SF6 Gas Insulated Ring Main Unit

SF6 gas insulated ring main unit: SF6 gas is used as arc extinguishing and insulating medium; the switch cabinet is a fully sealed, fully insulated structure; the busbar, switch and live parts are completely enclosed in a stainless steel casing. The cavity is filled with SF6 gas, and the protection level reaches IP67; the entire switchgear is completely unaffected by external environmental conditions, and the normal operation of the switch can be ensured even in extreme cases (such as short-term water immersion), and the product is free of maintenance for life. The switch cabinet has a complete "five-proof" interlocking device, which completely eliminates personnel and equipment failures caused by improper human operation. All switch cabinets have reliable and safe pressure relief channels, which can ensure the personal safety of operators even in extreme cases. The switch cabinet is divided into two types: fixed unit combination and expandable unit combination. The switch cabinet usually enters and exits from the front, and can also realize side outlet or side expansion according to different installation positions; the cabinet is small in size and easy to install, which can be suitable for use in places with small space and harsh environment; the switch cabinet can be equipped with electrical, remote control and monitoring devices according to the different needs of users.

GB/T3804 3.6kV~40.5kV high voltage AC load switch

GB/T1984 high voltage AC circuit breaker

GB/T16926 high voltage AC load switch-fuse combination device

GB/T1985 high voltage AC disconnector and earthing switch

GB/T3906 3.6kV~40.5kV AC metal-enclosed switchgear and control equipment

GB/T11022 Common technical requirements for high voltage switchgear and control equipment standards

GB/T4208 Enclosure protection grade (IP code)

DL/T404 3.6kV~40.5kV AC metal-enclosed switchgear and control equipment

GB/T311.1 Insulation coordination Part 1: Definition, principles and planning

12kV ring network cabinet (box) standardized design and customization plan (2022 version)

Main Technical Parameters

Structure And Mounting Dimensions

Working Environment：

Timetric ElectricSF6 gas insulated ring main unit usage environment：

1.Ambient temperature: -40ºC~+45ºC;

2.Relative humidity: daily mean not over 95%, monthly mean not over 90%;

3.Altitude: not exceed 4000m;

4.The installation site should be free of fire, explosive danger, serious pollution, chemical corrosion or severe vibration.

Advantages and features of switchgear

Timetric ElectricSF6 gas insulated ring main unit include the following aspects:

1. Safe and reliable: The inflatable cabinet uses high-quality SF6 gas, which has strong negative charge and excellent insulation performance. In a uniform electric field, the insulation strength is about 2 to 3 times that of air, and it is non-toxic and odorless. It is also non-flammable, has excellent arc extinguishing performance and cooling performance, so the load switch can quickly and reliably extinguish the arc after cutting off the current.

2. Small size. The use of SF6 gas with excellent insulation performance makes the inflatable cabinet smaller, lighter, and more compact on the premise of performance, safety, and reliability, which greatly saves space for users.

3. Advanced and flexible. The inflatable cabinet adopts internationally advanced design concepts and production test methods, making the entire series of products simple in structure, flexible in operation, and reliable in interlocking. In addition, it uses advanced sensing technology and the latest microcomputer protection devices. A variety of technical solutions can be provided to meet various user needs.

4. Fully modular design, fully enclosed structure, and comprehensive expansion. The inflatable cabinet is a new generation of compact modular switchgear. The gas box is welded from high-quality 3mm stainless steel plates, and all high-voltage live parts (such as vacuum switches, load switches, and busbars) are sealed in a box filled with SF6 gas. The entire series of products has a modular structure, such as unit type and universal box type. Each module has its own function and a separate metal shell, which can be expanded at will.

5. All-weather adaptability. The gas-filled cabinet adopts a closed structure, and the primary conductive system is completely independent of the working environment with SF6 as the medium, and is not affected by the external environment (such as: condensation, pollution, salt spray, small animals and chemicals, etc.). It is truly maintenance-free, suitable for various harsh places, and has strong anti-immersion ability. The air box and fuse box have reached the protection level of IP67. Provide our users with a reliable power supply system and economical operation and maintenance costs.

Product Real Shot

FAQ

Can your company customize products according to my requirements?

Yes, we can customize products according to customer requirements. Generally speaking, customers only need to provide: Circuit layout, voltage, current, etc.

What is your fastest delivery time?

Normally, we accept customer inquiries. After the switch cabinet technical parameters are connected, it takes 1-2 days to issue a price list and communicate with customers about the production and delivery time based on the actual situation.

How is your after-sales service?

We support a 1-year warranty. The normal quotation does not include on-site after-sales service. Free online communication and guidance are available.