Rapid pressure rise circuit
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United States of America Patent
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-
Apr 18, 1989
Grant Date -
N/A
app pub date -
Jan 21, 1988
filing date -
Jan 21, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electronic relay control circuit is provided for liquid cooled electric power transformers. The control circuit senses the rate of change of internal tank pressure and operates its relays in response to a sudden pressure increase. Relay control connections are provided for operating transformer trip and annunciator circuits. The relay response is field adjustable.
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