Table 1В Requirements and tests for the sheathing compounds

1

2

3

4

5

6


Designation of compound


MHN 1

MHN 2

Test according


Max. rated conductor temperature

°С

90

90

to


Mechanical properties





1

1.1

Before ageing

Tensile strength, min.

N/mm!

7.0

7.0

EN 60811-1-1

Sub-clause 9.2

1.2

Elongation at break, min.

%

125

125


2

2.1

Ageing in air oven - temperature - tolerance, max. - duration

°С К d

100 ±2

7

100 ±2 7

EN 60811-1-2

Sub-clause 8.1

3

3.1

After ageing Tensile strength: - value, min.

- variation, max.

N/mm2 %

7.0

-30

7.0

-30

EN 60811-1-1

Sub-clause 9.2

3.2

Elongation at break: - value, min. - variation, max.

% %

100

±40

100 + 40



Thermal characteristics





4

4.1

Hot set test

  • temperature

  • tolerance

  • time under load

  • mechanical stress

°С К min N/mm2

200 ±3

15

0.20

-

EN 60811-2-1 Clause 9

4.2

Max. elongation under load

%

175



4.3

Max. permanent elongation after cooling

%

25

-


5

5.1

Pressure test at high temperature

  • temperature

  • tolerance

  • duration

°С К h

"" ■

90

+ 2

4

EN 60811-3-1

Sub-clause 8.2

5.2

Max. value of indentation

%

-

50




Table 1В

Requirements and tests for the sheathing compounds (concluded)

1

2

3

4

5

6


Designation of compound


MHN 1

MHN 2

Test according


Max. rated conductor temperature

°С

90

90

to

6

6.1

Behaviour at low temperature

Cold bending test1’*

- temperature - tolerance

°С к

-15

±2

-15 ±2

EN 60811-1-4

Sub-clause 8.2

6.2

Cold elongation test'11 - temperature - tolerance

- elongation (min.)

°С к %

-15 ±2

20

-15

±2

20

EN 60811-1-4

Sub-clause 8.4

6.3

Cold impact test111 - temperature - tolerance

°С к

-15 ±2

-15

+ 2

EN 60811-1-4

Sub-clause 8.5

7

Corrosivity of combustion gases - temperature - test duration - pH value (min.) - conductivity (max.)

°С h

/jSmm1

935 0.5 4.3

10

935 0.5 4.3

10

HD 602

The test only has to be carried out if it is required in the relevant regulations



Table 2

Schedule of tests

1

2

3

4

5


Tests

Type of test

Requirements

Test methods according to

1

Electrical tests




1.1

1.2

Conductor resistance

Resistance of concentric conductor screen

R, T

R, T

3.3.1 and HD 383

3.3.1 and HD 383

HD 605 Sub­clause 3.1.1

HD 605 Sub­clause 3.1.4

1.3

Dielectric strength of the complete cable

Test voltage 3.5kV

Test duration 5 min

R, T

No breakdown

HD 605 Sub­clause 3.2.1

1.4

Volume resistivity

Test duration 1 h

Temperature of water bath (20 ± 2) °С

(90 ±2) °С

T

Table 1A

>10’2 Q.cm

>109 Q.cm

HD 605 Sub­clause 3.3.1


Test voltage 80-500Vd.c.




1.5

Surface resistance of the sheath

T

>109 Q.cm

HD 605 Sub­clause 3.4

2

Test of cable design and dimensions




2.1

Test of accordance with the design definition

T, S


visual inspection

2.2

Thickness of insulation, minimum value

T, s

Table 4

EN 60811-1-1 Sub-clause 8.1

2.3

Thickness of sheath, minimum value

T, S

3.3.6

EN 60811-1-1

Sub-clause 8.2

3

Mechanical properties of crosslinked insulation compounds




3.1

Tensile strength and elongation at break before and after ageing

T

Table 1A

EN 60811-1-1 Sub-clause 9.1 and EN 60811-1-2 Sub-clause 8.1

3.2

Ageing in air oven

T


EN 60811-1-2

Sub-clause 8.1

3.3

Hot set test

T


EN 60811-2-1 Clause 9



Table 2

Schedule of tests (continued)

