ZHEJIANG XINKOU POWER EQUIPMENT CO.,LTD
Progress, Sincerity, Innovation
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WORKING VACUUM CIRCUIT BREAKER
When the fault occurs in the system, the contacts of the breaker are moved apart and hence the arc is developed between them. When the current carrying contacts are pulled apart, the temperature of their connecting parts is very high due to which ionization occurs. Due to the ionization, the contact space is filled with vapour of positive ions which is discharged from the contact material.
The density of vapour depends on the current in the arcing. Due to the decreasing mode of current wave their rate of release of vapour fall and after the current zero, the medium regains its dielectric strength provided vapour density around the contacts reduced. Hence, the arc does not restrike again because the metal vapour is quickly removed from the contact zone.
| 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 | ||
INTRODUCTION
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 switches, disconnecting switches, drop out fuse cutour, lightning arrester, etc. All products comply with the requirements of GB, IEC, ANSI and other international standard.
SERVICE
We have a very professional sales team which can offer you the best service and answer you very professional questions, so you can feel very comfortable before you buy machine from us. As is known to all of us, after-sale service is the most important to all industries. Our company has been trying our best to build a very professional and high-caliber after-sale service team which can solve all problems efficiently in the future.
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.