Temperature controller uses fluoroptic thermometer
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LumaSense Technologies product story
Edited by the Engineeringtalk editorial team
Apr 12, 2006
Temperature controller for direct, real time control of power transformers down to 25MVA is a primary controller to monitor hot spots, control cooling and provide protection.
Luxtron has released the Thermasset 2 temperature controller for direct, real time control of power transformers down to 25MVA.
It is a primary controller to monitor hot spots, control cooling and provide protection for apparatus engineers and system operators.
Available in two or four channel configurations, it provides full control with alarm status indicators for up to six customer-specific relay functions.
It shares many features with Luxtron's WTS-22 and Thermasset systems for fibre optic temperature measurement of transformer windings in the power utility industry.
The same fluoroptic thermometer technology is employed using an LED source to activate the sensors.
The Thermasset 2 uses ruggedised probes that require no calibration over the life of the transformer.
It meets 3kV surge protection requirement (IEEE C37.90.1- 1989).
Small and medium size transformers often take the brunt of the load in an overload condition and thus are most likely to be damaged without proper control.
Winding hot spot temperature measurements, said the company, are the only safe means to activate the cooling systems (fan and pumps) to provide transformer thermal protection from insulation damage.
Conventional winding temperature indicators only infer the hot spot by measuring top oil temperature.
The Thermasset 2 enables direct, real time, accurate measurement of transformer winding temperature thereby providing input to calibrate thermal models and enable dynamic load control.
The drift-free, calibration-free nature inherent in the fluoroptic technology makes these systems suitable for use in transformers.
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