Second-hand generator rental
does not generate power, Chen Xiaoshu's pole tube breakdown or internal rectifier junction is disconnected, and does not play a rectifying role.
The brushes are stuck in the brush holder so that the generator cannot be excited. This can be judged by measuring the magnetic field of the generator and the resistance value in the iron terminal. If the measured resistance value is close to the specified value, it means that it is normal. If there is no finger on the ohm, it means that the excitation circuit is not open. Except for the open circuit of the excitation winding, the brush is usually stuck in the brush holder. Excitation winding. If the two universal test rods are directly connected to the two slip rings on the rotating shaft, if it still does not work at this time, it is likely that the welding place between the ends of the exciting winding and the slip ring is detached, or the excitation winding leads The break is broken.
The stator windings are short-circuited or connected to iron.
It is also possible to let second-hand generators
work under heavy load for a
long time, and the dipping paint layer of the conductors of the group will also fall off, causing phase-to-phase short circuits, or the windings to be connected to the iron due to the breakdown of the stator slot insulation, resulting in the generator not generating electricity.
Excited sniper short circuit. During the assembly process, the positions of the two brushes and the slip ring were not aligned. After a period of time when the generator was working, the powder beam under the brush grinding shorted the two slip rings, which seriously caused the brush holder to burn out. failure, low voltage adjustment, contact ablation, and sealing off or disconnection of a thread within the regulator, so that hair hand generator rental
excitation circuit nowhere. If the contacts are slightly ablated, they can be sanded with glass sandpaper. http://hzbxx.cn/
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