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VS1-10
VS1-10 Vacuum Circuit Breaker
The 10KV VS1 circuit breaker is an indoor AC high voltage vacuum circuit breaker that focuses on high-voltage distribution network backbone scenarios. It is suitable for three-phase 50Hz power frequency AC circuits, with a rated voltage of 10KV. Its core applications include high-voltage distribution network backbone lines in cities, outgoing lines of large and medium-sized substations, general distribution in large industrial parks, and high-voltage incoming line control and protection in high load industrial enterprises such as metallurgy, chemical industry, and building materials. This product has upgraded the capacity and insulation level of the arc extinguishing chamber based on the 7.2KV model. It adopts an integrated reinforced design of the mechanism and circuit breaker, with a sturdy structure and strong impact resistance. It supports three installation forms: fixed, withdrawable handcart, and floor standing, and is suitable for installation in various high-voltage switchgear and outdoor simple protective cabinets.
The product is manufactured strictly in accordance with standards such as GB1984, DL/T403, and IEC60056. It uses a large capacity vacuum arc extinguishing chamber and high-quality copper chromium contacts, with fast arc extinguishing speed, strong breaking ability, no harmful gas emissions, and no noise pollution. It can effectively cope with high current, heavy load, and frequency heavy closing conditions of high-voltage distribution network main lines, quickly cut off overload, short circuit, grounding and other fault currents, and ensure the safe and stable operation of high-voltage distribution network main lines and large electrical equipment. It is suitable for working environments with altitude ≤ 4500m (non-standard review required) and ambient temperature of -30 ℃~45 ℃. It is the core control and protection equipment of high-voltage distribution network main lines.
Features
1. Upgrading the breaking capacity and adapting to the working conditions of the main network:
adopting a large capacity longitudinal magnetic field vacuum arc extinguishing chamber, optimizing the contact structure design, the rated short-circuit breaking current can reach 40-63kA, and the rated short-circuit closing current can reach 100-160kA. It can reliably break the short-circuit fault current of the high-voltage distribution network main line and the start-up impulse current of large equipment. The insulation recovery speed after arc is fast, supporting multiple reclosing operations, and adapting to the continuous power supply and rapid fault recovery needs of the high-voltage distribution network main line.
2. Upgraded insulation performance and more stable operation:
The epoxy resin APG process is used to cast the insulation cylinder as a whole, greatly improving the anti creepage distance and insulation strength. The rated short-time power frequency withstand voltage (1 minute) can reach 75kV (relative to ground, phase to phase), 85kV (fracture), and the rated lightning impulse withstand voltage (peak) can reach 125kV (relative to ground, phase to phase), 145kV (fracture). It can stably withstand 10KV high-voltage loads, effectively resist creepage hazards in high pollution and high humidity environments, and adapt to the outdoor and complex environmental operation needs of high-voltage distribution networks.
3. High level of intelligence, suitable for automated operation and maintenance:
Equipped with an intelligent monitoring module (optional), it can monitor current, voltage, temperature, energy storage status, and arc extinguishing chamber vacuum degree in real time. It supports fault self diagnosis, remote opening and closing, and remote fault location functions. It can seamlessly integrate with the distribution network automation system and intelligent scheduling platform to achieve automatic control and unmanned operation and maintenance of high-voltage distribution network main lines, greatly improving operation and maintenance efficiency and reducing operation and maintenance costs.
4. Sturdy structure and strong anti-interference ability:
The mechanical structure has been reinforced with high-strength alloy materials, and the components have been treated with anti-corrosion and rust prevention. The mechanical life can reach 30000 times, and the full capacity short-circuit current breaking times can reach 80-100 times. The electrical life meets E3 level, and the anti vibration and anti electromagnetic interference performance is excellent. It can adapt to the complex operating environment of high-voltage distribution network main lines, reduce the incidence of mechanical and electrical failures, and ensure long-term stable operation of equipment.
5. Versatile installation and wide adaptability:
Supports three installation forms: fixed, withdrawable handcart, and floor standing. It can adapt to various installation carriers such as central cabinets, fixed cabinets, and outdoor simple protective cabinets. The handcart model adopts a high-precision plug-in structure, which can realize live withdrawal maintenance and reduce the range of power outages; The floor standing model is suitable for simple outdoor installation scenarios, without the need for dedicated switchgear, and can flexibly adapt to outdoor branches of urban distribution networks, outdoor main distribution in industrial parks, and other scenarios. It is easy to install and has strong adaptability.
The rated current of this product covers 2000A~4000A, and different specifications such as 2500A, 3150A, 4000A can be customized according to scene requirements. The rated short-circuit breaking current is 40~63kA, the rated short-circuit duration is 4s, the closing time is 35~80ms, 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 power supply needs of high-voltage distribution network backbone lines and large high load equipment.
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 pass non-standard evaluations and customize reinforced insulation and sealing solutions; Anti corrosion coatings and anti condensation devices can be installed in high pollution and high humidity scenarios to further enhance equipment adaptability.
The product meets the KEMA type test A-level certification standard and has passed strict type tests, factory inspections, and weather resistance tests. Each product comes with a complete inspection report, certificate of conformity, and technical parameter manual; Support customized manual/electric operation mode, intelligent monitoring function, and special protection scheme. It can be used with supporting products such as fuse handcart, isolation handcart, voltage transformer handcart, and lightning arrester. It has strong universality and is interchangeable with similar components of VS1 circuit breakers of the same voltage level in China, with timely supply of accessories.
