Can you manufacture cables according to IEC, BS, VDE or other international standards?

Yes. We manufacture cables according to IEC, VDE, BS, AS/NZS and other international standards. OEM and customized specifications are also available.

How do you ensure cable quality?

Every cable undergoes raw material inspection, in-process quality control and routine electrical testing before shipment.

Which countries do you export to?

We export to Southeast Asia, the Middle East, South America, Africa and Europe with experience serving EPC contractors, distributors and utilities.

Can you provide technical documents before ordering?

Yes. Datasheets, test reports, certificates and technical drawings can be provided before order confirmation.

Can you supply customized cable lengths and drum packaging?

Yes. Cable length, drum type, cable marking and packaging can all be customized according to your project.

Can I customize the conductor material, insulation and sheath?

Yes. Copper or aluminium conductors, PVC, XLPE, LSZH insulation and various sheath materials are available based on project requirements.

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Home » Blog » What Is the Difference Between YY, CY and LiYCY Control Cables for Industrial Automation?

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What Is the Difference Between YY, CY and LiYCY Control Cables for Industrial Automation?

Understanding YY, CY, and LiYCY control cables is essential for selecting the right infrastructure for industrial automation, machine tools, and manufacturing plants. YY cables are unshielded, general-purpose control cables suited for dry or damp indoor environments where no electromagnetic interference (EMI) protection is required. CY cables feature a tinned copper wire braid, providing mechanical protection and basic electromagnetic shielding for signal integrity in moderately noisy electrical environments. LiYCY cables are manufactured to color-coding standards (such as [1]) with an overall tinned copper braid shield, specifically engineered for data transmission, process control, and instrumentation systems requiring high-frequency EMI/EMC suppression in tight spaces.

Technical Comparison Matrix

Parameter	YY Control Cable	CY Control Cable	LiYCY Control Cable
Primary Standard	VDE 0250 / VDE 0281	VDE 0250 / VDE 0245	DIN 47100 (Color Coding)
Shielding / Screening	Unshielded	Tinned Copper Wire Braid	Tinned Copper Wire Braid
Rated Voltage ( $U_0/U$ )	300/500V	300/500V or 450/750V	250V (Peak working voltage)
Temperature Range (Flexing)	$-5^\circ\text{C}$ to $+70^\circ\text{C}$	$-5^\circ\text{C}$ to $+70^\circ\text{C}$	$-5^\circ\text{C}$ to $+70^\circ\text{C}$
Temperature Range (Fixed)	$-30^\circ\text{C}$ to $+70^\circ\text{C}$	$-30^\circ\text{C}$ to $+70^\circ\text{C}$	$-30^\circ\text{C}$ to $+70^\circ\text{C}$
Conductor Material	Bare Annealed Copper Class 5	Bare Annealed Copper Class 5	Bare Annealed Copper Class 5
Insulation / Outer Jacket	PVC / PVC (Flame Retardant)	PVC / Transparent PVC	PVC / Transparent PVC
EMC Compatibility	None (No protection)	Moderate (Protects against external EMI)	High (Optimized for data/signal protection)

YY Control Cables: Unshielded Automation Solutions

Core Construction: Utilizes fine-wire bare stranded annealed copper conductors conforming to international standards like IEC 60228 Class 5 [1], insulated with specialized PVC, and housed in an extruded PVC outer sheath.
Key Specifications: Standard operating voltage rating of 300/500V, with a test voltage of 2000V. Flame retardant properties comply strictly with IEC 60332-1.
Application Scenarios: Ideal for assembly lines, conveyor belts, HVAC systems, and machine tool manufacturing where electrical noise or electromagnetic interference is absent.

CY Control Cables: Screened Industrial Power & Control

Core Construction: Integrates an inner PVC core layer wrapped in an overlapping tinned copper wire braid (TCWB) screen, covered by a transparent or gray PVC outer jacket.
Key Specifications: Offers a typical optical coverage of 80% to 85% braid screening, effectively suppressing external electromagnetic fields and high-frequency disturbances.
Application Scenarios: Deployed in production machinery, measurement and control engineering, and plant environments running alongside high-voltage power lines requiring moderate EMC protection.

LiYCY Control Cables: Precision Instrumentation & Signal Transmission

Core Construction: Built with multi-core fine-wire copper conductors color-coded strictly to DIN 47100 [2], wrapped in a plastic foil separator, shielded with a dense tinned copper braid, and finished with a durable PVC sheath.
Key Specifications: Designed primarily for low-voltage electronic applications with a peak working voltage rating of 250V (not rated for direct heavy power mains connection).
Application Scenarios: Widely specified for computer systems, electronic control equipment, weighing apparatus, office automation, and sensitive instrumentation loops prone to data packet corruption from EMI.

References

[1] [Wikipedia. IEC 60228 [EB/OL]. 2026-07-21.](https://en.wikipedia.org/wiki/IEC_60228)

[2] [Wikipedia. DIN 47100 [EB/OL]. 2026-06-18.](https://en.wikipedia.org/wiki/DIN_47100)