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1. (WO2006121364) METHOD AND DEVICE FOR PREVENTING FIRE CAUSED BY DEFECTS IN ELECTRIC CIRCUITS AND ARRANGEMENTS

Pub. No.:    WO/2006/121364    International Application No.:    PCT/RU2005/000251
Publication Date: Nov 16, 2006 International Filing Date: May 6, 2005
IPC: G08B 17/00
H02H 3/08
H02H 3/52
Applicants: KOROLYOV, Igor Sergeevich
КОРОЛЕВ Игорь Сергеевич
KOROLYOV, Andrey Igorevich
КОРОЛЕВ Андрей Игоревич
NOVIKOVA, Elena Igorevna
НОВИКОВА Елена Игоревна
Inventors: KOROLYOV, Igor Sergeevich
КОРОЛЕВ Игорь Сергеевич
KOROLYOV, Andrey Igorevich
КОРОЛЕВ Андрей Игоревич
NOVIKOVA, Elena Igorevna
НОВИКОВА Елена Игоревна
Title: METHOD AND DEVICE FOR PREVENTING FIRE CAUSED BY DEFECTS IN ELECTRIC CIRCUITS AND ARRANGEMENTS
Abstract:
The inventive method for preventing fire in electric circuits and arrangements consists in measuring electric current of a controllable section, in separating a high frequency component therefrom, in amplifying and rectifying a first harmonic signal, in determining a spark current value, in forming the first harmonic signal from a measured current signal range, in measuring short-circuit, and/or overload and/or leak, and/or in measuring the electric circuit voltage, in forming a warning and/or switching off signal of the controllable section. The signal amplitudes and/or other parameters characterising a spark striking-suppression cycle are measured for determining a spark current. The inventive fire preventing device comprises a unit for forming a signal of first and higher harmonics, a unit for determining a spark current quantity, a unit for measuring short-circuit and/or overload and/or leak currents, and/or electric circuit voltage measuring currents, units for forming a warning and/or switching off the controllable section signal. Said spark current quantity determining unit is provided with devices for measuring signal amplitudes and/or other parameters characterising a spark striking-suppression cycle.