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Thermographic Surveys

Electrical Thermographic Surveys


What We Offer

As well as saving money on maintenance and testing we are able to spot overloaded and dangerous connections not noticeable to the human eye before they become a problem.

You will not have to shut down any equipment during testing. We do not require physical contact with any components (in fact equipment has to be energized to test).

All test reports are produced in full colour with explanations of the test under taken and remedial actions to be taken if required.

The report can be issued in paper format, as a PDF or on CD-ROM

What Are Thermographic Surveys and Why Undertake Them?

A thermographic survey identifies abnormally high temperatures within electrical distribution systems. Any high temperatures within electrical components are often indicative of imminent or possible problems, including a fire hazard. Early identification of these faults is essential in order that corrective action can be undertaken before the problem escalates. Electrical circuits and components often fail because of fatigue, defective components, contamination, or just loose connections due to poor workmanship, but all failing  components have one thing in common, they will always have a rise in temperature or ‘hot spot’ prior to failure.


When is it most beneficial to undertake a thermographic survey?

It is imperative that as many circuits as possible are in operation whilst carrying out the thermographic survey as it is only when the electrical system is under load, that weaknesses (hot spots) are most readily identified.

In order to gain the maximum benefit from the survey, it is better to remove covers or open doors wherever possible, as the camera measures surface temperature. Excessive temperatures can however still be identified where this is not practical, as heat will radiate out and warm the covers and doors.

Typically, what items of electrical equipment would be included in the thermographic survey?

In the first instance, electrical equipment which cannot be isolated or equipment which is giving cause for concern. A methodical approach, from source of supply through to final circuits is the normal procedure, but not always possible. Preparation for a thermographic survey is the key in order to maximise the engineer’s time and efficiency whilst on site.

The following list is not exhaustive: