Overhead bus ducts are often overlooked or neglected when performing electrical maintenance. Location and accessibility can make efficient bus duct maintenance a rather difficult task.

Infrared testing proves to be an efficient and effective method of catching potential trouble spots in bus work. Overheating at bus joints can easily be identified and problems with individual bus switches can also be pinpointed.

The following images represent some of the various types of problems located in bus duct.

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Bus Joint

Bus Duct- GI Bus #1 Bus Joint

Object Temp:29^oC
Reference Temp:29^oC
Temperature Rise:7^oC

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Bus/Bar Connection

FDP- 118B-SG / Main Bus Duct Connections Bus/Bar Connection

Object Temp:42^oC
Reference Temp:25^oC
Temperature Rise: 17^oC

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Bus Joint

GI Bus #1 Section II Bus Joint

Object Temp:27^oC
Reference Temp:22^oC
Temperature Rise: 5^oC

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Bus Joint

400A Bus PlugSwitch Assembly/Bus Stab

Object Temp:119^oC
Reference Temp:83^oC
Temperature Rise:36^oC

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Fuse Clip/Switch Assembly/Bus Stab

30A Bus Plug Fuse Clip/Switch Assembly/Bus Stab

Object Temp:128^oC
Reference Temp:76^oC
Temperature Rise:52^oC

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