IEC 62930 vs EN 50618: Solar Cable Standards Compared
Quick answer: IEC 62930 and EN 50618 both specify 1.5 kV DC single-core photovoltaic (PV) cables — but they are not rivals. IEC 62930 is the international standard (published by IEC); EN 50618 is the European harmonized version (published by CENELEC) that adopts IEC 62930 and adds EU-specific requirements such as CPR fire-performance and CE marking. In practice, TÜV-certified solar cable is tested to EN 50618 (which references IEC 62930). For most EU and global PV projects, a cable compliant with both is what you want; the two standards describe the same cable class.
What Is IEC 62930?
IEC 62930 (full title: "Electric cables for photovoltaic systems") is the International Electrotechnical Commission standard for single-core, cross-linked insulated cables rated up to 1.5 kV DC used in photovoltaic systems. It defines:
Conductor: flexible tinned copper, Class 5.
Insulation / sheath: cross-linked compound — typically XLPE or XLPO (halogen-free) — built for long-term outdoor exposure.
Temperature: conductor up to 90 °C in operation (some XLPO grades to 120 °C), ambient −40 °C to +90/120 °C.
Tests: electrical, mechanical, thermal, weathering (ozone/UV), and flame behavior.
It is the baseline international reference used by manufacturers, test labs, and buyers outside the EU regulatory framework.
What Is EN 50618?
EN 50618 ("Electric cables for photovoltaic systems — CENELEC standard") is the European (CENELEC) harmonized standard for the same class of PV cable. It is essentially the European adoption of IEC 62930, with the additions required for the European market:
CPR compliance: as a construction product in the EU, the cable must meet the Construction Products Regulation (CPR) reaction-to-fire classes (e.g. at least Eca, often Dca/B2ca for public projects).
CE marking: required for free movement within the EU single market.
TÜV alignment: TÜV Rheinland / TÜV SÜD solar-cable certifications are issued against EN 50618 (which incorporates IEC 62930 requirements).
Put simply: EN 50618 = IEC 62930 + EU regulatory layer.
IEC 62930 vs EN 50618: The Key Differences
Aspect | IEC 62930 | EN 50618 |
|---|---|---|
Scope / region | International (IEC) — global reference | European (CENELEC) — EU harmonized |
Relationship | Base standard | Adopts IEC 62930 + EU add-ons |
Voltage class | 1.5 kV DC single-core PV cable | Same — 1.5 kV DC single-core PV cable |
CPR / fire class | Not covered (non-EU scope) | Must meet EU CPR reaction-to-fire classes |
CE marking | Not applicable | Required for EU market |
TÜV certification | Referenced, but cert issued to EN 50618 | The standard TÜV PV-cable cert is built on EN 50618 |
Common models | H1Z2Z2-K, PV1-F (both meet it) | H1Z2Z2-K, PV1-F (TÜV-marked) |
Do You Need IEC 62930 or EN 50618?
EU projects: specify cable certified to EN 50618 with a valid CPR class and CE marking. This automatically satisfies IEC 62930.
Non-EU global projects (Asia, Africa, Middle East, Americas): IEC 62930 is the accepted international reference; many buyers still ask for TÜV (EN 50618) as proof of quality.
Storage / high-temp runs: prefer XLPO insulation (120 °C) over standard XLPE (90 °C) — both standards allow either, as long as the rated temperature is met. Not sure what XLPO is? See our What Is XLPO Cable? guide.
Not sure which model fits? Compare the two mainstream types in our H1Z2Z2-K vs PV1-F guide, and read XLPE vs XLPO for the insulation choice.
Why TÜV-Marked Solar Cable Matters
For global buyers, a TÜV mark on solar cable is the fastest signal that the product was tested against EN 50618 / IEC 62930 in an accredited lab — not just claimed by the factory. It covers the full chain: conductor purity, cross-linking degree, weather resistance, and flame behavior. When you source PV cable, ask for the TÜV certificate number and confirm the model (H1Z2Z2-K or PV1-F) and voltage (often 1.5 kV DC, with 2 kV class available for 1500 V systems).
Frequently Asked Questions
Q: What is the difference between IEC 62930 and EN 50618?
A: They describe the same class of 1.5 kV DC PV cable. IEC 62930 is the international standard; EN 50618 is the European harmonized version that adopts IEC 62930 and adds EU requirements (CPR fire class, CE marking, TÜV alignment). A cable certified to EN 50618 already meets IEC 62930.
Q: Is EN 50618 the same as TÜV?
A: Not identical, but closely linked. EN 50618 is the European standard; TÜV is a third-party certification body that tests and certifies PV cable against EN 50618 (which references IEC 62930). A TÜV mark means the cable was independently verified to the standard.
Q: Which solar cable standard do I need for the EU?
A: For the European Union, specify cable certified to EN 50618 with a valid CPR reaction-to-fire class and CE marking. This automatically satisfies IEC 62930. For non-EU markets, IEC 62930 is the accepted international reference, though TÜV (EN 50618) is widely requested as proof of quality.
Q: Does IEC 62930 cover 1500V solar systems?
A: IEC 62930 defines the 1.5 kV DC PV cable class. 1500 V systems use the same cable construction (rated for the higher string voltage, commonly marked 2 kV DC class / 1500 V system voltage). Both IEC 62930 and EN 50618 address this single-core PV cable; confirm the printed voltage rating and your system design before purchase.
Q: What models of solar cable meet IEC 62930 / EN 50618?
A: The two mainstream TÜV PV-cable models are H1Z2Z2-K (double-insulated, halogen-free XLPO) and PV1-F (single-insulated). Both are built to EN 50618 / IEC 62930. See our H1Z2Z2-K vs PV1-F comparison to choose between them, or browse our solar PV cables.
Written by Engineer Chan, Chief Engineer at SolaCable Technology Co., Ltd. — manufacturer of TÜV-certified solar and low-voltage cables (H1Z2Z2-K / PV1-F, EN 50618 + IEC 62930) for global OEM and distribution buyers.
