Table 3 - Dimension for preferred designs
|
Number and nominal cross' sectional area of conductors |
Material and class of conductor |
Thickness of insulation |
Thickness of Inner Covering |
Thickness of Sheath |
|
|
|
Specified Value |
Approx. Value |
Specified Value |
|
{mmH |
1HD 3631 |
Imml |
(nvnl |
(mml |
|
lx 1.5 |
Co 1 |
0.8 |
o.e |
1Л |
|
1 к 2.5 |
Cu 1 |
0.8 |
0.6 |
1.5 |
|
1 x 4 |
Cu 1 |
0.9 |
0.6 |
1,5 |
|
1 x 6 |
Си 2 |
0.9 |
0.6 |
15 |
|
1 x 10 |
Си 2 |
1,1 |
0.7 |
1.6 |
|
1 x 16 |
Си 2 |
1,1 |
0.8 |
1,6 |
|
1 x 25 |
Си 2 |
1.3 |
0 9 |
1,8 |
|
2x 1.5 |
Си 1 |
0.8 |
0.6 |
1.5 |
|
2 M 2.6 |
Си 1 |
o.e |
0.6 |
1.5 |
|
2x 4 |
Си 1 |
09 |
0.6 |
1.5 |
|
2x 6 |
Си 2 |
0,9 |
0.6 |
1.5 |
|
2 x 10 |
Си 2 |
11 |
0,7 |
1.5 |
|
2 x 16 |
Си 2 |
1.1 |
0.8 |
1.6 |
|
2 x 25 |
Си 2 |
13 |
0.9 |
1.8 |
Table 3 (concluded)
|
Number and nominal cross- sectional area of conductors |
Material and class of conductor |
Thickness of insulation |
Thickness of Inner Covering |
Thickness of Sheath |
|
|
|
Specified Value |
Approx. Value |
Specified Value |
|
(mm1) |
(HD 383) |
(mml |
(ml |
(mml |
|
3 к 1*5 |
Cu 1 |
0*8 |
0.6 |
1*5 |
|
3x 2 5 |
Си 1 |
08 |
0.6 |
1.5 |
|
3x4 |
Cu 1 |
0.9 |
0.6 |
1*5 |
|
Зх в |
Cu 2 |
09 |
0.7 |
1.5 |
|
3 x 10 |
Cu 2 |
1Л |
0,7 |
1,6 |
|
3 x 16 |
Cu 2 |
1.1 |
0.8 |
1.6 |
|
3x25 |
Cu 2 |
1.3 |
0.9 |
1.8 |
|
4 x 1*5 |
Си 1 |
0.8 |
0.6 |
IS |
|
4x 2 5 |
Cu 1 |
0.8 |
0.6 |
1*5 |
|
4x4 |
Си 1 |
0 9 |
0.7 |
1*5 |
|
4x 6 |
Cu 2 |
09 |
0.7 |
1.5 |
|
4x10 |
Cu 2 |
1x1 |
0.8 |
1.6 |
|
4x16 |
Cu 2 |
1*1 |
0.8 |
1.6 |
|
4 x 25 |
Cu 2 |
13 |
0.9 |
1,8 |
|
5 м 1.5 |
Cu 1 |
0 8 |
0.6 |
1.5 |
|
5x 2*5 |
Cu 1 |
0 8 |
0.6 |
L5 |
|
5x 4 |
Си 1 |
0*9 |
0.7 |
1.5 |
|
5x 6 |
Cu 2 |
0*9 |
0.7 |
1.6 |
|
5 x 10 |
Cu 2 |
1*1 |
0.8 |
16 |
|
5x18 |
Cu 2 |
LI |
0.9 |
1*8 |
|
5 X 25 |
Cu 2 |
1.3 |
1.0 |
2.0 |
APPENDIX A
GUIDE TOUSE
S££tfi£
This Guide to Use is vabd foe the application of 0.6/1 kV crosslinked polyethylene and silicone rubber insulated and halogen-free compound sheathed single and multi-core cables with special fra performance properties, mainly intended for use in power plants and substations.
QfelsSH
The object of this document is to provide recommendations for the selection, storage, transportation and installation of the cables, specified under item 1, Scope,
NOTE: Safety reauiroments as well as rules of installation are пот considered in this Guide to Usa, as they are covered by relevant regulations and laws.
Recommendations for use
Permissible applications
Specified cables according to HD 604 Part 5 Section F may be indoors, also in wet locations, and outdoors for installations on walls and metallic structures. Direct burial in soil is allowed, as long as the relevant rules of installation are followed.
