VS1 Indoor High Voltage Vacuum Circuit Breaker (VS1 Side Mounted)Detailed product description：

Application Fields of VDm Indoor High Voltage Vacuum Circuit Breaker
VDm type indoor high-voltage vacuum circuit breakers equipped with permanent magnet operating mechanisms can be widely used in power plants, substations, as well as various monitoring and usage links. For example, power supply for chemical plants, steel mills, automated chemical plants, airports, and large buildings.
VDm type vacuum circuit breaker is a modern vacuum circuit breaker
VDm vacuum circuit breaker is the first circuit breaker in China to realize the concept of maintenance free. The application of epoxy casting sealing technology in its high lifespan vacuum arc extinguishing chamber ensures maintenance free operation of the arc extinguishing system; The high reliability permanent magnet actuator used ensures maintenance free operation of the actuator; The electronic control part abandons the traditional auxiliary switch and replaces it with a photoelectric proximity switch, and adopts a fully electronic power supply and intelligent control unit to ensure maintenance free operation of the electronic control part.

Components and characteristics of VDm type vacuum circuit breaker
MS1 permanent magnet actuator
The core part of a vacuum circuit breaker completes the opening and closing process of the contacts and maintains the opening and closing position.
Electronic control unit
Control the opening and closing, energy storage and release of vacuum circuit breakers, and achieve various flexible locking functions.
capacitor bank
A highly reliable energy storage system.
Position detector
Used to detect the on/off position of the switch.
spindle
The only pure mechanical unit used to connect the permanent magnet actuator and the vacuum arc extinguishing chamber.

Maintenance free solution for VDm indoor high-voltage vacuum circuit breaker using bistable permanent magnet technology
The VDm vacuum circuit breaker adopts MS1 type permanent magnet operating mechanism. The institution utilizes a bistable magnetic circuit system, using two excitation coils to drive the moving iron core to the corresponding limit position, and utilizing the magnetic field energy provided by high-performance permanent magnets to keep it at the limit position. Stimulating one of the excitation coils to generate a driving force greater than the remaining holding force can activate the moving iron core of the permanent magnet mechanism.
When the control system malfunctions, a manual opening device can be used to urgently disconnect the circuit breaker.
The MS1 permanent magnet actuator eliminates the complex and vulnerable mechanical devices such as energy storage and locking of traditional mechanisms, simplifies the structure, and reduces the number of parts by more than 70% compared to traditional mechanisms, greatly improving the reliability and lifespan of the mechanism. At the same time, due to the use of capacitors as the operating power supply, it also avoids the dependence of traditional mechanisms on high-capacity dedicated power supplies and the impact of auxiliary power supply fluctuations on the operational characteristics of the mechanism.
The MS1 type permanent magnet actuator with excellent performance can operate frequently for a long time and truly achieve permanent maintenance free operation.