Planetary Stranders/Cablers are cage type machines with backtwist (fixed or variable).
They utilizes the principle of stranding/cabling by minimizing the twisting of bar wire/insulated conductors around their own axis.
Planetary machines are designed in 2 versions: Light duty (L/D), for cabling insulated conductors with low bobbin weight and; heavy duty (H/D), for stranding bare wire with high bobbin weight.
The cage of a planetary machine can be set in one of 3 modes:
When running in a pure planetary mode, the cradle rotates one full revolution for every rotation of the cage in a direction opposite to that of the cage. The variable backtwist mode is programmed to compensate for lay length (pitch) and direction. In the rigid mode, the cradles are locked to the cage.
Planetary machine lines can be configured to assemble:
Concentrically instrument / Data / Control cables
Apply high tensile steel wire armouring
Strand transmission elements, i.e. OPGW, ACSR
Machine parameters are digitally monitored and controlled via a Programmable Logic Controller (PLC) and a menu driven touch screen so that at each stage the operator is guided to obtain the desired machine operation.