Connect moving field equipment with this Profibus SK drag-chain cable. The stranded copper pair has foam-skin PE insulation and is enclosed by aluminium-lined foil and a tinned copper braid. The SK construction is intended for preparation with compatible quick-connection plugs; the cable and connector should be specified together.
| Type/Area of Application | Drag Chain Applications |
| Cable Construction | 1x2x0.64 mm (stranded) |
| Inner Conductor Diameter | Copper, bare (AWG 24/19) |
| Conductor Insulation | Foam-skin-PE |
| Conductor Colors | red, green |
| Stranding Element | 2 conductors + filler |
| Wrapping | Polyester foil over stranded bundle |
| Shielding | Polyester foil, aluminum-lined |
| Total Shielding | Copper braid, tinned |
| Outer Jacket Material | PUR |
| Outer Diameter | 8.0 mm ± 0.4 mm |
| Outer Jacket Color | Violet |
| Characteristic Impedance@3-20MHz | 150 Ω ± 10 Ω | ||||
| Conductor Resistance | 84.0 Ohm/km max. | ||||
| Insulation Resistance | 1.00 GOhm x km min. | ||||
| Mutual Capacitance@1KHz | 35.0 nF/km nom. | ||||
| Working Voltage | 300V | ||||
| Test Voltage | 1.5 KV | ||||
| Attenuation | 9.6 | kHz | < | 3 | dB/km |
| 38.4 | kHz | < | 5 | dB/km | |
| 4 | MHz | < | 25 | dB/km | |
| 16 | MHz | < | 52 | dB/km | |
| Weight | approximately 70.0 kg/km |
| Min. Bending Radius (Laying) | 7.5 x OD mm |
| Operating Temp.Range, min. | - 40 °C |
| Operating Temp.Range, max. | +70 °C |
Stranded AWG 24/19 bare copper conductors with red and green insulation.
Violet PUR outer sheath, with an overall diameter of 8.0 ± 0.4 mm.
150 ± 10 ohms characteristic impedance at 3–20 MHz.
Choose connectors that accept the stranded conductors and the cable diameter. For a drag-chain installation, include the travel, speed, acceleration and required bending radius in the cable schedule. The listed laying radius is 7.5 times the overall diameter; the operating range is −40°C to +70°C.
Profinet Type A Cable, 100 Ohm, Solid Copper, PVC or PUR Sheath
Profinet Type B Cable, Flexible Data and Data-Plus-Power Versions
Profinet Type B+C Cable, Mobile and Drag Chain, PVC or PUR Sheath
What distinguishes this SK cable from a fixed-installation version?
It uses stranded copper conductors and a PUR sheath for the listed drag-chain application.
What screening surrounds the pair?
An aluminium-lined polyester foil and a tinned copper braid surround the insulated conductors and filler.
Which core colours are used?
The two signal cores are red and green; the outer sheath is violet.
What is the nominal cable diameter?
The construction specifies 8.0 mm, with a tolerance of ±0.4 mm.
What should be specified for the connector?
State the SK cable construction, stranded conductor size and overall diameter so the contact and stripping system match the cable.
