Non-drip impregnant paper insulated cable, also known as non-drip cable, is a special type of power cable. Its main feature is that the impregnant used does not flow within the working temperature range, presenting a plastic solid state. This characteristic makes non-drip cable suitable for high drop and vertical installation scenarios, as it does not experience impregnant flow during installation regardless of drop height.
The impregnant of non-drip wire is composed of low-voltage cable oil, certain high-molecular polymers, synthetic paraffin wax, and rosin. Among them, the high-molecular polymer plays the role of a viscous adhesive, making the impregnant plastic waxy at the operating temperature of the cable and not easily flowing. This design enables the non-drip cable to maintain a stable working state under various environmental conditions.
In addition, the design working life of non-drip cables is longer than that of viscous impregnated paper insulated cables, with higher insulation stability. However, due to the use of high viscosity impregnants, the cost of non-drip cables is relatively high, and the installation and laying process is also relatively complex.
In general, non-drip impregnant paper insulated wires have advantages such as being suitable for high drop height and vertical laying, allowing high operating temperatures, and having a long design working life. However, they have higher costs and more complex installation and laying. In practical applications, it is necessary to choose the appropriate cable type based on specific usage environments and requirements.
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