As well as general dc motor, brushless dc motor operation mode is continuous, short-term and intermittent three. Continuous operation mode of the motor, can according to their ratings run continuously for a long time. Short-term operation mode of the motor, according to the rating from actual cold start within the prescribed duration of operation, running time limit generally 10, 30, 60, and 90 min. Intermittent operation mode of the motor, according to the rating of operation after a period of time, power is shut down for a period of time, then according to the same cycle operation, standard sustained rate of 15%, 25%, 40%, 60%. Sustained rate refers to a period of time the power ratio, such as continuous rate of 15%, is refers to in a cycle with 15% of the time the power, power 85% time is stopped. Under the same power and same temperature limit, intermittent or short-term operation mode of the size of the motor to smaller than continuous operation mode of the motor. for more details, please log on to http://www. hengdrive。 Com 2012 - motor controller co. , LTD9 -14 the Chinese first-class enterprise brushless dc motor controller, creating common, standard the full range of brushless dc motor controller the motor controller. All rights reserved, reprint without permission.