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VS1-15
VS1-15 Vacuum Circuit Breaker
The 15KV VS1 circuit breaker is an indoor AC high voltage vacuum circuit breaker designed for transitional scenarios in medium and high voltage distribution networks. It is suitable for three-phase 50Hz power frequency AC circuits, with a rated voltage of 15KV. Its core applications include regional distribution network hubs, supporting medium-sized energy stations, large-scale mining backbone distribution networks, and high-voltage distribution network control and protection for medium-sized refining enterprises. This product adopts a compact design that integrates the mechanism and circuit breaker, balancing the breaking capacity and installation convenience. It supports two installation forms: fixed and withdrawable handcart, and is suitable for installation in medium-sized high-voltage switchgear.
The product is manufactured strictly in accordance with standards such as GB1984, DL/T403, and IEC60056. It uses high-quality vacuum arc extinguishing chambers and copper chromium alloy contacts, with stable arc extinguishing performance, reliable disconnection, no harmful gas emissions, and no noise pollution. It can effectively cope with load fluctuations and complex fault working conditions in medium and high voltage distribution networks, quickly cut off overload, short circuit, grounding and other fault currents, and ensure the safe and stable operation of medium and high voltage distribution networks and related equipment. It is suitable for working environments with an altitude of ≤ 3500m and an ambient temperature of -30 ℃~45 ℃. It is the core control and protection equipment for transition scenarios in medium and high voltage distribution networks.
Features
1. Transitional adaptation, precise scene positioning:
specially designed for the transition scenarios of 15KV medium and high voltage distribution networks, filling the gap in adaptation between 12KV and 20KV voltage levels. It can adapt to the high load requirements of medium-sized energy stations and mining areas, and is compatible with the installation layout of existing medium and high voltage distribution networks without the need for large-scale cabinet renovation, with flexible adaptability.
2. Reliable breaking and strong load adaptability:
Adopting a medium-sized capacity longitudinal magnetic field vacuum arc extinguishing chamber, the rated short-circuit breaking current can reach 40-50 kA, which can reliably break the load current and short-circuit fault current of medium-sized energy stations and refining enterprises. The insulation recovery speed after arc is fast, supporting reclosing operation, and adapting to the load fluctuation scenarios of medium and high voltage distribution networks.
3. Compact structure, easy installation and operation:
adopting an integrated compact design, the volume is smaller compared to models of 20KV and above, suitable for existing medium-sized high-voltage switchgear, and installation does not require expansion or renovation; Modular design of electrical components, easy disassembly and replacement, daily maintenance only requires regular cleaning and lubrication of the operating mechanism, and the fixed pole type can achieve maintenance free operation and reduce maintenance costs.
4. Excellent insulation and strong environmental adaptability:
The insulation cylinder is cast using epoxy resin APG technology, with sufficient anti creepage distance. The rated short-time power frequency withstand voltage (1 minute) can reach 85kV (relative to ground, phase to phase), 95kV (fracture), and the rated lightning impulse withstand voltage (peak) can reach 135kV (relative to ground, phase to phase), 155kV (fracture). It can stably withstand 15KV high voltage load and effectively resist high pollution and high humidity environmental hazards.
5. Intelligent upgradable and adaptable to operation and maintenance needs:
Reserve intelligent control interfaces and install intelligent monitoring units to achieve remote opening and closing, real-time monitoring of operating status (current, voltage, temperature, vacuum degree), and fault self diagnosis functions. Adapt to the intelligent operation and maintenance trend of medium and high voltage distribution networks, and can be flexibly upgraded according to scene requirements without the need to replace the main equipment.
The rated current of this product covers 1600A~3150A, and different specifications such as 2000A, 2500A, 3150A 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 load requirements of medium and high voltage transition 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; High altitude scenes (>2500m) can be customized with reinforced insulation solutions, mining scenes can be customized with dust and vibration prevention upgrades, and refining scenes can be customized with anti-corrosion treatment.
The product meets the KEMA type test A-level certification standard, and each unit has undergone strict factory testing, accompanied by a complete testing report and certificate of conformity; Support customized manual/electric operation modes and special protection schemes, can be used with supporting products such as fuse handcarts and isolation handcarts, with strong universality and convenient supply of accessories.
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Specification
| Item | Unit | Data | ||||
| Rated voltage | kV | 15 | ||||
| Rated frequency | Hz | 50 | ||||
| Rated insulation level | 1-minute power frequency withstand voltage (effective value) | kV | 45 | |||
| Lightning impulse withstand voltage (peak value) | kV | 110 | ||||
| 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 15KV VS1 circuit breaker and the 12KV and 20KV models?
