40.5kV, 44kV, 45kV, 46kV, 66kV and 69kV. and customization is available.

Structure diagram：