Factory-Direct Supply of Certified Wires and Conductors for Diverse Industrial Applications
LiYY （RVS）Flexible Control and Instrumentation Cable
Product Type: LiYY Flexible Control and Instrumentation Cable
Cable Category: Unscreened flexible control and signal cable for weak-current applications
Reference Designation: UNITRONIC LiYY type, based on VDE 0812
Construction: Fine-stranded bare copper / PVC insulation / PVC outer sheath
Conductor: Fine-stranded bare copper; 0.34 mm² reference design uses a 7-wire construction
Insulation: PVC compound, typically YI2
Outer Sheath: PVC compound, typically YM2
Sheath Color: Pebble grey similar to RAL 7032; other colors available according to order
Core Identification: DIN 47100 color code without repetition
Screen: None; LiYY is an unscreened cable
Operating Voltage: Peak value, not for power applications; 350V at 0.14 mm² and 500V at 0.25 mm² and above
LiYY Flexible Control and Instrumentation Cable
LiYY is an unscreened flexible PVC control and signal cable for weak-current applications in machinery, electronic control equipment, computer systems, office machines, instrumentation and measurement systems.
The cable uses fine-stranded bare copper conductors, PVC core insulation and a PVC outer sheath. Its DIN 47100 color coding and compact outer diameter support organized wiring in control panels and electronic equipment where a screened construction is not required.
Dimensional & Electrical Data
The following table follows the published UNITRONIC LiYY product data. Outer diameter, copper index and cable weight are nominal reference values for the listed configurations.
| Core Configuration | Nominal Cross-Section (mm²) | Overall Diameter (mm) | Copper Index (kg/km) | Approx. Cable Weight (kg/km) | Peak Operating Voltage (V) |
|---|---|---|---|---|---|
| 2 × 0.14 | 0.14 | 3.2 | 2.7 | 13.2 | 350 |
| 3 × 0.14 | 0.14 | 3.4 | 4.05 | 16 | 350 |
| 4 × 0.14 | 0.14 | 3.6 | 5.4 | 18.9 | 350 |
| 5 × 0.14 | 0.14 | 3.9 | 6.72 | 22.2 | 350 |
| 2 × 0.25 | 0.25 | 3.8 | 4.8 | 18 | 500 |
| 3 × 0.25 | 0.25 | 4.0 | 7.2 | 22 | 500 |
| 4 × 0.25 | 0.25 | 4.3 | 9.6 | 26.2 | 500 |
| 5 × 0.25 | 0.25 | 4.7 | 12 | 31 | 500 |
| 2 × 0.34 | 0.34 | 4.2 | 6.6 | 25 | 500 |
| 3 × 0.34 | 0.34 | 4.4 | 9.9 | 31 | 500 |
| 4 × 0.34 | 0.34 | 4.8 | 13.1 | 43.2 | 500 |
| 5 × 0.34 | 0.34 | 5.5 | 16.5 | 53.8 | 500 |
| 2 × 0.5 | 0.5 | 4.7 | 9.6 | 40 | 500 |
| 3 × 0.5 | 0.5 | 5.0 | 14.4 | 47 | 500 |
| 4 × 0.5 | 0.5 | 5.6 | 19.2 | 56 | 500 |
| 5 × 0.5 | 0.5 | 6.1 | 24 | 65 | 500 |
| 2 × 0.75 | 0.75 | 5.1 | 14.4 | 48 | 500 |
| 3 × 0.75 | 0.75 | 5.6 | 21.6 | 57 | 500 |
| 4 × 0.75 | 0.75 | 6.1 | 28.8 | 69 | 500 |
| 5 × 0.75 | 0.75 | 6.9 | 36 | 78 | 500 |
| 2 × 1.0 | 1.0 | 5.6 | 19.2 | 55 | 500 |
| 3 × 1.0 | 1.0 | 5.9 | 29 | 70 | 500 |
| 4 × 1.0 | 1.0 | 6.4 | 38.4 | 79 | 500 |
| 5 × 1.0 | 1.0 | 7.3 | 48 | 98 | 500 |
| 2 × 1.5 | 1.5 | 6.2 | 29 | 74 | 500 |
| 3 × 1.5 | 1.5 | 6.8 | 43 | 89 | 500 |
| 4 × 1.5 | 1.5 | 7.4 | 58 | 105 | 500 |
Basic Parameters
| Product Name | LiYY Flexible Control and Instrumentation Cable |
|---|---|
| Product Category | Unscreened flexible control and signal cable for weak-current applications |
| Reference Designation | UNITRONIC LiYY type; product naming and approvals depend on the ordered construction |
| Construction | Fine-stranded bare copper / PVC insulation / PVC outer sheath |
