| Breaking Capacity: | High Voltage Circuit Breakers |
|---|---|
| Operation: | Energy-storage Type |
| Speed: | Normal Type Circuit Breaker |
| Arc-extinguishing Medium: | Vacuum |
| Installation: | Insert |
| Structure: | Vcb |
| Customization: |
|---|
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VBI type vacuum circuit breaker conforms to national standard GB1984-2003 HV Vacuum Circuit Breaker, JB3855-1996<3.6-40.5kV indoor AC high voltage vacuum circuit breaker>, DL/T403-2000<12kv-40.5kv HV vacuum circuit breaker ordering technical conditions>, and IEC62271-100:2001 high voltage AC circuit breaker relevant regulations.
VBI-12 Indoor High Voltage Vacuum Circuit Breaker is three-phase AC 50Hz, Rated voltage of 12kV indoor device, For industrial and mining enterprises, power plants and substations as electrical equipment control and protection purposes, and for frequent operation of the place.
Structural features
a. VBI-12 indoor high-voltage vacuum circuit breaker equipped with intermediate sealed ceramic vacuum interrupter, the use of copper-chromium contact material, cup-like longitudinal magnetic field contact structure, the contact of the electric wear rate is small, long electrical life , The pressure level of the contact is high, the dielectric strength of the dielectric is stable, the arc is restored quickly, the cut-off level is low and the breaking ability is strong.
b.VBI-12 indoor high-voltage vacuum circuit breaker overall structure of the operating mechanism and the use of arc extinguishing system in the form of the main conductive circuit part of the three-phase floor structure, vacuum interrupter longitudinal installation of a tubular installation tube, The tube is made of epoxy resin using APG process, so it is particularly resistant to creeping. This structural design, greatly reducing the accumulation of dust and then the arc chamber surface, not only can prevent the vacuum interrupter by external factors damage, and can ensure that even in the hot and humid and serious pollution environment, the voltage effect can also show a high resistance state.
c. The operating mechanism for the layout of the spring energy storage mechanism, with manual energy storage and electric energy storage function, the operating mechanism placed in the chassis before the arc chamber, the chassis was divided into five middle partition five assembly space, In the meantime, the energy storage part, the transmission part, the tripping part and the buffer part of the operating mechanism are respectively installed. The VBI-12 vacuum circuit breaker will arrange the arc chamber and the operating mechanism to form a unified whole, that is, The structural design allows the operating performance of the operating mechanism to be more consistent with the required performance of the interrupter opening and closing, reducing unnecessary intermediate transmission links, reducing energy consumption and noise, making the operating performance of the VBI-12 circuit breaker more Reliable, VBI-12 circuit breaker can be loaded into the hand-car switchgear, can also be loaded into a fixed switchgear.
d. The circuit breaker has the advantages of long service life, simple maintenance, no pollution, no explosion hazard and low noise, and is suitable for the harsh working conditions such as frequent operation.
Applying ambient conditions
a. Ambient temperature is not greater than +40 ºC, not less than -10 ºC (allow storage at -30 ºC);
b .altitude below 1000m;
c. Daily average daily relative humidity of not more than 95%, the monthly average of not more than 90%; saturated vapor pressure daily average of not more than 2.2 * 10-3MPa, the monthly average of not less than 1.8 * 10-2MPa, When the temperature drops sharply, it may condense;
d. earthquake intensity does not exceed 8;
e. No fire, explosion, serious pollution, chemical corrosion and severe vibration of the place.
Main technical parameters
| NO. | Name | Unit | Data | |
| 1 | Rated voltage | KV | 12 | |
| 2 | Rated insulation level | 1min Power frequency withstand voltage | 42 | |
| Rated lightning impulse withstand voltage | 75 | |||
| 3 | Rated current | A | 630 1250 2000 3150 | |
| 4 | Rated short circuit breaking current | KA | 20 25 31.5 40 | |
| 5 | Rated short-circuit opening and closing current (peak) | 50 63 80 100 | ||
| 6 | Rated dynamic current (peak) | 50 63 80 100 | ||
| 7 | Rated thermal stability current (rms) | 20 25 31.5 40 | ||
| 8 | Rated short circuit current breaking times | time | 50 20 | |
| 9 | Rated thermal stability time | S | 4 | |
| 10 | Rated operating sequence | / | O-0.3S-CO-180S-CO | |
| 11 | Mechanical life | time | 10000 | |
| 12 | Rated single capacitor bank breaking current | A | 630 | |
| 13 | Rated back to back capacitor bank breaking current | 400 | ||
FAQ
Q: Could I have prices of your products?
A: Welcome. Please feel free to send us inquiry here. We will reply you within 24 hours.
Q: Can I get a sample before the bulk order?
A: Yes, we welcome sample order to test and check quality.Mixed samples are acceptable.
Q: Can we print our logo/ company name on products?
A: Yes, of course, we accept OEM, then need you to provide brand authorization to us
Q:Do you accept product customization?
A:Yes, of course, please provide specific drawings or parameters, we will quote you after evaluation
Q: What is the lead time?
A: The lead time depends on the quantities ordered, generally within 7-20 days after receiving the payment.
Q: What is your Trade Terms?
A: We accept EXW, FOB, CIF, FCA, etc.
Q: What is your payment method?
A: We accept T/T, Western Union, Paypal, irrevocable L/C at sight, etc
Q: Do you inspect the finished products?
A: Yes, each step of production and finished products will be came out inspection by QC department before shipping. And we will provide goods inspection reports for your reference before shipment
Q: How to solve the quality problems after sales?
A: Take photos of the quality problems and send to us for our checking and confirming, we will make a satisfied solution for you within 3 days.
Suppliers with verified business licenses
Audited Supplier 
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