Li9YC11Y-TP Shielded Twisted-Pair PUR Drag-Chain Data Cable pairs DIN EN 60228 Class 6 extra-fine copper conductors into balanced DIN 47100 twisted pairs (2 × 2 × 0.14 mm² up to 12 × 2 × 0.75 mm²) beneath a high-coverage tinned copper wire braid and an oil-, fuel-, and coolant-resistant 11Y polyurethane (PUR) outer sheath. Engineered for 7.5 × OD continuous flexing from -30°C to +80°C, it protects differential serial data, encoder quadrature pulses, and instrumentation loops from magnetic crosstalk and industrial hydrocarbon exposure.
1. Application Scope & Oil-Resistant Paired Signal Cabling
Differential and low-level analog circuits inside moving equipment require both electromagnetic common-mode rejection (twisted pairs) and electrostatic shielding (braid) wrapped in a chemically inert jacket:
- Incremental, SSI & EnDat Position Encoders: Balanced
A/A-bar,B/B-bar,Z/Z-bar, and clock/data differential pairs along linear axes, press brakes, and CNC tool changers. - RS-485 / RS-422 / Modbus RTU & Sensor Field Wiring: Low-capacitance PP/TPE-E pairs sustain clean differential transitions across long drag-chain strokes without inter-pair coupling.
- Oil, Fuel & Coolant-Exposed Skids & Test Benches: Hydrocarbon- and lubricant-resistant
11Ypolyether PUR outer sheath withstands hydraulic fluid, diesel/gasoline splash, and synthetic ester coolants on automotive powertrain and oilfield test stands. - Strain-Gauge Load Cells & Analog 4-20 mA Loops: Twisted-pair cancellation rejects 50/60 Hz and VFD PWM magnetic fields inside multi-cable steel or polymer e-chains.
| Paired / Screened Cable Type | Conductor & Pair Build | Outer Sheath | Primary Installation Duty |
|---|---|---|---|
| Li9YC11Y-TP Twisted-Pair PUR (This Page) | Class 6 fine-stranded twisted pairs (0.14-0.75 mm²) | 11Y Oil/Fuel-Resistant PUR | Continuous linear drag chains (7.5 × OD), RS-485, encoders & oily skids |
| Li9YC11Y Multi-Core PUR | Class 6 concentric non-paired cores (0.14-0.75 mm²) | 11Y Oil-Resistant PUR | Compact discrete I/O & single-ended sensor harnesses in drag chains |
| Individually Pair-Screened Feedback | Individually screened pairs + overall braid | 11Y PUR | Mixed-voltage resolver/encoder + DC power supply servo feedback cables |
| Composite Power + CAT5e Data Cable | Power cores + 100 Ω Cat5e data quad/pairs | Heavy-duty TPU / PUR | Combined power + Ethernet/PLC communication leads |
2. Cable Construction (Pairwise-Twisted Li9YC11Y-TP)
Matching the stepped cutaway of TEBAOFLEX Li9YC11Y-TP, each layer balances crosstalk suppression with multi-million-cycle carrier mechanics:
9Y / 12Y) delivering low mutual capacitance and zero core-to-core stiction.≥ 85% optical coverage) engineered with a flex-stable braid angle for continuous carrier flexing.EMC & Pair Termination Note: Keep each twisted pair intact right up to the connector pins (≤ 12 mm untwisted length) and bond the overall tinned copper braid 360 degrees at the cabinet bulkhead. Maintain at least 7.5 × OD bend radius and avoid twisting along the longitudinal axis during carrier installation.
