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VS1-11
VS1-11 Vacuum Circuit Breaker
The 11KV VS1 circuit breaker is an indoor high-voltage vacuum circuit breaker designed for international standard adaptation and special high-voltage applications. It is compatible with three-phase 50Hz/60Hz power frequency AC circuits, with a rated voltage of 11KV. It is primarily used for high-voltage distribution network control and protection in foreign-related large industrial enterprises, multinational industrial parks, international standard distribution network projects, and certain specialized industries (such as oil and gas extraction, large data centers). This product adheres to both domestic GB standards and international IEC/ANSI standards, featuring optimized insulation levels, electrical parameters, and structural compatibility based on the 10KV model.
It employs an integrated modular design for the mechanism and circuit breaker, offering a compact structure and reliable operation. The product supports both fixed and withdrawable trolley installation forms, compatible with international standard high-voltage switchgear. Equipped with high-precision vacuum arc extinguishing chambers and wear-resistant contact materials, it delivers stable arc extinguishing performance and robust breaking capacity. With no harmful gas emissions or noise pollution, it effectively addresses the complex loads, harsh operating conditions, and voltage stability requirements of foreign-related projects and specialized industries. It can swiftly interrupt overload, short-circuit, and zero-sequence fault currents, ensuring the safe and stable operation of distribution networks and equipment in special scenarios. Suitable for working conditions at altitudes ≤3000m and ambient temperatures ranging from -30°C to 50°C, it is the preferred equipment for foreign-related high-voltage distribution networks and specialized industries.
Features
1. Dual standard compatibility, suitable for foreign-related projects:
The product manufacturing strictly follows the domestic GB1984, DL/T403 standards, and also complies with international IEC60056, IEC62271-106, and ANSI standards. It has passed international authoritative certifications such as KEMA and CE, and its electrical parameters and installation dimensions are compatible with similar international products. It can directly adapt to foreign-related projects, multinational industrial parks, and imported power distribution equipment without additional modifications, meeting international project acceptance requirements and reducing equipment adaptation costs for foreign-related projects.
2. Balanced insulation and breaking performance, suitable for complex working conditions:
The epoxy resin APG process is used to cast the insulation cylinder as a whole, with sufficient anti creepage distance. The rated short-time power frequency withstand voltage (1 minute) can reach 80kV (relative to ground, phase to phase), 90kV (fracture), and the rated lightning impulse withstand voltage (peak) can reach 130kV (relative to ground, phase to phase), 150kV (fracture), and can stably withstand 11KV high voltage loads; The rated short-circuit breaking current can reach 40~50kA, with balanced breaking performance. It can reliably break various loads and fault currents, adapting to the complex load and voltage fluctuation requirements of special industries such as oil and gas extraction and data centers.
3. Structural compatibility and strong interchangeability:
Adopting a modular structure design, core components such as electrical components and arc extinguishing chambers can be interchanged with international VS1 circuit breakers of the same voltage level. At the same time, it is compatible with both domestic and international standards of high-voltage switchgear. The handcart model adopts an international standard plug-in structure, which is smooth and reliable in contact, and can achieve live extraction maintenance, reducing power outage range and downtime, and improving the convenience of operation and maintenance of foreign-related projects.
4. Excellent protection performance, suitable for harsh environment:
the parts are made of high quality alloy materials that are temperature resistant, corrosion resistant and anti-aging. After special anti-corrosion treatment and optimized sealing structure, they have good dust-proof, moisture-proof, salt fog resistant and electromagnetic interference resistant properties. They can adapt to the corrosive environment in the oil and gas exploration plant area, the constant temperature and humidity environment in the data center, and the complex climate conditions in the transnational park. The mechanical life can reach 30000 times, and the breaking times of full capacity short circuit current can reach 80 times, with high operation stability.
5. Intelligent and controllable, efficient operation and maintenance:
International standard intelligent control interfaces are reserved, and internationally common intelligent monitoring units can be installed to achieve remote opening and closing, real-time monitoring of operating status (current, voltage, temperature, vacuum degree), fault self diagnosis and remote fault location functions. It supports linkage with international mainstream distribution network automation systems, adapts to the intelligent and unmanned operation and maintenance needs of foreign-related projects, and can provide a multilingual operation and maintenance interface to facilitate the operation and maintenance management of international projects.
