DC motor excitation mode refers to the field winding of how power generating field magnetic flux situation and establish the main magnetic field problems. Depending on the excitation mode, the DC motor can be divided into the following types. Field winding and the armature winding not join relationship, while the other DC power supply to the field winding of the DC motor called Merchants excited DC machine motor, wiring as shown in 1.23 (a) below. M diagram showing an electric motor, if the generator motor is represented by G. PMDC also be considered separately excited DC motor. Also easy to send asynchronous motors generate various types of protection, in order to adapt to different environmental conditions. Motor model, you must draw the reactive excitation power from the grid induction motor describes the motor is running, make the power factor worse. Therefore, the drive ball mill, compressors and other high-power, low-speed mechanical equipment, often using synchronous motors. Because of the asynchronous motor speed with its rotating magnetic field has a certain slip relationship, the speed performance is poor (except AC commutator motor). Swiss mechanical and electrical motor mounting _ liter (certified) _ Swiss liter motor supplied by ventilation and air conditioning Electrical Equipment Factory. L Rui HVAC Electrical Equipment Factory (www.dzsrxfkt.com) is an industry leader in Shandong Dezhou, fans, ventilation equipment, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In liters Swiss electromechanical leadership with the staff warmly welcome all inquiries negotiations to create liter Swiss electromechanical better future.