VV-SVEL-10 Vacuum Circuit Breaker for Indoor Installation is designed to protect electrical equipment in factories, enterprises, power plants, and transformer substations in AC networks with insulated or grounded neutral through an arc suppression coil or resistor, with a rated voltage of 10 kV and frequency of 50 Hz.

Main Technical Specifications:

• Rated Voltage: 10 kV
• Maximum Operating Voltage: 12 kV
• Rated Current: 630 A, 1000 A, 1250 A, 1600 A, 2000 A, 2500 A, 3150 A, 4000 A
• Rated Breaking Current:
  • Peak Withstand Current: 51 kA, 63 kA, 81 kA, 102 kA
  • Thermal Stability Current: 20 kA, 25 kA, 31.5 kA, 40 kA
  • Short-Circuit Current Flow Time: 3 s
• Rated Voltage for Control and Auxiliary Circuits:
  • AC: 110 V, 220 V
  • DC: 110 V, 220 V
• Rated Voltage for Motorized Trolley Control Circuits: DC 220 V
• Rated Voltage of Minimum Voltage Trip Unit: AC 110 V, 220 V
• Rated Current of Control Circuits:
  • Closing/Opening Coil: 1 A
  • Overcurrent Trip Unit: 3 A; 5 A
• Control Circuit Operating Voltage Range (% of Nominal Voltage):
  • Closing Coil: 70–115% (AC) / 85–105% (DC)
  • Opening Coil: 65–120% (AC) / 70–110% (DC)
  • Spring Charging Motor: 85–110%
• Insulation Test Voltages for Main Circuit:
  • One-minute Test, 50 Hz: 42 kV
  • Lightning Impulse (1.2/50 µs): 75 kV
• Operation Times:
  • Opening Time: ≤ 20–50 ms
  • Closing Time: ≤ 30–70 ms
  • Contact Bounce Time: ≤ 2 ms
• Mechanical Durability (Operating Cycles):
  • For breakers rated at 630 A, 800 A, 1000 A, 1250 A, 1600 A: 10,000 cycles
  • For breakers rated at 2000 A, 2500 A, 3150 A, 4000 A: 10,000 cycles
• Electrical Durability (Operating Cycles):
  • Same as mechanical durability for all rated currents
• Service Life: Minimum 30 years

Advantages:

• Vacuum Arc Quenching Technology: Ensures reliable disconnection of circuits during short circuits.
• High Switching and Mechanical Durability: Guarantees long service life and operational reliability.
• Customizable Design: Adapts to diverse customer requirements.

Operating Conditions:

• Ambient Temperature: -25°C to +40°C
• Relative Humidity: Up to 75% at +15°C
• Altitude: Up to 1000 m above sea level
• Seismic Resistance: Up to 6 points on the MSK-64 scale

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