Circuit arrangement for large power transformers

Details Circuit arrangement for large power transformers Circuit arrangement for large power transformers

1984-10-18

1987-07-07

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Electromagnet or highly inductive systems

307105, 323340, 363 48, 361 3, 336146, H01F 3700

Patent

active

046789278

ABSTRACT:
A circuit arrangement for large power transformers with a low-voltage winding, a main high-voltage winding and a step winding as well as a step switching device at a Y-point side thereof, includes, at a location between a point connecting the step winding to the high-voltage main winding and the Y-point of the transformer, a capacitor in series with a resistor is connected electrically parallel to respectively current-carrying steps of the step winding, the capacitor and the resistor being of such dimensions as to decrease resonance amplitudes of the connecting point to ground, the capacitor being constructed of spirally wound strip lines formed of a resistance alloy, the strip lines being also of such dimensions as to reduce resonance amplitudes of the connecting points.

REFERENCES:
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patent: 2395116 (1946-02-01), Grandstaff
patent: 2547614 (1951-04-01), Bedford
patent: 3419792 (1968-12-01), Kasper et al.
patent: 3601622 (1971-08-01), Waaben
patent: 3684949 (1972-08-01), Yamachi et al.
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patent: 4041357 (1977-08-01), Clark
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patent: 4363060 (1982-12-01), Stich
patent: 4389691 (1983-06-01), Hancock
patent: 4392173 (1983-07-01), Rubin
patent: 4459629 (1984-07-01), Titus
IBM Technical Disclosure Bulletin, vol. 14, No. 9, Feb. 1972, p. 2805.

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