Single-phase 220 volts. Zero line voltage between phase pairs. Phase two phases are a and b, or c, between phase voltages are 380, 380 common use of electrical welding machine. Three-phase alternating voltage is 380v between the a.b.c. 380v three-phase electrical appliances or equipment motors. The whole AC into DC. Motor capacitor can not replace the exciter. Exciter stator coil Zhengzhou efficient motors, power transmission and rotor coil can turn while there may speed brushless motor. Is mainly used as a three-phase electric motor power supply, i.e., to rotate the load. Because of the three phase three-phase power are 120 degrees. Rotor stuck phenomenon does not occur. Three-phase power for industrial production, the voltage is 360v single phase power for normal living, the voltage is 220v three-phase power, there are four lines of which three to 220v FireWire, a zero line, any one FireWire together with the zero line is what we usually say that the use of mains motor, and 220v electricity to the three-phase generator as a power source, called the three-phase power supply; u, v, w is called a three-phase, phase to phase in between voltage is the line voltage, the voltage is 380v; centerline called phase voltage between phase voltage is 220v. 1, three-phase and single-phase power supply difference: power generators are given a three-phase motor Henan YE3 each phase of the point where the three-phase power can constitute a single phase circuit to provide users with electrical energy. Note here the AC circuit can not be called positive or negative, should be called the line side (China said electricity FireWire) and neutral (China Power said the zero line). 2, in accordance with the provisions of the neutral point 380 volts (three-phase) of the civil power should not be grounded in into the household (in the transformer is grounded, the ground is not taken into account because of the suspension points higher than the supply voltage caused by point bit, grounding transformer grounding client side is in the earth there is a certain resistance), is a power supply line and a zero line (neutral point lead) constitute a loop Zhengzhou energy-saving motors, single-phase three-core power jack is also connected with a ground wire. Permanent magnet motor will be the mainstream demand for a rare earth permanent magnet brushless DC motor due to the rare earth permanent magnet brushless DC motor unique advantages, its application in the aircraft speed is also accelerating. In the function and performance to a higher level in development. 2, rare earth permanent magnet motor limited angle torque motors that can directly drive the load within a certain range of angles do a quick movement and accurate positioning. Its characteristics are: to contribute in a limited angle large, fast, high precision, high reliability, small response, light weight. To the motor as the core can be composed of a special high-precision, high reliability servo system. 3, rare earth permanent magnet brushed DC motor Brush DC motor is still the most widely used of a motor on a plane in China. Although there are some inherent shortcomings of the motor, but because of its relatively low cost, mature technology, good characteristics, which still play an important role in a number of systems, and continue to seek technological progress. Using rare earth permanent magnet excitation can effectively improve the power density; using more than many of the forms to improve fault tolerance; precious metal alloy using multiple brushes and commutator commutation improve performance and extend the life; hollow cup armature structure reduces the moment of inertia, etc. . Load thrust 4, rare earth permanent magnet linear motor aircraft hydraulic servo valve, oxygen valve, emergency release valve, electric valves, engine throttle lever occasions such as linear motion is not large, the use of rotary screw worm mechanism or structure can only hope The rotary motion into linear motion, but not suited for aircraft fast acting valve high reliability, high frequency response and direct-drive performance requirements. 5, rare earth permanent magnet generator at home and abroad has grown 500 ~ 2000VA UAV rare earth permanent magnet synchronous generator series, 45 ~ 150kVA onboard power system with a large capacity of rare earth permanent magnet generator. In order to meet the growing aviation supply high quality standards demand, an adaptive complex rare earth permanent magnet generator is excited by domestic concerns Zhengzhou efficient motor _ Dresdner Cheung motor (certified) _ Guizhou motor from Zhengzhou Dresdner Cheung Motor Manufacturing Limited. Zhengzhou Dresdner Cheung Motor Manufacturing Co. (www.deshengxiangmotor.com) is Zhengzhou, asynchronous motor leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Cheung at Dresdner leadership with the staff warmly welcome all inquiries negotiations to create a better future for Dresdner Cheung.