The beddng thickness shall comply with the vetoes specified in tables 4 to 13.

The tolerance for minimum thickness shall be 20% + 0.2mm.

  1. Armour

The armour shall consist of a single layer of wires having nominal dimensions as giver in tables 4 to 13, as appropriate.

For single core cables, the armour sliali consist of aluminium wires.

For muiti-core cables, the armour shal consist of a single layer of galvanised steel wires.The armour shall be applied helically with a left-hand lay for cables having up to and mckxjkvg four cores. For multi core auxiliary cables the armour shall be applied helicalfy with a direction of lay opposite to that of the fine! layer of cures. except that for cable* which have been laid-up with alternating nght-and-left-hand lay the armour may ba applied with either a right-hand or a left-hand lay.

Wire armour shall comply with the following as appropriate:

(al The diameter of round armour wire shall fall within the minimum and maximum wire diameters specified in table 14 when measured rn accordance with sub-clause 2.1.4.3 of HD 605.

(bl The mass of zinc coating of galvanised steel armour wire shell not be less chan that given in table 14 when measured ki accordance with sub-clause 2.5.11 of HD 605.

(c) The steel wn shall be subjected to the wrapping test specified in sub-clause 2.3 2 of HD 605. and shal not break.

(dj The tensJe strength of aluminium armour wires shall not be less than liSN/mm* when measured in accordance with sub-clause 2 3.1.1 of HD 605.

(el The de resistance of the armour of the complete cable measured and corrected to 20е C shall not exceed the appropriate value given in tables 15 to 17 of thia part when measured tn accordance with sub-clause 3.1.2 of HD 605.

Joints In steel armour wire shall be brazed or welded and any surface irregularity shall be removed.

Joints in aluminium wires shall be made by cold pressure or fusion welding and all surface irregularities shall be removed.

Any joint in any wire shall be not less than Im from the nearest joint in any other armour wire in the complete cable.

4.3.6 Oversheath

The over shea th ehaR be an extruded layer of black synthetic material complying with the requirements for type ZM1 given in table 2. and sub-clause 2,4.4.4.

The ovaraheath thickness shall comply with the specified value in tables 4 to 13.

4.4 TjM

Compliance with the requirements of sub-clause 4.3 shall be checked by inspection and by the tests specified in table 3,



TABLE 1

RtqurMWXt fat the ma afaettfaal taeta far 90*C ttubfan

1

2

3


*

8

Ref No

ІМІ

Urwt

T>pa of compound

Toot method described m;

nEPfi

XLPf

1

TamBa strength and aleeeatien at break




H05oe.11

Sub-cfauoe 3,1

11

Properties in the state «s dHvetod





1-11

Vafaee to be obtained for tha tansilo strength: - median, mn

N/mm1

8 5

12 6


1.13

Vattae to Ь« attained for the ofangatwi at troekr

mecfcan, тл

%

200

200


1.2

12.1

Properties afitf agemg in air twert

Agemg condHione:

temporoture

oj ret ion of traalmant

h

13B±3 7x24

13613

7x24

H05D6.1.2

Sub'Cfauoa 8.1.3

1.2.2

Values to be attained lor the taneifa «trongrfa • medan, min ■ venation 11) max

N/mm'

4

30


1.2.3

Values to be attained lor the

longeiton et brook:

meden, min

variation (1) max

% 4

30


IS

ISparal





1.4

Properties attar agoing m the air bomb




HD5O5.12

Suttcloueo 8,2

1.4,1

Ageing condrttone:

- temperature

- daation erf treatment

c h

127 x 1 40

A


14.2

VaAio to be attained for Iha tensile strength;

- median, mm

variottoft 11) max

N/mm*

4

SO

f


1.4.8

Vakiee to ba attained for the elongation el brook;

- nteden, mm

variaboH (1) max

4

%

30




IIJ Vitiation: Difference b*tw**n the median velue after ageing and the median value without ageing, expressed as a percentage of the fatter.TABLE 1 (concluded)

1

2

1

4

6

6

Ftel No

T«ct

Unit

Type of DOrnpound

Tort method daecribod In?

HEPR

XLPC

2

Hoc Ml 1*t1




HO5O6 2.1

СІоіле Э

2.1

Condition* of traetment'






teonpoflluie

c

2Б0±3

2OO±2



time under bod

ГПІП

16

1b



mechanic el of rocs

Worn*

20

20


2 2

Tom requirements:






fMx, Mongatton under bod

%

100

17Б



max etonaetton efier unkradng

%

2B

16


1

ComoePbUIrv toot




HD606 aut^clauoe 2Л 12.2

3.1

Agoing condrtkxw






temperature

c

too ±2

10012



' dtMehon of treatment

h

7x24

7x24


3.2

МмЬенгсЫ РгереНйе «her <KMng






- twwH aUonglh


*




- оіолдмкмі or brook


*


4

Отого tOQMttnco tost




HO6O6 2.1

Qeuee •


Toot гопгЗДопв:






toot tempvoTure

C

26*2




- toot dureiion

h

30

а



- отеле concentration

ppm

2Ы73ОО

r


Б

Shrinkono




НОСОВ. 1,2

Cleueo 10

6.1

Toot eoodihom:






temperature

c

*

130*3



- time

h

1


6.2

Roeuh to be ohtMMd






ehroiksga, mor

%

-

4


6

Hord new




HD 606 Sutxbueo


Minimum

[RHO

flO

-

2.2.6

7

WtttM ibtorplion




HO 606.1 Л

Sub-duo 9.2

Toot cooditiorwr - temperature

*C

M±2

6612



lime

h

14x24

14x24


7.2

Rosufte to be obtained






тем variation in moas

fnfl/cm’

ft

1




See Table 21


TABLE 2

Requirements for tilt non-electrical tests tor non-halogenated bedding and over shea th

1

2

3

*

Б

8

Ref


UnH

Typo of compound

Teel method

No

ТвШ

TB2

ZM1

1

Twite etrenoih 8 Ыопдагіоп al break




HO606.1.1

ri

Prcpertiaa in the aieia at daOvared




&ub-dauae >_2

МЛ

Vehjoa lo be obtained tor the tentite strength:

median, mm

Nfrnm1

4

10


1.1.2

Vetoei Io be obtained for etangMten «г twaet:

- modem, min

4

60

IOC


1.2

Ргорепім after ignng in air oven


N/A



1ЛЛ

Ag*og eonddione:

  • median, nun

  • duration of trial merit

c h


100*2 7x24

Н>Б05.1.2

Sub dauM 8.1.3

12 2

Value to be obtained tor the teotite atrengitv ' median, min - variMaxt ", max

Mfmm* 4


10 ±40


1,2.3

Veto to be obtanod for the alongatkon at brook: - ma^an, min - variation *, max

% %


100 ±40


3

ISporol





a

tSparof





a

(Sperni





6

6.1

Preotera test at hi^.Tomp

Tan condhhxe: ■ force averted bv blade

- duratten of heeling under load

temperature

c

N/A

M H0S05.3.1 sufa'Cteuee 8.2.4 >M HDW63.1 eub^cteuao 8.2.S 8012

HD60B.3.1

Sub-elauaa S.2

62

Raauft to be obtained madten of the depth of рапвііаіюп. maximum

%


БО