Conductor: The cable conductors can be made of copper or aluminium, depending on customer’s preference or current carrying capacity. Large size solid conductors are made of aluminium. Available constructions including: round solid conductors up to 2000mm² (RE); circular stranded compacted conductors up to 1200mm² (RM); circular conductors with shaped wires up to 2000mm² (RM, Keystone conductors); segmental conductors up to 2500mm² (RMS, Milliken conductors); oval shaped stranded compacted conductors up to 800mm² for external gas pressure cables (OM). Conductor Screen: Extruded layer of semi-conducting cross-linkable compound is applied over the conductor and shall cover the surface completely. Insulation: Insulation is of cross-linked polyethylene compound XLPE. Insulation Screen: Extruded layer of semi-conducting cross-linkable compound is applied over the insulation. Metallic Layer: The metallic layer may be applied over the core assembly collectively. The metallic screen shall consist of either copper tapes or a concentric layer of copper wires or a combination of tapes and wires. Separation Sheath: Aluminum Tape sheath Outer Sheath: PE

CONSTRUCTION PARAMETER

Nom. Cross-Section	Nom. Insulation	Copper Wire Screen	Approx. Overall	Approx. Weight
Area	Thickness	Area	Diameter	CU	AL
mm²	mm	mm²	mm	kg/m
240	15	95	65	5.6	4.1
300	15	95	67	6.3	4.5
400	15	95	71	7.2	5
500	14	95	72	8.2	5.3
630	14	95	76	9.7	5.9
800	14	95	80	11.6	6.7
1000	14	95	86	14	7.4
1200	14	95	92	16	8.7
1600	14	95	98	19.9	10.4
2000	14	95	106	24.2	12
2500	14	95	114	30	14.3

ELECTRICAL PROPERTIES

							Continuous Current Rating for Single Circuit (in air)
Nom. Cross-	DC		AC		Capacitance	Inductance
Section	Resistance @20°C		Resistance @90°C		per core		Cu conductor		Al conductor
Area	Cu	Al	Cu	Al			Trefoil	Flat	Trefoil	Flat
mm²	Ω/km	Ω/km	Ω/km	Ω/km	µF/km	mH/km	A		A
240	0.0754	0.125	0.0973	0.161	0.141	0.442	576	715	449	557
300	0.0601	0.1	0.0781	0.129	0.152	0.424	658	820	515	642
400	0.047	0.0778	0.0618	0.101	0.165	0.407	762	955	601	752
500	0.0366	0.0605	0.0492	0.0791	0.188	0.392	877	1108	697	878
630	0.0283	0.0469	0.0393	0.0622	0.206	0.376	1012	1292	807	1023
800	0.0221	0.0367	0.0326	0.05	0.224	0.363	1149	1483	931	1189
1000	0.0176	0.0291	0.0232	0.0375	0.251	0.349	1292	1688	1060	1364
1200	0.0151	0.0247	0.0201	0.0319	0.275	0.34	1542	1974	1226	1558
1600	0.0113	0.0186	0.0156	0.024	0.304	0.328	1741	2251	1432	1834
2000	0.009	0.0149	0.0129	0.0193	0.336	0.318	1942	2536	1619	2085
2500	0.0072	0.0119	0.0109	0.0156	0.372	0.309	2149	2836	1815	2353