Zn85-40.5 Type Circuit Breaker Switch for 33kv Power Transmission Substations

Product overviewZN85 high voltage vacuum circuit breaker (hereinafter referred to be circuit breaker) is the  withdrawable type circuit breaker developed by us and is the indoor switchgear for 40. 5kV power system. It is used for protection and control of power grid equipment and power equipment of industrial and mining enterprises. Due to its special merits, it is suitable for rated voltage frequent operations and in places with multiple breaking of circuit current.Service conditions1)Ambient temperature: maximum +40ºC; minimum -15ºC2)Relative humidity: Daily average     RH ≤95%                                Monthly average RH ≤90%                                Daily average steam pressure ≤2.2X10-3MPa                                Monthly average steam pressure ≤1.8X10-3MPa3) Altitude:        ≤2000 m4) Seismic intensity: no more than 85) In places without water dripping, inflammable and explosive hazards, chemical corrosive gases or violent vibration.Technical specification  No.Items UnitParameters1Rated voltagekV40.52Rated frequencyHz503Rated insulation levelLightning impulse withstand voltage (peak)85185 4Rated current A1250,1600,2000, 25005Rated short circuit breaking currentkA25, 31.5, 406Rated short circuit closing current (peak)kA63, 80 ,1007Rated short-time withstand current (4s)kA25, 31.5, 408Rated peak withstand currentkA63, 80,1009Breaking times of rated short-circuit currentTimes2010Rated capacitor bank breaking current A40011Rated operating sequence 0-0.3s-CO - 180s-cO12Mechanical lifeTimes10000About Our CompanyShandong Witry Electric Co., Ltd. is a professional electrical equipment enterprise located in Shandong province east of China, integrating R&D, design, manufacture, supply and export.The main products are high-voltage transmission and transformation equipment, high and low-voltage switchgear, cable tray. the products are widely used in power, metallurgy, chemical industry, machinery, medicine, mining, textile and other industries.   Mission & Vision Thinking and doing more,  make customers do less.Being more efficient,  make customers more beneficial.Represent with quality,  make reputation with service.Sincerely treat guests,  make friends in business.We are committed to producing only the highest quality products that meet or exceed our customers' expectations and requirements. Our goal is to achieve 100% customer satisfaction by delivering the best products and services on time and defect free. We will achieve this individually and corporately through tested and proven processes and controls in our Quality System, and with a constant focus and effort on continuous improvement.   Our EmployeesOur employees consists of experienced, well-motivated and dedicated team of engineers, technicians, sales executives and management staff. Our company has a strong technical team, all-weather provide convenient fast pre-sale and after-sale service and detailed engineering technical solutions. Our Equipment and ManagementOur factory covers an area of 100,000 square meters and has 18 workshops. The main equipment includes laser cutting machine, Shearing Machine, automatic ladder edge production line, high-voltage electrostatic powder spraying production line, etc. It has more than 100 sets of imported CNC processing equipment and precision testing equipment.Each process has strict quality control and processing technology, and the products fully comply with national standards and IEC (International Electrotechnical Commission)standards. The company has successfully obtained ISO9001:2008 quality management system, ISO14001:2004 environmental management system and OHSAS18001:2007 occupational health and safety management system certification. /* January 22, 2024 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1