Pumps – Condition responsive control of pump drive motor – Single motor control element responsive to means sensing...
Patent
1987-12-18
1990-04-03
Freeh, William L.
Pumps
Condition responsive control of pump drive motor
Single motor control element responsive to means sensing...
417 19, 417 53, 417 32, 417 43, F04B 4900
Patent
active
049136259
ABSTRACT:
An automatic pump protection system is comprised of a plurality of sensors for measuring process parameters indicative of a loss of pump suction or of pump motor failure. Analysis of the parameters is performed by a microprocessor in order to determine whether conditions leading to a loss of pump suction or pump motor failure are present. The microprocessor then automatically initiates pump protective action in response to the foregoing analysis by tripping the pump or by providing an alternate suction source.
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Freeh William L.
Westinghouse Electric Corp.
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