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16.4.8
17 Introduction to thermographic inspections of electrical installations ......................................
17.1
Important note ......................................................................................................................
17.2
General information ..............................................................................................................
17.2.1
17.2.2
17.2.3
17.2.4
17.2.5
17.2.6
17.2.7
17.3
17.3.1
17.3.2
17.3.3
17.3.4
17.3.5
17.4
Reporting ..............................................................................................................................
17.5
Different types of hot spots in electrical installations ...........................................................
17.5.1
17.5.2
17.5.3
17.5.4
17.5.5
17.5.6
17.5.7
17.6
Disturbance factors at thermographic inspection of electrical installations ........................
17.6.1
17.6.2
17.6.3
17.6.4
17.7
Practical advice for the thermographer ................................................................................
17.7.1
17.7.2
17.7.3
17.7.4
17.7.5
18 About FLIR Systems .......................................................................................................................
18.1
More than just an infrared camera .......................................................................................
18.2
Sharing our knowledge ........................................................................................................
18.3
Supporting our customers ...................................................................................................
18.4
A few images from our facilities ...........................................................................................
Publ. No. T559580 Rev. a486 - ENGLISH (EN) - November 17, 2010
16.4.7.1
Relative & absolute humidity ............................................................
16.4.7.2
Definition of dew point ......................................................................
continuity' (UK example) ......................................................................................
16.4.8.1
Credits ...............................................................................................
16.4.8.2
Introduction .......................................................................................
16.4.8.3
Background information ...................................................................
16.4.8.4
Quantitative appraisal of thermal anomalies ....................................
16.4.8.5
Conditions and equipment ...............................................................
16.4.8.6
Survey and analysis ..........................................................................
16.4.8.7
Reporting ...........................................................................................
Introduction ...........................................................................................................
General equipment data .......................................................................................
Inspection .............................................................................................................
Classification & reporting ......................................................................................
Priority ...................................................................................................................
Repair ....................................................................................................................
Control ..................................................................................................................
How to correctly set the equipment .....................................................................
Temperature measurement ...................................................................................
Comparative measurement ..................................................................................
Normal operating temperature .............................................................................
Classification of faults ...........................................................................................
Reflections ............................................................................................................
Solar heating .........................................................................................................
Inductive heating ...................................................................................................
Load variations ......................................................................................................
Varying cooling conditions ...................................................................................
Resistance variations ............................................................................................
Overheating in one part as a result of a fault in another ......................................
Wind ......................................................................................................................
Rain and snow ......................................................................................................
Distance to object .................................................................................................
Object size ............................................................................................................
From cold to hot ...................................................................................................
Rain showers ........................................................................................................
Emissivity ..............................................................................................................
Reflected apparent temperature ...........................................................................
Object too far away ...............................................................................................
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