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VS1-33
VS1-33 Vacuum Circuit Breaker
The 33KV VS1 circuit breaker is an indoor AC high voltage vacuum circuit breaker designed for cross-border medium and high voltage distribution networks, foreign-related special industries, and international energy projects. It is suitable for three-phase 50Hz/60Hz power frequency AC circuits, with a rated voltage of 33KV. Its core applications include control and protection of cross-border high voltage distribution network hubs, foreign-related heavy industrial enterprises, international energy cooperation projects, and large port high voltage distribution networks.
This product meets both domestic GB standards and international IEC and ANSI standards. It adopts an integrated modular heavy-duty design of mechanism and circuit breaker, with a sturdy structure and strong compatibility. It supports two installation forms: fixed and withdrawable handcart, and is suitable for installation in international standard medium and high voltage switchgear.
The product adopts high-precision and large capacity vacuum arc extinguishing chamber and corrosion-resistant contact materials, with excellent arc extinguishing performance, reliable breaking, no harmful gas emissions, no noise pollution, and can effectively cope with complex loads, harsh working conditions and voltage stability requirements of cross-border distribution networks and foreign-related scenarios.
It can quickly cut off overload, short circuit, and zero sequence fault currents, ensure the safe and stable operation of distribution networks and equipment, and adapt to working environments with altitude ≤ 3500m and ambient temperature -35 ℃~50 ℃. It is the preferred equipment for foreign-related medium and high voltage scenarios.
Features
1. Double standard deep compatibility, suitable for foreign-related scenarios:
strictly following domestic GB1984, DL/T403 standards, while complying with international IEC60056, IEC62271-106 and ANSI standards, passing international authoritative certifications such as KEMA, CE, UL, etc., electrical parameters and installation dimensions are fully compatible with international similar products, and can directly adapt to multinational projects, foreign-related enterprises and imported distribution equipment without additional modification, meeting international project acceptance requirements.
2. Reliable breaking and wide load adaptability:
Adopting high-precision longitudinal magnetic field vacuum arc extinguishing chamber, the rated short-circuit breaking current can reach 55-63kA, which can reliably break the load current and short-circuit fault current of cross-border distribution network and foreign-related industry. The insulation recovery speed after arc is fast, supporting one-time and second reclosing operations, adapting to the fault recovery needs of different scenarios, and has high operational stability.
3. Structural compatibility and excellent interchangeability:
Adopting an international standard modular structure design, core components such as the arc extinguishing chamber and operating mechanism can be directly interchanged with the international 33KV VS1 circuit breaker of the same voltage level. It is also 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, and can achieve live extraction maintenance, reducing the range of power outages and downtime.
4. Protection upgrading, adapting to multiple working conditions:
the parts are made of high quality alloy materials that are resistant to temperature, corrosion, aging and salt spray. After special strengthening treatment, the sealing structure is designed with double seals, which has good dust-proof, moisture-proof, electromagnetic interference and salt spray resistance performance, and can adapt to multiple and complex environments such as transnational distribution networks, ports and foreign-related industrial zones. The mechanical life can reach 30000 times.
5. Intelligent universal and international operation and maintenance:
International standard intelligent control interfaces are reserved, and international universal intelligent monitoring units can be installed to achieve remote opening and closing, real-time monitoring of operating status, fault self diagnosis, and remote fault location functions, supporting linkage with international mainstream distribution network automation systems; Provide multilingual operation and maintenance interfaces and manuals to meet the international operation and maintenance needs of foreign-related projects.
The rated current of this product covers 2500A~4000A, and different specifications such as 3150A and 4000A can be customized according to scene requirements. The rated short-circuit breaking current is 55~63kA, the rated short-circuit closing current can reach 137.5~160kA, the rated short-circuit duration is 4s, the closing time is 35~75ms, the opening time is 20~45ms, the closing bounce time is ≤ 1.5ms, the opening and closing asynchrony is ≤ 1.5ms, and the contact resistance is ≤ 80 μ Ω, meeting the load requirements of cross-border distribution networks and foreign-related scenarios.
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, and there are no places with severe vibration, strong chemical corrosion, explosion hazards, or serious pollution; Port scenes can be customized with anti salt spray and anti moisture solutions, foreign-related industrial zones can be customized with anti-corrosion and anti electromagnetic interference solutions, and high-altitude scenes can be customized with reinforced insulation 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 manuals; Support customized manual/electric operation modes, intelligent monitoring functions, and special protection solutions, which can be used with international standard matching handcarts. Accessories can be conveniently supplied worldwide.
