Size: 2225*2585mm
Standard: IEC 60099
Application: Vacuum circuit breaker is a special type of circuit breaker, whose internal core components use vacuum for insulation and arc extinguishing.
Shanghai Metal Corporation is a leading Vacuum Circuit Breaker manufacturer and supplier.
Vacuum circuit breaker is an indoor distribution device in a 3-10kV, 50Hz three-phase AC system, which can be used for the protection and control of electrical equipment in industrial and mining enterprises, power plants, and substations. It is particularly suitable for use in places that require oil-free, less maintenance, and frequent operation. Circuit breakers can be configured in central cabinets, double-layer cabinets, and fixed cabinets to control and protect high-voltage electrical equipment.
Vacuum circuit breakers mainly consist of three parts: vacuum arc extinguishing chamber, electromagnetic or spring operating mechanism, bracket, base, insulation support component, insulator, and other components. It plays a very important role in the power system, controlling and protecting circuits. When faults such as short circuits, overload, and voltage loss occur in the circuit, the vacuum circuit breaker can quickly cut off the current, protecting the safety of the circuit and equipment. In addition, vacuum circuit breakers can also achieve remote control and automated operation, providing convenience for the intelligence and automation of the power system.
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Technical Information of Vacuum Circuit Breaker:
Item |
Unit |
Data |
||
Rated voltage |
KV |
40.5 |
||
Rated power frequency withstand voltage 1min |
KV |
95 |
||
Rated lightning impulse withstand voltage |
KV |
185 |
||
Rated frequency |
Hz |
50 |
||
Rated current |
A |
630, 1250, 1600, 2000, 2500 |
||
Rated short-time withstand current |
KA |
20 |
25 |
31.5 |
Rated peak withstand current |
KA |
50 |
63 |
80 |
Rated short-circuit breaking current |
KA |
20 |
25 |
31.5 |
Rated short-circuit making current |
KA |
50 |
63 |
80 |
Rated short-circuit duration |
s |
4 |
||
DC component of rated short-circuit breaking current |
|
51 |
||
Peak value of transient recovery voltage (TRV) |
KV |
114 |
||
Rated power supply voltage of closing and opening devices and auxiliary circuits |
V |
DC/AC 220V, DC/AC 110V |
||
Rated operating sequence |
|
O-0.3s-CO-15s-CO |
||
Opening time |
ms |
20~50 |
||
Closing time |
ms |
30~80 |
||
DC time constant of rated short-circuit breaking current |
ms |
45 |
||
Rated cable charging breaking current |
A |
50 |
||
Service life |
|
E2-C2-M2 (10000) |
||
Rated short-circuit breaking current breaking times |
times |
20 |
Packaging of Vacuum Circuit Breaker:
Shanghai Metal Products are packed and labeled according to the regulations and customer's requests. Great care is taken to avoid any damage which might be caused during storage or transportation. In addition, clear labels are tagged on the outside of the packages for easy identification of the product I. D. and quality information.
1)Shanghai Metal Standard
2)Customization