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VS1-12
VS1-12 Vacuum Circuit Breaker
The 12KV VS1 circuit breaker is an indoor AC high voltage vacuum circuit breaker designed for high voltage distribution network upgrade scenarios and ultra-high voltage auxiliary distribution network design. It is suitable for three-phase 50Hz power frequency AC circuits, with a rated voltage of 12KV. Its core applications include auxiliary distribution network of ultra-high voltage substations, urban high voltage distribution network upgrade and transformation, supporting distribution network of large energy bases (photovoltaic, wind power, hydropower), and high voltage distribution network control and protection of ultra large industrial enterprises (such as large-scale refining and heavy equipment manufacturing).
This product has been comprehensively upgraded in terms of arc extinguishing chamber capacity, insulation level, and mechanical performance based on the 10KV model. It adopts an integrated heavy-duty design of mechanism and circuit breaker, with a sturdy structure, excellent impact resistance, and vibration resistance. It supports two installation forms: fixed and withdrawable handcart, and is suitable for installation in large heavy-duty high-voltage switchgear. 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 new copper chromium alloy contacts, with faster arc extinguishing speed, stronger breaking ability, no harmful gas emissions, and no noise pollution.
It can effectively cut off overload, short circuit, grounding and other fault currents in ultra-high voltage auxiliary distribution networks and large energy bases, ensuring the safe and stable operation of high-voltage distribution network upgrade scenarios and ultra large equipment. It is suitable for working environments with altitude ≤ 4500m (non-standard review required) and ambient temperature -35 ℃~50 ℃. It is the core equipment for high-voltage distribution network upgrade and ultra-high voltage auxiliary scenarios.
Features
1. Strong breaking capacity, suitable for ultra high current working conditions:
using ultra large capacity longitudinal magnetic field vacuum arc extinguishing chamber, optimizing contact material and structure, rated short-circuit breaking current can reach 50-63kA, rated short-circuit closing current can reach 125-16kA, rated peak withstand current can reach 125-16kA, can rely on breaking ultra high voltage auxiliary distribution network, large energy base’s ultra high short-circuit fault current and ultra large equipment starting impulse current, with extremely fast post arc insulation recovery speed, supporting multiple reclosing operations, suitable for ultra high current and heavy load operation needs.
2. Top insulation level and extremely high operational reliability:
The epoxy resin APG process is used to cast the insulation cylinder as a whole, and special insulation reinforcement materials are added. The anti creepage distance and insulation strength are greatly improved. The rated short-time power frequency withstand voltage (1 minute) can reach 95kV (relative to ground, phase to phase), 105kV (fracture), and the rated lightning impulse withstand voltage (peak) can reach 150kV (relative to ground, phase to phase), 170kV (fracture). It can stably withstand 12KV high voltage loads, effectively resist insulation hazards in high-altitude, high pollution, and high humidity environments, and has no risk of creepage or insulation breakdown during long-term operation.
3. Heavy duty structure with excellent impact and vibration resistance:
Adopting a heavy-duty mechanical structure design, the body is welded with high-strength steel plates, and the components are subjected to high-temperature quenching and strengthening treatment, resulting in extremely high mechanical strength. The impact and vibration resistance performance far exceeds that of ordinary high-voltage VS1 circuit breakers. The mechanical life can reach 30000 times, and the full capacity short-circuit current breaking times can reach 100 times. The electrical life meets E4 level and can adapt to the complex operating environment of ultra-high voltage substations and large energy bases, reducing the incidence of mechanical failures.
4. High level of intelligent integration, suitable for high-end operation and maintenance:
Equipped with an integrated intelligent monitoring system, it can monitor current, voltage, temperature, energy storage status, arc extinguishing chamber vacuum degree, and mechanical characteristic parameters in real time. It supports fault self diagnosis, remote opening and closing, remote fault positioning, trend analysis and warning functions, and can seamlessly integrate with the ultra-high voltage distribution network automation system and intelligent dispatch center, achieving full controllability and traceability of equipment operation status, and adapting to the unmanned and intelligent operation and maintenance needs of high-end high voltage distribution networks.
5. Strong customization ability, suitable for special upgrade scenarios:
Supports customization of rated current, breaking capacity, operation mode, protection scheme, and intelligent functions according to the personalized needs of ultra-high voltage auxiliary distribution network, large energy base, and ultra large industrial enterprises. It can be adapted to special scenarios such as high altitude, high temperature, high cold, and high pollution, and can also be used with ultra-high voltage supporting equipment (such as lightning arresters and transformers). It has strong universality and can meet the personalized needs of various high-voltage distribution network upgrades and renovations.
The rated current of this product covers 2500A~5000A, and different specifications such as 3150A, 4000A, 5000A can be customized according to scene requirements. The rated short-circuit breaking current is 50~63kA, 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 ultra-high current and heavy load requirements of ultra-high voltage auxiliary distribution network and ultra large industrial enterprises.
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, sealing, and low-temperature protection solutions; In high-altitude environments (below -35 ℃), a low-temperature adaptive operating mechanism can be customized to avoid mechanical jamming caused by low temperatures.
The product meets the KEMA type test A-level certification standard and has passed strict type tests, factory inspections, weather resistance tests, and mechanical impact 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 ultra-high voltage standard fuse handcart, isolation handcart, voltage transformer handcart, etc. At the same time, it is interchangeable with similar components of domestic 12KV VS1 circuit breakers of the same voltage level, and accessories are supplied in a timely manner.
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Specification
| Item | Unit | Data | ||||
| Rated voltage | kV | 12 | ||||
| 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 and adaptation scenarios between 12KV VS1 circuit breaker and 10KV VS1 circuit breaker?
