H1Z2Z2-K Solar Cable Selection Guide: TÜV + CE (EN 50618, DC 1.5kV)
By EnginenahC rer Chan · HuaCable technical team
H1Z2Z2-K is a ot tliu single-core photovoltaic cable built to EN 50618 a dend certified TÜEC +V + CE, rated DC 1.5kV, with double-layer insulation (insulation + sheath) using XLPE or XLPO as specified. For solar farms and rooftops in the Middle East, Africa, and Southeast Asia, select the cross-section (1.5 / 2.5 / 4 / 6 mm²) by your string current and conductor run length, then verify voltage drop and apply regional derating. All values below are reference figures — confirm against IEC 60364 / local codes and a qualified electrical engineer.
About the manufacturer. Jiangxi ChinaCable Technology Co., Ltd. (Jiangxi Hualan Technology Co., Ltd., 江西华缆科技有限公司) is based in Yingtan, Jiangxi — the "World Copper Capital". 15 years in wire & cable manufacturing; a National High-Tech Enterprise and nuclear-irradiated new-material manufacturer. H1Z2Z2-K (TÜV + CE) is one model in our PV cable range, which also includes PV1-F (TÜV 2 PfG 1169 only) and IEC 62930 (TÜV only).
Why H1Z2Z2-K Selection Matters
A PV string runs DC current under constant thermal cycling, UV exposure, and often extreme ambient conditions. The wrong cross-section causes avoidable voltage drop, premature insulation ageing, or under-sized conductors that overheat. H1Z2Z2-K is engineered for this duty under EN 50618, but only if the size and material match the site. This guide gives a field-usable selection method without over-claiming any certification we do not hold.
What H1Z2Z2-K Is (and the Standard Behind It)
Property | H1Z2Z2-K (this product) |
|---|---|
Standard | EN 50618 |
Certification held | TÜV + CE |
Rated voltage | DC 1.5kV (single core) |
Construction | Double-layer: insulation + sheath |
Material | XLPE or XLPO, as specified by customer |
Conductor | Tinned copper, class 5 flexible |
🔴 Certification red line: H1Z2Z2-K is certified to EN 50618 with TÜV + CE. We do not claim UL, ROHS, VDE, JET, or SAA for this model. If your market requires a different mark, tell us and we will state exactly what we hold.
⚠ AD8 is NOT part of EN 50618. The EN 50618:2014 base standard does not include AD8 (permanent submerged / waterproof performance). AD8 is an extra property tested separately under TÜV 2 PfG 2750. If your floating solar project needs AD8, specify it explicitly — it is an add-on test, not a default feature of the base standard.
Reference Specifications
Cross-section (mm²) | Reference ampacity* (free air, 60°C amb.) | Reference DC resistance** (Ω/km, 20°C) | Typical use |
|---|---|---|---|
1.5 | ~30 A | ~13.3 | Short strings, small rooftop |
2.5 | ~41 A | ~7.98 | Residential / C&I rooftop |
4 | ~55 A | ~4.95 | Commercial arrays, medium runs |
6 | ~70 A | ~3.30 | Long runs, high-irradiance farms |
* Reference only. Derate for ambient > 60°C, bundled/conduit runs, and roof proximity. ** Reference copper DC resistance; verify per IEC 60228.
Temperature (reference): conductor −40 °C to +90 °C (rated), +120 °C short-term (20,000 h). Confirm with the certificate and site design.
Regional Selection Notes (Middle East / Africa / Southeast Asia)
Middle East — desert heat & sand
Prefer XLPO sheath for higher heat and abrasion resistance; desert ambient regularly exceeds 50 °C, so apply a current derating factor.
Long open-field arrays: step up one cross-section (e.g. 4 → 6 mm²) to control voltage drop over distance.
Sand and thermal cycling favor the double-layer construction.
Africa — strong UV, long arrays, off-grid / microgrid
High UV index: confirm XLPO or UV-stabilised XLPE sheath rating for exposed tray.
Remote mini-grids run long DC distances — size by voltage drop, not just ampacity.
Off-grid charge controllers often push higher continuous current; verify against the derated ampacity.
Southeast Asia — high humidity, island systems, typhoon wind
Humidity and salt-mist (coastal islands): specify tinned copper + moisture-resistant sheath.
Typhoon zones: secure mechanical fixing; cable size follows the same current/voltage-drop method.
