Infrared (IR) thermography generates a visual image of invisible thermal radiation using an infrared camera. Infrared photography is a line of sight technology which depicts the surface temperature of an object. The thermal camera provides the ability to quickly and safely locate hot spots. For effective inspection inside an electrical cabinet, it must be opened or have an infrared window. Infrared thermography is useful in the inspection of transmission lines, substations, switchgear, motors, generators, transformers, fuses, breakers and more.
Heat is generated when equipment develops certain types of problems. Observable thermal problems include loose or high resistance electrical connections; incoming power problems such as harmonics and voltage imbalance; cooling issues; friction and overloading.
While infrared thermography is a relatively easy technology to utilize and the cost of good cameras keeps getting lower, some skill is required to take and interpret infrared photographs. The infrared technician must be aware of material emissivity, reflected energy, camera resolution and a few others issues. For example, the amount of thermal energy radiated from an object is a function of the emissivity of its surface. An unpainted conductor will appear to be much cooler than a painted conductor of the same temperature. Infrared images can provide accurate absolute temperature measurement only with a correct camera emissivity setting
The technicians at Torq are qualified in the proper use of infrared technologies. Please contact us to find out how Torq Engineering can assist you with infrared thermography services.
More information on infrared thermography is available in the Knowledge Center.