PV Cable PV1-F 6.0mm² TUV 1500V DC Low Smoke Halogen Free Solar Wire

Cable Designation & Meaning

Construction: Tinned copper conductor, halogen-free cross-linked polyolefin (XLPO) insulation and sheath, single-core flexible photovoltaic DC cable.

Applicable Standards

• EN 50618:2014 — Electric cables for photovoltaic systems (DC rated voltage 1.8 kV)
• IEC 62930 — Photovoltaic system cables (single-core, XLPO insulated, rated up to 1.5 kV DC)
• TÜV 2 PfG 1169/08.2007 — TÜV specification for PV cables
• IEC 60228 / GB/T 3956 — Conductors (Class 5 flexible, tinned copper)
• IEC 60332-1 — Flame retardant (single cable)
• IEC 61034 — Smoke density (low smoke)
• IEC 60754 — Halogen content (halogen-free)
• IEC 60811 — Insulating and sheathing materials — Common test methods

PV1-F 1×6.0 mm² ( halogen-free) — Photovoltaic DC Cable Specification & Engineering Data

1. Product Overview & Rating Summary. PV1-F 1×6.0 v4 is the halogen-free B2 build of the single-core, extra-flexible, tinned-copper photovoltaic DC cable rated 0.6/1.0 kV DC (max system voltage 1.8 kV), built and certified to TÜV 2 PFG 1169 / EN 50618. This v4 uses a 1.0 mm halogen-free cross-linked polyolefin (XLPO) insulation rated B2-s1,d1,a1 — the European Euroclass for low-smoke, zero-halogen, low-acid-gas cable — with an extra-flex 126 × 0.25 mm tinned-copper conductor. It is the choice for indoor garage, attic, and balcony PV where occupants may be present during a fire, because standard XLPE insulation releases acid gas and dense smoke when burned. Finished diameter is about 5.7 mm, mass about 65 kg/km, and it is supplied in 500 m coils (also 200 m or 1000 m drums).

2. Layer-by-Layer Construction (Conductor to Outer).

3. Electrical Characteristics. The 6.0 mm² tinned-copper Class 5 conductor uses an extra-flex build of 126 × 0.25 mm tinned wires, giving a maximum DC resistance of 3.08 Ω/km at 20 °C. Routine proof is 3.5 kV AC / 5 minutes (or 6.5 kV DC / 15 minutes). Insulation resistance ≥ 250 MΩ·km. With the single core in free air at 30 °C, reference loading is about 60 A; at 60 °C ambient the rating derates to about 47 A. The voltage drop on a 100 m two-pole run at 60 A is about 3.7 V loop. Conductor loss at 60 A is about 6.9 W per metre at 90 °C.

Insulation & Sheath Data

Electrical Parameters

Reference values: 6.0 mm² Cu at 56 A, DC 1000 V → max DC power ≈ 56 kW per string (2 strings in parallel = 112 kW). Voltage drop at 56 A ≈ 19.0 mV/A·m (≈1.90% per 10 m at 56 A, 1000 V). At 70 A → ≈ 23.7 mV/A·m.

Temperature Characteristics

4. Thermal Response & Flame Behaviour. Halogen-free XLPO sustains a 90 °C continuous conductor temperature, with short-circuit capability up to 250 °C for ≤ 5 s. The cable is rated for service ambients between −40 °C and +90 °C and is cold-bend tested at −40 °C. The black carbon-loaded insulation is UV-resistant (1000 h UV preconditioning), ozone-resistant, and flame-retardant to B2-s1,d1,a1: B2 = bunched flame class, s1 = low smoke density, d1 = limited dripping, a1 = no corrosive acid gas emission. When burned, the cable releases no halogen acid gas (IEC 60754) and low smoke (IEC 61034, transmittance ≥ 80%).

Fire Performance (PV1-F — Standard)

5. Installation Practice & Handling. Minimum bend radius is 4 × OD (≈ 23 mm) for fixed installation, 6 × OD (≈ 34 mm) if repeatedly flexed. The cable is clipped directly onto the module frame or balcony railing, routed in PV-specific cable trays, or pulled into lightweight conduit. Use PV4 / MC4-type connectors crimped with the dedicated PV crimping tool. Polarity (+ / −) and the B2-s1,d1,a1 rating are printed along the black sheath. Laying temperature must not fall below −40 °C. At about 6.5 kg per 100 m, the cable is light and supplied in 500 m coils — ideal for indoor garage, attic, and balcony PV installs.

Mechanical & Installation Parameters

6. Typical Service Applications. This halogen-free B2 build is the default interconnection cable for: indoor garage PV, attic and roof-void PV, balcony and plug-in solar, solar-storage DC systems in occupied buildings, commercial indoor installations, and any PV array routed in enclosed spaces where occupants may be present during a fire. It is specified when the cable runs indoors or in occupied spaces — the standard XLPE build releases hydrochloric acid gas and dense smoke when burned, which is unacceptable in enclosed occupied spaces.

