Wye-delta open transition motor starter with leading phase monit

Details Wye-delta open transition motor starter with leading phase monit Wye-delta open transition motor starter with leading phase monit

1991-04-16

1992-08-25

Shoop, Jr., William M.

Electricity: motive power systems

Induction motor systems

Primary circuit control

318778, H02P 126

Patent

active

051422131

ABSTRACT:
A wye-delta open transition motor starter provided with a leading phase monitor and a method of using the same such that transient currents during the open transition are limited to acceptable magnitudes.

REFERENCES:
patent: 3624471 (1971-11-01), Japp et al.
patent: 3823357 (1974-07-01), Sapper
patent: 4277734 (1981-07-01), Uhrner et al.
patent: 4338556 (1982-07-01), Hetzel
patent: 4425538 (1984-01-01), Wills
patent: 4736147 (1988-04-01), Shizhang
patent: 4833460 (1989-05-01), Sabo
Avoiding Switching Transient Damage in Motor Circuits by R. L. Nailen, P. E. Consulting-Specifying Engineer, Mar. 1987.
Why Wye-Delta Starters Cause Breakers to Trip; by Robert J. Wooddall, Electrical Apparatus, pp. 26-28, Nov. 1973.

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