Transformer hot-spot temperature monitor

Details Transformer hot-spot temperature monitor Transformer hot-spot temperature monitor

1984-09-26

1986-11-18

Frankfort, Charles

Thermal measuring and testing

Temperature measurement

Combined with diverse art device

340646, 361 37, G01K 112

Patent

active

046232656

ABSTRACT:
A hot-spot temperature monitor for determining the hot-spot temperature of a transformer. The hot-spot temperature monitor determines the largest current flowing in the transformer and using this value calculates a temperature gradient. The temperature gradient represents the difference in temperature between the hot spot and the top-oil temperature. The top-oil temperature is also measured. The hot-spot temperature is calculated by adding the temperature gradient to the top-oil temperature. The hot-spot temperature sensor controls the transformer cooling units and can activate various alarms and indicators as desired.

REFERENCES:
patent: 2704841 (1955-03-01), Van Ryan
patent: 2834920 (1958-05-01), Lennox et al.
patent: 3793559 (1974-02-01), Ristuccia
patent: 3797314 (1974-03-01), Lampe et al.
patent: 4092864 (1978-06-01), Romanowski
patent: 4102185 (1978-07-01), Thompson et al.
patent: 4140899 (1979-02-01), Conway

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