GROUNDING CURRENT FLOW INDICATOR FOR AERIAL POWER LINE TOWERS

摘要

FIELD: electrical engineering. ^ SUBSTANCE: invention relates to relay protection and automatic control devices used in rural electric power circuits. The relay incorporates the winding, core and indicator, the winding being made of a steel conductor with a cross-section not smaller than that of the grounding device and the indicator representing a plane adjacent to the core and made up of transparent cells filled with nonfreezing suspension including a white liquid fraction and a black solid ferromagnetic fraction arranged on opposite cell sides to change their position under magnetic field effects thus varying the indicator outer side colour. ^ EFFECT: higher reliability, simplicity and fine representation of grounding current flow indication. ^ 2 dwg