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| Categories | Vacuum Circuit Breaker |
|---|---|
| Place of Origin: | Zhejiang, China |
| Brand Name: | XK |
| Model Number: | ZN63-12KV/630A |
| Certification: | ISO9001 / GB / IEC |
| Supply Ability: | 100 Piece/Pieces per Month |
| Packaging Details: | EXPORTING PACKING |
| MOQ: | 1 Piece/Pieces |
| Price: | Negotiation |
| Standard: | GBJ, JB,IEC |
| Rated Current: | 630A,1250A, 1600A |
| Rated Voltage: | 12KV |
| Mechanical life: | 10000 |
| Port: | NINGBO |
VACUUM ARC RECOVERY OF VACUUM CIRCUIT BREAKER
High vacuum possesses extremely high dielectric strength. At zero
current the arc is extinguished very quickly, and the dielectric
strength is established very quickly. This return of dielectric
strength is because of the vaporized metal which is localized
between the contacts diffuses rapidly due to the absence of gas
molecules. After arc interruption, the recovery strength during the
first few microseconds is 1 kV/µs second for an arc current of
100A.
Because of the above-mentioned attribute of vacuum circuit breaker, it is capable of handling the severe recovery transients associated with short-line faults without any difficulty.
| Item | Unit | Data | |||
| Rated voltage | KV | 12 | |||
| Maximum working voltage | KV | 12 | |||
| Rated Current | A | 630-1250 | 630-1600 | 630-1600 | |
| Rated short circuit breaking current | KA | 20 | 25 | 31.5 | |
| Rated short-circuit switching current | KA | 50 | 63 | 80 | |
| Rated peak withstand current | KA | 50 | 63 | 80 | |
| 4S rated short-circuit withstand current | KA | 20 | 25 | 31.5 | |
| Rated insulation level | 1min Power frequency withstand voltage | KV | 42(fracture 48) | ||
| lmpulse withstand voltage | KV | 75(fracture 84) | |||
| Rated short-circuit current breaking times | Times | 50 | |||
| Rated Operating Mechanism Closing Voltage(DC) | V | AC,DC 110,220 | |||
| Rated Operating Mechanism Opening Voltage(DC) | V | AC,DC 110,220 | |||
| Contact opening distance | mm | 11±1 | |||
| Overtravel(the length of contact spring compression) | mm | 3.5±0.5 | |||
| Closing/Opening Time Difference Among Three Phase | ms | ≤2 | |||
| Contact closing bounce time | ms | ≤2 | |||
| Average opening speed | m/s | 0.9-1.2 | |||
| Average closing speed | m/s | 0.5-0.8 | |||
| Tripping Time | Maximum operating voltage | S | ≤0.05 | ||
| Minimum operating voltage | S | ≤0.08 | |||
| Closing time | S | 0.1 | |||
| The main circuit resistance of each phase | 630≤50 | 1250≤45 | 1600≤40 | ||
| Allowed Consumpted thickness of Contacts | mm | 3 | |||
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.
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