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Specification
| Item | Unit | Data | ||||
| Rated voltage | kV | 33 | ||||
| Rated frequency | Hz | 50 | ||||
| Rated insulation level | 1-minute power frequency withstand voltage (effective value) | kV | 80 | |||
| Lightning impulse withstand voltage (peak value) | kV | 215 | ||||
| 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 33KV VS1 circuit breaker and 30KV, 35KV models?
The core difference lies in the compatibility of standards and scene positioning, which are not interchangeable. The 33KV model is designed for international and cross-border scenarios, with deep compatibility with both domestic and international standards. It has passed international authoritative certification and is suitable for cross-border distribution networks and foreign-related industries; The 30KV model focuses on the domestic medium and high voltage backbone distribution network, only following domestic standards, with parameters between 24KV and 35KV; The 35KV model focuses on heavy-duty distribution network backbone and large substations, with higher breaking capacity and insulation level, and emphasizes high-end domestic scenarios without international standard adaptability. The voltage, standards, and structure of the three are significantly different and cannot be used interchangeably.
Can this product be used for high-voltage distribution networks in large ports?
Sure. This product can be customized with anti salt spray and anti moisture strengthening solutions. The components have undergone special anti salt spray treatment, which can resist the salt spray and high humidity environment at the port and seaside, avoiding equipment corrosion; The rated voltage is 33KV and the breaking current is 55-63kA, which is suitable for the high voltage load requirements of port container cranes, loading and unloading equipment, and warehousing systems. It can be responsible for the control and fault protection of the port’s high voltage distribution network, quickly cutting off fault currents, and ensuring the continuous operation of port operations.
What international certification documents and multilingual support can be provided when using foreign-related projects?
This product has passed international authoritative certifications such as KEMA, CE, and UL, and can provide internationally recognized type test reports, certification documents, and factory inspection reports, fully meeting the acceptance requirements of cross-border 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, German, and French. Specific language versions can be customized according to project requirements to adapt to international operation and maintenance management.
Can the core components of the product be interchangeable with international models of the same voltage level?
Sure. This product adopts international standard structure and size design, with core components such as arc extinguishing chamber, operating mechanism, and electrical components. It can be directly interchanged with international 33KV VS1 circuit breakers of the same voltage level without the need for additional customization, greatly improving the operation and maintenance convenience of foreign-related projects, reducing the cost of accessory procurement. At the same time, accessories can be conveniently supplied globally, avoiding 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. The data transmission protocol complies with international standards, realizing remote opening and closing, fault alarm, status monitoring, and remote fault positioning functions. It can be linked with the intelligent dispatch platform of international projects to achieve intelligent and unmanned operation and maintenance, and adapt to the intelligent needs of foreign-related projects.
Related Applications
Cross border high-voltage distribution network hub: As the core connecting equipment of cross-border high-voltage distribution networks, it is used to connect high-voltage distribution networks of different countries. Due to its deep compatibility with international standards, it can achieve seamless integration of domestic and foreign distribution network equipment. It is responsible for power transmission, load distribution, and fault protection of the main lines of cross-border distribution networks, quickly cutting off fault currents, avoiding the spread of faults to different countries’ distribution networks, ensuring the safety and stability of cross-border power transmission, and adapting to the needs of cross-border energy cooperation.
Distribution network of foreign-related heavy industrial enterprises: Used for high-voltage distribution network control and protection of foreign-related heavy industrial enterprises such as Sino foreign joint ventures and foreign-owned enterprises, such as foreign-related heavy machinery manufacturing, foreign-related metallurgy, and foreign-related chemical enterprises. The products are compatible with both domestic and international standards and can be directly adapted to the enterprise’s imported distribution equipment. They are responsible for the power supply control and fault protection of the enterprise’s high-voltage incoming lines, main distribution, and large-scale production equipment, meeting international project acceptance requirements and ensuring the continuity of the enterprise’s international production.
Large port high-voltage distribution network: Suitable for high-voltage distribution network systems in large seaports and river ports, responsible for high-voltage power supply control and fault protection of port container cranes, loading and unloading equipment, warehousing systems, lighting systems and other equipment. After anti salt spray and anti moisture reinforcement design, it can adapt to the complex environment of the port, quickly cut off fault currents, avoid interruptions in port operations caused by faults, and ensure the efficient operation of port logistics.