1

2

3

4

5


Tests

Type of

Requirements

Test methods



test


according to

4

Mechanical properties of thermoplastic insulation compounds




4.1

Tensile strength and elongation at

T

Table 1A

EN 60811-1-1


break before and after ageing



Sub-clause 9.1 and EN 60811-1-2 Sub-clause 8.1

4.2

Ageing in air oven

T


EN 60811-1-2 Sub-clause 8.1

4.3

Shrinkage test

T


EN 60811-1-3

Clause 10

4.4

Pressure test at high temperature

T


EN 60811-3-1

Sub-clause 8.1

5

Mechanical properties of crosslinked

T


EN 60811-1-1


sheath compounds



Sub-clause 9.2

5.1

Tensile strength and elongation at


Table 1В

and EN 60811-1-2


break before and after ageing



Sub-clause 8.1

5.2

Ageing in air oven

T


EN 60811-1-2

Sub-clause 8.1

5.3

Hot set test

T


EN 60811-2-1 Clause 9

6

Mechanical properties of thermoplastic sheath compounds




6.1

Tensile strength and elongation at

T

Table 1В

EN 60811-1-1


break before and after ageing



Sub-clause 9.2 and EN 60811-1-2 Sub-clause 8.1

6.2

Ageing in air oven

T


EN 60811-1-2

Sub-clause 8.1

6.3

Hot pressure test

T


EN 60811-3-1

Sub-clause 8.2

7

Compatibility test

T


EN 60811-1-2 Sub-clause 8.1.4

7.1

Ageing in the air oven (piece of complete cable)

- temperature °С


100



- tolerance К


±2



- duration d


7


7.2

Result to be obtained


Tables 1A and 1 B, Clause 3




Table 2

Schedule of tests (concluded)

1

2

3

4

5


Tests

Type of test

Requirements

Test methods according to

8

8.1

Low temperataure tests

Cold bend test

cores up to and including 12.5mm diameter

complete cables up to and including 12.5 mm diameter

T

no cracks

EN 60811-1-4 Sub-clause 8.1 and 8.2

8.2

Cold elongation test insulation of cores above 12.5mm diameter sheath of cables above 12.5mm diameter

T

Tables 1A and IB, Clause 6

EN 60811-1-4 Sub-clause 8.3 and 8.4

8.3

Cold impact test

T

no cracks

EN 60811-1-4

Sub-clause 8.5

9

9.1

Flame propagation test

Preparation of test

a) Cables with an outer diameter of < 25mm have to be mounted without spacing, cables with outer diameter > 25mm have to be mounted with a spacing of at least 0.5d but not more than 20mm.



HD 405.3


b) The number of samples has to be chosen in such a way that at least 180mm of the ladder width is covered.





c) The distance of the test samples to the upright rungs of the standard ladder should be between 90 and 120mm.





d) Mixture of propane and compressed air (890±60)l/h propane (4500+100) l/h of compressed air




9.2

Result to be obtained


Flames shall be self extinguishing max. extent of charrring may not reach the upper end of the samples


10

Corrosivity of combustion gases

T

Table 1A and IB

HD 602

11

Cable marking

T

2.2

visual inspection

Table 3 Assignment of reduced conductors to phase conductors

a

Nominal cross-sectional area of phase conductors mm2

Nominal cross-sectional area of reduced conductors mm2

25

16

35

16

50

25

70

35

95

50

120

70

150

70

185

95

240

120

300

150

400

185

500

240



    Insulation wall thickness

    Nominal cross-sectional area of conductor mm2 ,

    Insulation thickness specified value mm

    1.5

    1.0

    2.5

    1.0

    4

    1.0

    6

    1.0

    10

    1.0

    16

    1.0

    25

    1.2

    35

    1.2

    50

    1.4

    70

    1.4

    95

    1.6

    120

    1.8

    150

    1.8

    185

    2.0

    240

    2.2

    300

    2.4

    400

    2.6

    500

    2.8