Applied to indoor medium-voltage primary power distribution applications of 40.5 kV and below, suitable for indoor installation.

Medium-voltage gas-insulated metal-enclosed switchgear and control equipment are based on a comprehensive and innovative design concept. All primary energized conductors are completely enclosed in high-voltage compartments filled with SF6 insulating gas. The circuit breaker compartment and busbar compartment are independent of each other, and the compartment shells are constructed from stainless steel plates using advanced robotic welding. The high-voltage energized parts installed inside are completely unaffected by external environmental conditions. Personnel cannot access energized parts, ensuring operational safety.

The main switch of the switchgear uses renowned ABB/GE vacuum circuit breakers, known for their stable performance and long service life, meeting all requirements of single and double busbar systems. Suitable for harsh coastal and inland environmental conditions, it is widely used in subways, power grids, oil and petrochemicals, public utilities, real estate, and other fields, meeting relevant ETL, UL, CE, CSA, and IEC certification standards.

Furthermore, gas-insulated switchgear offers flexible configuration options to meet different user needs. For example, manual or electric operation, circuit breakers or load switches can be selected. Available for wall mounting and freestanding installation.

Medium-voltage gas-insulated ring main units and compact switchgear

Applications in secondary power distribution systems, 6 kV to 40.5 kV medium-voltage gas-insulated ring main units and compact switchgear

Including traditional SF6 gas insulation and environmentally friendly dry air insulation, offering advantages such as high reliability, high safety, compact structure, and maintenance-free operation.

Ring main units suitable for secondary power distribution networks, with various fixed configurations to meet the needs of most power distribution networks.

For 6 kV to 40.5 kV power distribution networks. Metal-enclosed compact switchgear is flexibly expandable and can be combined in fully modular or semi-modular configurations. The new intelligent solution is based on ABB's advanced Safe switchgear platform, integrating various digital applications to form a complete solution, accurately sensing the ring main unit's status. Utilizing ABB Ability™ cloud technology, it provides equipment asset health management and operation and maintenance recommendations, ensuring power supply safety, improving operational continuity and reliability, extending maintenance cycles, and reducing maintenance costs.

Suitable for: Compact secondary substations, light industry, wind farms, residential buildings, hotels and shopping malls, mines, airports, railways, and subways.

High safety and reliability: Fully insulated and sealed structure; all live parts are sealed within the gas chamber, inaccessible and unaffected by the operating environment.

Flexible application: Each incoming and outgoing line unit can share a gas chamber or have an independent gas chamber; all functional units can be flexibly configured, and the cabinet dimensions are the same.

Compact structure: 12/24 kV functional units are 325 mm wide, 40.5 kV is 420 mm wide.

Intelligent: Integrates multiple digital applications to form a complete solution, accurately sensing the status of the ring main unit.

Meets SGCC standardized design requirements; cabinet types include V-type cabinets with upper-mounted vacuum circuit breakers (isolation grounding switch on the busbar side), V-type cabinets with lower-mounted vacuum circuit breakers (isolation grounding switch on the cable side), PTC cabinets with isolation grounding switches, etc., meeting more user needs.

Key Features:

· 12-24 kV, 630 A, SF6 insulated ring main units and compact switchgear

· 36-40.5 kV, 630 A, SF6 insulated ring main units and compact switchgear

· 12 kV, 630 A, dry air insulated ring main units and compact switchgear

· Mature and flexible configuration options, easy installation, and rapid deployment of digital ring main units

· Detailed operation and maintenance recommendations based on years of design, manufacturing, and operation and maintenance experience

· Meets ETL, UL, CE, CSA, and IEC certification standards.