Smart Medium Voltage Complete Switchgear
VGW-12/24 Indoor Medium-Voltage Vacuum Circuit Breaker (Spring-Operated)
The VGW-12/24 indoor AC vacuum circuit breaker is designed by Jinguan Co., Ltd. specifically for KYN28 series high-voltage switchgear, suitable for systems with a rated voltage of 12~24kV and a rated current of 630~4000A. Its advantages mainly lie in its high performance, high reliability, and ease of maintenance. This circuit breaker has the ability to switch normal load current, overload current, and interrupt rated short-circuit current, ensuring the safe and stable operation of the power system. It is manufactured using advanced technology and materials, has a high mechanical and electrical life, and can operate normally in harsh environments, ensuring long-term stable operation. In addition, the VGW-12/24 circuit breaker has a simple structure and is easy to maintain, reducing maintenance costs and downtime and improving equipment operating efficiency.
Suitable for national power distribution networks, municipal construction, port construction, and other locations and supporting intelligent terminals, enabling power distribution automation applications.
Product Highlights
Enables ring network power supply requirements for user demarcation functions, achieving intelligent power distribution.
Uses vacuum arc extinguishing and epoxy resin encapsulated insulation, with excellent electrical performance. Adopting State Grid standards, the appearance and structure are fully standardized, allowing for seamless integration with any State Grid certified equipment.
Can be operated remotely electrically or locally manually; integrated spring operating mechanism, convenient for operation and maintenance.
Corrosion-resistant, fully sealed aviation connector design ensures high reliability of the power distribution automation interface.
Integrated secondary control module with functions such as anti-burning of switching coils, anti-tripping, and undervoltage tripping.
Technical parameters
| Rated Parameters | Unit | Parameter Value | ||||||||||
| Rated Working Voltage | kV | 7.2、12 | 24 | |||||||||
| Rated Insulation Level | Rated Short-Time Power-Frequency Withstand Voltage (1min) | Phase-to-Phase, Phase-to-Ground | kV | 42 | 65 | |||||||
| Fracture | 48 | 79 | ||||||||||
| Rated Lightning Impulse Withstand Voltage (Peak Value) | Phase-to-Phase, Phase-to-Ground | 75 | 125 | |||||||||
| Fracture | 85 | 145 | ||||||||||
| Rated Working Frequency | Hz | 50 | 50 | |||||||||
| Rated Working Current | A | 630 | 630 | 630 | 630 | 630 | ||||||
| 1250 | 1250 | 1250 | 1250 | 1250 | 1250 | 1250 | 1250 | 1250 | ||||
| 1600 | 1600 | 1600 | 1600 | 1600 | 1600 | 1600 | ||||||
| 2000 | 2000 | 2000 | 2000 | 2000 | 2000 | 2000 | ||||||
| 2500 | 2500 | 2500 | 2500 | 2500 | 2500 | 2500 | ||||||
| 3150 | 3150 | 3150 | 3150 | 3150 | ||||||||
| 4000 | 4000 | |||||||||||
| Rated Short-Circuit Breaking Current | kA | 20 | 25 | 31.5 | 40 | 50 | 20 | 25 | 31.5 | 40 | ||
| Rated Short-Circuit Making Current (Peak Value) | kA | 50 | 63 | 80 | 100 | 125 | 50 | 63 | 80 | 100 | ||
| Rated Short-Time Withstand Current | kA | 20 | 25 | 31.5 | 40 | 50 | 20 | 25 | 31.5 | 40 | ||
| Rated Peak Withstand Current | kA | 50 | 63 | 80 | 100 | 125 | 50 | 63 | 80 | 100 | ||
| Rated Short-Circuit Duration | s | 4 | 4 | |||||||||
| Rated Cable Charging Making and Breaking Current | A | 25,C2 level | 31.5,C2 level | |||||||||
| Rated Capacitor Bank Making and Breaking Current (Single/Back-to-Back) | A | 630/400,C2 level | 400/400,C2 level | |||||||||
| Rated Short-Circuit Current Breaking Times | times | 50 (1600A-31.5kA and below, high quality), 30 (others) | 50 (1600A-31.5kA and below, high quality), 30 (others) | |||||||||
| Closing and Opening Operating Voltage | V | 110、220 | 110、220 | |||||||||
| Rated Operating Sequence | - | O-0.3s-CO-180s-CO | O-0.3s-CO-180s-CO | |||||||||
| Mechanical Life (Whole Machine) | times | 30000 (1600A-31.5kA and below, high quality), 20000 (others) | 20000 (1600A-31.5kA and below, high quality), 10000 (others) | |||||||||
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