The rated current of this product covers 1600A~4000A, and different specifications such as 2000A, 3150A, 4000A can be customized according to scene requirements. The rated short-circuit breaking current is 40~50kA, the rated short-circuit closing current can reach 100~125kA, the rated short-circuit duration is 4s, the closing time is 35~75ms, the opening time is 20~50ms, the closing bounce time is ≤ 2ms, the opening and closing asynchrony is ≤ 2ms, and the contact resistance is ≤ 100 μ Ω, meeting the high load requirements of foreign-related projects and special industries.
The suitable environmental conditions are: the daily average relative humidity does not exceed 95%, the monthly average does not exceed 90%, the earthquake intensity does not exceed 8 degrees, there is no severe vibration, strong chemical corrosion (can be customized for anti-corrosion upgrade), explosion hazard, and places with serious pollution; Oil and gas extraction scenarios can be customized with enhanced anti-corrosion and explosion prevention solutions, while data center scenarios can be customized with electromagnetic interference prevention and temperature adaptation solutions.
Each product undergoes strict type testing, factory inspection, and international standard certification, accompanied by complete international and domestic testing reports, certification documents, and multilingual product manuals; Supporting customized manual/electric operation modes, intelligent monitoring functions, and special protection solutions, it can be used with international standard fuse handcarts, isolation handcarts, voltage transformer handcarts, and other supporting products. It has strong universality and accessories can be conveniently supplied globally.
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Specification
| Item | Unit | Data | ||||
| Rated voltage | kV | 11 | ||||
| Rated frequency | Hz | 50 | ||||
| Rated insulation level | 1-minute power frequency withstand voltage (effective value) | kV | 32 | |||
| Lightning impulse withstand voltage (peak value) | kV | 85 | ||||
| Rated current | A | 630 | 630 | 1250 | 1600 | |
| 1250 | 1250 | 1600 | 2000 | |||
| 2000 | 2500 | |||||
| 2500 | 3150 | |||||
| 4000 | ||||||
| Rated short-circuit breaking current | kA | 20 | 25 | 31.5 | 40 | |
| Rated short-time withstand current | 20 | 25 | 31.5 | 40 | ||
| Rated short-circuit closing current | 50 | 63 | 80 | 100 | ||
| Rated peak withstand current | 50 | 63 | 80 | 100 | ||
| Rated short-circuit duration | S | 4 | ||||
| Rated operating sequence | O – 0.3s – CO – 180s – CO | |||||
| Split 180s Split 180s Split (40kA) | ||||||
| Rated short-circuit current breaking times | 30/20 | |||||
| Mechanical lifespan | 10000 | |||||
| Rated breaking current of a single capacitor bank | 630 | |||||
| Rated back-to-back capacitor bank breaking current | 400 | |||||
| Grounding fault breaking current of different phases | kA | 10 | ||||
| Allowable wear and accumulated thickness of dynamic and static contacts | 3 | |||||
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FAQs
What are the core differences between 11KV VS1 circuit breaker and 10KV VS1 circuit breaker, and can they be used interchangeably?
The core difference lies in the compatibility of standards and scene positioning, which are not interchangeable. The 11KV model focuses on foreign-related projects and international standard distribution networks, compatible with both domestic and international standards, suitable for specific voltage scenarios of 11KV, and structurally compatible with similar international products; The 10KV model focuses on domestic high-voltage distribution network backbone lines, only following domestic standards, with slightly higher breaking capacity (up to 63kA), and emphasizes domestic urban and park distribution network scenarios. There are differences in rated voltage, insulation level, and structural dimensions between the two, and forced exchange may result in arc extinguishing failure, equipment failure, and inability to meet international project acceptance requirements.
Can this product be used for high-voltage distribution networks in oil and gas extraction plants?
Sure. This product can be customized with anti-corrosion and explosion prevention strengthening solutions. The components have undergone special anti-corrosion treatment and can withstand harsh environments such as corrosive gases and dust in oil and gas extraction plants. At the same time, the vacuum arc extinguishing design has no fire or explosion hazards and meets the safety requirements of the oil and gas extraction industry. The rated voltage is 11KV and the breaking current is 40-50kA, which is suitable for the high-voltage distribution network load of oil and gas extraction plants. It can be responsible for the power supply control and fault protection of extraction equipment and supporting equipment of transmission pipelines, ensuring the safety and stability of oil and gas extraction.
Can international authoritative certification documents and multilingual manuals be provided for use in foreign-related projects?
