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Synchronous generators are a key part of diesel generators. It is necessary to establish a suitable working environment for the diesel generator set and to carry out routine maintenance. High temperature, humidity and airborne contaminants in the generator room are the most common contributors to generator failure. Accumulation of dust, dust and other air pollutants can cause deterioration of the insulating layer, not only easy to form the conductive path to ground, but also make the rotor bearing friction increases the Department of fever. Moisture of the servo motor and moisture in the air pollutant can easily form a leakage path to the ground in the generator and cause the generator to malfunction. The temperature in the engine room will make the heat generated by the generator work hard to be dissipated, resulting in the decrease of output power and the overheating of the generator. Therefore, the engine room dust-proof, moisture-proof, ventilation and cooling must be given sufficient attention. Motor protectors Whether single or double bearing generators, their rotor shaft and diesel engine shaft connection between the coaxial requirements are high. Performance of small motors Sometimes after long-term operation of the unit may reduce the coaxiality, resulting in increased noise generator, the temperature is too high. Should be regularly checked and maintained to maintain good concentricity. The load exceeds the rated load range of the generator, or the unbalanced three-phase load can also cause the generator to become inefficient and overheated.