| Conductor | Fine-stranded bare copper; 0.34 mm² reference design uses a 7-wire construction |
| Insulation | PVC compound, typically YI2 according to the referenced VDE-based construction |
| Outer Sheath | PVC compound, typically YM2; pebble grey similar to RAL 7032 |
| Core Identification | DIN 47100 color code without repetition, according to the selected core count |
| Operating Voltage | Peak value, not for power applications: 350V at 0.14 mm²; 500V at 0.25 mm² and above |
| Test Voltage | 1200V at 0.14 mm²; 1500V at 0.25 mm² and above |
| Mutual Capacitance | Approximately 120 nF/km |
| Inductance | Approximately 0.65 mH/km |
| Minimum Bending Radius | Occasional flexing: 10 × outer diameter; fixed installation: 4 × outer diameter |
| Temperature Range | Occasional flexing: -5°C to +70°C; fixed installation: -40°C to +80°C |
| Flame Performance | Flame-retardant according to IEC 60332-1-2 for the applicable construction |
Key Features
Unscreened Control Cable
LiYY provides a compact PVC control and signal cable where a separate electromagnetic screen is not required.
Fine-Stranded Copper
Flexible copper conductors support panel wiring, equipment connections and occasional routing movement.
DIN 47100 Color Coding
Core colors support organized identification in multi-core control panels and electronic equipment.
Compact Outer Diameter
The compact round profile helps save space in control cabinets, electronic equipment and office machines.
Weak-Current Applications
Designed for signal, control and data transmission rather than high-current power distribution.
Multi-Core Selection
Core counts and cross-sections can be selected for instrumentation, automation and equipment wiring requirements.
Construction & Standards
Construction Sequence
Fine-stranded bare copper conductors are individually insulated with PVC. The color-coded cores are laid up and covered by an extruded PVC outer sheath. LiYY has no copper braid, foil screen or drain wire; screened applications should use LiYCY or CY as appropriate.
Reference Standard
The LiYY construction is based on VDE 0812 and uses DIN 47100 core identification in the referenced UNITRONIC product data. Final conductor size, core count, sheath compound, temperature range and approval marking must follow the ordered product specification.
- Based on VDE 0812
- DIN 47100 core identification
- IEC 60228-style fine-wire conductor reference
- IEC 60332-1-2 flame performance where applicable
- PVC insulation and PVC outer sheath
- Not intended for power applications
Typical Applications
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Frequently Asked Questions
As a factory, we offer flexible MOQ depending on the cable type. For standard stock items, MOQ is low; for customized specifications, please contact our sales team for a detailed quote.
Yes, Qiangli cables are manufactured in compliance with international standards such as UL, CE, TUV, and VDE. We provide full test reports and certificates upon request.
Absolutely. We have a dedicated R&D team that can customize cable structure, material, color, and printing to meet your specific project needs.
For standard products, lead time is usually 7-15 days. For large-scale project orders or customized products, it typically ranges from 20 to 30 days.
Yes, we provide free samples for most standard cables. You only need to cover the international courier costs. Contact us to arrange your sample shipment.