Helukabel SOLARFLEX-X H1Z2Z2-K UV 1×10mm² red – 500m PV cable (1500V DC)

The Helukabel SOLARFLEX-X H1Z2Z2-K UV 1×10mm² red is a heavy-duty PV cable for the DC cabling of solar panels. This is the cable you grab when you don’t fancy voltage drop presents: long distances, higher string currents, larger projects or just “I want to do it right the first time”. This version comes on a 500-metre reel – ideal for installers and larger PV installations.

The red jacket is almost always used in PV installations as the positive (+) DC cable, in combination with a black cable for the minus (-). This makes your installation clearer and reduces the risk of incorrect connection when servicing or expanding.

What do you use 10mm² PV cable for?

• Long DC routes between solar panels/string box and inverter.
• Field arrangements and commercial roofs where cables travel longer routes.
• Pathways with higher currents or where you deliberately want to reduce voltage drop.
• Installations with 1500V DC strings (where allowed and appropriate to inverter design).

Key benefits

• 1500V DC suitable – designed for modern PV systems (H1Z2Z2-K / EN 50618).
• 10mm² tinned copper (class 5) – low resistance, smooth to handle and extra corrosion resistant.
• UV, ozone and weather resistant – suitable for long-term outdoor use on roof and facade.
• Halogen-free & flame-retardant – less smoke and no corrosive gases in case of fire.
• Suitable for direct burial – preferably in pipe/sand bed for extra protection.
• 500m reel – fewer couplings, faster work, neat continuous lengths.

Technical specifications (1×10mm²)

• Cable type: SOLARFLEX-X H1Z2-K UV
• Conductor: tinned copper, fine-stranded (class 5)
• Cross section: 1×10mm²
• Colour: red
• Rated voltage: 1000/1000V AC and 1500/1500V DC
• Test voltage: 6,500V
• Temperature range (fixed): -40°C to +90°C
• Permissible conductor operating temperature: up to +120°C
• Min. bending radius (fixed): 5× outer diameter
• Outside diameter: approx. 6.9 – 7.7 mm
• Delivery: reel 500 metres

Installation tips (practical and important)

• 1. Use red for plus, black for minus
  Keep it logical: red = +, black = –. In addition, always label your strings and cable routes, especially with string boxes and long routes.
• 2. Pay attention to voltage drop
  10mm² is usually chosen to limit voltage drop. Do you want us to do the math? Send the number of panels per string, inverter type and cable lengths.
• 3. No sharp kinks
  Observe at least the bend radius (5× outer diameter). Especially with feed-throughs and cable glands: a wide bend is preferable to a sharp kink.
• 4. Ground cable? Do it neatly
  Direct burial is possible, but we recommend: in a casing with a sand bed and warning tape. This prevents damage when digging and extends the service life.
• 5. Use good connectors
  Choose good quality MC4-compatible connectors and use the right crimping tools for 10 mm². Poor crimping = heat = misery.
• 6. Don’t forget DC protection
  Consider correct DC switch/fuses/SPDs according to design and inverter manual. Cable is one part of a safe DC chain.

Buy Helukabel 500m red 10mm² from Radiant Green

With the Helukabel SOLARFLEX-X 10mm² red 500m you get a real installer’s cable: heavy, flexible, weatherproof and suitable for modern PV systems up to 1500V DC. Perfect as a plus cable in long DC routes where you want maximum reliability.