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VS1-30
VS1-30 Vacuum Circuit Breaker
The 30KV VS1 circuit breaker is an indoor AC high voltage vacuum circuit breaker designed for the backbone of medium and high voltage distribution networks and special industrial scenarios. It is suitable for three-phase 50Hz/60Hz power frequency AC circuits, with a rated voltage of 30KV. Its core applications include the control and protection of regional high voltage distribution network backbone lines, large oil and gas transmission pipelines, medium-sized nuclear power auxiliary distribution networks, and heavy metallurgical enterprise high voltage distribution networks.
This product adopts a heavy-duty compact design that integrates the mechanism and circuit breaker, balancing structural strength and installation flexibility. It supports two installation forms: fixed and withdrawable handcart, and is suitable for installation in dedicated medium and high voltage switchgear. The product is strictly manufactured in accordance with GB1984, DL/T403, IEC60056, and IEC62271-106 standards. It adopts a large capacity vacuum arc extinguishing chamber and a new type of corrosion-resistant copper chromium contact, with stable arc extinguishing performance, strong breaking ability, no harmful gas emissions, and no noise pollution.
It can effectively cope with high current, heavy load, and complex fault conditions of medium and high voltage backbone distribution networks, quickly cut off overload, short circuit, grounding and other fault currents, ensure the safe and stable operation of distribution networks and core equipment, and is suitable for working environments with altitude ≤ 4000m (non-standard review required) and ambient temperature -35 ℃~50 ℃. It is the core control equipment for medium and high voltage backbone distribution networks and special industrial scenarios.
Features
1. Backbone scenario adaptation and precise parameter matching:
specially designed for 30KV medium and high voltage backbone distribution networks, filling the gap in voltage level adaptation between 24KV and 35KV. The rated parameters are in line with the load requirements of regional backbone distribution networks and special industries. It can not only carry high current transmission but also quickly respond to fault removal, avoiding the spread of faults to the entire distribution network and achieving precise scene positioning.
2. Balanced breaking and insulation performance:
Adopting a large capacity longitudinal magnetic field vacuum arc extinguishing chamber, the rated short-circuit breaking current can reach 50-63kA, the insulation recovery speed after arc is fast, and multiple reclosing operations are supported; The insulation cylinder is cast as a whole using epoxy resin APG technology, with sufficient anti creepage distance. The rated short-time power frequency withstand voltage (1min) can reach 115kV (relative to ground, phase to phase), 125kV (fracture), and can stably withstand 30KV high voltage load, resisting high pollution and high humidity environmental hazards.
3. Sturdy structure and strong environmental adaptability:
The body is welded with high-strength steel plates, and the components have undergone high-temperature quenching and anti-corrosion treatment, resulting in high mechanical strength and excellent impact resistance, vibration resistance, and electromagnetic interference resistance; Optimized sealing structure, customizable dust-proof, anti-corrosion, and salt spray prevention solutions, capable of adapting to harsh industrial environments such as metallurgical plants and oil and gas transmission stations, with a mechanical lifespan of up to 30000 cycles.
4. Intelligent integration, convenient operation and maintenance:
Equipped with an integrated intelligent monitoring module, it can monitor current, voltage, temperature, arc extinguishing chamber vacuum degree, and energy storage status in real time. It supports fault self diagnosis, remote opening and closing, and remote fault positioning functions, seamlessly integrating with the distribution network automation system to achieve intelligent operation and maintenance, reduce manual intervention, and lower operation and maintenance costs.
5. Modular design, strong universality:
The electrical components adopt a modular layout, which is easy to disassemble and replace. The core components can be interchanged with domestic 30KV VS1 circuit breakers of the same voltage level. Support customized manual/electric operation modes, which can be used with supporting products such as fuse handcart, isolation handcart, voltage transformer handcart, etc., to meet the operation and maintenance needs of different scenarios.
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 50~63kA, the rated short-circuit closing current can reach 125~160kA, the rated short-circuit duration is 4s, the closing time is 35~80ms, 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 medium and high voltage backbone distribution networks 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, and there are no places with severe vibration, strong chemical corrosion, explosion hazards, or serious pollution; High altitude scenarios (>2500m) can be customized with reinforced insulation and sealing solutions, metallurgical scenarios can be customized with high temperature and dust prevention solutions, and oil and gas scenarios can be customized with anti-corrosion solutions.
The product meets the KEMA type test A-level certification standard, and each unit has undergone strict type testing, factory inspection, and weather resistance testing. It comes with a complete inspection report, certificate of conformity, and technical parameter manual; Timely supply of accessories and provision of comprehensive after-sales operation and maintenance services.
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Specification
| Unit | Data | |||||
| Rated voltage | kV | 30 | ||||
| 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 the 30KV VS1 circuit breaker and the 24KV and 35KV models?
