How Power Cable Testing Equipment Detects Hidden Faults Before Electrical Failures Occur
Electrical failures in power networks rarely happen without warning. In most cases, problems develop silently inside cables long before an outage, fire, or equipment breakdown occurs. Moisture ingress, insulation degradation, partial discharges, and manufacturing defects can remain hidden for years, gradually weakening the cable system. Detecting these issues early is the key to ensuring safety, reliability, and uninterrupted power supply—this is where power cable testing equipment plays a vital role. Understanding Hidden Faults in Power Cables Hidden faults are defects that cannot be identified through visual inspection alone. These faults may exist within the insulation layers, conductor joints, or terminations. Common causes include thermal stress, electrical overloading, poor installation practices, aging materials, and environmental exposure such as moisture or chemical contamination. If left undetected, these faults can escalate into severe failures, resulting in unplann...