Heavy duty cables – H07RN8-F

5  Water resistant cables
5.1   Heavy duty cables – H07RN8-F
5.1.1  Construction

5.1.1.1  Conductor
The conductor shall be class 5, according to EN 60228.

Where an optional separator is applied around each conductor it shall be non-hygroscopic.
5.1.1.2  Sizes of cable

The sizes of cable shall be:

-      Single core – 1,5 mm2 to 630 mm2;

-      2 and 5 core – 1,0 mm2 to 25 mm2;
-      3 and 4 core – 1,0 mm2 to 300 mm2.
5.1.1.3  Insulation

The  insulation  shall  be  a  cross-linked  elastomeric  compound,  Type  EI 4  to  EN  50363-1
applied around each conductor.

NOTE  It is permitted to apply a tape on each core.


Where the insulation is covered with a tape, it shall be non-hygroscopic and shall be applied in
such a manner that it can be removed without damage to the insulation.

5.1.1.4  Assembly

The cores of cables having two to five cores shall be twisted together.

NOTE 1  A centre filler may be used.


NOTE 2    A  non-hygroscopic  tape  may  be  applied   around  the  core  assembly  before
application of the sheath.
5.1.1.5  Sheath

The cores shall be covered with a sheath.
a)   For cables with a specified sheath thickness up to and including 2,4 mm:
1) sheath in  a  single  layer,  cross-linked  elastomeric  compound  of  type EM 2  to EN
50363-2-1.
b)   For cables with a specified sheath thickness greater than 2,4 mm:

1) sheath either in a single layer, cross-linked elastomeric compound of type EM 2 to EN 50363-2-1;
2) or in two layers, with the inner layer made of one of the cross-linked elastomeric compounds
type EM 2 or EM 3 to EN 50363-2-1 and the outer layer of the cross- linked compound type EM 2 to EN
50363-2-1.

The sheath applied in a single layer or the inner layer of the sheath in two layers shall, for
cables with two to five cores, fill the spaces between the cores. Where a non-hygroscopic tape of
suitable material is applied around the core assembly (see NOTE 2 to 5.1.1.4) this requirement
shall not apply, provided that the finished cables shall not have any substantial cavity in the
outer interstices between the cores.
5.1.1.6  Marking
The cable shall be marked with the CENELEC code H07RN8-F. The marking shall comply with Clause 6 of
EN 50525-1.

5.1.2  Requirements

Each cable shall comply with the appropriate requirements given in EN 50525-1, and the particular
requirements of this Part.
Testing shall be in accordance with Table A.1, column 10.

NOTE  For non-electrical tests on sheaths in two layers see EN 50525-1, 5.6.2.3, c).

The dimensions of the cables shall conform to Table B.2 for the relevant size.
The requirements to be met for the compatibility test shall be as given in Table C.1.
The requirements to be met for the water resistance tests shall be as given in Annexes D
and E.
5.2  Heavy duty multicore cables – H07RN8-F
5.2.1  Construction

5.2.1.1  Conductor
The conductor shall be class 5, according to EN 60228.

W here an optional separator is applied around each conductor it shall be non-hygroscopic.
5.2.1.2  Sizes of cable

The sizes of cable shall be:

-      6, 7, 12, 18, 24 and 36 core – 1,5 mm2 and 2,5 mm2;

-      6, 7, 12 and 18 core – 4 mm2.
NOTE The number of cores given here is preferred. Other numbers of cores are permitted up to the
maximum number stated in the table for the given size of conductor, subject to agreement between
the purchaser and manufacturer. See also footnote c to Table B.3.

5.2.1.3  Insulation

The insulation shall be a cross-linked elastomeric compound, Type EI 4 to  EN  50363-1, applied
around each conductor.

The identification of each core shall be in accordance with Annex D of EN 50525-1.

5.2.1.4  Assembly

The cores shall be twisted together. A single core in the centre is not permitted. A protective
conductor, if any, shall be applied in the outer layer. A centre filler shall be used for cables
having 6, 7, 18, and 36 cores, and also for 19 cores when this non-preferred size is used.

NOTE 1  A centre filler may be used for other sizes.


The centre filler shall consist of a non-hygroscopic material.
NOTE 2  A non-hygroscopic tape may be applied around the core assembly before application of the
sheath.

5.2.1.5  Sheath
The core assembly shall be covered with a sheath. The sheath shall be applied either in a single
layer, cross-linked elastomeric compound EM 2 to EN 50363-2-1, or in two layers, with the inner
layer made of one of the cross-linked elastomeric compounds EM 2 or EM 3 to EN 50363-2-1  and  the 
outer   layer   of   cross-linked   elastomeric   compound   EM 2   to EN 50363-2-1.

The sheath in a single layer or the inner layer of the sheath in two layers shall fill the spaces
between the cores. W here a non-hygroscopic tape of suitable material is applied around the core
assembly (see NOTE 2 to 5.2.1.4) this requirement shall not apply, provided that the finished
cables  shall  not have  any substantial cavity in the outer interstices between the cores.
5.2.1.6  Marking
The cable shall be marked with the CENELEC code H07RN8-F. The marking shall comply with Clause 6 of
EN 50525-1.

5.2.2  Requirements

Each cable shall comply with the appropriate requirements given in EN 50525-1, and the particular
requirements of this Part.

Testing shall be in accordance with Table A.1, column 11.

NOTE  For non-electrical tests on sheaths in two layers see EN 50525-1, 5.7.2.3, c).

The dimensions of the cables shall conform to Table B.3 for the relevant size.

The requirements to be met for the compatibility test shall be as given in Table C.1.


The requirements to be met for the water resistance tests shall be as given in Annexes D
and E.


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Ünika Cable


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H07RN8-F

H07RN8-F is a harmonized and heavy duty rubberised submersible pump cable.

This black neoprene jacketed, rubber insulated, flexible multi-conductor is designed specifically for application in submersible applications such as submersible pumps, and under very high mechanical stresses.

The H07RN8-F comes with a recommended immersion depth of 10 meters and a maximum water temp of 40°C. It is regularly utilized for connecting electrical components in industrial water and also to connect floater switches and other flexible applications that are typically found in swimming pools.

The specialised external rubber jacket of H07RN8-F is o-zone, ultra-violet and oil resistant. It is transversently waterproof and should be applied temporarily in water at a maximum of only 2 weeks at a time. The underwater usage of this rubber cable is strictly prohibited in areas of water where there is a strong risk of danger, such as regular moving water in avenues of shipping traffic.

Application range

·    For connecting electrical equipment in industrial water, e.g. floater switches
·    Flexible applications in indoor and outdoor swimming pools
·    For use with submersible pumps
·    Dry or damp rooms, as well as outdoors and in industrial water

Benefits

·    Temporary use in water: a maximum of 2 weeks at a time (transversely waterproof), subsequent drying-out required
·    Immersion depth of 10 m
·    According to HD 516/VDE 0298-300, underwater use prohibited in areas with shipping traffic, moving water or where there is a risk of dangerous, mechanical damage
·    High stresses
·    Type-compliant versions <HAR>-certified with "<HAR>" testing and certification mark for accelerated granting of approvals if final application of cable is within the European CENELEC area

Design

·    Strands of bare copper wires
·    Core insulation: rubber compound type EI 4
·    Outer sheath: rubber compound, type EM2

Product features

·    Flame-retardant according to IEC 60332-1-2
·    Oil-resistant according to EN 60811-2-1

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