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VS1-24
VS1-24 Vacuum Circuit Breaker
The 24KV VS1 circuit breaker is an indoor AC high-voltage vacuum circuit breaker designed for high-end high-voltage distribution networks, special energy scenarios, and international high-end projects. It is suitable for three-phase 50Hz/60Hz power frequency AC circuits, with a rated voltage of 24KV. Its core applications include high-voltage distribution network control and protection for ultra-high voltage supporting distribution networks, large nuclear power auxiliary distribution networks, international high-end energy projects, and ultra large heavy industry enterprises. This product adopts a high-end heavy-duty design that integrates mechanism and circuit breaker, integrates international advanced technology, has a sturdy structure, excellent performance, and extremely high reliability.
It supports two installation forms: fixed and withdrawable handcart, and is suitable for installation in high-end special high-voltage switchgear. The product strictly follows the domestic GB standards and the highest international IEC and ANSI standards. It uses top-level high-capacity vacuum arc extinguishing chambers and new corrosion-resistant contact materials, with extremely fast arc extinguishing speed, strong breaking ability, no harmful gas emissions, and no noise pollution. It can effectively cope with ultra-high current, extreme faults, and harsh working conditions in high-end high-voltage scenarios, quickly cut off overload, short circuit, grounding and other fault currents, and ensure the safe and stable operation of high-end high-voltage distribution networks and core equipment. It is suitable for working environments with altitude ≤ 4500m (non-standard review required) and ambient temperature -40 ℃~55 ℃. It is the top choice equipment for high-end high-voltage distribution networks and special energy scenarios.
Features
1. Top level breaking and insulation, excellent performance:
using a top of the line high-capacity longitudinal magnetic field vacuum arc extinguishing chamber, the new copper chromium alloy contacts are resistant to erosion and have excellent conductivity. The rated short-circuit breaking current can reach 63-80kA, the rated short-time power frequency withstand voltage (1min) can reach 120kV (relative to ground, phase to phase), 130kV (fracture), and the rated lightning impulse withstand voltage (peak) can reach 200kV (relative to ground, phase to phase), 220kV (fracture). The insulation and breaking performance reaches the top level of similar products, and can stably withstand 24KV high voltage loads to cope with extreme fault conditions.
2. Compatible with top international standards and suitable for high-end foreign-related projects:
Strictly following domestic GB1984 and DL/T403 standards, while complying with the highest international standards of IEC60056, IEC62271-106, ANSI, and passing international top-level certifications such as KEMA, CE, UL, TUV, etc., the electrical parameters, installation dimensions, and performance indicators are fully compatible with international high-end similar products, and can directly adapt to international high-end energy projects and foreign-related special projects, meeting the acceptance requirements of top-level projects.
3. Extreme environment adaptation and extreme reliability:
high-end high and low temperature resistant, corrosion resistant and anti-aging alloy materials are used. The parts have been specially strengthened, and the double sealing structure design has excellent dust-proof, moisture-proof, salt fog resistant, electromagnetic interference resistant, impact resistant, and seismic performance. It can adapt to extreme environments such as high altitude, cold, high temperature, high pollution, oil and gas corrosion. The mechanical life can reach 30000 times, the breaking times of full capacity short circuit current can reach 120 times, and the electrical life can meet E4 level.
4. Intelligent high-end integration, intelligent operation and maintenance:
Equipped with a top-level integrated intelligent monitoring and control system, it can monitor all key parameters such as current, voltage, temperature, energy storage status, arc extinguishing chamber vacuum degree, mechanical characteristics, insulation performance, etc. in real time. It supports fault self diagnosis, remote opening and closing, remote fault positioning, trend analysis and warning, data visualization, and intelligent scheduling linkage functions, and can seamlessly connect with top domestic and foreign distribution automation systems to achieve unmanned and intelligent operation and maintenance throughout the entire process.
5. Customized and precise, suitable for special scenarios:
supporting personalized and high-end needs of ultra-high voltage matching, nuclear power auxiliary, and international high-end energy projects, accurately customizing rated current, breaking capacity, operation mode, protection scheme, intelligent functions, and installation form, can adapt to various extreme working conditions and special scenarios, and can also be used with high-end special high voltage matching equipment, achieving top-level universality and adaptability.
The rated current of this product covers 3150A~5000A, and different specifications such as 4000A and 5000A can be customized according to scene requirements. The rated short-circuit breaking current is 63~80kA, the rated short-circuit closing current can reach 160~200kA, the rated short-circuit duration is 4s, the closing time is 35~80ms, the opening time is 20~40ms, the closing bounce time is ≤ 1ms, the opening and closing asynchrony is ≤ 1ms, and the contact resistance is ≤ 60 μ Ω, meeting the high current, high reliability, and high safety requirements of high-end high-voltage scenes.
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 top-level reinforced insulation solutions, high-altitude scenarios (below -40 ℃) can be customized with low-temperature adaptive operating mechanisms and components, and high-temperature and high pollution scenarios can be customized with reinforced protection solutions.
Each product undergoes strict type testing, factory inspection, extreme environment testing, and international top-level certification, accompanied by complete domestic and international testing reports, certification documents, and multilingual high-end operation and maintenance manuals; Support customized manual/electric operation modes and high-end protection solutions, which can be used with international top-level high-voltage supporting equipment, and accessories can be supplied globally.
