Why Diesel Generator Sets Use All-Copper Motors

Diesel generator sets use all-copper motors primarily because all-copper generators offer superior durability. The overall service life of water pumps equipped with all-copper wire motors is significantly longer than that of those with aluminum wire motors. All-copper wire motors are more energy-efficient than aluminum ones. Copper wires have lower resistance compared to aluminum wires, resulting in less heat generation, smoother current flow, minimal heat waste, and thus greater energy savings. All-copper core motors operate more quietly; aluminum wire motors produce more than twice the noise of copper wire motors. It is evident that all-copper motors are more expensive than aluminum ones. Due to the sharp increase in copper prices, many motor manufacturers have switched to using aluminum wires instead of copper wires, leading to a prevalence of aluminum wire motors in the market for mechanical and electrical products. Guangxi Dingbo Electric Power provides the following methods to identify whether a motor is all-copper or aluminum.

1.The most accurate and direct method is to disassemble the generator and inspect the stator windings. After disassembly, select several points and use a sharp blade to scrape off the insulation paint on the surface of the enameled wire. Observe the color of the metal: if it is purplish red, it is copper wire; if it is silvery white, it is aluminum wire. After the inspection, it is advisable to cover the area with insulation paint again to enhance insulation.

2.Due to the physical properties of aluminum, it is not as easy to draw into very fine wires as copper. Therefore, for motors of the same power, aluminum wires are generally slightly thicker. Because aluminum wires of the same cross-sectional area have higher resistance than copper wires, to achieve the same current, the cross-sectional area (i.e., diameter) of the aluminum wire must be increased.

3.To manufacture a motor of the same power, the increased diameter of the aluminum wire leads to more windings, which cannot fit into the originally designed slots of the silicon steel sheets. Consequently, the slots must be enlarged, and the only way to do this is to increase the outer diameter and thickness of the stator.

From the perspective of the core service of Dingbo Electric Power's diesel generator maintenance manufacturer, the relevant technology maturity it has mastered is very high. Simply put, we can easily deal with the diesel motor unit failure problems encountered by customers in different industries. More importantly, we can solve the difficult problems of multiple types of related equipment and meet customer needs. As a professional supplier of diesel generator sets, Dingbo not only provides high-quality diesel generator set products to users, but also is a professional expert in generator set maintenance and after-sales service. With a technical team of more than ten years of experience in the generator industry, Dingbo is available 24 hours a day to answer your questions. Moreover, Guangxi Dingbo Generator Set Manufacturing Co.,Ltd. has established a nationwide after-sales service network, providing you with a better choice for both products and services.