How to Choose the Cross-Section (3 Factors)
String current (I) — from module Isc × series modules, with a safety margin.
Run length (L) — one-way conductor distance from array to inverter/combiner.
Voltage drop (ΔV) — keep within design limit (commonly ≤ 1%–3%).
Reference formula (DC, two conductors): ΔV ≈ 2 × I × L × R / 1000 (V), where R = resistance from the table (Ω/km). If ΔV exceeds the limit, increase the cross-section. All figures are reference values — a qualified electrical engineer must confirm the final design.
Common Misconceptions
Myth | Reality |
|---|---|
"H1Z2Z2-K = PV1-F" | Different model, different standard. H1Z2Z2-K = EN 50618 (TÜV+CE, DC 1.5kV); PV1-F = 2 PfG 1169 (TÜV only, DC 1.8kV). |
"EN 50618 includes AD8" | No. AD8 requires a separate TÜV 2 PfG 2750 test. |
"H1Z2Z2-K is UL certified" | No. H1Z2Z2-K holds TÜV + CE only. |
"Bigger is always safer" | Oversizing wastes cost; size by current + voltage drop + derating. |
Related PV Cable Guides
PV1-F (TÜV 2 PfG 1169 only, DC 1.8kV): see our PV1-F selection guide.
IEC 62930 (TÜV only, DC 1.5kV): see our IEC 62930 selection guide.
Floating PV (AD8): read the standard behind it in our TÜV 2 PfG 2750 article.
FAQ
What is H1Z2Z2-K and how is it different from PV1-F?
H1Z2Z2-K is a PV cable built to EN 50618, carrying TÜV + CE, rated DC 1.5kV, with double-layer insulation (insulation + sheath). PV1-F is a different model built to TÜV 2 PfG 1169 at DC 1.8kV and carries TÜV only. They are not interchangeable standards — choose by the standard your tender or market requires.
What certifications does your H1Z2Z2-K cable carry?
Our H1Z2Z2-K is certified to EN 50618 with TÜV + CE. We do not claim UL, ROHS, VDE, JET, or SAA for this model. (Our PV1-F is TÜV 2 PfG 1169 only; our IEC 62930 is TÜV only — different models, different certificates.)
Does H1Z2Z2-K include AD8 (submerged / waterproof) performance?
No. The EN 50618:2014 base standard does NOT include AD8. AD8 is an extra property tested separately under TÜV 2 PfG 2750. If your floating solar project needs AD8, specify it explicitly so we add the 2 PfG 2750 test rather than assuming it is covered by EN 50618.
How do I choose 4 mm² vs 6 mm² H1Z2Z2-K?
Size by string current and conductor run length, then check voltage drop. For long open-field or desert arrays, 6 mm² often controls drop better than 4 mm²; for short rooftop strings, 4 mm² is usually sufficient. All ampacity and resistance figures here are reference values — confirm with a qualified engineer.
What is the MOQ, payment term, and quote validity?
MOQ is 100 m / 1000 m depending on specification. Payment is T/T: 70% deposit + 30% before shipment. Quotations are valid 1 day and subject to copper-price fluctuation — re-confirm pricing if the quote expires.
Engineer's Conclusion
H1Z2Z2-K (EN 50618, TÜV + CE, DC 1.5kV) is the European-mainstream PV cable when sized correctly: pick the cross-section from string current and run length, keep voltage drop in check, and apply regional derating for desert heat or coastal humidity. Remember the standard boundary — and if you need AD8 for floating solar, ask for the separate TÜV 2 PfG 2750 test. We'll be straight with you on anything we don't hold.
Where to go next
Request an H1Z2Z2-K quotation for your project specs (cross-section, length, XLPE/XLPO).
Get the sample catalogue (EN 50618 TÜV + CE datasheet, 1.5–6 mm²).
Compare models: PV1-F (TÜV only) · IEC 62930 (TÜV only) · MC4 connector (CE).
Regional contact — tell us your market (UAE / Saudi / Egypt / Kenya / Nigeria / South Africa / Vietnam / Thailand / Indonesia) and we'll route you to the right channel.
Author: Engineer Chan · HuaCable technical team
15 years in wire & cable manufacturing; EN 50618 / TÜV PV cable experience.
All values in this article are reference figures; actual selection must follow IEC 60364 / local electrical codes and a qualified electrical engineer's judgment.