The core differences lie in the breaking capacity, insulation level, and structural strength, which are adapted to different scenarios and cannot be used interchangeably. The 12KV model has a larger breaking capacity (50~63kA vs 40~63kA), higher insulation level, and adopts a heavy-duty structure with excellent impact and vibration resistance. It focuses on upgrading heavy load distribution networks, ultra-high voltage auxiliary distribution networks, large energy bases, and other high current scenarios; The 10KV model focuses on the main lines of conventional urban high-voltage distribution networks and ordinary industrial parks, with a relatively lightweight structure and a breaking capacity suitable for conventional high-voltage loads, which cannot meet the needs of ultra-high voltage auxiliary and ultra high current scenarios.
Can this product be used for auxiliary distribution network systems in ultra-high voltage substations?
Sure. This product is designed specifically for ultra-high voltage auxiliary distribution networks, with a heavy-duty structure and excellent shock and vibration resistance. It can adapt to the complex operating environment of ultra-high voltage substations, with a rated voltage of 12KV and a breaking current of 50-63kA, suitable for the load requirements of ultra-high voltage substation auxiliary distribution networks. It can be responsible for power supply control and fault protection of substation auxiliary equipment (such as cooling systems, ventilation systems, and high-voltage energy storage systems), quickly cutting off fault currents, avoiding auxiliary system failures affecting the normal operation of ultra-high voltage substations, and supporting intelligent monitoring. It can seamlessly integrate with ultra-high voltage distribution automation systems.
What are the advantages of the product's closing bounce time ≤ 1.5ms compared to ordinary models?
The closing bounce time is ≤ 1.5ms, which is much better than ordinary VS1 circuit breakers (≤ 2ms). There are two core advantages: firstly, it significantly reduces contact wear, lowers contact resistance, avoids contact overheating and burning, prolongs the service life of the arc extinguishing chamber and contacts, and reduces operation and maintenance costs; The second is to improve the reliability of opening and closing, reduce hidden dangers such as arc reignition and insulation damage caused by closing bounce, especially suitable for ultra-high voltage auxiliary and ultra high current scenarios, which can effectively avoid the expansion of faults and ensure the safe and stable operation of equipment and distribution network.
What special modifications are required for use in high-altitude and high-altitude environments?
For high-altitude (>2500m) scenarios, it is necessary to customize a reinforced insulation solution: optimize the thickness of the insulation cylinder, increase the anti creepage distance, and strengthen the sealing of electrical components to avoid insulation performance degradation and arc extinguishing difficulties caused by low air pressure at high altitudes; For high-altitude (below -35 ℃) scenarios, it is necessary to customize a low-temperature adaptive operating mechanism, select low-temperature resistant lubricating grease and components to avoid mechanical jamming, insufficient energy storage and other faults caused by low temperature. At the same time, anti condensation and anti freezing devices can be installed to ensure the normal operation of the equipment in high-altitude environments.
Can the intelligent monitoring system achieve trend analysis and early warning, and what are its specific functions?
Sure. The built-in intelligent monitoring system of this product can collect real-time device operating parameters (current, voltage, temperature, vacuum degree, etc.), and achieve trend analysis and warning through data analysis. When the device parameters fluctuate abnormally or approach the warning value, a warning signal will be sent in advance to remind the staff to promptly investigate hidden dangers. The function is to transform passive fault handling into active hazard warning, avoid equipment failure shutdown, reduce power outage time, and lower operation and maintenance costs. At the same time, based on trend analysis data, scientific operation and maintenance plans can be formulated to extend the service life of equipment and adapt to scenarios with extremely high requirements for power supply reliability, such as ultra-high voltage auxiliary and large energy bases.
Related Applications
Urban high-voltage distribution network upgrade and renovation project: Suitable for scenarios such as upgrading and renovating urban high-voltage distribution networks, updating old lines, etc. With the continuous growth of urban electricity load, conventional 10KV distribution networks can no longer meet the ultra high current demand in some areas. This product has a rated voltage of 12KV and a breaking capacity of 50-63kA, which can adapt to the load demand after distribution network upgrade. It is used for the renovation of distribution network backbone lines in urban core areas and high load areas, improving the power supply capacity and reliability of urban distribution networks, reducing power outage time, and adapting to the development trend of urban intelligent distribution network upgrade.
Supporting distribution network for large-scale energy bases: Used for supporting high-voltage distribution networks for large-scale photovoltaic power stations, wind power stations, hydropower stations and other energy bases, such as million kilowatt photovoltaic collection stations and high-voltage backbone distribution networks for large-scale wind farms. It is responsible for the collection, transmission control and protection of power in the energy base, and can withstand intermittent, fluctuating loads and super large current impacts of new energy generation. It can quickly cut off fault currents, avoid faults affecting the power output of the energy base, and support intelligent monitoring and scheduling. It can seamlessly connect with new energy control systems to ensure the efficient and stable operation of the energy base.
High voltage distribution network for ultra large industrial enterprises: Suitable for the high voltage distribution network of large refining, heavy equipment manufacturing, large steel mills and other ultra large industrial enterprises. These enterprises have high electrical loads and equipment power, and have extremely high requirements for power supply reliability. This product can be responsible for the power supply control and fault protection of enterprise high voltage incoming lines, main distribution lines and large production equipment. It can withstand the impact current when large equipment is started, quickly cut off short circuits and overload faults, avoid production interruptions caused by faults, and has excellent anti impact and anti electromagnetic interference performance, adapting to the complex operating environment of industrial plants.