Highest permissible voltage
Cables rate at Uo/U = 0 6/1 кV may be used in DC systems having a rated operation voltage between conductors not higher chan 1.5kV. and between conductors and earth not higher than 0.9kV
Concennic conductor
The concentric conductor may be used as neutral, PE-conductor, PEN-conductor or as a screen in accordance with relevant regulations.
Recommandatmns for storaoe and transport
Delivery
The distance between the outer cable layer of a fil!ed-up-cable*delivery-drum and the head of the flange shall ba sufficiently high ю avoid damage to the cable.
СаЫа-end seakto
The cable-ends have to be sealed waterproof during transport, storage and laying.
Transport
4,3'1 For the transport of fiNed-up cable reels only suitable carriers shall be used.
Cable drums with fl ange diameters а хсееФпд 1 m have to be transported with the drum axis in the horizontal position. The drums have to be protected against movement. Loading and unloading shall be made by suitable devices to avoid damage to the cables and to the cable drums.Fil led'up cable drums shell be rolled only on short distances over plain solid ground in the diractitxi indicated on the cable drum. The cable ends have to be tightened.
4.3.2 Short cable lengths may be coiled to rings and trans ported and stored horlzomaly. The permissible bending radii shall not fall short of the values given in clause 5.4.
Recommendation for cable laving and installation
General recommendationa
The cable route, the laying method and the service comfit ions shad be taken into account when selecting the type of cable.
Cables shah be laid and operated in such a way that Шек properties are not endangered.
bn this context rhe following items shall be taken into account:
lai The service conditions. like concentrations of cable quantities, influence of external beat, specific earth resistance, protection against solar radiation, which form the basis for ths selection of the cable type;
(bj Leakage or stray currents and corrosion;
Movements of soil, vibrations (foundations of machines, bridges I, shakes;
The method of laying and the bedding material have io be selected in respect of the outer cable sheath to avoid mechanical damage;
Protection against outer influence, e.g, chemical solvents.
Cables shall be protected against mechanical damage occurring after installation.
Cables laid in ground are considered as being sufficiently mechanicaly protected, if relevant regulations and lews concerning laying depth in ground and protection are folk) wed
The laying depth in the ground shall be according co the relevant regulations and laws.
Inner diameters of ducts and pipes have to have at least a diameter of 1.5 times the cable diameter
In case of several cables within one pipe the diameter of the pipe has to be that wide that the cables do not block themselves.
It it is planned to lay single core cables of a three-phase-system through steel pipes, al cables belonging to the seme system have to pass through the seme pipa.
It is recommended to protect the pipe against chocking with sand.
The cables shall be installed in such a way that the spread of fire end its consequences are fimfted. The relevant specifications, especially those for preventive tire protection, shall be taken into account.
6,2 Lowest permitted installation temperature
The lowest showed temperature of the cables during installation and mounting of accessories is:
0*C for XLPt or si Econe rubber insulated end halogen-free flame retardant compound sheathed cables according to HD 604 Pan 5 Section F.
The temperature is vakd for the cable itself and not foe the surroundings. If the cables do have a bovver temperature than per mined, it must be heated up.
Caro has to be taken that the temperature remains above the lowest permitted during the whole laying operation.
5.3 Puling loads
Б.3.1 For pulling in of cables by means of a pul ting-head at the conductors, the folio wing maximum values for the pulling forces are allowed:
lai For cables with copper conductors a ■ 50 N/mm* (bl For cables with al и mm rum conductors о * 25 N/mm* ІСІ The maximum pulling force for aR cables must not exceed 20,000 N
With these pulling forces it Із guaranteed that the permitted elongation of 0.2% for the conductor will not be exceeded. The maximum pulling force (PI is calculated from the total of the CSA [Si. The CSA of the screens and of the concentric conductors shall not be considered in this calculation:
P - S<<7
where
Pin N
<7 ІП N/mm*
S in
For the pulling in of cables without a metallic covering, having polymeric kisutation and sheath, the pulling force can be transmitted by a pulling grip via a frictional connection between the pulling gripand the conductor of the cable- Therefore the same pulling loads apply as for sub-clause 5 3.1.
Cables may be dug in also by means of a plough or they may be pulled into earth tubings gained by a flushing-in method.
