Compact Cost-Effective Ring Main Unit

HXGN15-12 AC Metal-Enclosed Ring Main Unit

The HXGN15-12 is an AC high-voltage complete switchgear with a rated voltage of 12kV and a rated frequency of 50Hz. It is mainly used in three-phase AC ring networks, terminal distribution systems, and industrial electrical installations for power receiving, distribution, and protection. It is also suitable for installation in compact (prefabricated) substations.

This product complies with GB3906 “3–35kV AC Metal-Enclosed Switchgear”, GB/T11022 “Common Technical Requirements for High-Voltage Switchgear and Controlgear Standards”, IEC60298 “AC Metal-Enclosed Switchgear and Controlgear for Rated Voltages Above 1kV up to 52kV”, and IEC60694 “Common Specifications for High-Voltage Switchgear and Controlgear”. It is equipped with a complete “five-interlock” protection system.

Advantages & Features

• Fully Sealed SF₆ Gas Tank with Maintenance-Free Design
  The switchgear is equipped with the FLN36-12D SF₆ load break switch, featuring an integrated sealed gas tank for the main circuit. This design ensures stable insulation and arc-extinguishing performance while eliminating risks associated with contact oxidation and gas leakage. With a service life of up to 30 years without major overhaul or internal maintenance, it significantly reduces operating expenses, maintenance requirements, and downtime losses.

• Ultra-Compact Footprint for Space Optimization
  Adopting a lightweight and highly integrated structure, the cabinet has a standard width of only 650 mm. Compared with conventional XGN switchgear, it reduces installation space requirements by more than 35%, making it ideal for confined electrical rooms and compact package substations while helping minimize civil construction and equipment installation costs.

• Cost-Effective Standardized Design for Large-Scale Projects
  The switchgear utilizes a highly standardized architecture with extensive localization of components and mature mass-production processes. Standardized spare parts are readily available and interchangeable, reducing procurement and replacement costs. This enables shorter lead times and more efficient delivery for large-volume projects.

• Excellent Adaptability to Diverse Operating Conditions
  Designed for reliable operation in ambient temperatures ranging from –15°C to +40°C, the switchgear performs effectively in typical humid and dusty environments. It does not require specialized temperature- or humidity-controlled rooms, offering greater installation flexibility and lower infrastructure requirements.

Technical Parameters