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2 137 278

(13)

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IPC

(21) (22)

Application

97114970/09, 1997-08-18

(24)

Start date

1997-08-18

(22)

Actual filing date

1997-08-18

(45)

Published

1999-09-10

(72)

Inventor

Brjantsev A.M.Dolgopolov A.G.Evdokunin G.A.

(73)

Holder

Nauchno-Tekhnicheskij Tsentr Vserossijskogo Ehlektrotekhnicheskogo Instituta Im.V.I.Lenina

METHOD AND DEVICE FOR PROTECTING SATURATION-CONTROLLED REACTOR AGAINST INTERNAL SHORT CIRCUITS Russian patent published in 1999 - IPC

Abstract RU 2137278 C1

FIELD: electrical engineering. SUBSTANCE: protective gear responds to ac voltage appearing upon occurrence of any internal short circuit across points of reactor control windings electrically balanced with respect to ac current connected to reactor saturation source. Emergency current starts flowing in thyristors connected to these points in parallel opposition and in current transformer arranged around their bus system at output of saturation source; overcurrent relay operates in response to this current and passes signal for disconnecting reactor from supply mains. EFFECT: improved speed of response and simplified design of protective gear. 2 cl, 1 dwg

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RU 2 137 278 C1

Authors

Brjantsev A.M.

Dolgopolov A.G.

Evdokunin G.A.

Dates

1999-09-10—Published

1997-08-18—Filed