Indoor high-voltage vacuum circuit breakerDetailed product description：

main purpose
The VGP-24 indoor high-voltage vacuum circuit breaker is an indoor high-voltage switchgear with a rated voltage of 24KV and three-phase AC 50HZ. It is suitable for control or protection switches in power plants, substations, industrial and mining enterprises and other transmission and distribution systems, especially for breaking important loads and frequent operations.
The manufacturing of circuit breakers complies with China's national standards GB1984-2003 "AC High Voltage Circuit Breakers", JB3855-1966 "Technical Conditions for Ordering 3.6-40.5KV Indoor Vacuum Circuit Breakers" and relevant IEC standards, and has reliable interlocking function.
The operating mechanism of the circuit breaker is a spring energy storage type, which can be operated by AC or DC energy storage or manually operated.
The circuit breaker can also be equipped with a long-life permanent magnet operating mechanism, with a mechanical lifespan of up to 100000 times, and can be used in extremely frequent operating situations.
The circuit breaker is designed in a front and rear split structure, which can be used as a fixed installation unit or as a mid mounted unit for use with chassis vehicles.

Normal working environment
1. Altitude: ≤ 2000m,>2000m requires special customization
2. Environmental humidity: maximum+40 ℃, minimum -25 ℃
3. Relative temperature: The daily average is not greater than 95%, and the monthly average is not greater than 90%.
4. Earthquake intensity: below level 8
5. Places without fire, explosion, corrosive gases, and severe vibrations.

Main technical parameters of VGP-24KV indoor high-voltage vacuum circuit breaker

project	unit	parameter
rated voltage	KV	twenty-four
rated frequency	HZ	fifty
rated current	A	630 1250 1600
Rated short-circuit breaking current	KA	20 25 31.5
Rated short-circuit closing current (peak)	KA	50 63 80
Rated short-circuit duration	S	four
Rated short-circuit breaking current breaking times	time	twenty
Rated operating sequence		0-0.3s-CO-180s-CO
Rated lightning impulse withstand voltage (peak)	KV	one hundred and twenty-five
1-minute power frequency withstand voltage	KV	sixty-five
closing time	ms	≤100
Opening time	ms	≤50
mechanical life	time	twenty thousand
Rated energy storage and operating voltage	V	≌220/110
Cut off time	ms	≤65
Energy storage time	s	≤10

Mechanical characteristic adjustment parameters of VGP-24KV indoor high-voltage vacuum circuit breaker

project	unit	parameter
Contact opening distance	mm	15±1
Contact overtravel	mm	3.5±0.5
Opening speed	m/s	0.9-1.2
closing speed	m/s	0.5-0.8
Contact closing bounce time	ms	≤2
Rated contact pressure	N	20KA(2000≤200) 25KA(2400±200) 31.4KA(3100±200)
Three phase asynchronous opening and closing	ms	≤2

Appearance and installation dimensions

VGP-24KV Indoor High Voltage Vacuum Circuit Breaker