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2 009 908

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C1

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IPC

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Application

5017222/11, 1991-11-22

(22)

Actual filing date

1991-11-22

(45)

Published

1994-03-30

(72)

Inventor

Novikov O.I.

(73)

Holder

Ural'Skoe Otdelenie Vserossijskogo Nauchno-Issledovatel'Skogo Instituta Zheleznodorozhnogo Transporta

DEVICE FOR PROTECTION OF THREE-PHASE RECTIFIER AGAINST OVERVOLTAGES, WITH SUPPLY OF RECTIFIER BRIDGES FROM STAR- AND DELTA-CONNECTED SECONDARY WINDINGS OF CONVERTER TRANSFORMERS Russian patent published in 1994 - IPC

Abstract RU 2009908 C1

FIELD: railway transport. SUBSTANCE: two three-phase transformers 11, 12 and diode three-phase bridge 17 are introduced to provide application of three-phase voltages with a phase shift of 60 el. deg. to the input of bridge 17 and decrease the number of used spark gaps by three times. EFFECT: enhanced reliability of operation and simplified servicing. 1 dwg

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RU 2 009 908 C1

Authors

Novikov O.I.

Dates

1994-03-30—Published

1991-11-22—Filed

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