Many users use or storage units or improper time outdoor use will inevitably encounter bad weather, improper handling is prone to moisture problems, especially damp motor generator, has great influence on the life and work of generating units. Then we should be how to solve the problem of drying wetting the motor after? Generator motor damp after drying treatment must be timely, according to the size and moisture level of the motor, there are two kinds of drying methods commonly used in Yangzhou Shengfeng power equipment factory introduction:
1, oven (furnace baking method)
In local conditions, the whole generator (it is best to turn on the stator and open) into the oven (oven) in baking oven heats up. (furnace) should be able to remove the moisture ventilation. In the motor, and the best is laminated, placed in the outer layer of motor, heating layer to maintain the temperature. In 90 a 100 DEG C, and are not fire, smoke and other flammable and corrosive gases. General requirements for continuous baking 8 ~ 18h, the intermediate can measure the insulation resistance value of several times, until it reaches the specified value and stability.
2, steady-state short-circuit current method
Alternator after wet, in the outlet box for three-phase short circuit, then the generator speed rise to tentative speed, remain unchanged, and then adjust the excitation current, the stator short-circuit current reaches the rated current of 50% ~ 70%, 4 ~ 5h, and then increase the excitation current, short circuit current reaches the rated value of 80% 100%, the coil temperature is maintained at 85 DEG C, every 30min measurement a coil insulation resistance and temperature, until the insulation resistance reaches the specified value wells so far.
Damp parts will be damaged units, so the user must keep on drying unit. This also reminds the user in the use of diesel generating units in the process should pay attention to the unit's inspection and maintenance, pay attention to the reasonable storage unit, as well as the development of measures to deal with bad weather.