METHOD FOR DETERMINING PRESENCE OR ABSENCE OF VOLTAGE Russian patent published in 2018 - IPC G01R19/155 

FIELD: measuring equipment.

SUBSTANCE: invention can be used to improve electrical safety during remote monitoring when working on electrical installations with a voltage higher than 1000 V of industrial frequency, especially in the field environment. In the method for determining the presence or absence of voltage in electrical products, in places of insulation absence a complex chemical compound of octahedral structure with a high magnetization degree is applied on them, when the current passes over 1000 V the chemical composition causes glowing and stops it when the current disappears. Ferric ferrocyanide with the modified formula (Ni_0.22, Mn_0.60Fe_0.18)_1.5[Cr(CN)₆]×7.6H₂O or nickel salt of formic acid Ni(HCOO)₂×2H₂O is used as a complex chemical compound of the octahedral structure with a high magnetization degree.

EFFECT: method for determining the presence or absence of voltage allows to quickly and accurately determine the voltage, reduces monitoring time and improves performance.

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