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.
Bus Duct- GI Bus #1 Bus Joint
FDP- 118B-SG / Main Bus Duct Connections Bus/Bar Connection
Temperature Rise: 17oC
GI Bus #1 Section II Bus Joint
Temperature Rise: 5oC
400A Bus PlugSwitch Assembly/Bus Stab
Fuse Clip/Switch Assembly/Bus Stab
30A Bus Plug Fuse Clip/Switch Assembly/Bus Stab