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126KV 1250A Neutral point disconneetor

126KV 1250A Neutral point disconneetor

126KV 1250A Neutral point disconneetor is specifically engineered for application in high-voltage transmission lines operating under no-load conditions. Its primary function is to provide electrical isolation during the maintenance of circuit breakers and other associated equipment, thereby ensuring compliance with insulation distance requirements and enhancing overall operational safety.


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Product Details


circuit breaker


About us

Kesion Electric Technology Co., Ltd. is located in Shenzhen, a dynamic city symbolizing China's reform and open-door policy. Established in 2016, our company operates from a spacious 11,000-square-meter facility and achieves an annual output value exceeding 90 million yuan. With a workforce of over 100 employees, including 30 skilled engineers and technical experts, Kesion Electric Technology can produce more than 3,600 sets of medium-voltage switchgear per year.

Over the years, our company has demonstrated a strong commitment to developing a comprehensive range of products. Our offerings include 35kv gas-insulated switchgear (C-GIS and GIS) with current ratings from 630A to 3150A, as well as circuit breakers, disconnectors, isolating mechanisms, modular controllers, enclosure sheet metal, and busbar systems. Additionally, we specialize in 35kV substations, 110kV GIS, 35kV Cable Branch cabinets, 35kV transformers, and 35kV prefabricated substations. Our lineup also features fully insulated and fully enclosed permanent magnet ring main units (research and development products) and environmentally friendly gas ring main units. All our products are designed, developed, manufactured, marketed, and supported by a reputable power equipment manufacturer.

Our company has instituted a robust management system in accordance with the GB/T[insert number_1] standard for performance, company management, and safety production. Safety is our top priority. We are proud to house a technology research and development center with exceptional technical capabilities. Embracing lean production and the fusion of informatization and industrialization, we have developed an advanced production manufacturing system. Our range of production and testing equipment includes CNC punching machines, laser cutting machines, robotic welding, automated assembly lines, power frequency withstand voltage devices, shielding partial discharge devices, and vacuum box-type helium leak detection systems. Our products hold various domestic and international certifications and are renowned for their quality and services, both domestically and internationally. This has positioned us as a key strategic partner for numerous reputable manufacturers. With a dedicated technical team and attentive marketing services, we steadfastly uphold the principles of "leading with technology, quick response, and safe electricity use." Our commitment to cutting-edge technology, competitive pricing, and sincere pre-sales and after-sales services has earned us the trust and admiration of our customers.


The GW13 neutral point disconnector type isolation switch is designed for use in high-voltage transmission lines under no-load conditions. It provides electrical isolation during the maintenance of circuit breakers and other equipment, ensuring safety and compliance with insulation distance requirements.

This switch meets the standards for "IEC-129" AC isolation switch and the isolating switch(1984)", and earthing switch, providing reliable and safe operation with the added benefits of compact size, simple structure, and easy installation and debugging process. It consists of three monopoles and mechanisms, with each single pole having two post insulators fixed on a base at a 50-degree angle to form a V-type structure. The switch body rotates through a porcelain vase, and the base contains a bevel gear switch. The main circuit is made of copper material with two silver-plated contacts, ensuring high flow capacity. The CS17 manual mechanism used in the operating mechanism is light and flexible, and the mechanical interlocking mechanism between the output shafts ensures safe operation in a specific sequence, preventing potential hazards. Additionally, it can be equipped with an electromagnetic lock to prevent misoperation and can also be fitted with a CJ-11-type electric operating mechanism to accommodate different user requirements.

This high-voltage electrical product, the GW13 switch, is not only reliable and safe but also cost-effective. Its widespread use in power plants is a testament to its value and economic prudence, ensuring a satisfying return on investment.

Service and Installation Conditions

1. The altitude does not exceed 1000m;

2.The ambient air temperature:Maximum +40℃;Minimum:General Area -30℃,Paramos -40℃;

3. The wind pressure does not exceed 700Pa. (corresponding to 34m/s wind speed);

4. The earthquake intensity does not exceed 8 degrees;

5. The working situation is without frequent violent vibration;

6. The installation site of an ordinary type isolator should be kept away  from  gas, smoke  chemical  deposition, salt-spray  fog, dust

and other explosive and corrosive matters that seriously affect the insulation and conduction capability of the isolator.

7. Pollution-proof type isolator is applied to severe filthy conduction areas. However,  there shouldn't be any explosive matters and matters causing a fire.

Main parameters

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