Photovoltaic LSZH Cable Compound

The EPC9256-III and EPC9255-III series is a matched irradiation-crosslinked low-smoke zero-halogen polyolefin material system developed for photovoltaic cable insulation and outer sheathing. EPC9256-III serves as the conductor insulation grade, while EPC9255-III serves as the outer protective sheath / jacket grade.

The two grades are designed around different cable-layer functions rather than as interchangeable materials. EPC9256-III emphasizes electrical insulation and high volume resistivity; EPC9255-III emphasizes UV, weather, chemical and external mechanical protection. Used together in an appropriate cable construction, the pair can support photovoltaic cables designed around IEC 62930, EN 50618 and TÜV 2PfG 1169 requirements.

• Matched insulation + sheath material system for photovoltaic cable constructions
• Cross-linked halogen-free polyolefin / XLPO route with electron-beam irradiation
• Referenced finished-cable routes: IEC 62930, EN 50618 and TÜV 2PfG 1169
• Both grades pass -40°C low-temperature impact in the supplied technical data
• UV, ozone and salt-spray performance data for demanding outdoor solar environments
• Typical halogen content: 0 ppm for both grades
• Recommended electron-beam irradiation dose: 10–12 MRad

• Photovoltaic DC cables
• Solar module and array interconnection cables
• Rooftop PV systems
• Utility-scale solar farm cables
• Outdoor solar power wiring
• Cross-linked LSZH / HFFR photovoltaic cable constructions

EPC9256-III and EPC9255-III belong to the same photovoltaic cable platform, but the cable layer determines the correct grade. The insulation grade prioritizes electrical performance, while the sheath grade is selected for the outer environmental and protective role. They should not be treated as substitutes for one another.

• One product family covers both critical polymer layers of a typical PV cable construction.
• Insulation and sheath functions remain technically differentiated instead of forcing one compound to do both jobs.
• Common irradiation and processing logic simplifies trial planning for cable manufacturers.
• A matched system makes RFQ, sample testing and finished-cable validation more straightforward.

Note: Values are typical material data from the supplied product documents. A dash means the corresponding item is not listed in the available grade data. Final finished-cable performance must be verified on the actual PV cable construction.

• Both grades can be processed on conventional PVC/PE cable extrusion equipment.
• Electron-beam irradiation is applied after extrusion; recommended starting dose: 10–12 MRad.
• Keep melt temperature at or below approximately 165°C and do not exceed 175°C.
• A low-compression screw and head, approximately 1:1–1:2 compression ratio, are recommended as a starting point.
• For EPC9256-III, optimize conductor size, insulation thickness, line speed and irradiation conditions.
• For EPC9255-III, optimize die design, cooling, line speed, sheath thickness and irradiation conditions.
• Final PV cable electrical, mechanical, flame and environmental performance must be validated on the complete insulation/sheath construction.

The supplied product information positions EPC9256-III and EPC9255-III as a complementary insulation/sheath system for photovoltaic cable constructions designed around TÜV 2PfG 1169-2007, IEC 62930 and EN 50618 requirements.

Important Compliance Note

These standards apply to finished photovoltaic cable constructions. Raw compound selection alone does not guarantee finished-cable certification. Conductor design, insulation and sheath thickness, extrusion quality, irradiation conditions and the complete cable construction must be validated under the applicable standard and certification program.

For faster PV material selection and RFQ evaluation, please provide:

• Target PV cable standard: IEC 62930, EN 50618, TÜV 2PfG 1169 or other
• Required layer: insulation (EPC9256-III), sheath/jacket (EPC9255-III), or both
• Conductor size and complete cable construction
• Insulation thickness, sheath thickness and finished cable diameter
• Target operating temperature and installation environment
• UV / ozone / acid-alkali / salt-spray requirements
• Required flame, smoke and halogen performance
• Extrusion line and electron-beam irradiation equipment
• Required insulation / sheath color
• Trial quantity and estimated annual volume