Two phase high voltage insulation testing of multiphase windings

Details Two phase high voltage insulation testing of multiphase windings Two phase high voltage insulation testing of multiphase windings

1977-09-23

1979-05-01

Strecker, Gerard R.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

G01R 3112, G01R 3106

Patent

active

041526406

ABSTRACT:
Insulated multiphase electrical windings are tested by applying to both ends of one phase, a positive DC voltage for a fixed period of time and simultaneously to another phase an equal negative DC voltage is applied for the same fixed period of time and all remaining phases are grounded. The application of the positive and negative DC voltages is repeated until each phase of the multiphase windings has been tested with both a positive and negative voltage.

REFERENCES:
patent: 2890410 (1959-06-01), Holcomb
patent: 3684951 (1972-08-01), Harrold
patent: 3860866 (1975-01-01), Dornberger
"IEEE Recommended Practice for Insulation Testing . . . with High Direct Voltage", IEEE Std. 95-1977, pp. 1-28.

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