2014年7月29日星期二

Motor selection guide


Mechanical motor selection directly affects the operation efficiency and service life of the machine, so choose a reliable motor manufacturer product is crucial to its roughly may refer to the following aspects: Voltage and frequency; Domestic voltage grade of 6 kv + - 5%, the power supply voltage within ac induction motor the scope of this change does not affect the performance of the motor parameters. Level of domestic frequency 50 hz + - 2%, power frequency within the scope of this change does not affect the performance of the motor parameters. Motor installation location, high altitude and working environment temperature; < > rotary motor norm and performance stipulated in GB/T755 able motor installation location is not higher than 1000 m above sea level, is not higher than 40 degrees Celsius temperature environment. If the installation environment does not exceed more than the environment can be carried out in accordance with the standard data operation, if more than the above range of the motor output, generally less than the power of the sample, contact the ac motor electric 65kw manufacturer. Choose according to environment protection grade; Cement plants, flour mills, mining and other dust field should be more choose IP55 / IP54 products; Environment better no dust occasions to select IP23 / IP44 products. And if there is a protective measures should be considered when outdoor use and prevent the combining practical considerations such as canopy product protection grade. The load of the motor types; Usually a fan, water pump, compressor, machine load appropriate chooses squirrel-cage motor, ball mill, crusher, mill type appropriate chooses type motor. If you need speed regulating motor according to the speed control mode or speed, such as feedback motor, frequency conversion motor, etc. Often use squirrel-cage motor load is light, general selection around the linear motor in the load. Motor auxiliary equipment. Can consider cold wind power, space heater, temperature measuring element (our configuration for high voltage motor temperature measuring element, please information sima in shaanxi province jindu motor www.dongfeng-motor.com co., LTD.), current transformer, thin oil station (our stand number more than 500 and 710 stand above the 2 pole motor motor basically equipped with pressure circulating oil lubrication sliding axis), vibration components, etc

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