For the simultaneous laying of three single core cables by using only one pulling grip the same maximum pulling forces according to sub-clause 5.3.1 apply. For three stranded single core cables the total pulling force is three times while for three parallel arranged cables only two times the maximum permissible value for a single core cable.
It is assumed that the cable route is well designed for the laying procedure with wel established curves and a sufficient number of cable rulers. Special attention shall ba paid to the required minimum bending radii [see sub-clause 5,4). The pultng forces «ball be permanently supervised during the pull-in procedure.
5.4 Bending radius
5-4,1 During installation the bending radius shall not fall below the foUowog values:
15 times the cable diameter for single core cables
10 times the cable diameter for multicoce cablesPage 5^18 HD 604 S1:1994 Рал & Soctxxi F
After ins taxation the bending radius shall not fall below the folowing values:
15 times the cable diameter for single core cables
10 times the cable diameter for multicore cables
5.4.2 In case of single time bending of a core - for example in front of a terminal * rt is permitted to reduce the bending radius by 50%, provided that the work is made by skilled personnel that the cable Is heated up to 30°C and that the cable is bent by means of a template.APPENDIX В
CURRENT RATINGS
The appropriate value of current-carrying capacities may be determined as indicated in IEC Publication 267. In each case account may be taken of the characteristics of the load.
The basic operating conditions for cables in air are ae follows:
30°C air temperature
continuous loadBLANK PAGE'
SECTION G : CABLES WITH COPPER CONDUCTORS AND OPTIONAL
COPPER CONCENTRIC CONDUCTOR
£Q№№
Ease
Scope 5-G-2
и Additional gerwal requirements 2-1 identification of сотеє 5-G 2
Cable marking S-G-3
Additional test requirements 5’G’4
Cables without or with concentric conductor
Code designation (Provisional) 5-G 5
Reted vohage 5-G-5
Construction 6’G’S
Tests 5-G-6
Tables: 1 -9 5-G-7
Appendices: A: Guide to use E-G-21
Currant-carrying capacity 5-G-25
REFERENCES
References era mada, ki this Section G of Part 5 of HD 604, to other Parts of this HD and to other Harmonisation Documents and International Standards as follows:
HD 21 Polyvinyl chloride insulated cables of rated voltages up to and including 4 50/7 SO V
HD 22 Rubbar insulated cables of rated voltages up to and including 450/750V
HO 186 Marking by inscrvtion for the identification of cores of electric cables having more than five
cores
HO 383 Conductors of insulated cables (Endorsing I EC 228 and 228A)
HD 405 Tests on electric cables under fee conditions
HD SOS Common test methods for insulating and sheathing materials of electric cables
HD 602 Test on gases evolved during the combustion of materials from cables : Determination of
degree of acidity (conosrvityl of gases by measuring pH and conductivity
HQ 60S Electric cables ; Additional test methods
HD 606 Measurement of smoke density of electric cables burning under defined conations
IEC 502 Extruded solid dielectric insulated power cables for rated voltages from IkV to 30kV
In aM cases reference to another HD or International Standard implies the latest edition of that document.SECTION G
1
This section specifies requirements for end dimensions of акц>е*соге and multi-core crosslinked polyethylene insulated and thermoplastic polyolefin sheathed halogen free cables having improved performance charsctenatices in case of fire.
The maximum continuous operating temperature at conductor shaN not exceed 90*C, The maximum temperature for short circuit conditions is 250* C.
This section covers the following classes of cables:
til Single core cables having copper conductor and a concentric copper conductor, if requested;
Гм) 2-5 core cables having copper conductors and a concentric copper conductor. H requested;
(иі) Auxiliary cables having 7 up to 40 cores with copper conductors and a concentric copper conductor, if requested.
Additional о eneral requirements
The fottawing general requirements shall be read in conjunction with those given in Pan 1.
Identification of cores
The cores of cables having one up to five conductors shall be identified by colours in accordance with the following scheme:
|
Number of 00ГМ |
|
|
|
CobNo with |
СоЫов without |
|
|
groan-у «low core |
||
|
1 2 3 4 6 |
grnn-ydk»M green-ydtow. block™ ^wn vdlow. Ымк, rtuo groan-yollow, black. tMjo. brown {peon-yellow, black, blue, brown. Масі |
block black, hbo black, bkio. brown bbckr bk*o. brown, Ыоск block, bluo, brown, block Neck |
Permissible only for cross sectional ereaa greater than or equal to 10mm* The identification of a core having a reduced сл.а- shall be: - green-yellow for cables with green-yellow core * blue for cables without greamyeflow core