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Specification
| Item | Unit | Data | ||||
| Rated voltage | kV | 10 | ||||
| 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 10KV VS1 circuit breaker and 7.2KV VS1 circuit breaker, and can they be used interchangeably?
The core differences lie in the rated voltage, breaking capacity, and scene positioning, which are not interchangeable. The 10KV model has a higher rated voltage (10KV vs 7.2KV) and a larger breaking capacity (40~63kA vs 31.5~50kA), focusing on core scenarios such as heavy distribution network main lines and large substation outgoing lines, with stronger insulation level and anti-interference ability; The 7.2KV model focuses on the edge of high-voltage distribution networks and large industrial heavy-duty branches, and adapts the breaking capacity and insulation level to meet the requirements of edge scenarios. Forcefully swapping can lead to arc extinguishing failure, equipment burnout, and even cause faults in the high-voltage distribution network backbone. It is necessary to strictly select the corresponding model according to the actual rated voltage of the circuit.
Can this product be used in outdoor high-voltage distribution network scenarios?
Sure. This product supports floor to ceiling installation and can be used with simple outdoor protective cabinets. It also optimizes the sealing and anti-corrosion structure and can adapt to outdoor environments with high humidity, high pollution, and large temperature differences. It has good rain, dust, and condensation resistance and can be directly used in urban distribution network outdoor main branches, industrial park outdoor main distribution, and other scenarios. During installation, it needs to be equipped with outdoor special protective devices to ensure long-term stable operation of the equipment and comply with outdoor high-voltage electrical equipment operation standards.
Can the intelligent monitoring module monitor the vacuum degree of the arc extinguishing chamber? How to handle any abnormalities?
Sure. The optional intelligent monitoring module of this product can monitor the vacuum degree of the arc extinguishing chamber in real time. When the vacuum degree drops to the warning value, it will immediately send a fault alarm signal and accurately feedback abnormal information. Solution: Immediately stop the equipment operation, cut off the power supply of the equipment, contact professional personnel to test the arc extinguishing chamber. If the vacuum degree cannot be restored, the arc extinguishing chamber should be replaced in a timely manner. Do not disassemble or continue to use it by yourself to avoid safety hazards such as arc extinguishing failure and equipment failure.
The product has a long mechanical lifespan. What aspects should be focused on for daily maintenance?
Daily maintenance focuses on four points: ① Operating mechanism: Clean and lubricate 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 of the arc extinguishing chamber, check whether the insulation cylinder is damaged or has 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, and conduct regular temperature checks; ④ Intelligent monitoring module: Regularly calibrate monitoring data, check communication interfaces, ensure normal remote monitoring and control functions, and adapt to automation operation and maintenance needs.
Does the product support reclosing operation, and how many reclosing operations can be performed at most?
Support reclosing operation and adapt to the fast recovery requirements of high-voltage distribution network backbone faults. This product can preset the reclosing logic (primary reclosing, secondary reclosing), and can perform up to 2 reclosing operations. The reclosing time can be adjusted according to the scene requirements (0.5-3s), which can effectively deal with transient faults of high-voltage distribution network main lines (such as lightning strikes and instantaneous short circuits), quickly restore power supply, reduce power outage time, and improve the reliability of high-voltage distribution network power supply. At the same time, it can automatically reset after reclosing operation without manual intervention.
Related Applications
Urban high-voltage distribution network main line: As the core control and protection equipment of urban high-voltage distribution network (110KV/35KV to 10KV), it is used for power supply control of urban main lines and key area distribution networks, such as high-voltage main lines of urban main roads, core business districts, and large residential areas. It is responsible for controlling power transmission and fault protection, quickly cutting off fault currents such as short circuits, overloads, and grounding, avoiding faults from spreading to the entire urban distribution network, and supporting automated operation and reclosing operations, greatly improving the reliability of urban distribution network power supply and reducing the impact of power outages on residents’ lives and commercial activities.
Outgoing circuit of large and medium-sized substations: The 10KV outgoing circuit used for 110KV and 35KV large and medium-sized substations is the core hub of power transmission between substations and urban and industrial park distribution networks. It is responsible for the control, overload and short-circuit protection, and reclosing operation of the outgoing circuit. It can bear the high current load output by the substation, quickly handle line faults, ensure the safety and stability of power transmission, and seamlessly integrate with the substation automation system to achieve unmanned operation and maintenance, and improve the efficiency of substation operation and maintenance.
General distribution system for large industrial parks: used in the general distribution room of large industrial parks, responsible for the overall power access, distribution and protection of the park, adapting to the high load power demand of various industrial enterprises in the park, such as mechanical manufacturing, metallurgy, chemical industry and other large parks. It can control the power supply on and off of the main distribution lines in the park, quickly cut off the fault current in the park, prevent the fault from spreading to the entire park, ensure the continuity of production of enterprises in the park, and support floor and handcart installation, adapting to the layout requirements of the general distribution room in the park.
High voltage incoming lines for high load industrial enterprises: Suitable for high-voltage incoming line control and protection in metallurgy, chemical, building materials and other high load industrial enterprises, such as steel mills, cement plants, and large chemical plants. Responsible for the access control of enterprise power, able to withstand the impact current when the enterprise’s large production equipment is started, quickly cut off short circuit and overload faults in the incoming line circuit, avoid damage to internal power distribution equipment and production equipment, ensure continuous and efficient production of enterprises, and have excellent anti-interference performance. Suitable for the complex electromagnetic environment of industrial plants.
