SYSTEM OF CONTINUOUS MONITORING OF TEMPERATURE OF CONTACTS OF OIL CIRCUIT BREAKERS Russian patent published in 2019 - IPC H01H33/68 H01H51/00 G01R31/00 

FIELD: electrical engineering.

SUBSTANCE: invention relates to the field of electrical engineering, in particular to systems for monitoring parameters of oil circuit breakers of medium voltage. System for continuous monitoring of temperature of working contacts of oil three-pole switches, containing information and technical network, pyrometric sensors arranged on busbars of operating contacts of switches and connected by means of a signal input-output module to a controller for signal processing, a database server and a visualization panel arranged in a data acquisition cabinet configured to collect, process and transmit temperature data from the pyrometric sensors to the information and technical network, according to the disclosed invention is additionally equipped with a surge protection device in form of a data transmission interface protection module and placed on lines between pyrometric sensors and a signal input / output module, wherein communication lines are made in the form of shielded cable for protection against electromagnetic fields, and current-conducting buses of working contacts of oil switches are coated with high-temperature heat-reflecting device.

EFFECT: technical result consists in improvement of temperature control of working contacts of medium voltage oil circuit breakers.

4 cl, 5 dwg