ZHEJIANG XINKOU POWER EQUIPMENT CO.,LTD
| Supply Ability | 100 Piece/Pieces per Month |
| Packaging Details | EXPORTING PACKING |
| Name | Vacuum Circuit Breaker |
| Standard | IEC |
| Rated Current | 630A,1250A |
| Rated Voltage | 12KV,24KV |
| Mechanical life | 1000 |
| Port | NINGBO |
| Place of Origin | Zhejiang, China |
| Brand Name | XK |
| Model Number | ZW32-12/630 |
| Certification | ISO9001 / GB / IEC |
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Product Specification
| Supply Ability | 100 Piece/Pieces per Month | Packaging Details | EXPORTING PACKING |
| Name | Vacuum Circuit Breaker | Standard | IEC |
| Rated Current | 630A,1250A | Rated Voltage | 12KV,24KV |
| Mechanical life | 1000 | Port | NINGBO |
| Place of Origin | Zhejiang, China | Brand Name | XK |
| Model Number | ZW32-12/630 | Certification | ISO9001 / GB / IEC |
| High Light | vcb circuit breaker ，outdoor vcb breaker | ||
During contact separation of circuit breaker arc is formed due to ionization of particles in the medium between the contacts. Idea behind the vacuum circuit breaker is to eliminate the medium between the contacts i.e., vacuum. Every medium that has a pressure below atmospheric, which is 760 mm of Hg, is known as vacuum. Low pressures are measured in torr, where 1 torr = 1 mm of Hg. The pressures below about 10–5 torr are considered to be high vacuum.
The breakdown voltage of certain contact gap varies with the absolute pressure in the vacuum interrupters. When vacuum is used to serve the purpose of insulation, it implies that pressure of gas at which breakdown voltage becomes independent of pressure. Such a condition is believed to be realized at values of pressures from 10–4 to 10–6 torr.
Vacuum Arc:
If an arc is to be formed in vacuum it is essential that the pressure should be low because only then it approaches the ideal arc. The ideal arc should have a low pressure, when it is initiated during its burning period and after its extinction.
Arc formed in vacuum is of different type from those formed in other mediums as it is formed by the neutral atoms, ions and electrons emitted from the electrodes themselves. The cathode surface normally, is not perfectly smooth but have many micro-projections. During the separation of contacts the current will be concentrated in these micro-projections as they are last points of contact. Due to their small area of cross section the projections will suffer explosive evaporation by resistive heating and supply sufficient quantity of vapour for the arc formation.
In vacuum arc the electron emission occurs only at the cathode spots and not from the entire surface of the cathode. For this reason the vacuum arc is also known as the cold cathode arc.
| Item | Unit | Data | |||
| Rated insulation level | 1min power frequency withstand voltage | Dry | KV | 42 | 65 |
| Wet | 34 | 50 | |||
| Lightning impulse withstand voltage | 75 | 1250 | |||
| Rated short circuit breaking current | KA | 20;16;12.5 | 20;16;12.5 | ||
| Rated short circuit breaking times | Times | 30 | 30 | ||
| Rated short-circuit switching current | KA | 50 | 50 | ||
| Rated peak withstand current | |||||
| Rated short-circuit withstand current | 20 | 20 | |||
| Rated short circuit duration | S | 4 | 4 | ||
| Opening time(SHT) | Maximum operating voltage | ms | 15-50 | 15-50 | |
| Rated operating voltage | |||||
| Minimum operating voltage | 30-60 | 30-60 | |||
| Closing time | ms | 25-50 | 25-50 | ||
| Full-off time | ≤100 | ≤100 | |||
| Arcing time | 20 | 20 | |||
| Mechanical life | Times | 1000 | 1000 | ||
| Charging motor rated input power | W | 40 | 40 | ||
| Rated operating voltage and auxiliary voltage circuit | V | DC220,110,24 | DC220,110,24 | ||
| AC220,110,24 | AC220,110,24 | ||||
| Rated voltage of the storage time | S | ≤10 | ≤10 | ||
| Over current release | Rated current | A | 5 | 5 | |
| Trip current accuracy | % | ±10 | ±10 | ||
Q1. Can we have our logo or company name to be printed on your products or the package?
Yes,you can.Logo and company name can be printed on our products by silk screen printing.You can send us the artwork by email in JPEG or TIFF format.
Q2. What is lead time?
Usually 3-15 working days, On-Time delivery
Q3. Why us?
All products comply with the requirements of GB national standards, IC, ANSI and other international standards, and the requirements of company's technology standards.
Q4. How do you make our business long-term and good relationship?
1. Our high quality and competitive price are the most important factors to maintain long-term and good relation -ship with our customers.
2. Good service is our basic principle for every customers.
Q5. Can I have a visit to your factory before the order?
Sure,welcome to visit our factory.
Company Details
Business Type:
Manufacturer
Year Established:
2011
Total Annual:
5M-10M
Employee Number:
>100
Ecer Certification：
Active Member
Zhejiang Xinkou Power Equipment Co.,Ltd, is a high-tech enterprise specializing in developping, design, manufacture, sales, import and export of low voltage and high voltage electrical products. Company main products: indoor and outdoor high voltage vacuum circuit breaker, load break switch... Zhejiang Xinkou Power Equipment Co.,Ltd, is a high-tech enterprise specializing in developping, design, manufacture, sales, import and export of low voltage and high voltage electrical products. Company main products: indoor and outdoor high voltage vacuum circuit breaker, load break switch...
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