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Thermography

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What is Thermography?

  • Thermography is a technique of analyzing the thermal characteristics of an object from its infrared image, captured through non contact thermal imaging device and find-out the losses current status of equipment.
  • Infrared thermography allows us to see heat energy radiated by objects (Both cold and hot bodies emit this type of energy).

How Thermography is Useful?

  • Temperature is one of the first observable parameters that can indicate the condition of operating electrical equipment like power cable terminal,motor, breaker, transformer and all type electrical supply operation equipment. Heat is a by-product of all work whether is it electrical, mechanical or chemical.
  • Thermal energy not in control will cause failure in the equipment before any incident.
  • Thermography allows us to detect the temperature of the object from the thermal energy emitted.

Applications

In Switchyard:Corona has the potential to increase the temperature, which can result in system failure. To detect this thermography survey is required.
For Transformers:Infrared imaging of the transformer can often detect oil level and radiator convection cooling problems.
For the Batteries: can detect the individual faulty cells by measuring the temperature without contact,
At the Electrical Panels:Infrared thermography is used to perform Preventive Maintenance inspections-

Broadly the following can be observed-

  • Loose connections / terminations,
  • Oxidation at the cable termination points,
  • Dust deposition at terminations,
  • Defective lug crimping, overloaded or imbalanced circuits,
  • Faulty breakers, damaged switches, faulty fuses and other hazardous electrical conditions.
  • Cable over heating.
a s consultant
a s consultant