VEM1 Side-mounted Vacuum Circuit Breaker
VEM1-12 indoor AC high voltage vacuum circuit breaker is a new generation of medium voltage switching element products independently developed by our company. Technically, it has absorbed foreign advanced technology and combined with our company's many years of experience in manufacturing circuit breakers. The main circuit of the circuit breaker is arranged longitudinally, adopts advanced spring operating mechanism and solid-sealed pole technology, and has the characteristics of compact structure, high reliability, long life, and safety and maintenance-free during the service life.
VEM1-12 vacuum circuit breaker is suitable for indoor switchgear of three-phase AC 50Hz, 12kV power system, as the control and protection unit of electrical facilities in residential quarters, industrial and mining enterprises, power plants and substations. Due to the special advantages of vacuum circuit breakers, it is especially suitable for frequent operation of rated working current or places where short-circuit current is broken for many times.
- Product Description
- Technical features
- Main technical parameters
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- Commodity name: VEM1 Side-mounted Vacuum Circuit Breaker
VEM1-12 indoor AC high voltage vacuum circuit breaker is a new generation of medium voltage switching element products independently developed by our company. Technically, it has absorbed foreign advanced technology and combined with our company's many years of experience in manufacturing circuit breakers. The main circuit of the circuit breaker is arranged longitudinally, adopts advanced spring operating mechanism and solid-sealed pole technology, and has the characteristics of compact structure, high reliability, long life, and safety and maintenance-free during the service life.
VEM1-12 vacuum circuit breaker is suitable for indoor switchgear of three-phase AC 50Hz, 12kV power system, as the control and protection unit of electrical facilities in residential quarters, industrial and mining enterprises, power plants and substations. Due to the special advantages of vacuum circuit breakers, it is especially suitable for frequent operation of rated working current or places where short-circuit current is broken for many times.
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According to the standard
GB/T 1984-2014 High-voltage AC Circuit BreakersJB 3855-1996 3.6 ~ 40.5kV Indoor High Voltage AC Vacuum Circuit Breaker
DL/T 403-2016 Technical Conditions for Ordering 12 ~ 40.5kV High Voltage Vacuum Circuit Breaker
Comply with the relevant requirements of the IEC62271-100
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Project Unit Data Rated voltage kV 12 Rated insulation level Rated power frequency withstand voltage (Imin) 42 Rated lightning impulse withstand voltage (peak) 75 Rated frequency Hz 50 Rated current A 630 1250 Rated short-circuit breaking current kA 25 31. 5 Rated short-time withstand current I/O 25/4 31.5/4 Rated short-circuit closing current kA 63 80 Rated peak withstand current kA 63 80 Cumulative times of rated short-circuit current breaking Times 30 Rated operating sequence Points -0. 3s-combined points-18OS-combined points Mechanical life Times 10000 Rated breaking current of single capacitor bank A 630 Rated back-to-back capacitor bank breaking current A 400
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