0212 640 90 96

Servo-Actuated MV Capacitive Switching Circuit Breakers

Property Specification

Type: Servo-Actuated Medium-Voltage Vacuum Circuit Breaker / Capacitive Switching Switchgear Unit

Features: Specially engineered for high-end capacitive switching duties, this indoor vacuum breaker delivers up to 20,000 close-open mechanical operations with an exceptionally low risk of restrike. Its drive mechanism consists of three individual phase-dedicated brushless servomotors managed by double encoders and a hierarchical three-phase electronic control array (where the lead module coordinates overall system behavior). The vacuum interrupters are encased within rugged epoxy resin poles for durability. To guarantee operation during auxiliary power loss, the unit features an internal energy storage capacitor alongside an integrated electronic power supply module. System feedback and monitoring are provided by three internal sensors paired with visual, per-phase mechanical position indicators.

Applications: Indoor reactive power compensation plants, power factor correction systems, capacitor bank protection and switching, and medium-voltage electrical networks prone to high transient inrush currents and voltage surges during frequent capacitive loads.

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Description

Technical Product Range & Performance Matrix

Technical Parameter / Feature Category Capacitive Switching Vacuum Breaker Specifications
Nominal Operating & Insulation Voltage Class Up to 36 kV / 38 kV
Power Frequency Withstand Voltage (50/60 Hz, 1 min) 95 kV
Lightning Impulse Withstand Voltage Rating 185 kVp
Rated System Frequency 50–60 Hz
Continuous Thermal Current Rating Up to 1,250 A
Symmetrical Breaking Capacity & 3s Short-Time Withstand Up to 31.5 kA
Peak Dynamic Making Capacity 94 kAp
Interruption Technology Vacuum
Actuation Mechanism Synchronized Servo Drive Motors
Mechanical Endurance Rating 20,000 overhaul-free close-open operations
Capacitive Switching Lifespan Up to 10,000 back-to-back switching cycles
Transient-Free Closing Capability

• Standard Variant: Fully discharged capacitor banks

• Advanced Variant: Any charge state (independent of bank residual voltage)
Integrated Condition Monitoring & Diagnostics Supported on Standard Variant
Standardized Operating Duty Cycle O – 3 min – CO – 15 s – CO
Contact Opening Duration 39 ms (may extend by 1.5 T in synchronized mode)
Contact Closing Duration 58 ms (in synchronized mode)
Installation Mounting Execution Options Fixed Execution & Drawout / Withdrawable Execution
Pole Center-to-Center Distance (P)

• Fixed Version: 360 mm (11 in)

• Drawout Version: 280 mm (11 in)
Overall Frame Height (H) 1,575 mm (60 in)
Overall Frame Width (W)

• Fixed Version: 1,100 mm (43 in)

• Drawout Version: 940 mm (37 in)
Overall Frame Depth (D)

• Fixed Version: 555 mm (22 in)

• Drawout Version: 700 mm (28 in)
Total Unit Mass / Weight

• Fixed Version: ~235 kg (761 lbs)

• Drawout Version: ~345 kg (761 lbs)

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