Method and apparatus for changing the phase sequence of a comple

Details Method and apparatus for changing the phase sequence of a comple Method and apparatus for changing the phase sequence of a comple

1988-09-02

1989-09-12

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 52, 310 59, 310 89, H02K 1100

Patent

active

048663166

ABSTRACT:
A standard, predetermined phase sequence of the three-phase voltage output of an electrical power generator, as produced through conventional main leads in the generator lead box which interconnect three (3) generally, axially aligned pairs of connectors of first and second sets, is selectively reversible by the utilization of crossed main leads between two adjacent pairs of the connectors of the first and second sets. Each of the crossed main leads includes opposite end portions aligned with the diagonally-related and interconnected pair of connectors of the first and second sets, the end portions having corresponding bends therein for smoothly contouring and integrally joining the central portions thereof, and the central portions have complementary outward bends in at least the mutual crossing portions thereof to maintain a predetermined, minimum distance therebetween so as to satisfy voltage strike requirements. Insulating support plates maintain the required minimum distance between the mutual crossing portions and special, directional ventilating ducts compensate for increased eddy current heating of localized areas of the lead box.

REFERENCES:
patent: 3808489 (1974-04-01), Albright et al.
patent: 3903441 (1975-09-01), Towne
patent: 4172984 (1979-10-01), Daugherty et al.
patent: 4199700 (1980-04-01), Daugherty et al.
patent: 4488072 (1984-12-01), Archibald et al.

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