Overview
ZN85-40.5 series indoor high-voltage vacuum circuit breaker (hereinafter referred to as circuit breaker) is suitable for three-phase AC 50Hz, rated voltage 40.5kV power system, and can be used by industrial and mining enterprises, power plants and substations as the opening and closing load current, overload current, for fault current. The circuit breaker and the operating mechanism are arranged up and down, which effectively reduces the depth of the circuit breaker.
The three-phase arc extinguishing chamber and the connected live body are separated by three independent epoxy resin insulating cylinders to form a composite insulating structure. The circuit breaker meets the air distance and creepage distance requirements under normal operating conditions, and effectively reduces the circuit breaker. volume of the device. The main conductive circuit vacuum interrupter and dynamic and static conductive connections are installed in the insulating cylinder, so that the phase spacing is only 300mm. The electrical connections of the main circuit are all fixed connections with high reliability. The insulating cylinder is installed above the circuit breaker frame.
The spring operating mechanism specially designed for this kind of circuit breaker is installed in the frame of the circuit breaker. The mechanism design is simple, and the output curve and its performance are more suitable for the characteristics and requirements of 40.5kV vacuum circuit breakers.
The overall layout is reasonable, beautiful and concise. It has the characteristics of small size, flexible operation, reliable electrical performance, long service life, convenient maintenance and maintenance-free mechanism. The circuit breaker is suitable for frequent operation and various occasions and places with harsh operating conditions.刻的场所。
型号含义
Model meaning
GB1984-2003 "High Voltage AC Circuit Breaker";
GB/T11022-1999 "Common technical requirements for high-voltage switchgear and control equipment standards";
IEC62271-100 "High Voltage AC Circuit Breaker".
Normal use environment
◇Ambient air temperature: no more than 40°C; daily average temperature does not exceed 35°C; lower ambient air temperature is -15°Co
◇Air relative humidity: the daily average value is not more than 95%, the monthly average value is not more than 90%; the daily average value of water vapor pressure is not more than 2.2kPa; the monthly average value is not more than 1.8kPa;
◇Altitude: not more than 1000m;
◇The surroundings are not obviously polluted by dust, smoke, corrosive and flammable gas, steam or salt mist; ◇Vibration or ground motion from the outside of switchgear and control equipment is negligible;
◇The amplitude of electromagnetic interference induced in the secondary system shall not exceed 1.6kV.
◇Special conditions of use If the installation site is above 1000m above sea level, the ambient air temperature exceeds the limit specified in the normal use conditions, or the high humidity is prone to condensation, please negotiate with us for customization.
Product technical features
◆The overall performance of the circuit breaker is excellent
◇The overall structure of the circuit breaker is simple and reasonable, and the arc extinguishing chamber and the interlocking and operating parts are arranged up and down.
◇Special spring operating mechanism, no need to adjust, stable and reliable action.
◇The installation form is free and flexible, including the installation in the drawable handcart-type cabinet and the fixed installation in the side mechanism arrangement.
◆Insulation cylinder with high reliability
◇The insulating cylinder is made of epoxy resin with reliable electrical and mechanical properties through mature vacuum casting process.
◇The vacuum interrupter is arranged in a closed insulating cylinder, which obviously improves the insulating performance, is protected from the harsh external environment, and effectively prevents dust and foreign objects from entering the main circuit part.
◇Reduce the overall size of the circuit breaker.
◆Vacuum interrupter
WL-35855X vacuum interrupter comes from the quality assurance of Cutler-Hammar.
◇ Optional coil type vertical strong magnetic field structure vacuum interrupter, using ceramic shell, copper-chromium contact material, small size, high insulation level, strong arc extinguishing ability, long electrical life, excellent breaking and closing short-circuit current performance.
◆Optional solid sealing process
◇The main conductive circuit of the circuit breaker adopts the solid sealing process, and the vacuum interrupter is poured into the insulating cylinder.
◇Insulation strength is improved.
产品技术特点
