2YSL(st)CY Cable

What is VFD EMC 2YSL(st)CY Cable?

The VFD EMC 2YSL(st)CY cable is a low-voltage, unarmored and double-screened flexible motor supply cable featuring Class 5 flexible copper conductors, low-loss Polyethylene (PE) insulation, a dual Aluminium-foil and tinned copper wire braid (TCWB) screen, and an oil-resistant black PVC outer sheath complying with IEC/EN 60332-1-2 standards. It is designed for fixed installation and temporary moved interconnection up to 0.6/1kV between pulse-width-modulated (PWM) frequency inverters and AC drive motors under stringent electromagnetic compatibility (EMC) parameters.

Engineered to resolve capacitive current losses, motor shaft bearing currents, and high-frequency noise emission common in industrial drive applications, the cable combines low-dielectric PE insulation with a 100% optical coverage foil shield backed by a heavy-duty tinned copper braid. This layered shielding topology provides comprehensive 360-degree containment of high-frequency harmonics generated by IGBT switching circuits, safeguarding adjacent low-voltage instrumentation and digital communication networks across complex industrial plants.

VFD EMC 2YSL(st)CY Cable Construction

• Conductor: Class 5 flexible stranded bare copper conductors per IEC/EN 60228 offering superior flexibility and high conductivity.
• Insulation: Low-capacitance Polyethylene (PE) compound engineered for low dielectric loss and voltage spike withstand.
• Bedding / Inner Layer: Compact symmetrical core assembly designed for flexible industrial routing and reduced parasitic capacitance.
• Screen: Dual-layer screening system combining an Aluminium-Foil tape (100% coverage) and an overall Tinned Copper Wire Braid (TCWB) for maximum EMC suppression.
• Outer Sheath: Specially formulated oil-, grease-, and UV-resistant Polyvinyl Chloride (PVC) compound, flame retardant per IEC/EN 60332-1-2.
• Core Identification: 3 core + 3 split earth conductors or 4 full cores (Grey, Brown, Black, Green/Yellow).
• Sheath Colour: Black.

Applications

VFD EMC 2YSL(st)CY cables are specifically designed for variable speed drive systems, servo motor circuits, and power conversion links across heavy manufacturing environments where electromagnetic interference (EMI) suppression and oil resistance are mandatory. Their robust PVC jacket permits outdoor installation and medium mechanical stress routing in dry, damp, and wet environments, excluding direct ground burial.

Typical installation environments include:

• Variable Frequency Drives (VFD) & Inverters: Interconnecting pulse-width-modulated motor drives, converters, and industrial electric motors.
• Heavy Industrial Machinery & Pumps: Powering heavy-duty conveyor motors, industrial pumps, compressors, and extrusion equipment.
• Automated Production & Assembly Lines: Interconnecting multi-axis CNC machines and automated machinery near sensitive PLC networks.
• Chemical, Machining & Outdoor Processing Plants: Exposed installations subject to lubricating greases, industrial oils, UV radiation, and atmospheric moisture.

Specifications & Dimensions

The VFD EMC 2YSL(st)CY cable portfolio encompasses both 4-core designs and symmetrical 3-core plus 3-split-earth conductor configurations, with nominal power conductor cross-sections extending from 1.5mm² up to 240mm² (supporting current capacities up to 523A in air). Rated for an operating voltage of 0.6/1kV, the cable supports fixed installations from -30°C to +70°C and flexed moved applications from -5°C to +70°C, maintaining a minimum bending radius of 10× OD (fixed) and 25× OD (flexed). Conductor DC resistance values span from 13.3 Ω/km (1.5mm²) down to 0.0801 Ω/km (240mm²), with all overall diameters and weights strictly conforming to European harmonized manufacturing standards.

Standards

Huadong Cable Group manufactures and factory-inspects VFD EMC 2YSL(st)CY cables to guarantee full compliance with European mechanical safety and electromagnetic directives:

Design & Testing Standards: VDE / European Drive Specifications
Flame Retardancy: IEC/EN 60332-1-2 (Self-extinguishing)
Voltage Rating (Uo/U): 0.6/1kV
Temperature Spectrum: Fixed: -30°C to +70°C; Flexed/Installation: -5°C to +70°C
Regulatory Compliance: CE Marked, European Regulation EN 50575 (CPR Compliant), Low Voltage Directive 2014/35/EU, RoHS Directive 2015/65/EU, REACH EC 1907/2006

Frequently Asked Questions

Q: Why does 2YSL(st)CY cable use Polyethylene (PE) insulation instead of standard PVC?
A: Polyethylene (PE) has a much lower dielectric constant and lower mutual capacitance than PVC, which drastically reduces capacitive leakage currents, prevents voltage reflection spikes (dV/dt), and protects motor windings from premature dielectric breakdown.

Q: What is the mechanical benefit of the 3+3 symmetrical earth conductor design in VFD cables?
A: Dividing the ground into three symmetrical earth conductors placed in the outer interstices of the 3 phase cores balances ground currents, minimizes induced common-mode shaft currents, and prevents premature motor bearing failure.

Q: Can the VFD EMC 2YSL(st)CY cable be installed directly underground?
A: No, while the black PVC outer jacket is UV-resistant and suitable for outdoor and wet indoor installations, it is not approved for direct burial without protective conduits or additional mechanical armoring.

Q: What are Huadong Cable’s standard production and dispatch lead times for export orders?
A: Our standard production and dispatch lead time is typically 15-25 working days, depending on the required core configuration, conductor cross-section, and total project volume.

Why Choose Huadong Cable for VFD EMC 2YSL(st)CY Cable?

Huadong Cable Group manufactures VFD EMC 2YSL(st)CY motor supply cables in strict compliance with European drive specifications, backed by certified IEC/EN 60332-1-2 flame-retardant safety validations. To ensure maximum electrical conductivity, minimal power loss, and superior flexibility across inverter circuits, we utilize high-purity oxygen-free Class 5 flexible stranded bare copper conductors. Combined with low-capacitance PE insulation, an Aluminium-foil wrap, a heavy-duty tinned copper braid screen, and an oil-resistant black PVC outer jacket, the cable provides complete 360-degree electromagnetic shielding and thermal stability up to +70°C, eliminating harmonic cross-talk and protecting industrial motor drives from harsh shop-floor contaminants.

With more than 20 years of precision cable engineering expertise, Huadong Cable Group operates fully automated multi-core stranding, dual-screening, and extrusion lines certified to ISO 9001, CE, CPR (EN 50575), RoHS, and REACH protocols. By eliminating commercial middlemen, we offer competitive direct factory pricing, 100% Mill Test Certificates (MTC) tested in accredited testing facilities, tailored continuous drum lengths on ISPM 15 export wooden reels, and seamless door-to-port logistics for EPC contractors, drive system integrators, and industrial machinery builders worldwide.