Solar Cables

Solar cables are essential components in photovoltaic (PV) energy systems, specifically designed to handle the unique demands of DC power transmission in harsh outdoor environments. These cables are critical for maintaining stable electrical performance between solar modules, inverters, junction boxes, and energy storage units. ETK Kablo’s solar cable portfolio offers certified, high-performance H1Z2Z2-K compliant cables for long-term operation in utility-scale solar farms, commercial rooftop installations, and residential PV systems.

Manufactured with a focus on UV resistance, thermal stability, and mechanical durability, ETK Kablo’s solar cables provide safe and reliable energy transmission in high-radiation, high-temperature, and chemically aggressive conditions.

Technical Overview and Construction Features

ETK Kablo’s solar cables are engineered in accordance with the EN 50618 standard and designed for voltages up to 1.5 kV DC. They are based on the H1Z2Z2-K structure, offering flexibility, halogen-free composition, and excellent thermal aging resistance. The construction ensures maximum reliability in prolonged outdoor exposure, contributing to the longevity of PV systems.

Core Elements:

• Conductor: Flexible, tinned copper Class 5 strands as per IEC 60228. Tinned copper enhances corrosion resistance, especially in humid and coastal climates.
• Insulation: Halogen-free cross-linked compound (typically XLPO or EPR-based) offering superior thermal endurance and electrical integrity.
• Outer Sheath: UV-resistant, ozone-resistant, and weatherproof cross-linked LSZH compound compliant with EN 50618 and TÜV specifications.

The result is a single-core, flexible DC cable optimized for continuous outdoor service in solar energy systems. Available in standard sheath colors (typically red and black) to distinguish polarity in PV string connections.

Standards

All ETK Kablo solar cables are produced in accordance with the following international and industry-specific standards:

• EN 50618 – Harmonized European standard defining requirements for H1Z2Z2-K solar cables
• IEC 62930 – International standard for photovoltaic wire
• IEC 60332-1-2 – Flame propagation
• IEC 60754-1/2 – Halogen acid gas emissions
• IEC 61034-2 – Smoke emission
• ISO 9001 – Quality management system for cable manufacturing
• RoHS & REACH compliant – Free from restricted substances and heavy metals

Application Areas and Industry Sectors

ETK Kablo’s solar cables are engineered for a wide range of photovoltaic applications where long-term performance and environmental resistance are essential. Application areas include:

• Utility-Scale Solar Farms: Interconnection between solar strings, combiner boxes, and central inverters in high-power outdoor PV plants.
• Commercial Rooftop Installations: Solar cables installed on flat or pitched commercial buildings where heat and UV resistance are required.
• Residential PV Systems: Compact, flexible cabling for roof-mounted solar arrays and inverter connections.
• Battery Energy Storage Systems (BESS): Integration with lithium-ion storage solutions in hybrid solar-plus-storage facilities.
• Agricultural PV Projects: Floating solar installations, greenhouse solar, or rural electrification projects in chemically active and humid zones.
• Solar Carports and EV Charging Infrastructure: Reliable DC transmission between rooftop panels and car charging stations.
• Industrial Facilities with BIPV: Building-integrated photovoltaics where cable routing must meet fire safety and EMI-resistance constraints.
• Off-Grid PV Installations: Remote area power supplies (RAPS), microgrids, and island electrification projects using standalone solar arrays.

Solar cables from ETK Kablo support stable and safe energy delivery in all these environments by combining flexibility, mechanical strength, and compliance with the highest fire and environmental safety standards.

ETK Kablo’s Solar Cable Portfolio

The solar cable range from ETK Kablo is available in a variety of cross-sections and configurations to meet global PV system requirements. All cables are based on the H1Z2Z2-K architecture:

• Conductor Sizes:
  – Standard cross-sections include 1x4 mm², 1x6 mm², 1x10 mm², and 1x16 mm²
  – Larger sizes (up to 1x35 mm²) available for high-current DC strings and long-distance runs
• Color Options:
  – Black (standard for negative) and red (standard for positive) sheaths
• Outer Diameter:
  – Optimized to ensure high flexibility and easy cable tray routing

Each cable is manufactured in ISO 9001 certified facilities, with quality testing at every production stage to verify dimensional accuracy, insulation integrity, and mechanical durability.

Environmental Safety and Sustainability

In addition to electrical and mechanical reliability, ETK Kablo’s solar cables support sustainable construction and environmental protection goals:

• Halogen-Free Design: Avoids release of toxic, acidic gases in case of fire, protecting people and sensitive electronics.
• Low Smoke Emission: Enhances visibility and evacuation safety in enclosed installations or building-integrated systems.
• Recyclable Materials: Cables are free from lead, mercury, and banned halogen compounds.
• Energy-Efficient Production: Manufactured in facilities powered partly by renewable energy sources.
• Reduced Carbon Footprint: Optimized raw material usage and efficient packaging reduce the environmental impact of logistics.

These features make ETK Kablo’s solar cables suitable for both green-certified building projects and sustainability-conscious solar investors.

Solar cables are the electrical backbone of photovoltaic systems, transmitting DC power between generation, conversion, and storage units while withstanding harsh weather and environmental challenges. ETK Kablo’s solar cable range—based on H1Z2Z2-K standards—offers high-performance, long-life, halogen-free solutions designed for global solar energy applications.

Whether used in large solar farms, off-grid installations, or BIPV systems, ETK Kablo’s photovoltaic cables deliver long-term reliability, safety, and international compliance. With extensive product testing, customization options, and global export capacity, ETK Kablo supports the transition to clean energy infrastructure—one cable at a time.