The DC motor (Haibo Technology) daily maintenance work

Abstract: DC motor are described in this paper daily maintenance work, daily maintenance work to reduce and avoid the DC motor in operation failure is very important, which to prolong the service life of the DC motor, DC motor normal operation can not be ignored.
1, daily maintenance to reduce and avoid the DC motor in operation failure is very important, the most important aspect is the tour inspection and promptly eliminate any abnormal phenomenon. The root cause of the accident analysis, countermeasures of serious accidents, the accident is reduced and the number of Taiwan to improve the DC motor repair. Work efficiency, technical essential. DC motor maintenance of its normal operation is very important, but the motor is in operation often encounter many unexpected situations, such as short circuit, overload, open phase. In order to make the motor in these conditions will not be damaged, we must take some measures to maintain the motor running protection internal cleaning. DC motor is not allowed to enter the water, oil, dust, and regularly remove dust inside and outside of the DC motor.
2, pay attention to the load current should not exceed the rated value.
3, pay attention to check bearing heat, oil and other conditions, especially in accordance with the provisions of the gas.
4, the motor temperature rise can not exceed the rated value.
5, asynchronous DC motor over load reason
The reason of the induction DC motor over load is divided into the following situations:
Caused by the drag of mechanical equipment. Such as water blocking drainage and irrigation machinery, shaft misalignment, excessive motor load, and even stall.
Due to the poor working conditions of the DC motor itself. Such as poor ventilation, the ambient temperature is too high, the DC motor machinery parts of the fault caused by the motor overheating, insulation level is reduced.
Due to poor quality of the power supply network, such as the voltage is too low, three-phase imbalance and other reasons caused by the motor current increase, etc..

                                            
6, the correct selection of the basic principles of DC motor
The mechanical characteristics of DC motor starting, braking, speed control and other control performance should meet the mechanical characteristics and production process requirements, impact on the quality of power supply of the motor in the working process (such as voltage fluctuation, Xie Bo interference etc.), should be within the allowable range; the motor power according to the working system and cooling method of predetermined Kiev in the case of the determined, should be in a limited range of motor temperature rise; according to the environmental conditions, operating conditions, installation mode, transmission mode, selection of motor structure, installation and protection, to ensure reliable motor work; considering a few investment operation costs, the driving system of economy, energy saving, reasonable and reliable and safety.
7, the basic technical requirements of DC motor
DC motor of the basic technical requirements include: ratings; work quota; operating conditions; insulation grade and temperature; dielectric properties; shell protection grade; cooling method; structure and installation forms; line terminal markings and direction of rotation; appearance and installation dimensions and tolerances, noise and vibration limits; electrical properties; deadlines or reliability; table quality; motor safety performance.
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