Visico ME4425 / Ambicat LE4476 is a silane crosslinkable natural compound system designed for insulation of  low voltage energy cables. 

Visico ME4425 is a medium density polyethylene, copolymerized with vinyl silane. Ambicat LE4476 is an ambient  crosslinking catalyst masterbatch specially designed to be used with Visico base resins. The system is highly active  and crosslinks quickly at ambient conditions, in sauna or in hot water. 

Cable insulation with a proper mixture of Visico ME4425 (95 parts) and Ambicat LE4476 (5 parts) exhibits excellent thermo-oxidative stability. The combination is suitable for both copper and aluminium conductors.  If the insulation is designed to meet the thermo-oxidative ageing demand required by IEC 60502 at 150°C in  contact with copper, the addition of 9 parts Ambicat LE4476 to Visico ME4425 is recommended. 

Applications 

Visico ME4425 / Ambicat LE4476 is designed for: Insulation of low voltage energy cables, range up to 6 kV  

Specifications 

Visico ME4425 / Ambicat LE4476 in combination meets the applicable requirements as below when processed  using sound extrusion and testing procedure: ASTM D 1248 Type II, Class A, Category 4 HD 603 S1 HD 604 S1 IEC 60502-1 NEMA WC 70/ ICEA S-100-685 NEMA WC 71/ ICEA S-96-659 EN 50290-2-29 

The standards referred to above is a selection and is not complete coverage of all applicable standards. Contact  your Borealis representative for additional information. 

Special Features 

Visico ME4425 / Ambicat LE4476 insulation system offers: Excellent processing properties Low scorch allowing long runs and more frequent tooling  changes Environmentally friendly (free from heavy metals) Less smell, more consistent quality (no volatiles)  Outstanding curing speed  No drying prior to extrusion  Excellent surface finish  Excellent storage stability