7. Testing & Quality Assurance Regime. Routine tests on every coil include conductor DC resistance ≤ 3.08 Ω/km at 20 °C, the 3.5 kV AC / 5 min withstand, the 6.5 kV DC / 15 min withstand, insulation resistance ≥ 250 MΩ·km, dimensional check (insulation ≥ 1.0 mm; OD ≈ 5.7 mm), and visual marking. Type tests include UV preconditioning (1000 h), thermal ageing (135 °C / 168 h), cold bend at −40 °C, heat shock at 150 °C, B2 flame classification per EN 50399, halogen acid gas per IEC 60754, smoke density per IEC 61034, ozone resistance, abrasion resistance, and tinned-copper strip check.

Cable Parameters

Cable Test Parameters

Cable Cross Section Structure

Cable Construction Description

8. Standards & Conformity. Design and production are governed by TÜV 2 PFG 1169 (German TÜV certification for PV cables), EN 50618 (European harmonised standard), and GB/T 32129 (Chinese national standard). Conductors satisfy EN 60228 Class 5. Flame performance follows B2-s1,d1,a1 (EN 50399 / IEC 60754 / IEC 61034). The cable carries the TÜV mark and is suitable for use in 1.8 kV DC PV systems.

9. Packaging, Storage & Logistics. Standard delivery is 500 m per coil (also 200 m or 1000 m drums), with bespoke cut lengths available on request. Each coil carries continuous marking: PV1-F, 1×6.0, 0.6/1.0 kV, + / −, B2-s1,d1,a1, supplier identity, production year, and sequential metre marks. Storage should be in dry, covered premises at −20 to +40 °C, shielded from direct sunlight.

10. Procurement Specification. State "PV1-F 1×6.0 mm² 0.6/1.0 kV DC — halogen-free B2-s1,d1,a1 build" together with the required length. Always order PV4 / MC4-type connectors and the dedicated crimping tool at the same time. Always request the factory test certificate, which must include the B2 flame classification report and the IEC 60754 / IEC 61034 halogen and smoke test results. Specify this v4 halogen-free B2 build for indoor occupied spaces; for outdoor commercial rooftop or ground-mount, the v1 standard XLPE build is sufficient

and lower cost.

11. Cable Industry FAQ.

• Q1: What is the difference between this v4 halogen-free build and the v1 standard build? The v4 uses 1.0 mm halogen-free XLPO insulation rated B2-s1,d1,a1 (low-smoke zero-halogen), while the v1 uses standard irradiated XLPE insulation rated IEC 60332-1 (single-cable vertical flame). The v4 releases no acid gas and low smoke when burned; the v1 releases hydrochloric acid gas and dense smoke.
• Q2: Why use halogen-free cable indoors? Standard XLPE insulation contains halogen compounds as flame retardants. When burned in an enclosed space, these release hydrochloric acid gas (corrosive to electronics and harmful to lungs) and dense smoke that obscures escape routes. The halogen-free XLPO build eliminates both.
• Q3: What do B2-s1,d1,a1 mean? B2 = Euroclass bunched flame rating (medium flame contribution). s1 = low smoke density (light transmissance ≥ 80%). d1 = limited burning droplets. a1 = no corrosive acid gas emission. This is the Euroclass combination for occupied indoor spaces.
• Q4: Why use 6.0 mm² for indoor garage PV? 6.0 mm² is used when the garage PV string has long DC home-runs (>15 m from roof tiles to wall-mounted inverter) or high-string-current bifacial modules, where 4.0 mm² would give excessive voltage drop.
• Q5: Why is it single-core, not two-core? PV strings carry DC at up to 1.8 kV. Running + and − in separate single-core cables keeps the installation modular and avoids loop-current heating in shared conductors.
• Q6: Why use tinned copper? Tinning protects the copper strands against oxidation and atmospheric corrosion over decades of service — critical because PV cables are expected to last 25 years.
• Q7: Why use MC4 connectors? MC4 (PV4) connectors are weather-sealed, polarised, and rated for 1.5 kV DC. They are crimped with the dedicated tool — hand-twisted terminals are the #1 failure point in PV DC arrays.
• Q8: Can this v4 be used outdoors? Yes — it is fully UV-rated (1000 h UV preconditioning) and weather-resistant. The halogen-free build is over-specified for pure outdoor tray-routed PV, but it is the right choice when the cable runs both outdoors and through an occupied indoor space.
• Q9: What is the maximum string voltage? PV1-F is rated for 1.8 kV DC system voltage, covering 1500 V PV strings with safety margin for open-circuit Voc at cold temperatures.
• Q10: How long does PV1-F last? When properly installed with correct connectors and routed out of standing water, PV1-F is designed for a 25-year service life matching the solar module warranty.
• Q11: Is the halogen-free v4 more expensive than the v1? Yes — the XLPO insulation and the additional IEC 60754 / IEC 61034 / B2 classification tests make the v4 about 15–25% more expensive per metre. It is worth the premium when the cable runs in occupied indoor spaces; for purely outdoor racking, the v1 standard build is sufficient.