Thermal-imaging
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Temperature Rise Limits

Infrascan Thermal Imaging engineers compare the specific (hot) points on your thermal imaging report to the temperature rise limits tabled below. The closer the temperature is to the limit, the more severe the fault.
Infrascan has never had a major fault related event in our 15 year history.
Infrascan's interpretation of the Australian Standards:
AS 3768-1990
Surfaces of components
Description
Temperature rise
above ambient
For Metallic manual controls:
For Non Metallic manual controls:
55
Touched in normal operation but not continuously held:
Metallic
Non Metallic

70
80
Accessible but not touched in normal operation:
Metallic
Non Metallic

80
90
MORE
Screwed contacts
Uncoated copper + aluminium etc
50
Terminals for screwed or bolted connection to external conductors
50

AS 2467
Maintenance Procedures
Guidelines for the establishment of maintenance procedures.

AS/NZS 3439.1:2002
Cable
The operating temperature of unmarked PVC-insulated or elastomer-insulated cables is 75°C.
Other cables to a maximum of 105°C (Polythene, PVC, solid extruded PVC tubing, 1.0 mm thick, high temperature heat shrink tubing with a minimum walla thickness of 0.45 mm after shrinkage, etc).
This temperature must not be exceeded at any point where the insulation is relied upon.
Parts of Assemblies
Parts of ASSEMBLIES
Temperature rise 
above ambient
Terminals for external insulated conductors
70
Manual operating means: Metal
Manual operating means: Insulation
15
25
Accessible external enclosures & covers: Metal
Accessible external enclosures & covers: Insulation
30
40
Discrete arrangements of plug and socket-type connections
Equipment 
Specific
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