Xuzhou Sheng Erda Refrigeration Electrical Services Limited is engaged in the central air conditioning and home air conditioning installation, maintenance, cleaning, and maintenance of the professional company, now has a professional air conditioning installation and maintenance of technical staff of 30 people. Our company is "quality first, reputation first, service first," the purpose of customer service. Professional undertaking: Gree, Haier, Chunlan, Midea, Hisense, LG, the new Branch, Oaks, Galanz and other domestic brands of air conditioning moves, maintenance, fluoride, disassembly, cleaning and maintenance of air conditioning installation price ,, charges Quanchengzuidi. Air conditioning installation and air conditioning repair business Xuzhou conditioning parts brass prices, after years of painstaking research the most professional air conditioning services. We are familiar with a variety of air-conditioning equipment, maintenance and management, with excellent professional skills and services, and receive professional training courses to ensure the quality of service 24 hours a day without holidays. You just want to make a phone call to our technicians for you as a professional answer Xuzhou recycling of used air-conditioning parts, our professional technicians in receipt of your newspaper when you repair the phone, talking to your symptoms, with our many years of maintenance experience, What is quickly made to solve the three-phase three-wire power supply? What is the three-phase four-wire power supply? three-phase three-wire connection is a three-phase AC power, from the end of the first three coil wire leads three other The three coils together trailing air conditioning parts, also known as star connection, common symbols "Y" means that this leads to three wire power mode called the three-phase three-wire system. If further from the junction of three coils and then leads a trailing wire, which leads to four wire power supply called phase four-wire mode. What is the phase line (or FireWire)? What is the middle (or neutral)? 3 end of the connection point is called the midpoint of the wire leads from the point called the center line or zero line. From 3 ends with wire leads or line call. Xuzhou conditioning parts brass prices, Sheng Erda refrigeration (certified), air conditioning parts provided by Xuzhou 圣尔达 Refrigeration Electrical Services Limited. Xuzhou Sheng Erda Refrigeration Electrical Services Limited (xzktw.com) Xuzhou, Jiangsu, heat, refrigeration and air conditioning equipment leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customers needs. Sheng Erda leader in refrigeration staff warmly welcome all inquiries negotiations to create a better future Sheng Erda refrigeration.