Electricity: motive power systems – Automatic and/or with time-delay means
Patent
1998-07-06
2000-05-23
Ip, Paul
Electricity: motive power systems
Automatic and/or with time-delay means
318280, 318446, G05B 500, H02P 100
Patent
active
060669322
ABSTRACT:
A motor reversal protection system to protect driven equipment from the inadvertent or accidental reversal of direction of a three-phase electric motor should there be a reversal of phase in the transmission power lines by transposing any pair of the three power lines. The system detects the phase sequence of the applied power and automatically provides the driven equipment with the correct phase sequence within milliseconds of depressing the motor start push button. The need for a system reset is obviated in using this novel system design. The same principles of operation also apply for use with two-phase or DC power systems.
REFERENCES:
patent: 3554325 (1971-01-01), Savage
patent: 3671834 (1972-06-01), Buckeridge
patent: 3717803 (1973-02-01), Sweger
patent: 3745839 (1973-07-01), Ramstetter
patent: 4045682 (1977-08-01), Poorbaugh et al.
patent: 4499409 (1985-02-01), Bauer
patent: 4698560 (1987-10-01), Andrei-Alexandru et al.
patent: 5159368 (1992-10-01), Zemlin
patent: 5161083 (1992-11-01), Mohler et al.
patent: 5216212 (1993-06-01), Golowash et al.
patent: 5252897 (1993-10-01), Porter et al.
patent: 5279226 (1994-01-01), Ritchie et al.
patent: 5311108 (1994-05-01), Willard
patent: 5649808 (1997-07-01), Gruszecki et al.
Ip Paul
Taddeo Joseph H.
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