H1Z2Z2-K Solar Cable, EN 50618 | TUV R 50334045

EN50618 is a photovoltaic DC cable manufactured by Xinya Electronic Co., Ltd. It is rated AC 1.0/1.0 kV, DC 1.5 kV, -40 C to +90 C. The catalogue describes it as a photovoltaic DC construction. It is supplied in 5 recorded constructions spanning 1.5–10 mm², with an overall diameter of 4.7–7.4 mm, cut to the length you order.

Type designation: H1Z2Z2-K

EN 50618 is the harmonised European standard for single-core photovoltaic DC cable, and the cable type it defines is designated H1Z2Z2-K. Where a tender, a bill of materials or a datasheet asks for H1Z2Z2-K, this is the construction it means. Each part of the code carries a defined meaning.

• H1 — a harmonised cable in the 1.5 kV DC class. This line is rated AC 1.0/1.0 kV and DC 1.5 kV.
• Z2 (first) — insulation: halogen-free, cross-linked compound.
• Z2 (second) — outer sheath: halogen-free, cross-linked compound.
• K — flexible class 5 tinned-copper conductor to IEC 60228.

The designation describes the cable family, not the order line. It settles the material system, the voltage class and the conductor class, but it says nothing about cross-section, conductor resistance, current-carrying capacity or connector fit. Those come from the construction table below, so quote the size together with the type whenever the diameter or the current has to be confirmed.

For the TÜV specification that preceded EN 50618, see PV1-F (2 PfG 1169). For the international counterpart, see IEC 62930.

EN50618 at a glance

• 1.5–10 mm², across 5 listed constructions
• Stranded conductor throughout the documented range
• Overall diameter 4.7–7.4 mm
• Max. conductor resistance 1.95–13.7 Ω/km at 20 °C DC (roughly 0.6–4.2 Ω per 1,000 ft)

How EN50618 compares with its nearest alternatives

EN50618 and 2 PfG 1169 sit in the same catalogue group but are rated differently. Overall diameter runs 4.7–7.4 mm for EN50618 against 4.7–8.4 mm for 2 PfG 1169. EN50618 is the tighter of the two where harness space is limited. Size coverage is 1.5–10 mm² against 1.5–16 mm².

Conductor construction and selection

Every construction listed for EN50618 is a stranded conductor, which suits harnesses and assemblies that are flexed or routed around a bend. The resistance column gives the maximum permitted value for the conductor at 20 °C DC.

How to read the EN50618 table

“Insulation O.D. (mm)” is measured over the insulation, not over a jacket, tape or braid. “Cable O.D. (mm)” is the finished cable diameter, which is the value to quote for gland, grommet and connector sizing. Conductor resistance is stated at 20 °C DC per kilometre — divide by 3.281 for ohms per 1,000 ft.

Questions buyers ask about EN50618

Which sizes of EN50618 are available?

1.5–10 mm², across the 5 constructions in the table below. Sizes outside the table can be quoted on request.

Is EN50618 a stranded conductor?

Every construction documented for this line is stranded. Confirm the strand count you need — the “n/mm” figure in the table — because resistance and flexibility both depend on it, and two rows at the same size can differ.

What overall diameter does EN50618 run to?

The documented range is 4.7–7.4 mm. Quote the size, not the style alone, when the diameter has to fit a specific gland, grommet or channel.