The core difference lies in scene localization and parameter adaptation, which are not interchangeable. The 15KV model focuses on medium to high voltage transition scenarios, filling the gap between 12KV and 20KV, with parameters between the two (breaking current 40~50kA), suitable for transitional distribution networks in medium-sized energy stations, mining areas, etc; The 12KV model focuses on upgrading the heavy load distribution network, providing ultra-high voltage assistance, and increasing the breaking current; The 20KV model focuses on high-voltage distribution network backbone and large-scale energy bases, with stronger insulation and breaking performance. There are significant differences in the rated voltage, insulation level, and structural dimensions among the three, and forced exchange can lead to equipment failure.
Can this product be used for the backbone distribution network in large mining areas?
Sure. This product can be customized with dust-proof and anti vibration reinforcement solutions, which can adapt to the harsh environment of high dust and vibration in mining areas. The rated voltage is 15KV and the breaking current is 40-50 kA, which is suitable for the load requirements of the main distribution network in mining areas. It can be responsible for the high-voltage power supply control and fault protection of the main ventilation fan, main drainage pump and mining equipment in mining areas, quickly cutting off the fault current, avoiding production interruption, and ensuring production safety in mining areas.
What are the key points of daily maintenance? Does the fixed sealing pole type really need no maintenance?
Daily maintenance focus: ① Clean and lubricate the operating mechanism every 6 months, check the energy storage status and transmission components; ② Regularly observe the appearance of the arc extinguishing chamber and check for any damage or crawling marks on the insulation cylinder; ③ Check the tightness of the wiring terminals to avoid poor contact. The core components of the solid sealed pole type have good sealing and do not require regular disassembly and maintenance. Only regular checks of the operating status indicator lights and monitoring data are needed, greatly reducing the workload of operation and maintenance.
Does the product support reclosing operation and which types of faults are compatible?
Supports reclosing operation, can preset one or two reclosing logics, and the reclosing time can be adjusted (0.5-3s). Mainly suitable for transient faults in medium and high voltage distribution networks, such as lightning strikes, instantaneous short circuits, poor contacts, etc., it can quickly restore power supply and reduce power outage time; For permanent faults, the circuit breaker will immediately open after reclosing to prevent the fault from expanding and adapt to the continuous power supply needs of medium and high voltage distribution networks.
What special treatments are required for use in high-altitude scenarios?
Customized enhanced insulation solutions are required for high-altitude (>2500m) scenarios: optimizing the thickness of the insulation cylinder, increasing the anti creepage distance, and strengthening the sealing of electrical components to avoid insulation performance degradation and arc extinguishing difficulties caused by high altitude and low 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 without the need to replace the main structure.
Related Applications
Regional distribution network hub: used for the control and protection of distribution network hubs in urban areas, counties, and other regions. As a transitional connection device between 12KV distribution network and 20KV distribution network, it is responsible for the power transmission, load distribution, and fault protection of the main lines of the regional distribution network, quickly cutting off short circuits and overload faults, avoiding the spread of faults, ensuring the electrical safety of residents, enterprises, and public facilities in the region, and adapting to the load upgrade needs of the regional distribution network.
Supporting distribution network for medium-sized energy stations: Suitable for supporting distribution network systems of medium-sized photovoltaic power stations, wind power stations, and hydropower stations, responsible for the collection, transmission control, and protection of power in energy stations. It can adapt to the intermittent and fluctuating load characteristics of new energy generation, reliably disconnect load current and fault current, and support intelligent monitoring. It can seamlessly integrate with new energy control systems to ensure stable power output of energy stations and meet the large-scale development needs of medium-sized energy stations.
Large scale mining area backbone distribution network: used for the backbone distribution network of large mining areas such as coal mines and metal mines, responsible for the control and protection of the ground backbone lines and underground deep backbone power supply in the mining area. After dust-proof and anti vibration reinforcement design, it can adapt to the harsh environment of the mining area, control the power supply of key equipment such as the main ventilation fan, main drainage pump, and mining machinery in the mining area, avoid safety hazards caused by power outages, and ensure the continuity of production in the mining area.
High voltage distribution network for medium-sized refining and chemical enterprises: adapted to the high voltage distribution network control and protection of medium-sized refining and chemical enterprises, responsible for the power supply control of the enterprise’s high voltage incoming lines, main distribution lines, and production equipment. It can be customized with anti-corrosion treatment to resist corrosive gases in the refining and chemical plant area. The rated voltage is 15KV and the breaking current is 40-50 kA, adapted to the high load requirements of the enterprise’s production equipment, quickly cutting off fault currents, avoiding equipment damage and production accidents, and ensuring safe and efficient production of the enterprise.
