Modular electronic temperature controller

Details Modular electronic temperature controller Modular electronic temperature controller

G - Physics

05

D

340/154, 354/29

G05D 23/24 (2006.01)

Patent

CA 1255775

ABSTRACT OF THE INVENTION A method and system for controlling the temperature of liquid cooled power transformers. The winding temperature of a transformer winding is electronically computed from the actual top oil temperature and the incremental additional temperature resulting from transformer load current. One curve from a family of curves representing the incremental temperature for various transformers may be selected or programmed by adjustments made which simulate the incremental additional temperature which results from transformer winding current. The total temperature value resulting from the addition of both the top oil temperature and the incremental temperature are used to control indicators, cooling fans, circuit trips and retain an indication of the highest temperature occurring during the time period of interest. -13-

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