Controlled vacuum circuit breaker EX-ВВС SMARTIC 10-20/1000 type

Controlled vacuum circuit breaker EX-ВВС SMARTIC 10-20/1000 type
  • Frequency
    50 Hz
  • Rated voltage
    10 kV
  • Rated amperage
    1000 A
  • Average lifetime
    30 years

SMARTIC triggered vacuum switch has been created as a result of years of research in electricity, automatic control, electronics and electrical engineering. The switch uses a modern concept of controlled switching, which is “swithcing different load types using special algorithms with preset dynamics for the main contacts of vacuum arc chutes”, to reduce switching surges affecting various loads such as transformers, electric motors, cable lines, capacitor banks etc. It also reduces inrush current when turning on transformers and capacitor banks, expands current range and increases commutation life of used vacuum arc chutes (VAC).

Vacuum circuit breakers specifications
ParameterValue
Input voltage frequency50 Hz
Rated voltage10 kV
Maximum operating voltage12 kV
Test voltage:
— one-minute, 50 Hz
— full lightning impulse

42 kV
75 kV
Rated amperage1000 A
Rated voltage of auxiliary contacts, (AC/DC)250/30 V
Rated AC amperage of auxiliary contacts5 A
Switching capacity:
— arc chute breaking rated current
— normalized percentage of DC component of the breaking current

20 кА
40%
Average lifetime30 years
Photo

Appointment

Triggered vacuum switch is used any kind of load commutation (inductive — electric motors, transformers, capacity — capacitor banks, etc.) in 10 kV power supply networks. SMARTIC consumers are mining facilities, oil pumping stations and refineries, metallurgical plants and other industrial enterprises, 10 kV public power supply networks, etc.

The switch has an separate drive for each phase and mounted microprocessor power supply unit, wich makes installation and maintenance of high-voltage equipment convenient.

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SMARTIC triggered vacuum switch has been created as a result of years of research in electricity, automatic control, electronics and electrical engineering. The switch uses a modern concept of controlled switching, which is “swithcing different load types using special algorithms with preset dynamics for the main contacts of vacuum arc chutes”, to reduce switching surges affecting various loads such as transformers, electric motors, cable lines, capacitor banks etc. It also reduces inrush current when turning on transformers and capacitor banks, expands current range and increases commutation life of used vacuum arc chutes (VAC).

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Alternating current arc extinction is carried out in vacuum extinguishing chamber (VEC) by switch opening in high vacuum (residual pressure is about 10-6 mm mc). Metal vapor is current carrier when arcing. Due to the practical absence of environment in intercontact interval, metal vapor condensation at the moment of current passing through natural zero is carried out within extremely short time (10-5 s), after that electric strength of VEC is fast recovered. Vacuum electric strength is about 30 kV/mm that guarantees current interruption at contact divergence more than 1 mm.

Modern construction of VEC with axial-radial magnetic field is used in the circuit breaker. Placed in such a field, arc is always in diffusive state that decrease the wear which is not more than 1 mm after the switch resource is over.

Vacuum circuit breaker consists of three poles and a case where electromagnetic drives are placed. Electromagnetic drives can be manufactured with a magnetic catch or without it.

Major units of BB for current up to 1000 A are placed inside the closed insulation case made of strength and arc-resistant material; this protects pole elements from mechanical damage and electric arc impact of short circuit current.

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Alternating current arc extinction is carried out in vacuum extinguishing chamber (VEC) by switch opening in high vacuum (residual pressure is about 10-6 mm mc). Metal vapor is current carrier when arcing. Due to the practical absence of environment in intercontact interval, metal vapor condensation at the moment of current passing through natural zero is carried out within extremely short time (10-5 s), after that electric strength of VEC is fast recovered. Vacuum electric strength is about 30 kV/mm that guarantees current interruption at contact divergence more than 1 mm.

Modern construction of VEC with axial-radial magnetic field is used in the circuit breaker. Placed in such a field, arc is always in diffusive state that decrease the wear which is not more than 1 mm after the switch resource is over.

Vacuum circuit breaker consists of three poles and a case where electromagnetic drives are placed. Electromagnetic drives can be manufactured with a magnetic catch or without it.

Major units of BB for current up to 1000 A are placed inside the closed insulation case made of strength and arc-resistant material; this protects pole elements from mechanical damage and electric arc impact of short circuit current.

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Triggered vacuum switches