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Specification
| Item | Unit | Data | ||||
| Rated voltage | kV | 24 | ||||
| Rated frequency | Hz | 50 | ||||
| Rated insulation level | 1-minute power frequency withstand voltage (effective value) | kV | 60 | |||
| Lightning impulse withstand voltage (peak value) | kV | 145 | ||||
| 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 24KV VS1 circuit breaker and 22KV model, and what are the differences in adaptation scenarios?
The core differences lie in performance level, extreme environment adaptability, and international certification level. The adaptation scenarios are positioned differently and cannot be interchangeable. The 24KV model achieves top-level performance (breaking current of 63-80kA), can adapt to extreme environments, has passed international top-level certification, and focuses on ultra-high voltage matching, nuclear power auxiliary, and international high-end projects; The 22KV model has the second highest performance and is suitable for conventional special high voltage and cross-border scenarios, but cannot meet the extreme load and environmental requirements of high-end scenarios. There are significant differences in voltage, performance, and certification between the two.
Can this product be used for large-scale nuclear power auxiliary distribution network systems?
Sure. This product is designed specifically for nuclear power auxiliary distribution network, with reliable performance and extremely high safety. It has been strengthened with anti radiation, anti vibration, and anti electromagnetic interference treatment, and meets the relevant standards of nuclear power equipment. The rated voltage is 24KV and the breaking current is 63-80kA, which is suitable for the load requirements of nuclear power auxiliary distribution network. It can be responsible for the power supply control and fault protection of auxiliary systems such as circulating water, ventilation, cooling, emergency power supply, etc. in the nuclear power plant area, to avoid auxiliary system failures affecting the normal operation of nuclear power projects and ensure nuclear power safety.
What is the special significance of the product's closing bounce time ≤ 1ms?
The closing bounce time ≤ 1ms is a core performance indicator of high-end high-voltage circuit breakers, which is of great significance. Firstly, it minimizes contact wear and arc erosion, extends the service life of the arc extinguishing chamber and contacts, and reduces the operation and maintenance costs in high-end scenarios; The second is to completely avoid hidden dangers such as arc reignition and insulation damage, greatly improving the reliability of closing and opening, especially suitable for ultra-high current and extreme fault scenarios, which can effectively ensure the safety and stability of core equipment and distribution network, far exceeding the performance of ordinary high-end models.
What is the core of special modification when used in extreme environments (high cold, high altitude)?
High cold (below -40 ℃) scene transformation core: Customize low-temperature resistant operating mechanisms and components, select top-level low-temperature resistant lubricating grease, optimize sealing structure, and avoid mechanical jamming, insufficient energy storage, and insulation performance degradation caused by low temperature; The core of high-altitude (>2500m) scene transformation: using top-level reinforced insulation materials, significantly increasing the thickness of the insulation cylinder and the anti creepage distance, strengthening the sealing of electrical components, avoiding problems such as arc extinguishing and insulation breakdown caused by low air pressure, and ensuring stable operation of the equipment in extreme environments.
Can the intelligent control system of this product achieve seamless linkage with top international distribution automation systems?
Sure. The product is equipped with a top-level integrated intelligent control system that adopts international standard data transmission protocols. It can seamlessly integrate with top international distribution network automation systems such as Schneider, Siemens, ABB, etc., achieving full functional linkage such as remote opening and closing, fault alarm, status monitoring, trend warning, and intelligent scheduling. The data transmission is accurate and stable, and it can achieve unmanned and intelligent scheduling of the entire process of high-end high-voltage distribution network, adapting to the intelligent needs of international high-end projects.
Related Applications
Ultra high voltage supporting distribution network system: used for the supporting high voltage distribution network of 1000KV ultra-high voltage substations. As the core supporting equipment of the ultra-high voltage power grid, it is responsible for the power supply control and fault protection of core auxiliary systems such as high voltage energy storage, high voltage cooling, and high voltage control in the ultra-high voltage substation. It has top-level performance and extremely high reliability, and can adapt to the strong electromagnetic interference, vibration, and high load environment of the ultra-high voltage substation, avoiding the impact of supporting system faults on the main power transmission of the ultra-high voltage power grid and ensuring the safe and stable operation of the ultra-high voltage power grid.
Large scale nuclear power auxiliary distribution network: adapted to the auxiliary distribution network system of large 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, emergency power supply system, etc. in the nuclear power plant area. After strengthening anti radiation, anti vibration, and anti electromagnetic interference treatment, it meets the strict safety requirements of nuclear power equipment, can quickly cut off fault current, avoid auxiliary system faults affecting the normal operation of nuclear power projects, eliminate safety hazards, and ensure nuclear power safety.
International high-end energy projects: High voltage distribution networks used for international high-end energy projects such as photovoltaic power plants, wind power plants, and oil and gas extraction projects. Due to the product’s international top-level certification and compatibility with international standards, it can directly adapt to the needs of international high-end projects, be responsible for the collection, transmission control, and protection of project electricity, adapt to the extreme environment where the project is located, ensure the safe and efficient operation of international high-end energy projects, and improve project quality and reliability.
High voltage distribution network for ultra large heavy industry enterprises: Suitable for the high voltage distribution network of ultra large heavy industry enterprises and heavy equipment manufacturing bases, such as large shipbuilding, heavy machine tool manufacturing, and large engineering machinery manufacturing enterprises. These enterprises have a huge power load and high equipment accuracy. This product can be responsible for the power supply control and fault protection of the enterprise’s high voltage incoming lines, main distribution lines, and large heavy equipment. It can withstand the huge impact current of equipment start-up, quickly cut off the fault current, avoid production interruption, and ensure the high-end and large-scale production of the enterprise.
