Concentric conductor
Th* concentric conductor, if any, shall consist of copper wires with one or two copper tapes.
Th* concentric conductor shall be applied:
over the separating layer of single-core cables respectively;
over the inner covering of muhhcore cables.
The calculated mean specs between adjacent wees shall not exceed 4.0mm wd th* maximum space between adjacent wires shall be not more than 8.0mm.
A halogen-free separating layer may be applied over the concentric conductor. The d.c. resistance of the concentric conductor shall comply with the relevant value given in HD 383.
Extruded inner sheath
The extruded inner sheath shall be only applied In armoured cables.Psge б-Н-4
HD $1:1994
Pvt 6 Section H
The extruded inner sheath shall be • halopen-free thermoelastic (HMT1 or HMT2) or halogen- free cross-linked (HMC) compound end shell comply with the requirements and tests specified in Table 1B. The colour й not specified.
The minimum wall thickness of the extruded inner sheath shall not be leu than the value specified for the insulation wal thickness of the enclosed phase conductors.
Metallic armour
The armour, if any, is composed either of two lead covered steal tapes or copper tapes, helically applied In the same direction, or of one layer of flat wires, made of galvanised steel or aluminium alloy.
The thickness of the steel tapes shall be 0.15 mm minimum and the thickness of the copper tapes shal be not less than OJO mm. The Hat wires shall be minimum 1 -2 mm thick-
Outer sheath
The outer sheath shall be a hak>gen-froe thermoplastic IHMT1 or HMT2I or halogen-free cross- linked (HMC) compound and shall comply with the requirement* end tests specified in Table 1B. The colour is not specified.
The sheath waN thickness shall comply with the minimum value specified kt Table в; the mean value is not specified.
4- Tests
Compiance with the requirements of clause 3 she* be checked by inspection and by the tests specified tn Tables 1 to 6.
Table 1A - Requirement* end mt* for the insulating compound*
|
1 |
2 |
* |
4 |
3 |
в |
7 |
|
w, |
Designation of compound |
|
me |
HIT1 |
H72 |
Toot method |
|
Ho. |
Мам. rated conductor temperature |
•c |
*0 |
*0 |
70 |
|
|
|
Mechanical charset artet tee |
|
|
|
|
|
|
1 |
Before амфці |
|
|
|
|
|
|
1Л 1.2 |
Tanai* atrengih, min. Bongahon at brook, min. |
N/mm’ 4 |
3-і 12Б |
e.3 123 |
4,6 123 |
HD 303.1.1 Sub-douce S 1 |
|
1 |
Amino И oven |
|
|
|
|
|
|
|
Treatment . temperature fdorance £ . duration |
•c h |
IM 2 7x24 |
110 2 7x24 |
■O 2 7x24 |
HD 303.1.2 Sub-do use • 1 |
|
* |
Alter одето |
|
|
|
|
|
|
3.1 3,3 |
Tennis eirsnglh: veue to be obtained, mln, - venation, max. Etongetkrn el break. > veUa to be obtained, min. variation, max. |
2 ta |
В.Б 30 100 ±30 |
Є.5 -30 100 ±40 |
S.B -30 100 ±40 |
HD 303.1.1 Sub-clau*e S1 |
|
|
Thermal cfwcteriebce |
|
|
|
|
|
|
4 4.1 |
Німині Treatment : tenwwoturv : tolerance a : tone under toed : пмсКммсоі etrec* |
‘C •c min №cm‘ |
200 3 13 20 |
N.H. |
N.H. |
HD 303.2.1 Qleue* 9 |
|
4Л |
Мел. obligation imdor load |
4 |
1?3 |
|
|
|
|
4.3 |
Max. permanent dongoikxi after cooing |
4 |
23 |
|
|
|
|
* |
Hat proem г a test |
|
N.A |
|
|
HD 303.3.1 fiub-doueo 3.1 |
|
ел |
- temperature • toteronce ± - duration |
•c ■c h |
|
