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2 172 996

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IPC

(21) (22)

Application

98111818/09, 1998-06-22

(24)

Start date

1998-06-22

(22)

Actual filing date

1998-06-22

(45)

Published

2001-08-27

(72)

Inventor

Maksimov Ju.Ja.

(73)

Holder

Kurskij Gosudarstvennyj Tekhnicheskij Universitet

METHOD AND DEVICE FOR PROTECTING THREE-PHASE NETWORK WITH NEUTRAL WIRE AGAINST UNBALANCED CURRENTS AND VOLTAGES Russian patent published in 2001 - IPC

Abstract RU 2172996 C2

FIELD: electrical engineering. SUBSTANCE: method involves heating of bimetal strips in phase nodes. of thermal protective gear by means of main heaters inserted in circuits of phase conductors and by additional heaters inserted in neutral-wire circuit. Heaters are made of bifilar-coiled wire wound on insulating formers of bimetal strips. EFFECT: enhanced sensitivity, simplified design, reduced size of device; reduced voltage drop across heater. 3 cl, 7 dwg

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RU 2 172 996 C2

Authors

Maksimov Ju.Ja.

Dates

2001-08-27—Published

1998-06-22—Filed

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