The telescopic insulating stick PTU-AS-400-4-C type has a total length up to 6 m and is made of 4 undetachable modules.
The telescopic insulating sticks – PTU type – are provided with fix hexagonal coupling systems that allow the connection of other kinds of protective devices (e.g. MV/HV voltage detectors, phase clamps of the short-circuiting and earthing devices), adaptors or accessories provided with hexagonal rod of 12 mm.
The stick is fixed in working position by enlargement of their tubes (from the smallest to the biggest one) and blocking them through pushing buttons.
These sticks can be used to perform different operations during the workings in substations or to the overhead lines.