DC (PV) Solar Cable H1Z2Z2-K 4.0 mm² Single Core Tinned Copper XLPE/XLPO Insulated

DC (PV) Solar Cable H1Z2Z2-K 4.0 mm² Single Core Tinned Copper XLPE/XLPO Insulated 

H1Z2Z2-K 1×4.0 mm² Photovoltaic (PV) DC Solar Cable.

H​ = Harmonised EU designation · 1Z2Z2​ = halogen-free (HFFR) insulation + halogen-free (HFFR) sheath, both cross-linked · K​ = flexible Class 5 conductor · 1×4.0 mm²​ = single-core, 4 mm².

This is the current-generation replacement of legacy PV1-F​ (2 PfG 1169), built for 1500 V DC​ photovoltaic systems.

1.Cable Construction (inside → outside)

Both insulation and sheath are double-layer cross-linked HFFR​ — no PVC anywhere.

2.Electrical Parameters

3.Thermal & Current-Carrying Capacity

* Per EN 50618 maker tables (Nexans, Kuka, Midsummer, etc.).

Temperature correction (free-air base at 60 °C amb. = 55 A):​ ×1.00 @60 °C · ×0.91 @70 °C · ×0.82 @80 °C · ×0.71 @90 °C · ×0.58 @100 °C.

• Continuous conductor temp.:​ 90 °C​ (normal service)

• Peak conductor temp.:​ 120 °C​ for up to 20,000 h cumulative (Arrhenius life model) → design life 30–40 years​ outdoor.

• Ambient range (installation & service):​ −40 °C to +90 °C; lay-in min. −25 °C to 0 °C depending on compound.

• Min. bending radius:​ 4× OD fixed​ (~22 mm), 5× OD flexing​ (~28 mm).

4.Mechanical, Chemical & Environmental Performance

• Halogen-free:​ IEC 60754-1 (halogen acid gas ≈ 0; pH > 4.3, conductivity < 10 µS/mm)

• Low smoke:​ IEC 61034-2, light transmittance > 60%

• Flame retardant:​ IEC 60332-1-2 (single cable, self-extinguishing)

• UV resistance:​ EN 50289-4-17 Method A, 720 h+ UV, plus maker 4000 h prestige tests — suitable for permanent outdoor exposure without conduit.

• Ozone resistance:​ EN 50396 (cable intact after ozone chamber)

• Water resistance:​ AD8​ per EN 50525-2-21 Annex E — permanent immersion / direct burial​ acceptable without extra jacket.

• Hydrolysis / salt mist / ammonia:​ pass EN 60068-2-78 damp heat, HD 60364-5-52 condition AH3

• Tensile / bending fatigue:​ 100,000 reverse-bend cycles (Nexans class test), flexible Class 5 survives panel tracking movement and installer pulls

• MC4 compatibility:​ 4 mm² mates with standard MC4 (4–6 mm² crimp) connectors.

• Anticipated service life:​ ≥ 25 years (TÜV), 30–40 years typical per Arrhenius extrapolation.

5.Product Performance Summary

H1Z2Z2-K 1×4 mm² is the default DC string cable for modern 1500 V photovoltaic systems. Its three decisive advantages over legacy PV1-F or general-purpose H07 cables:

1. 1500 V DC rating with 1800 V margin​ — thicker XLPO wall suppresses partial discharge in 1500 V strings; PV1-F (1000 V DC) is not allowed in 1500 V systems.

2. Double cross-linked HFFR (insulation + sheath)​ — electron-beam cured, does not melt or flow at 120 °C, zero halogen, low smoke, AD8 submersible. Survives roof-top thermal cycling, desert UV, coastal salt fog, and floating-PV humidity in one product.

3. Class 5 tinned copper​ — tin coating prevents copper oxidation/corrosion at MC4 contacts over 25+ years; fine stranding tolerates panel micro-movement and tight tray dressing.

Trade-off: stiffer than rubber cord, not intended for continuous flexing like a drag-chain cable; 4 mm² is best for short-to-medium string runs​ (≤ ~30 m one-way at 15 A) — for longer runs or higher Isc, move to 6 mm².

6. Application Scope

• PV module → combiner box / string inverter​ DC interconnect (the primary use)

• Rooftop residential, commercial, and industrial PV (≤ 1500 V DC string voltage)

• Utility-scale ground-mounted solar farms, single-axis tracker wiring

• Floating photovoltaic (FPV) — AD8 water resistance is critical here

• Battery energy storage (BESS) DC side, charge controller to battery bank (low-voltage 12–48 V too, with correct fusing)

• Solar pump, solar street-light, off-grid cabin DC wiring

• MC4-terminated panel harnesses and extension leads

Not suitable for:​ AC mains distribution (>1 kV AC), conduit-only building wiring inside dwellings (use H07Z-K etc.), continuous flexing machinery, direct connection to grid without inverter.

7.Installation Notes (1×4 mm²)

8. Selection Cross-Reference

Quick spec snapshot

• Model:​ H1Z2Z2-K 1×4 mm² (EN 50618 / IEC 62930)

• Rating:​ 1.5/1.5 kV DC (max 1.8 kV), 1.0/1.0 kV AC

• Build:​ 56/0.285 mm tinned Cu Class 5 + 0.7 mm XLPO ins + 0.8 mm XLPO HFFR sheath

• OD:​ 5.6 mm · Weight:​ ~57 kg/km

• R₁₀:​ ≤ 5.09 Ω/km · Ampacity:​ 55 A @60 °C air / 44 A two-on-surface

• Temp:​ −40…+90 °C (120 °C peak 20 kh) · Bend:​ 4D fixed

• Fire/Env:​ LSZH Dca-s1,d2,a1, AD8, UV 720h+, ozone OK, 30-yr life