The core difference lies in parameter localization and scene adaptation, which are not interchangeable. The 30KV model focuses on the transition scenario of medium and high voltage backbone distribution network, with parameters ranging from 24KV to 35KV (breaking current 50~63kA), suitable for regional backbone and special industrial mid-range scenarios; The 24KV model focuses on high-end special scenarios, with better breaking and insulation performance, and has passed international top-level certification; The 35KV model focuses on heavy-duty distribution network backbone and large substations, with higher breaking capacity and insulation level, suitable for larger current scenarios. There is a significant difference in the rated voltage and structural dimensions among the three, and forced exchange can lead to arc extinguishing failure and equipment failure.
Can this product be used as a supporting distribution network for large oil and gas pipelines?
Sure. This product can be customized with anti-corrosion and explosion prevention strengthening solutions. The components have undergone special anti-corrosion treatment to resist corrosive gases and dust around oil and gas pipelines. The vacuum arc extinguishing design has no fire or explosion hazards and meets the safety requirements of the oil and gas transportation industry; The rated voltage is 30KV, and the breaking current is 50-63kA, which is suitable for the high voltage load requirements of pipeline boosting stations and conveying pumps. It can be responsible for the power supply control and fault protection of supporting equipment to avoid transmission interruption caused by faults and ensure the safety and stability of oil and gas transportation.
Can the intelligent monitoring module achieve real-time warning of the vacuum degree in the arc extinguishing chamber?
Sure. The built-in intelligent monitoring module can collect real-time vacuum degree data of the arc extinguishing chamber. When the vacuum degree drops to the warning value, it will immediately send a fault alarm signal and accurately feedback abnormal information and location. The staff can stop the machine in a timely manner for inspection. If the vacuum degree cannot be restored, the arc extinguishing chamber needs to be replaced. Do not continue to use it to avoid safety hazards such as arc extinguishing failure and equipment burnout, effectively improving the reliability of equipment operation.
The mechanical lifespan of the product can reach 30000 times. What are the key daily maintenance points?
There are four key points for daily maintenance: ① Operating mechanism: Clean and lubricate it every six months, check the energy storage status, mechanical transmission components, and interlocking devices to avoid jamming and interlocking failure; ② Arc extinguishing chamber and insulation components: Regularly observe the appearance, check the insulation cylinder for damage and crawling marks, and conduct insulation performance and vacuum degree testing once a year; ③ Wiring terminals: Check the tightness of the terminals to avoid loose connections that may cause poor contact or local overheating; ④ Intelligent module: Regularly calibrate monitoring data, check communication interfaces, and ensure that remote monitoring functions are functioning properly.
What special modifications are required for use in high-altitude scenarios?
Customized strengthened insulation and sealing solutions are required for high-altitude (>2500m) scenarios: optimizing the thickness of the insulation cylinder, increasing the anti creepage distance, and selecting insulation materials that are resistant to low air pressure; Double seal electrical components to avoid difficulties in arc extinguishing and insulation performance degradation caused by low air pressure; At the same time, low temperature resistant lubricating grease can be selected to adapt to the temperature difference changes in high-altitude areas, ensuring stable operation of the equipment in high-altitude environments.
Related Applications
Regional high-voltage distribution network backbone line: used for controlling and protecting the backbone lines of high-voltage distribution networks in counties, cities, and other regions. As the core equipment of regional distribution networks, it is responsible for power transmission, load distribution, and fault protection of backbone lines. It can reliably carry the total load of residents, enterprises, and public facilities in the region, quickly cut off fault currents such as short circuits and overloads, avoid fault diffusion, ensure the reliability and stability of power supply in regional distribution networks, and adapt to the upgrading needs of regional distribution networks.
Supporting distribution network for large-scale oil and gas transmission pipelines: Suitable for high-voltage distribution network of large-scale onshore oil and gas transmission pipelines, responsible for high-voltage power supply control and fault protection of supporting equipment such as pipeline boosting stations, transmission pumps, monitoring systems, etc. After anti-corrosion and anti explosion strengthening design, it can adapt to the complex environment along the pipeline, quickly respond to faults, cut off fault currents, avoid interruption of oil and gas transmission caused by equipment failures, and ensure the safety and efficiency of oil and gas transmission.
Medium sized nuclear power auxiliary distribution network: an auxiliary distribution network system used for medium-sized nuclear power projects, responsible for high-voltage power supply control and fault protection of auxiliary equipment such as circulating water system, ventilation system, cooling system, etc. in the nuclear power plant area. It meets the strict safety requirements of nuclear power equipment, has excellent anti electromagnetic interference and anti vibration performance, and can operate stably in the special environment of the nuclear power plant area to avoid auxiliary system failures affecting the normal operation of the nuclear power project.
High voltage distribution network for heavy metallurgical enterprises: Suitable for the high-voltage distribution network of heavy metallurgical, steel manufacturing and other enterprises, responsible for the power supply control and fault protection of the enterprise’s high-voltage incoming lines, main distribution lines and large smelting equipment. It can customize high temperature and dust prevention solutions, adapt to the high temperature and high dust environment in metallurgical plants, withstand the impact current when smelting equipment is started, quickly cut off the fault current, avoid production interruption, and ensure continuous and efficient production of the enterprise.
