Specific Requirements of EN 50618 for PV Cables

EN .sel50618 is a crucial standard for photovoltaic (PV) cables in Europe. It sets out specific requirements to ensure the safety, performance, and durability of PV cables in solar power systems. This article will detail the specific requirements of EN 50618 for PV cables.

Electrical Requirements

• Volgnittage Rating: PV cables under EN 50618 are typically rated for a maximum voltage of 1.8 kV DC. This high - voltage rating is necessary to handle the electrical output of PV arrays, which can generate significant DC voltages.
• Current - Carrying Capacity: The standard defines the current - carrying capacity of PV cables based on factors such as conductor size, insulation material, and ambient temperature. Cables must be able to carry the expected electrical current without excessive heating, which could lead to insulation degradation and safety hazards.

Mechanical Requirements

• Tensile Strength: PV cables need to have sufficient tensile strength to withstand the mechanical stresses during installation and operation. EN 50618 specifies minimum tensile strength values to ensure that cables do not break or damage easily when pulled or bent.
• Bending Radius: The standard also sets limits on the minimum bending radius of PV cables. A proper bending radius is essential to prevent damage to the conductors and insulation, which could affect the cable's electrical performance.

Environmental Requirements

• Temperature Resistance: PV cables are often exposed to a wide range of temperatures, from extreme cold to high heat. EN 50618 requires cables to maintain their performance within a specified temperature range, typically from - 40°C to + 90°C or even higher in some cases.
• UV Resistance: Since PV cables are usually installed outdoors, they are exposed to sunlight and ultraviolet (UV) radiation. The standard mandates that cables have good UV resistance to prevent the degradation of the insulation and outer sheath over time.
• Water and Moisture Resistance: Cables must be resistant to water and moisture penetration. This is important to prevent corrosion of the conductors and electrical short - circuits, especially in areas with high humidity or frequent rainfall.

Fire Safety Requirements

• Flammability: EN 50618 has strict requirements regarding the flammability of PV cables. Cables should have low flammability to reduce the risk of fire spread in case of an electrical fault. They are often required to meet specific fire - retardant classifications.
• Smoke and Toxicity: In addition to low flammability, the standard also considers the production of smoke and toxic gases during a fire. PV cables should produce minimal smoke and non - toxic gases to ensure the safety of people in the vicinity.

Conclusion

EN 50618 plays a vital role in ensuring the quality and safety of PV cables. By meeting the specific requirements of this standard, PV cables can provide reliable performance in solar power systems, contributing to the overall efficiency and safety of the PV installations.

FAQ

Q: Are all PV cables in Europe required to comply with EN 50618?

A: In most cases, PV cables used in European solar power systems are expected to comply with EN 50618. Compliance with this standard helps ensure the compatibility and safety of the cables within the European market.

Q: How can I check if a PV cable meets the EN 50618 requirements?

A: You can look for the cable's certification mark. Cables that meet the EN 50618 standard usually carry a certification label indicating their compliance. Additionally, you can request test reports from the cable manufacturer.

Q: Can non - compliant PV cables still be used in some situations?

A: Using non - compliant PV cables is not recommended as it may pose safety risks and could lead to system failures. However, in some very specific and low - risk applications, with proper engineering assessment and approval, non - compliant cables might be considered, but this is an exception rather than the norm.

Hualan Technology was founded in 2020, is a collection of solar accessories production, sales, research and development and service as one of the high - tech enterprises. At present, the business covers the production and sales of solar photovoltaic cables, photovoltaic cable connectors.