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Thermal Imaging - Electrical


Non Destructive Testing - Electrical 
Thermal Imaging is the leading non-destructive testing tool used in elrctrical switchboard maintenance and switchgear maintenance. It is an excellent fire prevention tool used to identify 'hot joints' invisible to the human eye. It is an essential part of every commercial and industrial business’s preventative maintenance plan.
Extreme Electrical Fault
This extreme fault was picked up during a routine scan. Fire danger was extreme causing an immediate shut-down of the plant.
What you see
What You See
What we see
What We See
Temperature graphic
Temperature Graphic read from the three lines on the Thermal Image on the immediate left
Extreme Electrical Fault
Fuse links and Power Factor Correction units are the most common electrical fault we find in manufacturing plants, hi-rise buildings and hotels.

The following is a fault found in a Power Factor Correction unit. 
What you see
What You See
Picture
What We See
Picture
Temperature Graphic read from the two lines on the Thermal Image on the immediate left

Minor Electrical Fault
Smaller faults develop without your knowledge Thermal Imaging will find fire danger.
Picture
What You See
What we see
What We See
Temperature Graphic

Temperature Graphic read from the two lines on the Thermal Image on the immediate left
Eddy Current effects
The following steel plate was installed in a switchgear cubicle. Hysteresis / Eddy current losses resulted in local heating. It was recomended the steel plate be replaced by stainless steel.
What you see
What You See
What we see
What We See
Temperature Graphic

Temperature Graphic read from the two lines on the Thermal Image on the immediate left


Fire Danger
Complacency and bad OH&S procedure are the number 1 cause of fire. It is imperative to scan your plant annually.
Picture
Thermograph depicting overhearing fuse link and base
Thermograph depicting overhearing fuse link and base
Thermograph depicting overhearing fuse link and base
   Burned Fuse Link and Base
Fire in Main Switch Room
   Burned Fuse Link and Base              Fire in Main Switch Room

Some useful links:
Sydney shopping centre evacuated after fire - ABC News
Substation Fire - BBC
Broadway Shopping Center Fire 
Motorists warned as Sydney factory fire still burns - SMH.com.au

Non Destructive Testing:  Electro-Mechanical

Motors

Thermal Imaging can pick up overheating motor bearings and other mechanical equipment. 

 Non Destructive Testing – Electro-Mechanical

Motors
Thermal Imaging can pick up overheating motor bearings and other mechanical equipment. 
An annual thermal Imaging non destructive testing program reduced this plant's downtime to zero by picking up an overheated front bearing.
What You See
What You See
What We See
What We See
Temperature graphic

Temperature graphic read from the green line in the picture immediately left.

Gearboxes
Thermal Imaging can pick up overheating gearboxes preventing costly downtime.

Thermal Imaging used to predict a $75 dollar bearing failure saving the plant 250,000 in downtime.
What You See
What You See
What We See
What We See
Temperature graphic

Temperature graphic read from the two lines on the picture immediately left 


Transformers or Static Machines
You cannot see the overheating transformer coils, but Thermal Imaging picked up these under-rated / overloaded transformers. All of the embedded temperature sensors had failed leading to fire danger, and costly downtime. 

Thermal Imaging predicted early failure of this air cooled transformer, preventing lift failure in a high rise building.
What You See
What You See
What We See
What We See
Temperature graphic

Temperature graphic read from the three lines on the picture immediately left 
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