Surveillance device for connection sleeve of high-voltage overhead line, has detection unit to detect temperature rise in sleeve, for provoking defect indication unit to indicate defect, and clips to mount device on sleeve

摘要

The device (4) has a temperature detection unit (18) to detect temperature rise in a connection sleeve (1), for provoking a defect indication unit (14) to indicate the defect. A component made of shape memory alloy has two ends integrated to two parts of a surveillance device body, respectively, to retain or release a flap (16), based on the temperature rise. Clips mount the device on the sleeve.