DC motor with a fast response, large starting torque, motor physical map from zero speed to rated speed with the rated torque available performance motor, but also the advantages of DC motor applications is its shortcomings, because DC To generate a constant torque rated load performance, the armature and the rotor magnetic field required to maintain a constant 90 ° motor price, which would be the carbon brushes and commutator. Its starting torque of up to 5 times more than the rated torque, short time overload torque up to 4 times the rated torque, the rate of speed changes greater load speed is very high (generally not allowed to run at no load ). By using the external resistor in series with the series winding (or parallel), or the series winding connected in parallel to achieve speed change. Motor price, rose Rui Electric (certified), Shijiazhuang liter motor supplied by the Swiss HVAC 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.