ZHEJIANG XINKOU POWER EQUIPMENT CO.,LTD
| Supply Ability | 100 Piece/Pieces per Month |
| Packaging Details | EXPORTING PACKING |
| Standard | IEC |
| Rated Current | 630A,1250A |
| Rated Voltage | 12KV,15kV,24KV |
| Mechanical life | 1000 |
| Port | NINGBO |
| Place of Origin | Zhejiang, China |
| Brand Name | XK |
| Model Number | ZW32-12~24KV |
| Certification | ISO9001 / GB / IEC |
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Product Specification
| Supply Ability | 100 Piece/Pieces per Month | Packaging Details | EXPORTING PACKING |
| Standard | IEC | Rated Current | 630A,1250A |
| Rated Voltage | 12KV,15kV,24KV | Mechanical life | 1000 |
| Port | NINGBO | Place of Origin | Zhejiang, China |
| Brand Name | XK | Model Number | ZW32-12~24KV |
| Certification | ISO9001 / GB / IEC | ||
| High Light | vcb circuit breaker ，indoor vcb panel | ||
Operation of vacuum circuit breaker
The main aim of any circuit breaker is to quench arc during current zero crossing, by establishing high dielectric strength in between the contacts so that reestablishment of arc after current zero becomes impossible. The dielectric strength of vacuum is eight times greater than that of air and four times greater than that of SF6 gas. This high dielectric strength makes it possible to quench a vacuum arc within very small contact gap. For short contact gap, low
contact mass and no compression of medium the drive energy required in vacuum circuit breaker is minimum. When two face to face contact areas are just being separated to each other, they are not done so instantly. Instead, as the contact area on the contact face is being reduced and ultimately comes to a point and then they are finally de-touched. This happens in a fraction of micro second. At this instant of de-touching of contacts in a vacuum, the current through the contacts concentrated on that last contact point on the contact surface and makes a hot spot there. As the medium is vacuum, the metal on the contact surface gets easily vaporized due to that hot spot and create a conducting media for arc path. Therefore, the material constituting the arc is very small and thus a feeble arc is established even with high current interruption. The arc will be initiated and continues until the onset of next current zero. Th figure below shows the cross section assembly of a VCB.
| 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：
Verified Supplier
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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