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What is h07rn-f EPR insulation? h07rn-f specification & h07rn-f cable weight

Source:VGCABLE Time:2020-03-12 15:52:22Click:200

vgcable What is h07rn-f EPR insulation? h07rn-f specification & h07rn-f cable weight
H07rn-f EPR used as a sheathing material exhibiting excellent ozone and weathering resistance, Let VGCABLE introduce What is h07rn-f EPR insulation? h07rn-f specification & h07rn-f cable weight.

1.h07rn-f specification

Applicable standard: IEC 60245-4 / GB/T 5013.4
Flame retardance: IEC 60332-1 / GB/T 18380.1
Conductor: Plain or tinned annealed copper, IEC 60228 / GB/T 3956 Class 5
Insulation: Ethylene-propylene rubber (EPR) compound, type IE4
Sheath: Rubber compound, type SE3, Polychloroprene (PCP) compound, type SE4
Core identification: single core: black
2 core: Blue & brown
3 core: Blue, brown & green/yellow
4 core: Black, brown, grey & green/yellow
5 core: Black, blue, brown, grey & green/yellow
7 cores and above are numbered
Sheath/Jacket: PCP (Polychloroprene) more commonly referred to as OFR
(Oil resistant & flame retardant)
Colour: Black
Voltage: 450/750v
Operating temperature: Maximum 60°C,
Minimum bending -30°C
Minimum bending radius: 6 x overall diameter for cables not exceeding 25mm O/D
8 x overall diameter for cables exceeding 25mm O/D
Standards: BS6500: electrical cables for use with appliances and equipment intended for domestic, office and similar environments
BS7919: Electric cables. Flexible cables rated up to 450/750V for use with appliances and equipment intended for industrial and similar environments
Class 5
CPR Fire Class ECA

2.What is h07rn-f EPR insulation?

h07rn-f Insulation: EPR (Ethylene propylene rubber)
Ethylene Propylene Rubber is a generic term for a wide range of polymers based on copolymers of ethylene and propylene. It is one of a number of rubber insulation materials. The EPR polymers can be tailored for different applications.  EPR is widely used as an insulation material for electric cables due to its high dielectric strength but it is also used as a sheathing material exhibiting excellent ozone and weathering resistance. EPR has a wide thermal range typically in the region of -55°C to 150°C. Unlike other organic rubbers, the copper conductor does not need to be tinned to prevent deterioration of the rubber.  EPR rubber is noticeably softer than Natural rubbers and Styrene-Butadiene rubbers so can be used as a replacement material in many applications. Where greater hardness is required, the EPR compound can be blended with polyethylene (PE) or polypropylene (PP) to achieve improved physical properties. Mechanical properties include resistance to compression, cutting, impact, tearing and abrasion.  Although EPR does not offer a good resistance to oils, it is resistant to a wide range of other chemicals including many acids, alkalis and organic solvents. It is also highly resistant to moisture.  Like XLPE insulation, EPR insulation is suitable for many higher voltage applications and whilst its dielectric properties are not as good as those of XLPE it does have some important advantages over XLPE including extra flexibility, reduced thermal expansion, and low sensitivity to water treeing.

3.h07rn-f cable weight

H07RN-F Cable Data Sheet
Ho7 cable data sheet, h07rn-f cable weight

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