To Determine the Residual Lifetime of Electrical Joints and Contacts using Infrared Measurement
Electrical equipment is ageing — the produced power dissipation is constantly increasing. Nevertheless, electric switchgears should be operated as intensively and as long as possible, since they are extremely expensive.
As a consequence, such installations have to be inspected regularly. In order to ensure an uninterrupted power supply during diagnosis, infrared cameras are used. These allow to measure the temperatures without direct contact. The actual problem, however, is not the measurement of the temperatures itself, but the evaluation of the measured values. All previous methods exclusively evaluate the temperature of junction without considering the influences of environmental and load conditions. For this reason it is impossible to make a reliable statement about the condition of the joints and contacts.
Therefore, THETA, the Institute of Highvoltage and Highcurrent at Dresden University of Technology, RIBE GmbH & Co. KG Elektroarmaturen and Siemens AG I&S IS PGD 5 have jointly developed a method which allows to determine the residual lifetime of electrical installations out of their respective temperatures, ambient conditions and loads. There has been held an European patent on this method. The reliable information that you can gain with the help of our infrared diagnosis puts you into the position to minimise the risk of failure of your electrical installations and to plan a state-orientated maintenance.
Watch our video about Infrared Diagnosis to learn more about this topic!