VTG-24

Overview

VTG-24 indoor high voltage AC vacuum circuit breaker (hereinafter referred to circuit breaker) is used in thethree-phase AC 50Hz indoor place with the rated voltage 24kV as the protection and control of the electricafacilities in the industrial mines, enterprises, power plant, and power substation, especially suitable formetallurgy, chemical, and coal industries.Circuit breaker complies with the GB/T 1984 High Voltage AC Circuit Breaker, GB/T 11022 Commonspecifications for high-voltage switchgear and controlgear standards, DL/T 402 High Voltage AC CircuitBreaker, and related IEC standards.
The operating mechanism of circuit breaker is of the integrated design type. The operating mechanism andthe primary circuit are front and back arranged, and they can be used as fixed installation unit (fxed cabinet)and also form a cart unit (cart cabinet) together with the propulsion mechanism (chassis truck).

Type Designation

Technical Parameters

Operating conditions

4.1 Normal Working Conditions
4.1.1 Ambient temperature: The max. temperature is +40C, and the min. temperature is -15°C (storage andtransport at -30'C are allowed);
4.1.2 Environmental humidity: The daily mean relative humidity is < 95%, the monthly mean relativehumidity is < 90%; the daily mean vapor pressure is <2.2 x 10- 3MPa, and the monthly mean vaporpressure is< 1.8 x 10-3 MPa:
4.1.3 The altitude does not exceed 1000m (customization is required if greater than 1000m),
4.1.4 The earthquake intensity does not exceed 8 degrees4.1.5 There is no water drops, no flammable materials, no chemical corrosive gas and no severe vibration atthe site.
4.2 If the normal working conditions are not met, please contact the manufacturing unit

Features

5.1 Excellent overall performance of circuit breaker
5.1.1 The arc extinguish chamber and operating mechanism of circuit breaker are conhigured at front and rearand are connected as a whole structure through the transmission mechanism.5.1.2 The mechanical life is up to 10,000 times and above
5.2 The advanced vacuum arc extinguish chamber uses copper-chromium alloy contact and longitudinamagnetic feld contact structure
5.3 ntegrally cast solid-sealed poles
5.3.1 The solid-sealed pole is formed with new APG process,
5.3.2 The vacuum arc extinguish chamber is solid-sealed in the pole to efectively prevent damage and surfacecontamination due to other obiects, and to signifcantly reduce the overall size of circuit breaker
5.4 Flexible and simple operating mechanism5.4.1 The operating mechanism is of the spring energy storage type with electric and manual energy storage
funct1ons.
5.4.2 During the operation of circuit breaker, the energy of the energy storage spring is transferred to the linkgear through output cam, and then to the moving contact part through the link gear;5.4.3 With advanced and reasonable damping device, the opening rebound force is small5.4.4 No adjustment is required with very little maintenance

Outline and Installation Dimensions

Electrical Schematic Diagram