Description
Modular Operating Mechanisms VCB is suitable for MV switchgear and is characterised by the modular design of the operating mechanism of this type of VCB
Operating Environment:
- Ambient Temperature: Not exceeding +40°C, not less than -15°C (storage at -30°C is not allowed).
- Altitude: Not exceeding 1000m.
- Relative Humidity: Daily average not exceeding 95%, monthly average not exceeding 90%. Daily average saturation vapor pressure not exceeding 22×10-3MPa, monthly average not exceeding 18×10-3MPa.
- Seismic Intensity: Not exceeding level 8.
- Application Sites: Suitable for use in places without fire, explosions, severe pollution, chemical corrosion, and severe vibration.
Key Technical Parameters:
- Rated Insulation Level: 75kV
- Rated Lightning Impulse Withstand Voltage: 42kV
- Rated Current: 630A, 1250A, 1600A, 2000A, 2500A, 3150A, 5000A
- Rated Short-Circuit Breaking Current: 25kA, 31.5kA, 40kA
- Rated Short-Circuit Making Current (Peak): 63kA, 80kA, 100kA
- Rated Short-Circuit Duration: 4 seconds
- Rated Operating Sequence: O-0.3s-CO-180s-CO or O-180s-CO-180s-CO (40kA)
- Rated Single/Back-to-Back Capacitor Bank Breaking Current: 630A/400A
- Number of Operations at Rated Short-Circuit Breaking Current: 30 times
- Closing Time: 30-70ms
- Opening Time: 20-50ms
- Mechanical Life: 30,000 operations
- Rated Energy Storage and Operating Voltage: AC220/110V, DC220/100V
- Contact Gap: 11±1mm
- Overtravel of Contact: 3.5±0.5mm
- Average Closing Speed: 0.5-0.8m/s
- Average Opening Speed: 0.9-1.2m/s
- Contact Bounce Time at Closing: ≤2ms
- Synchronization Time for Three-Phase Opening and Closing: ≤2ms
- Main Circuit Resistance: ≤50μΩ (630A), ≤45μΩ (1250A), ≤35μΩ (1600-2000A), ≤25μΩ (2500A and above)
Product Features:
- Wide Applicability: The Modular Operating Mechanisms VCB VSG-12 indoor high-voltage vacuum circuit breaker is suitable for a variety of environments and is particularly well-suited for applications requiring frequent operations and high reliability in power systems.
- Modular Design: The operating mechanism uses a modular design, providing the convenience of quick replacements and assembly.
- Safety and Reliability: It boasts outstanding electrical performance, reliably protecting and controlling power equipment.
- Long Mechanical Life: With a high mechanical life, it can withstand extended periods of use.
- Advanced Design: Features like contact gap and contact overtravel ensure high performance and reliability.
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