The choice of motor with contactor

3 Phase induction Electrical Motor MS Series for winding machine

Specifications
ambient temperature:-15 -40 
above sea level : not exceed 1000m 

rated voltage:+-5% 
Contactor shall be chosen principle: (1) by using the categories to choose: in the actual production, the water pump vast majority of cage motor use, diesel engine basic belongs to the category is chosen according to AC - 3 use. (2) to determine the level of capacity: the capacity of the contactor or main contactor under rated voltage 3 phase induction generator motor and other technical conditions, the determination of the rated current, attention should be paid to the following points: 1) the influence of duty and working frequency: when choosing contactor, attention should be paid to the control object is a long-term work week, or repeat short work. In the operating frequency is high, but also increase squirrel cage small diesel engine induction motor the contactor of the rated current capacity must be considered. Should as www.dongfeng-motor.com far as possible choose silver, silver or silver contact contactor, such as the KSDZ - U series products. 2) the influence of environmental conditions: production process environment is bad, dust pollution is serious, poor ventilation, and higher temperature in the workplace. To the choice of contactor should be taken down, let the use of technical measures. ac synchronous generator Contactor for rated current of the quick: watch a Y180L - 4, 2 kW motor, for example, from a quick table should check with U60 type contactor. The motor rated current 60 a, rated current 60 a contactor, according to the general AC alternator generator - 3 work category, the contactor to control power of 30 kw 380 v motor, control 380 v 22 kw motor, now belongs to let use reduction.