Product Overview

The BSM6-12 fully enclosed inflatable switchgear features a modular unit design, allowing for flexible combinations tailored to various applications. It consists of two main categories: fixed-unit configurations and expandable units, effectively meeting the diverse needs of substations for compact, versatile switchgear solutions.

The BSM6-12 Fully Enclosed Gas-Insulated Switchgear is a completely sealed system, with all live components and switching mechanisms housed within a stainless steel enclosure. This design ensures that the entire switchgear remains unaffected by external environmental conditions, guaranteeing reliable operation, personal safety, and virtually maintenance-free performance. By opting for an expandable busbar system, users can achieve any desired configuration, enabling full modularity. The extended busbars feature safe insulation and shielding, further enhancing reliability and safety. Additionally, the BSM6-12 fully enclosed gas-insulated switchgear supports TV-based automation solutions, embodying the concept of intelligent switching while minimizing on-site installation and commissioning efforts.

The BSM6-12 fully enclosed inflatable switchgear is available in both a non-expandable standard configuration and an expandable standard configuration. Thanks to its combination of full and semi-modules, along with its inherent scalability, it offers exceptionally versatile flexibility.

The BSM6-12 fully enclosed inflatable switchgear complies with GB standards.

Designed for operation under indoor conditions (20°C) with a lifespan exceeding 30 years.

Structural Features

●BSM6-12 Fully Enclosed Gas-Insulated Switchgear Series uses SF6 gas as the arc-extinguishing and insulating medium.

●The switchgear features a fully sealed, fully insulated design; the busbars, switches, and live components are completely enclosed within a stainless steel housing.

●The cavity is filled with SF6 gas at 1.4 bar, achieving a protection rating of IP67. This ensures the entire switch device remains completely unaffected by external environmental conditions—and even in extreme scenarios like brief water immersion, the switch continues to operate reliably. Plus, the product requires no maintenance throughout its lifetime.

●The switchgear is equipped with a comprehensive "five-protection" interlocking system, effectively eliminating any risk of human error that could lead to operational failures involving personnel or equipment.

●All switchgear units are equipped with reliable safety pressure-relief channels, ensuring the personal safety of operators even in extreme situations.

●Switchgear is divided into two categories: fixed-unit assemblies and expandable-unit assemblies.

●Switchgear cabinets typically feature front-mounted incoming and outgoing lines, but can also be configured for side-outgoing lines or side extensions depending on the installation location.

● The cabinet features convenient installation dimensions and is suitable for spaces with limited room as well as environments with challenging conditions.

●The switchgear can be equipped with electric, remote-control, and monitoring devices according to the user's specific requirements.

Ordering Instructions (Please specify when placing your order)

1. Main circuit scheme number, purpose, single-line system diagram, arrangement drawing, and distribution room layout plan, etc.

2. Schematic diagram of the auxiliary circuit wiring and terminal arrangement diagram.

3. Model, specifications, and quantity of electrical components within the switchgear.

4. Requirements for control, measurement, and protection functions of switching equipment, as well as requirements for other interlocking and automatic devices.

5. If bus bridges are required to connect switchgear units or incoming feeder cabinets, please provide specific details such as the rated current-carrying capacity of the bus bridge, its span length, and the height from the ground.

6. When attachments or spare parts are needed, please specify the type and quantity required.

7. If switchgear is to be used in special environmental conditions, please provide detailed specifications when placing your order.

Performance metrics

The absolute pressure of SF6 gas is 1.4 bar at temperatures below 20°C.

The annual gas leakage rate is 0.2% per year.

Protection rating IP67; gas chamber stainless steel thickness: 3.0 mm.

Normal operating environment conditions: Maximum temperature 40°C, minimum temperature -40°C; maximum average relative humidity ≤95%, and altitude ≤2,500 meters.

Busbars: 400 mm Cu busbar inside the switchgear, and a 150 mm² Cu grounding busbar in the switchgear.

Color: Front panel of the switchgear cabinet in RAL 7012, side panels and front cover plate of the cable compartment in RAL 7035.

Meet the standards: GBT11022, GB3906, GB1985, GB16926, GB3804-1, GB1984, GB3309, IEC60056, IEC60129, IEC60256, IEC60298, IEC60420, IEC60694

Technical specifications

Note: (1) Depends on the fuse's current rating

Non-expandable standard module

●Each module of the BSM6-12 switchgear features the following configuration:

1. Capacitive Voltage Indicator for Incoming Conduit

2. Each gas chamber is equipped with an SF6 density monitoring pressure gauge.

3. Lifting lugs for hoisting

4. Operating Handle

● Optional features

1. Electric operating mechanism

2. Cable Short-Circuit and Ground Fault Indicator

3. Cable Current Transformers and Meters

4. Remote Monitoring and Contact

Pressure indicator

Extended casing

T-shaped cable connector

Elbow-type

Special-shaped Hybrid Busbar

Blue line marks the location: incoming conduit

Blue line indicates the location: outgoing busbar connection plate