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Brand: Helukabel
Helukabel SOLARFLEX-X H1Z2Z2-K 1500 V DC Solar Cable
Description
The Helukabel SOLARFLEX-X H1Z2Z2-K is a single-core cross-linked, halogen-free PV cable for wiring solar modules and strings, rated 1000 V AC and 1500 V DC. The conductor is finely stranded tinned copper, insulation and sheath are cross-linked compounds, and the cable is UV-, ozone-, weather- and water-resistant to DIN EN 50618. It is suitable for outdoor use and direct burial, and is available as black, red and blue single cores.
Technical specifications
| Parameter | Specification |
|---|---|
| Type | SOLARFLEX-X H1Z2Z2-K, single core (x = without protective conductor) |
| Standard basis | Cross-linked single-core cable acc. to DIN VDE 0283-618 / DIN EN 50618 |
| Nominal voltage | AC U0/U 1000/1000 V; DC U0/U 1500/1500 V |
| Test voltage | 6500 V |
| Temperature range | Flexible -25 °C to +60 °C; fixed -40 °C to +90 °C |
| Conductor temperature | Permissible operating +120 °C; short circuit temperature +250 °C (max. 5 s) |
| Minimum bending radius | Flexible 6x outer diameter; fixed 4x outer diameter |
| Conductor | Tinned copper, finely stranded, DIN VDE 0295 Class 5 / IEC 60228 Class 5 |
| Insulation and sheath | Cross-linked compound; sheath colours blue, red or black (see table) |
| Tests | Halogen-free DIN EN 60754-1; flame-retardant DIN EN 60332-1-2; smoke density DIN EN 61034-1+2; UV, ozone and weather resistance and current-carrying capacity per DIN EN 50618; water-resistant; short-circuit and earth-fault proof per DIN VDE 0100-520 |
| Approvals | EAC; TÜV Rheinland |
| Cross-sections | 2.5 to 240 mm² |
Using it in a PV system
Helukabel specifies the cable for wiring solar modules and notes it is suitable for direct burial but not for permanent installation in water. The maximum DC voltage of the system must not exceed 1.8 kV, and the cable can be used in and on devices and systems with protective insulation (protection class II). The installation instructions of the data sheet must be observed. Tinned copper, the cross-linked jacket and the +120 °C conductor rating suit rooftop and ground-mount arrays in high solar load, but cable temperature and derating should be checked for the actual route.
Cable colours help with polarity: red is normally used for positive and blue or black for negative, but the project design decides. The colour is selected through the part number, so the same size appears in three part numbers.
Sizes and part numbers
| mm² (1 core) | Outer diameter mm (min – max) | Weight kg/km (approx.) | Blue part no. | Red part no. | Black part no. |
|---|---|---|---|---|---|
| 2.5 | 4.8 – 5.4 | 44 | 713544 | 713543 | 713529 |
| 4 | 5.2 – 5.9 | 59 | 713546 | 713545 | 713530 |
| 6 | 5.8 – 6.4 | 80 | 713570 | 713569 | 713531 |
| 10 | 6.9 – 7.7 | 125 | 713572 | 713571 | 713532 |
| 16 | 7.7 – 8.5 | 191 | 11022069 | 11022068 | 11022067 |
| 25 | 10.0 – 10.8 | 297 | 11022072 | 11022071 | 11022070 |
Larger sizes continue to 240 mm² in the data sheet.
Documents and quotation
The Helukabel data sheet (02.03.2026) is attached. Seven Star LLC supplies Helukabel cables in Oman against the part number. Confirm colour, cross-section, drum length and connector system. See also the solar power category.
Datasheets & Documents
- Datasheet HELUKABEL SOLARFLEX-X H1Z2Z2-K data sheet (PDF, 02.03.2026) Download
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About brand
HELUKABEL is the German manufacturer and supplier of cables, wires and cable accessories, with a range that covers control, power, data, fire-resistant and drag-chain cables. Helmut Luksch and his wife founded the company in 1978 in Hemmingen, near Stuttgart. The name combines the first letters of his first and last name (HElmut LUksch) with the word for cable (Kabel). It has made its own cables since 1988.
Seven Star LLC is an independent supplier in Muscat. We list HELUKABEL control, power, VFD, data and fire-resistant cables and supply them to contractors, panel builders and plants in Oman and the GCC by type, cross-section and length.
HELUKABEL at a glance
| Established | 1978, Hemmingen near Stuttgart, Germany, by Helmut Luksch |
|---|---|
| Manufacturing | Own production since 1988, starting at the Windsbach plant |
| Product families | Control and power cables, screened VFD motor cables, data and bus cables, fire-resistant and halogen-free cables, flexible rubber and welding cables, cable glands and accessories |
| Ownership | Family-owned, managed by the Luksch family |
HELUKABEL cables we list
| Cable | Type | Typical use |
|---|---|---|
| JZ-500, JZ-500 HMH, JZ-600-Y-CY | Control cables | Wiring of machines and panels; HMH is halogen-free, Y-CY is screened |
| NYY-J, N2XH-J | 0.6/1 kV power cables | Power distribution; N2XH-J for buildings where halogen-free cable is required |
| TOPFLEX-EMV-3-PLUS, TOPFLEX-EMV-UV, TOPFLEX 611-C-PUR | Screened motor cables | Connecting motors to variable speed drives and servo drives with low interference |
| (N)HXH-FE 180/E 90, JE-H(St)H Bd FE 180 | Fire-resistant cables | Safety circuits, fire alarm systems and emergency power that must keep working in a fire |
| PAAR-TRONIC-CY, SUPER-PAAR-TRONIC-C-PUR, OZ-BL-CY | Signal and instrument cables | Measurement signals, drag chains, and blue-sheathed intrinsically safe circuits |
| H07RN-F, H01N2-D | Rubber cables | Mobile equipment, temporary power and arc welding |
The code on a European cable describes its build. In NYY-J, N means a standard type, Y a PVC insulation and sheath, and J a green-yellow earth core. In N2XH, 2X is XLPE insulation and H a halogen-free sheath. A C or CY in the name marks a copper braid screen. FE 180 and E 90 are the fire tests: insulation integrity for 180 minutes and circuit function for 90 minutes as an installed system.
Where HELUKABEL cables are used
In Oman and the GCC, HELUKABEL cables are used in oil and gas and process plants, motor control centres and VFD installations, building fire alarm and life safety systems, machinery and cranes, and water and power infrastructure.
Ordering HELUKABEL cables: what we need
Send the cable type, the number of cores and cross-section (for example 4G2.5 or 3x150+70), the length, and whether you need a specific standard or certificate. For fire-resistant cables, add the required test (FE 180, E 30 or E 90).
Facts checked against HELUKABEL company history, October 2026.
Browse Helukabel products by category: Industrial Cables, Welding Accessories & Safety.
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Frequently Asked Questions
What does H1Z2Z2-K mean?
It is the designation of a single-core, halogen-free, cross-linked PV cable with finely stranded tinned copper conductor, built to DIN EN 50618.
What is the maximum DC voltage?
Nominal voltage is DC 1500 V; the data sheet states the system DC voltage must not exceed 1.8 kV.
Is it suitable for burial?
Yes, direct burial is permitted, but not permanent installation in water.
What colours are available?
Black, red and blue, each with its own part number.
Is it halogen-free?
Yes. The data sheet lists halogen-free to DIN EN 60754-1 and low smoke density.
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