Among the raw materials used in motor manufacturing, there is a material that, although used in small quantities, is very important: the lead wire, which is directly connected to the motor windings and is directly related to the customer's final wiring. In motor manufacturing, it is commonly referred to as the lead wire. For ease of communication, Ms. Can will use the term "lead wire" directly in our discussion.
Motor leads also involve heat resistance requirements. Besides the lead core diameter and material meeting current conductivity requirements, another crucial requirement is the compliance of the lead insulation layer. Often, motor manufacturers choose JBQ leads primarily due to the thickness of their insulation layer, which may mitigate insulation damage caused by rough surfaces during manufacturing. However, for compact motors, due to space constraints, it's often necessary to choose leads with a suitable heat resistance rating but relatively thin insulation (such as JG leads). In this case, the insulation material requirements are higher; it must simultaneously meet heat resistance, corrosion resistance, and mechanical and electrical performance requirements. We want to remind lead manufacturers that cost control must be prioritized while ensuring compliance, especially for motor leads manufactured using different processes.
When motor lead wires are impregnated with enamel along with the windings, it means that the lead wires must have impregnation resistance, which is the difference between motor lead wires and ordinary cables. Wire and cable manufacturers should understand the operating conditions of their wires and cables. This means that for motor cables, they should provide products that meet the requirements based on the actual production processes of different manufacturers. Conversely, motor manufacturers should communicate relevant technical requirements with their suppliers when purchasing cables.
For lead wire impregnation processes, in addition to heat resistance requirements, the lead wire must also meet the heat resistance and immersion resistance requirements during the impregnation and drying process. Any failure in any of the lead wire's performance requirements will manifest during production; once a problem occurs, subsequent handling is complicated, and it will increase potential quality issues in the motor product. Therefore, prior communication between both parties is crucial.
Supply and demand, quality and cost are always a pair of contradictions that are both unified and opposed. Every manufacturer will control product costs, but cost control is only meaningful if it is based on meeting quality requirements.
