DEVICE FOR PROTECTING WIRES OF ELECTRIC NETWORK AGAINST OVERHEAT Russian patent published in 1994 - IPC

Abstract RU 2022827 C1

FIELD: use of electric traction on railways. SUBSTANCE: device has current transducer, wind speed transducer and ambient temperature pickup, unit for computing overheat, non-linear converter, the first adder and actuating mechanism. The second and the third adders and five units of controlled factor are brought into the device additionally. Temperature dependence of convective heat transfer coefficient is accounted in the device. EFFECT: improved precision of control of temperature of wire protected; improved reliability of protection. 1 dwg

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RU 2 022 827 C1

Authors

Petrova T.E.

Figurnov E.P.

Dates

1994-11-15—Published

1991-02-25—Filed