VS1-12 Vacuum Circuit Breaker

VS1 series indoor high voltage vacuum circuit breaker (hereinafter referred to as VCB) is used for 12kV and 50Hz three-phase AC power systems and the rated current is 630A ~ 4000A. This type of VCB is widely applied in industrial and mining, enterprises, power plants, substations, and other power systems, controlling and protecting cables, overhead lines, changers, generators, capacitor banks, motors, etc. The VCB is matched with the KYN28A-12 type switch-gear, and can also be installed in XGN2 fixed switch-gear. VCB complies with GB1984, JB3855, DL403-2000, and IEC62271-100 standards with performance reaching C2-E2-M2 class.

Environment service condition

A) Altitude: 1000m and below.

B) Ambient temperature: not higher than + 40℃, not lower than - 15℃ (storage and transportation at - 30℃ is allowed).

C) Relative humidity: daily average ≤ 95%, monthly average ≤ 90%, daily average of saturated steam pressure ≤ 2.2×10-3Mpa, monthly average ≤ 1.8 × 10-3Mpa. Condensation may occur when the temperature drops sharply in the high humidity period.

D) Seismic intensity: no more than 8 degrees.

E) No water drop, steam, combustible gas, fire, explosion hazard, chemical corrosion, and severe vibration.

Product structure​​​​​​​

This kind of VCB adopts a front and rear structure, VIs were installed in front and operating mechanism is rear, and the main circuit adopts a three-phase earthing structure. This design could make VI match better to the performance of the mechanism, meanwhile, reducing the energy consumption and noise, making the products more reliable.

The operating mechanism adopts the spring type of plane layout, with the function of manual energy storage. It is placed in the mechanism chamber, which is in front of the VI. The mechanism chamber of the VCB is also used as the operating frame at the same time.

The operating mechanism and the chamber can be assembled separately. The energy storage, closing and opening parts of the mechanism are fewer parts, which is compact, simple and high reliability.

Vacuum arc extinguishing theory

The VI with a cyathiform axial magnetic field is installed in the VCB. The VI is with a high vacuum degree. When the fixed and movable contacts open with charges under the force of the operating mechanism, a vacuum arc between the contacts will appear. Because the fixed and movable contacts have chutes with the same inclination direction, the majority of arc current will be diffused on the circumference of the contacts when the arc current flows and the axial magnetic field between the contacts will be formed. So that the arc will maintain diffused and evenly burning in the surface of the contacts, and maintain a lower arc voltage. When the current passes to zero naturally, the residual ions, electrons, and metal vapour can aggregate or composite on the surface of contacts or shielding cover within microseconds.

The insulating strength of the dielectric across open contacts of the VI will quickly restore, and the arc will be extinguished, achieving the purpose of breaking. Due to the use of advanced longitudinal magnetic field technology, this kind of arc extinction has a strong and stable current-breaking capacity.

OEM/ODM Services:

At Shaanxi Yuguang Electric Co., Ltd., we understand the importance of customization. That's why we offer comprehensive OEM and ODM services to meet your specific requirements. Whether you need private labeling or custom product development, our experienced team is here to assist you every step of the way.

Certificates:

We take pride in our commitment to quality and safety. Our products are certified to meet the highest industry standards, including:

3C Certification

ISO 9001 Certification

21 Utility Model Patents and Design Patents

Why Choose Us:

State-of-the-art Manufacturing Equipment

Extensive Testing Facilities

Comprehensive Quality Assurance Processes

ISO 9001 Certified Quality Management System

One-year Warranty on All Products

Large Production Capacity

FAQ:

Q: What is the warranty period for your products? A: We offer a one-year warranty on all our products.

Q: Can you customize products according to our specifications? A: Yes, we provide OEM and ODM services to meet your specific requirements.

Q: Are your products compliant with international standards? A: Yes, our products meet all relevant international standards.

Q: What is the lead time for orders? A: The lead time depends on the quantity and customization requirements. Please contact us for more information.

Q: Do you provide technical support? A: Yes, we offer comprehensive technical support to our customers.

Packaging:

Wooden Box Packaging

Carton Packaging

Foam-filled Packaging

Waterproof and Moisture-proof Packaging

Customized Packaging

International Standard Packaging

Logistics:

Sea Freight

Air Freight

Land Transportation

Multimodal Transport

Express Delivery Services

Contact Us:

Ready to take your electrical projects to the next level? Contact us today at ygvcb@hotmail.com to discuss your requirements and explore partnership opportunities with Shaanxi Yuguang Electric Co., Ltd. Let's create a brighter future together.