In the future, we will consistently provide customers with first-class high voltage VCB, Dry type distribution transformers, AC Metal-enclosed Switchgears and services. With our high-level talents, scientific management, excellent teams, and attentive service, our products are favored by domestic and foreign customers. Our company will continue to focus on the development of the industry. We will actively promote the development of the industry with a forward-looking vision and global vision, and contribute to the revitalization of national industrial brands. The development of the Internet has opened up a wide space and freedom for our company's business model innovation. Continuous innovation is the inherent essence of e-commerce mode. Our company has established a set of scientific, rigorous and complete quality control and internal management system to strengthen the company's brand effect.

High Voltage Electrical SF6 Ring Main Unit

High voltage electrical SF6 ring main unit and SF6 insulated compact switch cabinet are used in medium voltage distribution network. They provided a sealed stainless steel tank containing all live parts and switch functions. The transformer is protected by a switch fuse combination or a vacuum circuit breaker.

The SF6 insulated ring main body can be configured as 2, 3 or 4 way units in standard configuration, and additional equipment can be provided according to customer requirements.

SF6 insulated compact switchgear has unique flexibility due to its scalability and possible combinations of fully modular and semi-modular configurations. A SF6 tank can contain up to 5 modules.

These units have been delivered from the factory and can be installed. Before dispatch, perform routine tests on all units/modules. No special tools are required to install the equipment.

Air insulated ring network cabinet is a term corresponding to compact gas insulated ring network cabinet. In the early days, air insulated ring network cabinets used VEI vacuum or compressed air load switches, gas producing load switches, and other ring network cabinets. Later, with the widespread use of SM6, it became the main stream of air insulated ring network cabinets. Like other air ring network cabinets, the load switch has been replaced with an SF6 air bag type, which means that the load and grounding three-position switch is installed inside an epoxy resin cast insulation shell. SF6 as arc extinguishing and insulation medium

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 repairing 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 beneficial for 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

Technical Parameters

Note:

1) Depends on the rated current of the fuse

2) Limited by high-voltage fuse

3) Maximum rating of casing interface A (200 series plug-in type)

4) Maximum rating of casing B interface (400 series plug-in type)

5) The maximum rating of the casing C interface (400 series bolt connection)

PRODUCT PHOTO

FACTORY WORKSHOP

COMPANY OVERVIEW

EXHIBITION

Our advantage

(1). Energy saving: The voltage regulating capacitor changes the output reactive power by adjusting the voltage on the capacitor, so that the reactive power can be regulated smoothly. Compared with other methods, it can ensure that the capacitor is in the best condition and the energy saving effect is better.

(2). Low cost: If the old substation needs to be retrofitted, just add a voltage stabilizer between the circuit breaker and the capacitor. The original circuit breaker, reactor, and capacitor can be reused, greatly reducing the cost of retrofitting

(3). Maintenance-free: Traditional circuit breakers and contactor switches, switchgear and capacitors are often damaged due to the above problems, resulting in high maintenance costs. Using our equipment, automatic control of reactive power output, there is no potential risk of other equipment, which greatly reduces Maintenance and personnel costs of the substation

(4) Quality assurance

From raw materials to finished products, we have strict quality control procedures. An advanced testing laboratory can ensure product quality and increase our creativity. Quality and safety are the soul of our products.

(5) Quality service

Years of manufacturing experience and rich export business have helped us build a well-trained sales and service team for all customers.

(6) Fast delivery

Strong manufacturing capacity can meet urgent delivery time. About 15 to 25 working days after we receive the payment. It varies according to the product and quantity.

(7) OEM ODM and MOQ

A strong R&D team can quickly develop new products. We welcome OEM, ODM and customized orders. Choose the current product from our catalog or seek engineering help for your application. You can tell us your purchasing requirements.

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

Zimbabwean clients

Feel free to contact you,you will get immediately reply!

Our 17.5kv-630A Indoor Outdoor Air/Sf6 Gas Insulation Switchgear Ring Main Unit combines the mature technology on the market and our own rich manufacturing experience. It's our external pursuit to satisfy user's demands. We are willing to cooperated sincerely with domestic and overseas friends for common progress so as to serve the society and people in the spirit of a little bit of progress every day! In our view, quality and service are not only economic indicators, but also humanistic indicators. We are committed to highlighting product quality, value and service characteristics, so that the good relationship established between us and customers can be sustained development, and the market is full of competition.