Detecting local overheating in liquid-cooled windings of electri

Details Detecting local overheating in liquid-cooled windings of electri Detecting local overheating in liquid-cooled windings of electri

1987-01-08

1989-02-28

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 54, 310260, G01N 2514, G01R 3108, H02K 924, H02K 920

Patent

active

048088676

ABSTRACT:
A method for determining overheating in liquid-cooled windings of electric machines includes acoustically monitoring cooling liquid with at least one sound pickup, and detecting noises generated by bubbles in the event of local overheating if the boiling point of the cooling liquid is exceeded. An apparatus is also provided for carrying out the method.

REFERENCES:
patent: 2518518 (1950-08-01), Beldi
patent: 3626282 (1971-12-01), Brewer
patent: 3755702 (1973-08-01), Willyoung
patent: 4466746 (1984-08-01), Hancock et al.

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