3. Technical Characteristics
| Parameter | Engineering Specification | Standard / Test Basis |
|---|---|---|
| Peak Operating Voltage | 250 V (0.14 - 0.34 mm²) | 350 V (from 0.50 mm²) | Adapted DIN VDE 0812 |
| AC Test Voltage | 1,500 V AC (core/core & core/screen) | EN 50395 / DIN VDE 0472 |
| Mutual Capacitance (800 Hz) | Pair core/core approx. 70 nF/km | Core/screen approx. 120 nF/km | PP / TPE-E low-permittivity dielectric |
| Characteristic Impedance Ref. | Approx. 85 - 110 Ω (cross-section dependent; non-Cat swept) | Balanced twisted-pair geometry |
| Operating Temperature | Flexing: -30°C to +80°C | Fixed: -40°C to +80°C | 11Y PUR elastomer system |
| Minimum Bending Radius | Continuous drag chain: 7.5 × OD | Fixed: 4 × OD | Controlled linear cable-carrier motion |
| Fluid & Flame Resistance | Mineral oil, synthetic coolant & aliphatic fuel splash; halogen-free; flame-retardant | EN 60811-404 / IEC 60754-1 / IEC 60332-1-2 |
4. Representative Twisted-Pair Schedule (2 × 2 × 0.14 to 12 × 2 × 0.75 mm²)
Includes all documented TEBAOFLEX twisted-pair reference builds (2×2×0.14, 6×2×0.25, 8×2×0.50, 10×2×0.75 mm²) alongside popular 3-, 4-, and 12-pair encoder and instrumentation sizes:
| Part Code | Pair Count × Size (mm²) | Peak Voltage | Nominal OD (mm) | Min. Chain Bend (mm) | Copper Index (kg/km) | Approx. Weight (kg/km) |
|---|---|---|---|---|---|---|
LI9YC11Y-TP-2X2X0.14 | 2 × 2 × 0.14 | 250 V | 6.1 | 46 | 17 | 42 |
LI9YC11Y-TP-4X2X0.14 | 4 × 2 × 0.14 | 250 V | 7.1 | 54 | 29 | 64 |
LI9YC11Y-TP-3X2X0.25 | 3 × 2 × 0.25 | 250 V | 7.2 | 54 | 38 | 78 |
LI9YC11Y-TP-4X2X0.25 | 4 × 2 × 0.25 | 250 V | 7.9 | 60 | 48 | 95 |
LI9YC11Y-TP-6X2X0.25 | 6 × 2 × 0.25 | 250 V | 9.8 | 74 | 75 | 133 |
LI9YC11Y-TP-4X2X0.34 | 4 × 2 × 0.34 | 250 V | 8.8 | 66 | 61 | 118 |
LI9YC11Y-TP-4X2X0.50 | 4 × 2 × 0.50 | 350 V | 10.6 | 80 | 84 | 154 |
LI9YC11Y-TP-8X2X0.50 | 8 × 2 × 0.50 | 350 V | 15.7 | 118 | 149 | 251 |
LI9YC11Y-TP-10X2X0.75 | 10 × 2 × 0.75 | 350 V | 19.3 | 145 | 267 | 459 |
LI9YC11Y-TP-12X2X0.75 | 12 × 2 × 0.75 | 350 V | 20.8 | 156 | 312 | 525 |
5. Frequently Asked Engineering Questions
Why specify twisted pairs (Li9YC11Y-TP) instead of parallel multi-core data cables?
Twisting forward and return signal wires together cancels induced magnetic noise and sharply lowers crosstalk between adjacent channels. It is recommended over non-paired Li9YC11Y Multi-Core PUR Data Cable whenever wiring differential RS-485/RS-422 ports, incremental/SSI encoders, or bridge load cells.
How does Li9YC11Y-TP perform in oil-, fuel-, and coolant-exposed industrial environments?
Its 11Y polyether polyurethane jacket passes EN 60811-404 oil testing and resists mineral hydraulic oils, diesel/aliphatic hydrocarbon splash, and synthetic cutting fluids far better than PVC instrument cables that stiffen and crack when plasticizers leach out.
Are conductors supplied in tinned copper or bare copper?
TEBAOFLEX supplies Class 6 fine-stranded conductors in either tinned copper (matching the corrosion-resistant silver-finish strands shown in our cutaway for humid/oilfield atmospheres and D-Sub/M12 soldering) or bare copper per customer BOM.
Is this cable rated for continuous multi-axis robotic torsion?
Standard Li9YC11Y-TP is engineered for controlled linear drag-chain bending (7.5 × OD). For 6-axis robotic wrists requiring ±180°/m torsion, specify torsion duty during inquiry so we can quote a PTFE-wrapped torsional pair build.
Where can I explore additional shielded control and instrumentation cables?
Browse our Industrial & Control Cables and Oil, Gas & Marine Cables ranges for armoured pair instrumentation, servo feedback, and VFD cables.
Specify Your Li9YC11Y-TP Twisted-Pair PUR Drag-Chain Cable
Send your pair count × cross-section (0.14 to 0.75 mm²), tinned or bare copper preference, signal protocol, carrier bend radius, and drum length for a technical review and factory quote.