SC 2 4/fl |
70 2 4/3 |
|
|
3,2 |
Max. value 0* indentation |
* |
|
30 |
30 |
|
|
4 |
Vobrne roMaLivttv |
|
|
|
|
|
|
6.1 |
- temperature ' (otarenco ± |
•c •c |
90 2 |
BO 2 |
?0 2 |
|
|
6 2 |
VaUe to bo obtained, mln |
fi.om |
1O*D |
10і* |
10м |
HD 303 Sub-deuea 3,3.1 |
TibU IB - Requirements end tests to the sheathing compounds
|
1 |
2 |
3 |
4 |
6 |
6 |
7 |
|
Ref |
DeetgnMian ol compound |
|
HMC |
HMT1 |
HMT2 |
Toot method |
|
No |
Маж. rated conductor temperature |
•c |
90 |
90 |
70 |
|
|
|
||||||
|
|
Mechanical chotecta^ettes |
|
|
|
|
|
|
1 |
Mfora gflpJng |
|
|
|
|
|
|
1Л |
Toneda strength, min. |
M/mm' |
OS |
6.6 |
6.B |
HD 606.1.1 SutrCleueo |
|
1.2 |
Elongation al faraoL min. |
% |
12B |
126 |
126 |
S.2 |
|
2 |
Aneina h air cyan |
|
|
|
|
|
|
|
Treatment : temperature |
•c |
136 |
100 |
60 |
HO 606.14 |
|
|
: lotaronco ± |
•c |
2 |
2 |
2 |
6ut>-Oeu«o |
|
|
; duration |
h |
7m24 |
7x24 |
7x24 |
S.1 |
|
3 |
After atwina |
|
|
|
|
|
|
3,1 |
Tensile strength: ‘ vdue to bo obtained, mm. |
Wmm1 |
e.s |
6.6 |
6 6 |
HD 606.1.1 |
|
|
иогімюгк max. |
% |
- 30 |
• 30 |
• 30 |
SubCtouee |
|
|
|
|
|
|
|
32 |
|
a.2 |
Elongation at break: |
|
|
|
|
|
|
|
volua to bo obtained, man. |
% |
100 |
too |
100 |
|
|
|
- vorietion, max. |
% |
S 30 |
* 40 |
1 40 |
|
|
4 |
Thermal cheracteriaiks |
|
|
|
|
|
|
4.1 |
Hot irt teat |
|
|
N.R. |
N.R, |
HD 606,2.1 |
|
|
|
|
|
|
|
Oeuee 6 |
|
|
Treatment : temperature |
•c |
200 |
|
|
|
|
|
: tolerance ± |
*C |
3 |
|
|
|
|
|
: tkna under toed |
min |
IB |
|
|
|
|
|
: mechanical etreee |
H/om* |
20 |
|
|
|
|
4 2 |
Мая. atongotion under toed |
% |
176 |
|
|
|
|
4.3 |
Max. permanent аіспдмюп oh or cooling |
% |
2Б |
|
|
|
|
5 |
Hot огеиьге top] |
|
МЛ. |
|
|
HD 606.3.1 Sub Oeuae |
|
Bl |
- temperature |
•c |
|
SO |
70 |
3.2 |
|
|
totarence ± |
•C |
|
2 |
2 |
|
|
|
- duration |
h |
|
4/6 |
4/6 |
|
|
6.2 |
Mew, value of indentation |
|
|
BO |
BO |
|
Teble 2A * Routine ttm
|
1 |
2 |
3 |
4 |
|
Roi, Ho |
Property «nd tMt QQOdittQfW |
Roquromonto •OCOrdtoQ to |
Toot method •Hording to |
|
1 |
CoMudiar гаеміапм - Затрй (aj MenuUcturag ІыфК (Ы Short мтрів of menufecturlng length |
Sub Моим ЭЛ/І •nd HD 383 |
но eat 8иЬ-с1оим 3.1.1 |
|
2 |
High vcdupe teot - Sample, monufeciuring length - Test duretwm S nun. tor etch car* ■ Том voMago: J.bkVAC |
Mo breakdown |
HO 006 Sub-elouoo 3.Z1 |
ТаЬй 28 - Swnpte teste
|
1 |
1 |
3 |
4 |
|
M. No |
Property |
Roqubwnonte eccording to |
T«*t method ecccxtUng to |
|
1 |
Conductor dMion |
ТоЫ* Э «nd Sub-cMJM 3.2.1 |
Veu«d oaeminellon and НОВОв. 1Л, Bub-daw* «.3 |
|
2 |
liwutotion • wM ihtctmea* |
Т*Ые В and Bub- cteiM* 3 2 2 |
HD Б06.1.1. ЗиОсйимСІ |
|
|
♦ hot Mt b«h«vk»r (on compound НЮ onM |
Тема ід |
HD 606-2.1. Sut>cl*u*« В |
|
3 |
Concentric oonAjctor (d *n/) - «росс b«tw*en wfc«* |
Bub-ctoue* 3-2'1 |
HD 606, Sub-clouee 2.1.0.2 |
|
4 |
Extruded nner eh»eih - wed іЬшкпме |
Т«Ы» Б «nd Sub- сіаим 32 8 |
HD &06Л .12. биЬсЫм 8.2 |
|
|
hot Mt behaviour Ion compound HMC onM |
ТаЫ» IB |
MD Б06.2.1. Сіаим В |
|
Б |
Outer ehMth • Wtf ІІМСкПМ |
Tebh 4 end Sub- daw« 3.2.1 |
HD 506.1.1. Sub oMe* 8 2 |
|
|
- hot Mt bohevtour Ion compound HMC o**M |
Tetri* IB |
ND 506.2.1, CImjmB |
|
6 |
Coble marking |
Sub-ctouM 2-2 |
VieuH exemtnenon end ffiMeurement |
