Description
ZN63 (VS1) 24kV Indoor Vacuum Circuit Breaker Overview
The ZN63 (VS1) is a three-phase AC 50 Hz indoor vacuum circuit breaker for 24 kV systems. The existing page describes a modular spring operating mechanism, fixed or withdrawable installation, and a solidly sealed pole as the standard primary-circuit arrangement, with an insulating tube listed as an option.
Configuration Features
- Rated voltage: 24 kV
- Rated frequency: 50 Hz
- Installation: fixed unit or moving-base carrier unit
- Operating mechanism: modular spring mechanism
- Primary circuit: solidly sealed pole; insulating tube optional
- Interlocking: five-interlocking functions described after panel installation
Operating Conditions
- Maximum altitude: 1,000 m
- Ambient temperature: -25°C to 40°C
- Maximum daily average relative humidity: 95%
- Maximum monthly average relative humidity: 90%
- Maximum daily average saturated vapor pressure: 2.2 × 10-3 MPa
- Maximum monthly average saturated vapor pressure: 1.8 × 10-3 MPa
- Maximum earthquake intensity: 8
- No flammable, explosive, or corrosive medium and no severe vibration
Selection Guidance
Confirm rated current, short-circuit rating, operating sequence, fixed or withdrawable installation, pole insulation type, control voltage, switchgear interface, and site conditions.
FAQ
What system is this breaker intended for?
Three-phase AC 50 Hz indoor 24 kV systems.
Which installation forms are described?
Fixed or withdrawable installation.
What operating mechanism is listed?
A modular spring mechanism.
Which primary-circuit insulation forms are described?
A solidly sealed pole is described as standard, with an insulating tube as an option.
What should be provided for selection?
Provide current, fault level, sequence, installation form, pole type, control voltage, switchgear interface, and site conditions.
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