Sure. This product has passed international authoritative certifications such as KEMA and CE, and can provide internationally recognized type test reports, certification documents, and factory inspection reports, fully meeting the acceptance requirements of foreign-related projects and export projects; At the same time, it can provide product manuals, operation manuals, and technical parameter manuals in multiple languages such as Chinese, English, and German, which are suitable for the operation and maintenance management needs of international projects. Specific language versions can be customized according to project requirements.
Can the core components of the product be interchangeable with VS1 circuit breakers of the same voltage level internationally?
Sure. This product adopts international standard structural design, and the dimensions and interfaces of core components such as arc extinguishing chamber, operating mechanism, and electrical components are compatible with international VS1 circuit breakers of the same voltage level. It can be directly interchanged without additional customization, greatly improving the operation and maintenance convenience of foreign-related projects, reducing accessory procurement costs, and providing global convenient supply of accessories to avoid downtime caused by shortage of accessories in foreign-related projects.
After the intelligent upgrade, can it be integrated with international mainstream distribution network automation systems?
Sure. This product reserves an international standard intelligent control interface, and after installing an intelligent monitoring unit, it can seamlessly integrate with mainstream international distribution network automation systems (such as Schneider and Siemens distribution network automation systems) to achieve remote opening and closing, fault alarm, status monitoring, and remote fault location functions. The data transmission protocol complies with international standards and can be linked with the intelligent dispatch platform of international projects to achieve intelligent and unmanned operation and maintenance, adapting to the intelligent management needs of foreign-related projects.
Related Applications
Distribution network of large foreign-related industrial enterprises: Used for high-voltage distribution network control and protection of foreign-related large-scale industrial enterprises such as Sino foreign joint ventures and wholly foreign-owned enterprises, such as foreign-related metallurgical, electronic, and chemical enterprises. Due to product compatibility with both domestic and international standards, it can directly adapt to imported distribution equipment of enterprises, responsible for the control and fault protection of high-voltage incoming lines and main distribution lines of enterprises, meeting international project acceptance requirements, ensuring the continuity of international production of enterprises, and supporting multilingual operation and maintenance interfaces to facilitate the management of international operation and maintenance teams of enterprises.
Cross border industrial park distribution network system: Suitable for high-voltage distribution networks in cross-border cooperative industrial parks and international industrial parks, such as Sino German and Sino Japanese cooperative industrial parks. The electrical parameters and structural dimensions of the products are compatible with international standards, and can achieve seamless connection of power distribution equipment for domestic and foreign enterprises in the park. It is responsible for controlling and protecting the main lines and partition distribution of the park, quickly cutting off fault currents, avoiding fault diffusion, ensuring the normal production of various enterprises in the park, and supporting intelligent operation and maintenance to reduce the operation and maintenance costs of the park.
High voltage distribution network in oil and gas extraction plant areas: Used for the control and protection of high-voltage distribution networks in oil and gas extraction plant areas, such as supporting distribution networks for onshore oil and gas fields and offshore oil and gas platforms (requiring customized offshore protection plans). The product has been designed with anti-corrosion and anti explosion strengthening, and can adapt to the harsh environment of the extraction plant area. The rated voltage is 11KV and the breaking current is 40-50 kA, which is suitable for the high load requirements of extraction equipment. It can control the power supply of drilling equipment, conveying pumps, and boosting equipment, ensuring the safety and stability of oil and gas extraction and transportation.
High voltage distribution network for large data centers: Suitable for high-voltage incoming lines and backbone power distribution control in large data centers. As a high-precision and high reliability power consumption scenario, the data center has excellent anti electromagnetic interference and stable operation performance. It can stably control the access and distribution of high-voltage power sources in the data center, quickly cut off fault currents, and avoid data center shutdown and loss caused by faults. At the same time, it supports intelligent monitoring, which can real-time grasp the operation status of power distribution equipment and meet the 24-hour unmanned operation and maintenance needs of data centers.
International standard distribution network export projects: international standard distribution network projects for China’s export, such as urban distribution network projects and industrial park distribution network projects in countries along the the Belt and Road, whose products meet international standards and pass international authoritative certification, can directly adapt to project needs without additional modification, be responsible for the control and protection of distribution network trunk lines and substation outgoing lines, ensure the power supply reliability of export projects, provide perfect international after-sales and accessory supply services, and enhance the reputation of the project.
