FIELD: electrical engineering.
SUBSTANCE: power transmission line insulator includes dielectric element (4) with outer surface forming skirt (5) with head passing along metal fastening fitting (7) of insulator, and device for detection of surface leakage current flowing along dielectric element (4), wherein said device comprises current-conducting ring (8) enveloping fitting (7) to get in contact with outer surface of dielectric element (4). Electrically insulating protective element (10) has the form of a sleeve with collar, which fits fitting (7), is located between ring (8) and fitting (7), and passes radially, overlapping ring (8) for its protection against environment.
EFFECT: invention is an improved device for detecting surface leakage currents.
12 cl, 6 dwg
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