| Customization: | Available |
|---|---|
| Breaking Capacity: | Low Voltage Circuit Breakers |
| Operation: | Electric Type |
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I. Overview
Core principle: Using vacuum as the extinguishing medium,when the circuit is disconnected, the arc is quickly extinguished in the vacuum. Due to the lack of conductive medium in the vacuum environment, the extinguishing ability is extremely strong, which can effectively cut off short-circuit current and normal load current.
Applicable scenarios: Mainly installed in indoor high-voltage switchgear such as KYN28, used for power distribution systems in power plants, substations, industrial enterprises, high-rise buildings, etc., to achieve control and protection of electrical equipment such as lines, transformers, motors, etc.
Technical positioning: The rated voltage covers 12kV and 24kV, the rated current is 630A-4000A, the rated short-circuit breaking current is 20kA-50kA, and the mechanical life can reach 30000 to 100000 times (depending on the operating mechanism), meeting the conventional and complex operation requirements of medium voltage systems.
II.Product Features
1.Excellent arc extinguishing performance and safety
Advantages of vacuum arc extinguishing: The vacuum arc extinguishing chamber has no flammable or explosive media, fast arc extinguishing speed (arc duration is only within half a cycle), strong breaking ability, and rapid insulation recovery after breaking, which can effectively avoid reignition and greatly reduce the risk of fire and explosion.
Fully sealed design: The arc extinguishing chamber adopts a fully sealed structure, which is not affected by external environment (such as humidity, dust, corrosive gases), and has stable insulation performance, suitable for long-term operation in harsh environments.
2.Reliable operating mechanism design
Spring operated mechanism (mainstream): By pre compressing the spring to store energy, the energy is released during opening and closing to drive the contact action. The action is stable, the response is rapid, and the mechanical life usually reaches 30000 to 60000 times, with a long maintenance cycle.
Permanent magnet operating mechanism (upgraded version): Some models (such as VS1-12M) use a permanent magnet mechanism, which uses the magnetic force of the permanent magnet to maintain the opening and closing position. There is no mechanical lock buckle, making the action more reliable. The mechanical life can reach more than 100000 times, and the power consumption is low and the anti vibration ability is strong, suitable for scenarios with high degree of automation.
3.Flexible installation and operation methods
There are various installation forms: divided into handcart type and fixed type. The handcart type can be flexibly switched between the "working position", "testing position", and "maintenance position", making it convenient for live maintenance and quick replacement, and is the mainstream choice for switchgear; The fixed structure is compact and suitable for scenarios with limited space and low operating frequency.
Convenient operation: Supports manual operation (in emergency situations) and electric operation, and can be combined with the interlocking mechanism of the switchgear to achieve the "five protections" (preventing accidental opening and closing, accidental operation of isolation switches, and accidental entry into live compartments, etc.), ensuring safe operation.
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