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VS1-35
VS1-35 Vacuum Circuit Breaker
The 35KV VS1 circuit breaker is an indoor AC high-voltage vacuum circuit breaker designed for high-voltage distribution network backbone, large substations, and large energy bases. It is suitable for three-phase 50Hz power frequency AC circuits, with a rated voltage of 35KV. Its core applications include 35KV high-voltage distribution network backbone lines, large substation inlet and outlet lines, large new energy base (photovoltaic, wind power) supporting distribution networks, and high-voltage distribution network control and protection for ultra large industrial enterprises.
This product adopts a high-end heavy-duty design that integrates the mechanism and circuit breaker. It has 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 high-end 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 fast arc extinguishing speed, strong breaking ability, no harmful gas emissions, and no noise pollution.
It can effectively cope with the ultra-high current, heavy load, and complex fault conditions of high-voltage distribution network backbone and large energy base, quickly cut off overload, short circuit, grounding and other fault currents, ensure the safe and stable operation of high-voltage distribution network and ultra large equipment, and is suitable for working environments with altitude ≤ 4500m (non-standard review required) and ambient temperature of -40 ℃~50 ℃. It is the core equipment of high-voltage distribution network backbone and large-scale energy scenarios.
Features
1. Strong breaking ability, suitable for ultra-high current:
adopting a high-capacity longitudinal magnetic field vacuum arc extinguishing chamber, optimizing the contact material and structure, the rated short-circuit breaking current can reach 63-80kA, and the rated short-circuit closing current can reach 160-200kA. It can reliably break the ultra-high short-circuit fault current of high-voltage distribution network backbone and large energy base, as well as the starting impulse current of ultra large equipment. The insulation recovery speed after arc is extremely fast, supporting multiple reclosing operations, and adapting to the needs of ultra-high current and heavy load operation.
2. Top insulation level and 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 125kV (relative to ground, phase to phase), 140kV (fracture), and the rated lightning impulse withstand voltage (peak) can reach 200kV (relative to ground, phase to phase), 220kV (fracture). It can stably withstand 35KV 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 outstanding 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 120 times. The electrical life meets E4 level and can adapt to the complex operating environment of large substations and 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 connect with high-voltage distribution network automation systems and intelligent dispatch centers, achieving full process 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 and adaptability to multiple scenarios:
Supports customization of rated current, breaking capacity, operation mode, protection scheme, and intelligent functions according to the personalized needs of large energy bases and super large industrial enterprises. It can adapt to special scenarios such as high altitude, high temperature, high cold, and high pollution, and can also be used with 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 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 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 ultra high current requirements of high-voltage distribution network backbone and large energy bases.
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 -40 ℃), 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 modes, intelligent monitoring functions, and special protection solutions, with timely supply of accessories.
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Specification
| Item | Unit | Data | ||||
| Rated voltage | kV | 35 | ||||
| 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 35KV VS1 circuit breaker and 30KV, 33KV models?
The core differences lie in the breaking capacity, insulation level, and scene positioning, which are not interchangeable. The 35KV model has a larger breaking capacity (63-80kA), higher insulation level, and adopts a high-end heavy-duty structure, focusing on heavy current scenarios such as distribution network backbone, large substations, and large energy bases; The 30KV model focuses on domestic medium and high voltage backbone distribution networks, with lower breaking currents; The 33KV model is designed for international and cross-border scenarios, with its core advantage being dual standard compatibility. Its breaking and insulation performance falls between the two, making it unsuitable for the high current requirements of 35KV scenarios.
Can this product be used for supporting distribution networks in large new energy bases?
Sure. This product is designed specifically for large-scale new energy bases, with a rated voltage of 35KV and a breaking current of 63-80kA, suitable for the ultra high current load of new energy bases. It can adapt to the intermittent and fluctuating load characteristics of photovoltaic and wind power, and can be responsible for the collection, transmission control, and protection of power in energy bases. It can quickly cut off fault currents, avoid faults affecting power output, and support intelligent monitoring and scheduling. It can seamlessly integrate with new energy control systems to ensure efficient and stable operation of energy bases, and meet the needs of million kilowatt level new energy bases.
What are the advantages of closing bounce time ≤ 1ms compared to ordinary models?
The closing bounce time is ≤ 1ms, which is much better than ordinary VS1 circuit breakers (≤ 1.5ms and above). There are two core advantages: firstly, it minimizes contact wear and arc erosion, reduces contact resistance, avoids contact overheating and burning, 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 caused by closing bounce, greatly improving the reliability of closing and opening, especially suitable for high current scenarios, which can effectively prevent 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, a top-level reinforced insulation solution needs to be customized: optimizing the thickness of the insulation cylinder, significantly increasing the anti creepage distance, double sealing and strengthening electrical components, using low-pressure resistant insulation materials to avoid insulation performance degradation and arc extinguishing difficulties caused by high-altitude and low-pressure conditions; For high-altitude (below -40 ℃) scenarios, it is necessary to customize a low-temperature adaptive operating mechanism, select low-temperature resistant lubricating grease and components, install anti condensation and anti freezing devices to avoid mechanical jamming and insufficient energy storage caused by low temperatures, and ensure the normal operation of equipment in high-altitude environments.
What is the specific function of the trend analysis and warning function of the intelligent monitoring system?
This function can collect real-time device operating parameters (current, voltage, temperature, vacuum degree, etc.), and achieve trend 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 core 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 power supply reliability requirements.
Related Applications
35KV High Voltage Distribution Network Main Line: Used for controlling and protecting the main lines of 35KV high voltage distribution networks in cities and counties. As the core backbone equipment of high voltage distribution networks, it is responsible for power transmission, load distribution, and fault protection of the main lines. It can reliably carry the total load of all users in the area, quickly cut off fault currents such as short circuits, overloads, and grounding, prevent faults from spreading to the entire distribution network, ensure the power supply reliability and stability of regional high voltage distribution networks, and adapt to the trend of upgrading and developing urban intelligent distribution networks.
In and out circuit of large substations: Used for 35KV in and out circuit of 220KV and 110KV large substations, it is the core hub of power transmission between substations, high-voltage distribution networks, and large industrial enterprises. It is responsible for the control, overload and short-circuit protection, and reclosing operation of the in and out circuit. It can reliably carry the high current load output by substations, quickly handle line faults, ensure the safety and stability of power transmission, and adapt to the automation and unmanned operation and maintenance needs of substations.
Supporting Distribution Network for Large New Energy Bases: Used for supporting high-voltage distribution networks for large-scale energy bases such as million kilowatt photovoltaic power stations, large wind farms, and hydropower stations. 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 integrate 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, high equipment power, and 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 ensure safe and efficient production of enterprises.
