Enhancing electrical safety and efficiency by using thermal cameras

The key to using thermal cameras for inspection of electrical systems is accurate measurement of temperatures and comparison. Comparison alone gives a good idea of areas to inspect further and measurements allow to classify the severity of the fault.

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As most electricians know, heat is the byproduct of an operating electrical circuit. Excessive heat is also a way for service technicians to identify any hot spots and potentially dangerous electrical faults. These faults can increase costs through equipment failure, additional repairs and service interruptions for business or related facilities.

An electrical fault is an abnormal condition that alters voltage or current. For example, it can be a loose connection, damaged insulation, or a buildup of debris. Because current flow naturally generates heat, faults can create thermal hazards which cause property damage and interrupt normal operations.

Severity of a fault is categorised by how far the current temperature rises above a reference temperature or a comparable location under the same load. As the temperature difference increases, so do energy and repair costs and the risk of fire. These electrical systems are extremely powerful and need routine inspections to ensure reliability, reduce maintenance costs, and operate safety.