Void and Contamination

The voids present in the cable insulation and the presence of contaminants can cause several problems such as reducing the electrical insulation resistance and increasing the risk of electrical arcing and short-circuits. Void and contamination testing helps identify and measure these voids and contaminants, which are critical factors in determining the cable’s ability to perform its intended function.

The microscopy method offers several advantages over other testing methods, including:

• High Precision: Microscopy provides high-resolution images of the cable cross-section, allowing for precise measurement of the voids and contaminants.
• Non-Destructive: The microscopy method is non-destructive, meaning the cable is not damaged during the testing process. This makes it ideal for quality control purposes, as the cable can be re-tested later if necessary.
• Repeatable Results: The microscopy method is highly repeatable, providing consistent results every time the test is conducted. This is important for quality control and ensuring that the cable meets industry standards.