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Causes of Electrical Corrosion of Diesel Generator Coils

Jul. 21, 2022

The electric corrosion phenomenon of diesel generator coil is a kind of corrosion that occurs in the stator wire and iron core of the internal casing of the unit. When the corrosion condition is relatively light, the anti-corona layer of the wire rod and the surface of the main insulation will form granular white spots, the corrosion phenomenon is more serious, which will cause serious damage to the anti-corona layer, and the surface of the lead circle will appear pitted or even burn the wire rod and electric strip.


120 kw diesel generator


In general, there are two types of electrical corrosion inside diesel generators. One is between the anti-corona layer and the stator slot. We call this phenomenon the phenomenon of external corrosion. The other is the phenomenon of anti-corona. Between layer and main insulation, we refer to this phenomenon as internal corrosion phenomenon.


There are many reasons for electrical corrosion in diesel generators. The main reasons are that the stator slot is not sprayed with low-resistance semiconductors before it goes offline, the ESC used in diesel generators does not meet the specifications, and the way of fixing the stator rods in diesel generators , the installation is not carried out in accordance with the regulations, the size and quality of the current report do not meet the standard requirements, and the disc tolerance does not meet the specifications and other reasons will cause the electrical corrosion of the diesel generator.


Capacitive discharge caused by the loss of contact between the surface of the anti-corona layer of the stator wire and the wall of the stator slot in the diesel generator slot. It can be as high as thousands of degrees Celsius. Moreover, in the process of discharging, the ozone generated by the ionization phenomenon in the air will have chemical effects related to the oxygen and moisture in the air, and these chemical effects will have a corrosive effect on the wire rods and iron cores in the diesel generator. What we call the electrical corrosion phenomenon of diesel generators.


Jiangsu Starlight Power Generation Equipment Co., Ltd. was founded in 1974 and is one of the earliest manufacturers of generators and diesel generator sets in China. The company has a registered capital of 218.88 million yuan. The company covers an area of 86,000 square meters and a building area of 55,000 square meters. There are more than 660 employees, including 456 professional technicians and 106 senior technicians. It has 46 sales and service outlets nationwide. The main products are diesel engines, generator sets, and diesel generators, providing users with a one-stop service of design, supply, debugging and maintenance at any time. Starlight has always insisted on using first-class talents, building first-class enterprises, manufacturing first-class products, creating first-class services, and making every effort to build a first-class domestic enterprise. If any question please feel free to visit our website https://www.dieselgeneratortech.com/ or send email to sales@dieselgeneratortech.com.

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