China Zn28 (A) -12kv High Voltage Indoor Vacuum Circuit Switch 50Hz Vacuum Circuit Breaker Vcb, Find details about China Vacuum Circuit Breaker, Indoor Vcb from Zn28 (A) -12kv High Voltage Indoor Vacuum Circuit Switch 50Hz Vacuum Circuit Breaker Vcb
Description:
| 1. The vacuum arcing chamber of this VCB is of middle sealed-in longitudinal magnetic field type. The main shaft, opening spring and buffer are all installed on the framework. There are 6 pieces of insulator switch fixed with stable and moving trestles, then the vacuum arcing chamber is installed between the stable and moving trestles. The main shaft connects with moving conducting bar of vacuum arcing chamber through crutch arm of insulating bar. Two pieces of insulation bars connect two ends of stable and moving trestles to form a whole so as to improve the rigidity |
| 2. When the stable and moving contact is open by the performance of the operation mechanism, the arc in vacuum occurs between contact, then extinct when the current reaches at zero. Due to the special contact structure, during the arcing period, there is the longitudinal magnetic field between contact so that arc lies evenly on the surface of contact and maintain a low arc voltage; in Vacuum arc-extinction chamber, the medium intensity recover at high speed, as well as small arc power and electro corrosion ratio after arc extinction, thus to improve the braking capability on short-circuit current and electric life |
| 3. The VCB applies to rigorous occasions such as high altitude and frequent operation |
| 4. As long as the VCB accord the mechanical characteristics, the client may select adaptable electromagnet or spring operation mechanism according to special situation. |
| No. | Item | Unit | Data | ||||
| 1 | Rated short-circuit breaking current | kA | 12.5kA | 20kA | 25kA | 31.5kA | 40kA |
| 2 | Rated voltage | kV | 12 | ||||
| 3 | Rated current | kA | 630 | 630 1000 1250 | 1000 1250 1600 | 1250 1600 2000 2500 | 1600 2000 2500 3150 |
| 4 | 4s rated short-time withstand current | kA | 12.5 | 20 | 25 | 31.5 | 40 |
| 5 | Rated short-circuit making current | kA | 31.5 | 50 | 63 | 80 | 100 |
| 6 | Rated peak withstand current | KA | 31.5 | 50 | 63 | 80 | 100 |
| 7 | Rated short-circuit breaking time | Times | 50 | 50 | 50 | 50 | 30 |
| 8 | Mechanical life | Times | 20000 | ||||
| 9 | Full breaking time | ms | 50 | ||||
| 10 | Rated operation sequence | 0-0.3S-CO-180s-CO | O-180s-CO-180s-CO | ||||
| 11 | 1min. PF withstand voltage(virtual value) | kV | 42 | ||||
| 12 | Lightning impulse withstand voltage(peak) | kV | 75 | ||||
| 13 | Model of operation mechanism | Follow client's requirement | |||||
Zhejiang ZheGui Electric Co., Ltd established in 2013. We are located in Zhejiang with convenient transportation access and developed electrical market. We are group of private enterprises that hold the production license issued by the former ministry of energy and ministry mechanical and electrical engineering.
The company has nearly 60 million fixed assets and more than 60 employees, covering 23133 square meters. We are specialized in R&D production of complete switchgear of high and low voltage equipment such as prefabricated substation, distribution cabinet/box, drawer cabinet, ring network cabinet, inflatable cabinet, etc.
We owns three CNC bending machine, CNC shearing machine, CNC laser cutting machine and a series of advanced production equipment to further optimized the product structure and improve the efficiency of production. After nearly 7 years of development, it has passed ISO 9001-2000 quality system certification. All items produced by our own factory, so our advantages are: reliable quality and reasonable price. Gather the world's energy to delight your business. It's honorable for Zhegui to share your progress, brilliance and success!