CLC/TC 46X
| Projekta Nr. | LVS EN 50290-2-24:2021 |
|---|---|
| Nosaukums | This Part 2-24 of EN 50290 gives specific requirements for polyethylene sheathing compounds, as given in Table 1, to be used for inner and outer sheathing of communication cables including fibre optic cables. It is to be read in conjunction with EN 50290-2-20, the product standards EN 50407, EN 50117, EN 60794 and other applicable product standards. Using raw material and type test data as outlined in this standard, the raw material supplier will have sufficient data to demonstrate compliance and warrant that the material is suitable for the specified application. There are several routes used for manufacture of Polyethylene and as a consequence a number of different types of polyethylene are defined as given in Table 1. Table 1 - Polyethylene materials (informative) Abbreviation Material type Reactor process Polymer structure Maximum operating temperature1 °C LDPE2 Low density polyethylene High pressure/ temperature radical reaction Long chain branched +70 LLDPE Linear low density polyethylene Low pressure/ temperature catalytic reaction Significant short chain branching +80 MDPE Medium density polyethylene Low pressure/ temperature catalytic reaction Short chain branched +80 HDPE High density polyethylene Low pressure/ temperature catalytic reaction Limited short chain branching +80 Notes 1 Further guidance on operating temperature is contained in EN50290-2-20 2 Upper process capability for density 0,930 g/ml. Normally density range 0,917-0,925 g/ml |
| Reģistrācijas numurs (WIID) | 68421 |
| Darbības sfēra | This Part 2-24 of EN 50290 gives specific requirements for polyethylene sheathing compounds, as given in Table 1, to be used for inner and outer sheathing of communication cables including fibre optic cables. It is to be read in conjunction with EN 50290-2-20, the product standards EN 50407, EN 50117, EN 60794 and other applicable product standards. Using raw material and type test data as outlined in this standard, the raw material supplier will have sufficient data to demonstrate compliance and warrant that the material is suitable for the specified application. There are several routes used for manufacture of Polyethylene and as a consequence a number of different types of polyethylene are defined as given in Table 1. Table 1 - Polyethylene materials (informative) Abbreviation Material type Reactor process Polymer structure Maximum operating temperature1 °C LDPE2 Low density polyethylene High pressure/ temperature radical reaction Long chain branched +70 LLDPE Linear low density polyethylene Low pressure/ temperature catalytic reaction Significant short chain branching +80 MDPE Medium density polyethylene Low pressure/ temperature catalytic reaction Short chain branched +80 HDPE High density polyethylene Low pressure/ temperature catalytic reaction Limited short chain branching +80 Notes 1 Further guidance on operating temperature is contained in EN50290-2-20 2 Upper process capability for density 0,930 g/ml. Normally density range 0,917-0,925 g/ml |
| Statuss | Standarts spēkā |
| ICS grupa | 29.035.20 33.120.10 |