СПОСОБ ЗАЩИТЫ КОММУТАЦИОННОЙ АППАРАТУРЫ И УСТРОЙСТВО ДЛЯ ЕГО ОСУЩЕСТВЛЕНИЯ

摘要

FIELD: overtemperature protection of switching devices and threaded contact joints of current-carrying parts in power supply circuits. ^ SUBSTANCE: proposed device designed to check up contacting current-carrying parts has substrate-mounted temperature sensor holding material capable of transfer from solid to liquid phase upon inadmissible temperature rise; in addition it is provided with spring-contact power unit and audio alarm unit; temperature sensor is provided with contacts and thermoprobe; temperature sensor contacts are installed in substrate on its one end and spaced apart by mentioned material; thermoprobe is installed on other end of substrate; one of temperature sensor contacts is directly connected to spring-loaded contact of power unit and its other contact, to second spring-loaded contact of power unit through audio alarm unit. ^ EFFECT: ability of on-line supply of reliable information about thermal condition of zones most liable to inflammation. ^ 2 cl, 4 dwg