As solar energy becomes the backbone of Europe’s energy transition, demands for safety, reliability, and long-term performance across photovoltaic (PV) systems are reaching new heights. From solar panels and inverters to the cables that connect every component, system integrity depends on consistent, high-quality standards. Among them, EN50618 has emerged as the critical benchmark for DC solar cables across the European market. Whether for product selection, project bidding, or regulatory compliance, EN50618 is now a key requirement in the solar energy value chain.
What is the EN50618 Standard?
EN50618 was introduced in 2014 by the European Committee for Electrotechnical Standardization (CENELEC). It provides a unified framework to help manufacturers, installers, and EPC contractors select and deploy PV cables that meet stringent safety, durability, and environmental criteria.
This standard ensures compliance with major EU regulations such as the Low Voltage Directive (LVD) and the Construction Products Regulation (CPR). It also facilitates the free movement of certified goods across the EU by aligning cable performance with European safety and construction requirements.
Applications in Solar PV Systems
EN50618-certified cables are primarily used to connect DC-side components in PV installations, such as solar modules, junction boxes, and inverters. Given their outdoor installation and exposure to harsh conditions (e.g. UV radiation, ozone, high/low temperatures), these cables must meet demanding mechanical and environmental criteria to ensure safety and longevity over decades of service.
Key Features of EN50618-Compliant PV Cables
Cables that meet the EN50618 standard demonstrate a combination of advanced material properties and electrical performance:
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Insulation and Sheath: Made from cross-linked, halogen-free compounds that offer superior thermal and electrical stability while reducing toxic gas emissions during fires.
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Voltage Rating: Suitable for systems with up to 1500V DC, addressing the needs of today’s high-voltage PV arrays.
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UV and Ozone Resistance: Designed to endure long-term sunlight exposure and atmospheric degradation without cracking or fading.
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Wide Temperature Range: Operational from -40°C to +90°C, with short-term resistance up to +120°C, making it ideal for diverse environments — from desert heat to alpine cold.
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Flame Retardant and CPR-Compliant: Meets strict fire performance classifications under the EU’s CPR, helping reduce fire spread and smoke toxicity.
How Does EN50618 Compare to Other Standards?
EN50618 vs TÜV 2PfG/1169
TÜV 2PfG/1169 was one of the earliest solar cable standards in Europe, introduced by TÜV Rheinland. While it laid the groundwork for PV cable testing, EN50618 is a pan-European standard with more rigorous requirements regarding halogen-free construction, flame retardancy, and environmental impact.
Importantly, any PV cable intended to bear the CE marking in Europe must comply with EN50618. This makes it not just a preferred option—but a necessity for full legal conformity across EU nations.
EN50618 vs IEC 62930
IEC 62930 is an international standard issued by the International Electrotechnical Commission (IEC). It’s widely adopted outside Europe, including in Asia, the Americas, and the Middle East. Like EN50618, it supports 1500V DC-rated cables and includes similar performance criteria.
However, EN50618 is specifically designed to comply with EU regulations, such as the CPR and CE requirements. In contrast, IEC 62930 does not enforce conformity with EU directives, making EN50618 the mandatory choice for any PV project within European jurisdiction.
Why EN50618 is the Go-To Standard for the EU Market
EN50618 has become more than just a technical guideline—it is now a critical standard in the European solar industry. It provides assurance to manufacturers, project developers, investors, and regulators alike that the cabling infrastructure will meet the most demanding expectations in terms of safety, reliability, and regulatory compliance.
For PV systems installed across Europe, especially those integrated into buildings or large-scale utility arrays, using EN50618-certified cables:
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Simplifies project approvals
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Increases system lifespan and safety
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Enhances investor and insurance confidence
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Ensures smooth CE marking and market access
Conclusion
In an industry where every connection matters, EN50618 sets the gold standard for solar DC cables in the European market. It represents the intersection of safety, performance, and regulatory compliance, making it an essential component of any modern PV project in Europe. As solar power scales up to meet the continent’s renewable energy goals, the cables built to EN50618 specifications will continue to play a vital role in powering a greener future.
Danyang Winpower Wire and Cable Mfg Co., Ltd. Manufacturer of electrical equipment and supplies, main products include power cords, wiring harnesses and electronic connectors. Applied to smart home systems, photovoltaic systems, energy storage systems, and electric vehicle systems
Post time: Jul-14-2025