Helical ropes

Helical ropes, type ВС-Dmin/Dmax-D-N-M type are used for the interposing fixture of ABC and bare conductors of a cross-section up to 150 mm² on the pin insulators of OTL towers.

Legend to the marking of helical ties, type ВС-Dmin/Dmax-D-N-M:

• B– rope;
• C – helix;
• Dmin/Dmax – minimum and maximum diameter of a wire/conductor;
• D – diameter of an insulator groove;
• N – type of fixture to an insulator:

A – one-sided rope;

Б – two tension ropes;

В – on two insulators together with rope A;

Г – central rope;

M – conductor type:

1 – bare;
2 – insulated.

Side rope consists of several spirals glued to each other and forming a power strand. Tension rope is made as a U-shaped loop consisting of several spirals. Central rope consists of several wires bent at a certain angle and radius in the central part.

All modifications of helical ropes meet the requirements of TU U 27.1 30255335-005:2013.