Gis Gas Insulated Switchgear

Gis Gas Insulated Switchgear

The SF6 gis gas insulated switchgear independently developed and produced by our company has passed the type test of the National High Voltage Electrical Apparatus Test Center. The products are widely used in the 10kV/6kV power transmission and distribution system of the State Grid, and are the products of choice for the transformation and distribution systems of various urban and rural users.

The switch cabinet is a modular unit mode, which can be combined according to different purposes. It can be composed of load switch units, load switch fuse combination electrical units, vacuum circuit breaker units, and bus entry units, which can meet the requirements of various substations for compact switch cabinets. The need for flexible use.

The SF6 gas insulated ring main unit is a completely sealed system, and its live parts and switches are enclosed in a stainless steel body. The entire switchgear is not affected by external environmental conditions, thus ensuring operational reliability and personal safety. By choosing an expandable bus, any combination can be achieved to achieve full modularity. The safety insulation and shielding of the extended bus bar ensure reliability and safety.

It adopts a series of advanced technologies and materials, has excellent electrical and mechanical properties, is not affected by the environment and climate, is small in size, easy to install, easy to operate, does not require maintenance, and has flexible combinations. The clear and intuitive design ensures simple and direct operation. The feeder wiring capacity is large, suitable for various wiring systems.

Air insulated ring network cabinet - expandable SF6 ring network cabinet, can be freely combined, has a small size, is safe and reliable, and does not require maintenance.

SF6 gas is used as insulation and arc extinguishing medium, and the constant magnetic field arc rotation method ensures strong arc extinguishing ability, good breaking performance, low overvoltage, long electrical life, and maintenance free arc extinguishing chamber.

The load switch - fuse combination electrical appliance has a three position function, perfect sealing, reliable operating mechanism and locking.

The grounding switch has a short-circuit closing function.

The cabinet body is formed by stamping and bending with aluminum coated zinc sheet, which is sturdy and reliable.

96 hour salt spray test conducted by the institution.

The insulated busbar of the main busbar shall be separated by metal partitions between cabinets and shall not generate eddy currents. Both ends of the busbar shall be sealed with insulation sealing.

Measures to prevent electric field concentration and partial discharge shall be taken at the junction of main bus.

The fuse grading cover ensures the insulation performance of the switch cabinet, without electric field concentration and partial discharge.

The ring network cabinet includes the following intervals: switch interval, bus interval, cable interval, mechanism interval, and control protection interval

1) Load switch

Load switches have a certain on-load breaking capacity, which means they can be energized to open and close under light loads, but they cannot be operated frequently. Generally, load switches are equipped with fuses and have stronger arc extinguishing ability than isolation switches.

2) Isolation switch

When the circuit breaker disconnects the circuit, the disconnection of the isolation switch allows for a clear separation of the live and dead parts, serving as an auxiliary switch.

Due to the lack of intuitive external indicators for the contact position of circuit breakers, and in some cases, it cannot be guaranteed that its indication is consistent with the position of the contact, it is necessary to use isolation switches to clearly separate the energized and non energized parts.

In addition, the isolation switch has a certain natural arc extinguishing ability, which is commonly used for the input and disconnection of low current equipment such as voltage transformers and lightning arresters, as well as the connection between a circuit breaker and several devices, making the switching of the circuit breaker through the isolation switch more flexible and convenient.

3) Circuit breaker

A switching device that can close, carry, and disconnect the current under normal circuit conditions, and can close, carry, and disconnect the current under abnormal circuit conditions within a specified time.

4) Grounding switch

Mainly used for equipment maintenance, in order to prevent sudden power calls during the maintenance process, both ends of the maintenance equipment must be grounded.

The grounding switch of the high-voltage distribution cabinet is generally grounded on the output load side. When we repair the load side of the high-voltage distribution cabinet (such as tightening bolts, disassembling cables, etc.), we need to disconnect the switch and close the grounding switch of the distribution cabinet at the same time. This can prevent sudden power calls from causing electric shock accidents, and also discharge the remaining charge, which is conducive to maintenance safety.

Environmental Conditions

(1) Suitable Altitude: ≤2000mSuitable

(2) Temperature: -40℃ ~ +55℃Relative

(#) Humidity: Daily mean ≤95%, monthly mean ≤90%

(4) Gradation of Earthquake Damage: ≤ Level 8

Product main features

◆Operational safety

Through the following security measures, we can provide users with special security guarantees:

1. Integrated three-station load switch.

2. The circuit breaker adopts load switch instead of isolating switch, which is safer and more reliable.

3. The fully enclosed design on the primary side provides protection against accidental contact.

4. Mechanical interlock that meets the requirements of five preventions.

5. The live display can provide live indication of incoming and outgoing lines

◆Reliable operation

1. Fully enclosed design, all 10KV switches and busbar charged bodies are sealed in a box welded with 3mm stainless steel plates; equipped with silicon rubber cable plugs to achieve full insulation and full sealing of the cable head, so as not to dust, moisture, small animals and other external environmental impact.

2. The spring energy storage operating mechanism can be operated manually or electrically.

3. The panel analog line diagram provides switch position indication.

4. The cabinet is made of galvanized sheet, and the surface is electrostatic sprayed to enhance corrosion resistance.

5. The pressure gauge monitors the safe pressure range of SF6 gas in the box.

◆Economy

1. Maintenance-free

2. Highly reliable

3. The service life can reach 30 years

PRODUCT PHOTO

FACTORY WORKSHOP

Certifications

PACKING&DELIVERY

Our advantage!

1. One-stop service

2. International production standards

3. The best price in all markets.

4. Strong after-sale protection

5. Strong teamwork ability

6. With 15 years of rich experience

Send your request to us,we will contact you as soon as possible.

FAQ

Q5 : Is OEM/ODM available?

A: Yes, it is! Our products can be Customized. We have design and engineer teams,we can customize products according to customers' drawing or requirements.

Q6 : You are manufacturer or trading company?
A: We are factory, As a 100% professional manufacturer with 20 year's manufacturer experience, we could produce products according to customers' requirements and we could also control the quality of products 100%.

Q7 : Can the price be negotiated?

A: Yes, the price is negotiable. It can be changed according to your quantity or package

Q8 : How about inspection?

A: We have the whole inspection system from raw material to end products include temperature rise test,salt spraying test conductor type test,mechanical life test.

Q9 : What is payment terms?

A: T.T, Paypal,Western Union,Alibaba trade assurance and L/C is acceptable. 30% T/T in advance ,70% balance before shipment.

Q10 : What is the service offered by company?

A: We have the professional engineer team which can design and develop the mold to arrive different customer requirement.

We also have the sales team to offer good service from pre-sale to after-sale.

This product is usually customized.

We are a manufacturer and have a professional technical department that can design and provide solutions according to customer needs.

Please contact our sales personnel to obtain design drawings

Here are our customer examples for your reference

Kazakhstan Customers

IF NEED MORE DETAILES,PLEASE FEEL FREE YO CONTACT US

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