Mv Concentric Al Cable 1X400mm2
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1.Construction of Concentric aluminum cable :
(1)Phase Conductors
a) The phase conductor shall be circular stranded annealed aluminum conductors (class 2).The phase conductor shall have a left-hand direction lf lay .
b) The insulation of the phase conductor shall be red PVC compound specified in KS 04-1022.It shall be applied by an extrusion process and shall be spark tested.
(2)Concentric Layer
a) The neutral conductor shall be concentric and shall be manufactured from plain annealed aluminum wires.
b) The concentric layer shall be applied with a right hand direction of lay.
(3)Over sheath
The over sheath shall be an extruded layer of black PVC
2. Technical Data of Concentric aluminum cable :
(1) Rated Voltage Uo/U (Um):0.6/1kv
(2)Max conductor temperatures:
90° at continuous service, 130° overloaded and 250° at short-circuit.
3.Specs of Concentric aluminum cable:
Phase Conductor | Concentric neutral conductors : Number /approx. diameter of wires NO./mm |
Minimum lay lengths mm |
Thickness of over sheath mm |
Approximate overall diameter mm |
Maximum conductor DC resistance per 1000mof cable at 20°C | ||||
Nominal area mm |
No. /approx dia. of wires mm |
Thickness of insulation mm |
|||||||
Phase Ohms |
Neutral Ohms |
||||||||
16 | 7/1.70 | 1.55 | 26/1.13 | 155 | 1.4 | 13.34 | 1.91 | 1.808 | |
25 | 7/2.14 | 1.60 | 29/1.13 | 165 | 1.5 | 14.88 | 1.20 | 1.0586 | |
35 | 19/1.53 | 1.65 | 27/1.35 | 178 | 1.6 | 16.75 | 0.8686 | 0.796 |
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