The VGD-12GD AC High Voltage Three Position Combination Vacuum Circuit Breaker from China's Jinhand Electrical features integrated side-mounting with disconnector, dual earthing switches, and compact interlocking for 500mm cabinets. As a leading manufacturer and factory supplier, we ensure high-quality 12kV/1250A/31.5kA performance with solid insulation, live display sensors, and no-adjust door interlocks.
1.Integrated Design: The device features an integrated, side-mounted design with disconnectors and earthing switches, providing a compact solution that saves space and simplifies installation.
2.High Current Capacity: Rated for 12kV and a current capacity ranging from 630A to 1250A, withstanding short-circuit currents up to 31.5kA, making it suitable for robust applications.
3.User-Friendly Features: Equipped with a non-contact live display sensor for the outgoing terminal, enhancing safety by allowing users to monitor live status without physical contact.
| Project | Unit | Parameter | ||
| Rated Voltage | kV | 12 | ||
| (1min)Rated Short-Time Power Frequency Withstand Voltage:Phase-to-Phase /Interrupter | 42/48 | |||
| Rated Lightning Impulse Withstand Voltage(Peak):Phase-to-Phase /Interrupter | 75/85 | |||
| Secondary Circuit Power Frequency Withstand Voltage(1min | V | 2000 | ||
| Rated Frequency | Hz | 50 | ||
| Rated Current | A | 630 1250 | ||
| Rated Short-Circuit Breaking Current | kA | 20 | 25 | 31.5 |
| Rated Peak Withstand Current | kA | 50 | 63 | 80 |
| Rated Short-Circuit Making Current | kA | 50 | 63 | 80 |
| 4s Rated Short-Time Withstand Current | kA | 20 | 25 | 31.5 |
| Rated Short-Time Withstand Current Duration | s | 4 | ||
| Rated Single /Back-to-Back Capacitor Bank Breaking Current | A | 630/400 | ||
| Rated Capacitor Bank Inrush Current Making | kA | 12.5(frequency ≤1000Hz) | ||
| Rated Number of Short-Circuit Breaking Operations | Times | 30 | ||
| Mechanical Life(Isolating Switch/Circuit Breaker/Earthing Switch) |
|
3000/10000/3000 | ||
| Permissible Cumulative Wear Thickness of Moving and Fixed Contacts | mm | 3 | ||
| Rated Closing Operating Voltage | V | AC24/48/110/220 DC24/48/110/220 | ||
| Rated Opening Operating Voltage | ||||
| Storage Motor Rated Voltage | V | AC24/48/110/220 DC24/48/110/220 | ||
| Storage Motor Rated Power | W | 90 | ||
| Storage Time | S | ≤15 | ||
| Contact Gap | mm | 9±1 | ||
| Overtravel | 3.5±0.5 | |||
| Contact Closing Bounce Time | ms | ≤2 | ||
| Three-Phase Opening and Closing Non-Simultaneity | ≤2 | |||
| Opening Time (Rated Voltage) | ≤40 | |||
| Closing Time (Rated Voltage) | ≤60 | |||
| Average Opening Speed (Contact Just Open to 6mm) | m/s | 0.9～1.3 | ||
| Average Closing Speed (6mm to Contact Just Closed) | 0.5～0.9 | |||
| Contact Opening Rebound Amplitude | mm | ≤2 | ||
| Contact Closing Contact Pressure | N | 2400±200(20-25kA)3100±200(31.5kA) | ||
| Rated Operating Sequence |
|
0-0.3s-CO-180s-CO | ||
| Loop Resistance | μ | ≤130 | ||
1.Integrated Design: The device features an integrated, side-mounted design with disconnectors and earthing switches, providing a compact solution that saves space and simplifies installation.
2.High Current Capacity: Rated for 12kV and a current capacity ranging from 630A to 1250A, withstanding short-circuit currents up to 31.5kA, making it suitable for robust applications.
3.User-Friendly Features: Equipped with a non-contact live display sensor for the outgoing terminal, enhancing safety by allowing users to monitor live status without physical contact.
1.Three-Position Integrated Design: Integrates isolating switch, vacuum circuit breaker, and double earthing switches into one unit, saving space and simplifying wiring.
2.Ultra-Compact Installation: Optimized for 500mm cabinet width, saving 40% installation space compared to traditional solutions.
3.Adjustment-Free Interlock: Cabinet door interlock mechanism is factory pre-adjusted, requiring no on-site adjustments, simplifying installation.
4.Non-Contact Live Display: Outgoing terminals equipped with non-contact sensors, safely and visually displaying live status.
5.Reliable Solid Insulation: Main circuit uses solid insulation technology, improving insulation reliability and reducing maintenance needs.
1.Three-Position Integrated Drive: Single-shaft drive achieves reliable switching between isolation, opening/closing, and earthing positions.
2.Intelligent Position Sensors: Uses Hall sensors to accurately detect the status of each position.
3.Adaptive Pressure Adjustment: Automatic contact pressure compensation mechanism ensures consistent electrical lifespan.
4.Modular Incoming/Outgoing Terminals: Supports flexible front/rear terminal configurations to adapt to different cabinet types.
5.Environmental Adaptability Design: Protection rating IP4X, suitable for operating environments from -25°C to +40°C.
1.Three-Position Technology Leadership: One of China's earliest enterprises to develop three-position vacuum circuit breakers, with deep technical expertise.
2.Standardized Production Capacity: Annual production of over 10,000 three-position circuit breakers, with significant scale benefits.
3.Strict Quality Control: Certified under ISO9001 quality management system, products hold multiple international certifications.
4.Rapid Response Service: Establishes a 7×24 technical support hotline, with emergency issue response within 4 hours.
5.Customized Solutions: Provides cabinet coordination design and parameter customization based on specific customer needs.
Over ten years of robust development has enabled Jinhand to become one of China’s foremost manufacturers and suppliers of electrical equipment. Our factory has embraced a wide range of advanced technologies and machinery, and we invite you to procure our high-quality, reasonably priced products made in China.
Address
No. 188, Wei 15th Road, Yueqing City, Wenzhou City, Zhejiang Province, China
