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600/1000V Single Phase Concentric Cable With Stranded Copper Wire Neutral Conductors
600/1000V Single Phase Concentric Cable With Stranded Copper Wire Neutral Conductors
1. SCOPE
This Kenya Standard specifies requirements and dimensions for PVC-insulated single phase concentric cables for operation on an earthed neutral system at nominal voltages up-to and including 1 000 V between phases and 600 V to earth. The cables have a central phase conductor insulated with red PVC and a concentric layer comprising bare wires (neutral conductor). In any one cable both the phase and neutral conductors are of the same material i.e. both copper or both aluminium.
The cables are suitable for underground or general use in situations where the combination of ambient temperature and temperature-rise due to loading current results in a conductor temperature not exceeding 70 °C.
2. REFERENCES
The following standard contains provisions which, through reference in this text constitute provisions of this specification. Unless otherwise stated, the latest editions (including amendments) apply.
ISO 9001: Quality Management System-Requirements
ISO/IEC 17025: General requirements for the competence of testing and calibration laboratories.
KS 04-1022:- Kenya Standard Specification for 600/1000V PVC-insulated single-phase
concentric cables with copper or aluminum conductors for electricity supply.
3 .STANDARD SIZES AND CHARACTERISTICS
The characteristics of the cables shall comply with table
Phase Conductor |
Concentric neutral conductor |
Minimum lay length mm |
Oversheath Thickness mm |
Approx. overall diameter mm |
Maximum conductor dc resistance per 1000m of cable at 20°C |
|||
Nominal area mm² |
No. /Dia. mm |
Insulation Thickness mm |
No. /Dia. mm |
Phase ohms |
Neutral ohms |
|||
4 |
7/0.85 |
1.55 |
24/0.85 |
59 |
1.4 |
9.75 |
4.61 |
1.343 |
6 |
7/1.04 |
1.55 |
26/0.85 |
63 |
1.4 |
10.72 |
3.08 |
1.24 |
10 | 7/1.35 | 1.55 | 29/0.85 | 71 | 1.4 | 11.73 | 1.83 | 1.151 |
16 |
7/1.70 |
1.55 |
26/1.13 |
84 |
1.4 |
12.78 |
1.15 |
1.0074 |
25 |
7/2.14 |
1.60 |
29/1.13 |
95 |
1.5 |
14.88 |
0.727 |
0.629 |
35 |
19/1.53 |
1.65 |
27/1.35 |
109 |
1.6 |
16.75 |
0.524 |
0.473 |
CONCENTRIC CABLE SELECTION
Please contact us for technical support with the right cable selection for your power distribution projectsand to discuss your maintenance or project specific requirements.