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Proceedings Paper

Relationship between current load and temperature for quasi-steady state and transient conditions
Author(s): Bernard R. Lyon Jr.; Gary L. Orlove; Donna L. Peters
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Paper Abstract

Infrared thermographers involved in predictive maintenance programs often use temperature measurement as a means of quantifying the severity of a problem. Temperature is certainly an important factor in evaluating equipment. However, if you follow guidelines that are based solely on absolute temperature measurement--or on a temperature rise (Delta T)--you run the risk of incorrectly diagnosing your problems. The consequences of such actions can lead to a false sense of security, equipment failure, fire, and even the possibility of personal injury. Understanding the additional factors involved in diagnosis is essential for obtaining productive results. One of these factors is the load or current flowing through conductors. The load can have a drastic effect on the temperature of a component. Changing loads can cause additional concerns because temperature changes lag behind load changes. The purpose of this paper is to illustrate the relationship between load and temperature of a faulty connection. The thermal response of a changing load is also investigated.

Paper Details

Date Published: 30 March 2000
PDF: 9 pages
Proc. SPIE 4020, Thermosense XXII, (30 March 2000); doi: 10.1117/12.381580
Show Author Affiliations
Bernard R. Lyon Jr., Infrared Training Ctr. (United States)
Gary L. Orlove, Infrared Training Ctr. (United States)
Donna L. Peters, Infrared Training Ctr. (United States)

Published in SPIE Proceedings Vol. 4020:
Thermosense XXII
Ralph B. Dinwiddie; Dennis H. LeMieux, Editor(s)

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