Kelcroft E&M Limited John Herbert
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Control Panels Thermal Infrared Scanning to Identify Panel Defects under load

John Herbert, hong kong energy saving expert, BEAM expert
John Herbert

Live Thermal Infrared scanning of electrical control panels can quickly idendify any minor problems and defects during testing and commissioning stage, before disaster strikes whilst in service.

electrical thermal infrared scanning control panels

Thermal infrared image sreveals defective MCB

How does Infrared Thermal Scanning Work?

Every object has a normal operating temperature and emits electromagnetic radiation including waves in the infrared spectrum. In electrical installations, cables, circuits and switchgear having a fault or defect creates local heating or hot spot, having a higher temperature than normal.

However, humans cant easily sense heat and temperature unless we touch the object, and touching live cables is not an option! And our sensitivity to detect temperature is limited too.

While the electrical circuit is live, at a safe distance, and without any contact, our thermal infrared camera scans the actual temperature of the cables, connections, switches and switchgear in the field of view, providing an instant colour temperature map, so hot spots can be identifed without shutting down the plant.

electrical thermal infrared scan

Thermal infrared scan reveals image defective electrical switch

Kelcroft's infrared inpsection service identifies any areas where corrosion, mechanical damage, or loose connections cause local heating.

It's fast, faster than the traditional method, first the electrical supply is isolated, then individually checking and tightening every connection by hand, for bolted busduct and bus bars checking the tightness needs a torque wrench.
Even a small electrical control panel or motor control centre can take an hour to check by hand, and during the that inspection time the plant needs to be isolated switched off.

Kelcroft's thermal infrared imaging is fast, accurate to 0.01 degC, its the best non-destructive test (NDT) method pin points problems during the commissioning inspection.

thermal infrared scan electrical busduct checking
Thermal infrared scan reveals loose electrical cable

It's line of sight test, therefore any obstacles prevent inspection, therefore panels should be designed to permit thermal infrared scanning.

Planned Preventitive Maintenance (PPM)

During the thermal infrared scan actual images of any building defect can be captured providing detailed record of the inspection, providing assurance for the building owner.

Periodic scanning of "live" control panels should be conducted as part of Planned Preventitive Maintenance (PPM) detecting defects before equipment fails in service and preventing unplanned downtime.

Call Kelcroft to order a rapid thermal infrared inspection today!

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date: 15-04-21
kelcroft consultants hong kong