DEVICE FOR PROTECTING CONDUCTORS OF OVERHEAD POWER TRANSMISSION LINES IN MULTIROLLER SUSPENSIONS AGAINST MECHANICAL WEAR Russian patent published in 2006 - IPC H02G7/05 

FIELD: power engineering.

SUBSTANCE: proposed device that can be used to protect conductors of overhead power transmission lines in multiroller suspensions at crossings through natural obstacle, such as water areas, mountain gorges, and the like, against fatigue wear is set of spirals of standard zinc-plated or aluminum alloy wires; wire spiral layers are different in length, hardness, and direction of coiling; for instance, hardness of internal layer is lower than that of external one but its length is greater than that of the latter by 100 - 1500 mm, and also if internal layer has left-hand direction of coiling, then that of external one is right-hand. Wire hardness of internal layer is higher then or, as a last resort, equal to that of external lay of wires but at the same time it is lower than hardness of external-layer wires of proposed device. This device provides for protecting conductors in multiroller suspensions at crossings of overhead power transmission lines against wear and at the same time it can be used to replace sleeves of multiroller suspensions worn out after long-time service of overhead power transmission line crossings to such extent that damage to aluminum lays of wires takes place.

EFFECT: enlarged functional capabilities of device.

3 cl, 2 dwg