Indoor Vacuum Circuit Breaker Specifications and Models
Dari Electric recommends
Operating Environment
A Ambient air temperature: upper limit +40℃, lower limit -15℃;
b Altitude: ≤100m (if higher altitude is required, the rated insulation level should be correspondingly increased);
c Amplitude: seismic intensity not exceeding 8 degrees;
d Daily average relative humidity of air not greater than 95%, monthly average not greater than 90%
e No places with fire, explosion hazards, severe pollution, chemical corrosion, or violent vibration.
Main Structure
1. Normal type
The conductive circuit of the main part of the circuit breaker is set inside a cylindrical insulating cylinder made of insulating material, so that the vacuum interrupter is protected from external environmental influences and mechanical damage. The main part of the circuit breaker is installed at the rear of the operating mechanism housing made in the shape of a bracket. Depending on the place of use, a dust cover (as an additional device) can be added to the insulating cylinder. This design helps prevent flashover and serves as additional protection against internal contamination of the circuit breaker.
2. Pole column type
The pole column of the circuit breaker is designed as a cylinder and installed at the rear of the bracket-shaped operating mechanism housing. The conductive part of the pole column is enclosed in an epoxy resin sleeve to protect it from impact and external environmental influences.
Structure of the operating mechanism
The operating mechanism is a spring energy storage operating mechanism. One operating mechanism operates three-phase vacuum interrupters. The operating mechanism mainly includes two energy storage tension springs, a closing energy storage device, connecting plates and cranks that transmit to the interrupters of each phase, and an opening tripping device. In addition, components such as an energy storage motor, trip device, auxiliary switch, control equipment, opening and closing buttons, manual energy storage shaft, energy storage status indicator, and opening and closing indicator are installed in front of the frame. The operating mechanism is suitable for automatic reclosing operations, and because the motor energy storage time is very short, it can also perform multiple reclosing operations. The spring of the operating mechanism has two energy storage methods: manual energy storage and electric energy storage.
Performance and Features
Complies with the provisions of GB1984, DL/T403, and IEC60056 standards. Under normal service conditions, within the technical parameter range of the circuit breaker, it can ensure safe and reliable operation in power grids of corresponding voltage levels. High lifespan: mechanical life of 30,000 times, full-capacity short-circuit current breaking times of 50, and can perform frequent operations or multiple short-circuit current interruptions within the working current range;
High reliability: suitable for various characteristics of reclosing operations;
Full working conditions: uses vertical insulating cylinders to defend against the influence of various special environments;
Maintenance-free: adopts solid insulation structure—integrated fixed pole column;
Complete functions and multiple uses: can be installed fixedly, used as withdrawable, or installed on a frame;
Standardized design: good interchangeability and strong universality, especially suitable for KYN28 (GZS1) use.
Note: The above information and technical parameters are compiled and released by Yangzhou Dari Electric Co., Ltd.
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