| Customization: | Available |
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| Breaking Capacity: | High Voltage Circuit Breakers |
| Operation: | Electric Type |
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ZN28G/ZN28A-12 Series Side Mounted Indoor High Voltage Vacuum Circuit Breaker
ZN28G ZN28A-12 series indoor vacuum circuit breaker is a three-phase AC 50Hz,rated voltage of 12kV indoor switchgear,control and protection for industrial and mining enterprise,power plants and substations,electrical faclties,and for frequent operation place
AMBIENT CONDITION
1.the ambient temperature:not higher than +40 C,not less
than 10C(-30Cis permited storage);
2.the altitude:≤1000M;
3. Relative humidity: daily average value is not greater than
g5%,monthly average is not greater than 90%;air relative
humidity on average less than 2210-3Mpa,on average
less than1.810-3Mpa.
4.The surrounding air is not corrosive and flammable gas,
steam and other significant polution;
5.Earthquake intensity:≤8 degree.
Product feature
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 are 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 open by the performance of operation mechanism, the arc in vacuum occur between contact, then extinct when the current reach at zero. Due to the special contact structure, during the arcing period, there is 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 electrocorrosion ratio after arc extinction, thus to improve the breaking 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 to the mechanical characteristics, the client may select adaptable electromagnet or spring
operation mechanism according to special situation.
Main technical parameter
| Item | Unit | Parameters | ||
| Rated voltage | KV | 12 | ||
| Rated current | A | 630-3150 | ||
| Rated short-circuit breaking current | KA |
20 | 31.5 | 40 |
| Rated short-circuit closing current | KA |
50 | 80 | 100 |
| Rated dynamic steady electric current(peak) | KA |
50 | 80 | 100 |
| Rated thermal stabity current(RMS) | KA |
20 | 31.5 | 40 |
| Rated thermal stabiity time | S | 4 | ||
| The breaking times of rated short circuit breaking current | Times |
30(50) | ||
| Open time of CD10 electromagnetic operating mechanism | mS |
<80 | ||
| Rated operating sequence | KV | O-0.3S-CO-180S-CO | ||
| A minute power frequency withstand voltage(RMS) | KV |
The phase 42,section 48 | ||
| Lightning shock pressure | Times |
The phase 75,section 85 | ||
| Mechanical life | 10000 | |||
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Note:20KA,31.5KA t=0.3s t1=180sE2 class 40KA t=180s t1=180s
|
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Zhejiang Xianghu Technology Co., Ltd.is a company specializing in the production of high and low voltage switch power transmission and distribution equipment and high, low voltage electrical components, one of the professional production enterprises, the production of all fully insulated and fully sealed inflatable cabinet, intelligent solid insulation ring main unit, outdoor high voltage cable branch box, box-type substation, etc. Product quality is stable, reliable, It is deeply trusted and approved by the customers.
Manufacturing of the main products are 10kv High tension Mutual inductor,10 kv transformer, YBW box-type substation, KYN61-40.5, KYN28A - 24, KYN28A - 12, XGN2-10, HXGN-10 high voltage switchgear, XGN ring net cabinet, SHSRM inflatable ring main unit, SHSG solid ring main unit, MNS, GCS, GCS, GGD, XL and other transmission and distribution equipment.
For a long time also for all kinds of metallurgy, shipbuilding, electric power, mining, and intelligent buildings, high-rise buildings, hospitals, schools and other industries to provide high quality power transmission and distribution of complete sets of equipment and electrical control equipment. The company has a strong technical force, sophisticated technology and sophisticated testing methods, and the products sell well across the country. Deeply appreciated and praised by the broad masses of users.
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