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ZW36-126 Vacuum Circuit Breaker

The ZW36-126 vacuum circuit breaker is mainly used in the AC 126kV/50Hz power systems for control and protection. It uses the vacuum interrupter as the arc quenching component.

This outdoor high voltage vacuum circuit breaker has simple structure, strong breaking ability, and sound operating functions. There is no danger of explosion. The energy storage as well as opening and closing operations can be performed manually or electrically. The electrical operation can be controlled closely or remotely.

Normal Conditions of Use
Item Data
Ambient Air Temperature Upper limit: +40℃
Lower limit: -30℃ for common areas, -40℃ for frigid areas
Altitude ≤1,000m
Wind Pressure ≤700Pa (equivalent to wind speed 34m/s)
Ice Thickness ≤10mm
Air Contamination Degree Level IV (Ambient air should not be subjected to corrosive or flammable gases, water vapor or other obvious pollution.)
Nominal Creepage Distance >31mm/kV
Earthquake Intensity ≤8 degree (There is no recurrent severe vibration, or isolation measures should be taken.)

Note: If the conditions of the service environment do not meet the above requirements, customers should consult with us.

Main Parameters of ZW36A-126 Vacuum Circuit Breaker
Item Value
Rated Voltage 126kV
Rated Lightning Impulse Withstand Voltage Peak 550kV
1min Power Frequency Withstand Voltage 230kV
Rated Frequency 50Hz
Rated Operating Current 1,600A
Rated Short-circuit Breaking Current 40kA
Rated Short-circuit Closing Current 100kA
Rated Short-circuit Withstand Current (4s) 40kA
First-Pole-to-Clear Factor 1.5
Rise Rate of Recovery Voltage 0.75kV/μs
Rated Transient Recovery Voltage Peak 2.6kV
Closing Time 120 ± 0.2ms
Opening Time 50 ± 10ms
Closing Speed 1.3 ± 0.2m/s
Opening Speed 3.5 ± 0.2m/s
Energy Storage Time of Motor < 20s
Motor Voltage DC110 or 220V
Motor Power 400W
Motor Supply Current 9 ± 2A
Voltage of Opening and Closing Coils DC110 or 220V
Current of Opening and Closing Coils DC110/220V 4/2.5A
Rated Pressure of SF6 Gas 0.1 MPa (20℃)
Annual Leakage Rate of SF6 Gas <3%
Standard Operating Sequence O-0.3s-CO-180s-CO
Resistance of Main Circuit <80µΩ
Permissible Wear Cumulative Thickness of Dynamic and Static contacts 3mm
Mechanical Life 10,000 Times
Electrical Life 20 Times
Total Weight 3,000kg

BBE is a specialized vacuum circuit breaker manufacturer and supplier in China. Our company offers a broad range of products, including low voltage distribution board, generator circuit breaker, high voltage vacuum contactor, air circuit breaker, and much more.

Related Names
VCB | Three Phase Circuit Breaker | Outdoor Circuit Breaker

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