Aluminum Conductor Steel reinforced (ACSR)

Introduction Inquiry

APPLICATION
ACSR conductors are widely used for electrical power transmission over long distances, since they are ideal for long overhead lines spans. They are also used as a messenger for supporting overhead electrical cables.

STANDARD
Basic design to JIS C 3110 standard.

CONSTRUCTION
ACSR conductors are formed by several wires of aluminium and galvanized steel, stranded in concentric layers. The wire or wires which form the core, are made of galvanized steel and the external layer or layers, are of aluminium. Galvanized steel core consist normally of 1, 7 or 19 wires. The diameters of steel and aluminium wires can be the same, or different. By varying the relative proportions of aluminium and steel, the required characteristics for any particular application can be reached. A higher U. T. S. Can be obtained, by increasing steel content, and a higher current carrying capacity by increasing aluminium content.

ELECTRICAL PROPERTIES

Density@20ºC	Aluminum: 2.703 kg/dm
Density@20ºC	Galvanized Steel: 7.80 kg/dm
Temperature Coefficient@20°C	Aluminum: 0.00403 (°C)
Resistivity@20°C	Aluminum: Should not exceed 0.028264
Linear Expansivity	Aluminum: 23 x10 (°C)
Linear Expansivity	Galvanized Steel: 11.5 x10 (1/°C)

SERVICE CONDITIONS

Ambient Temperature	-5°C - 50°C
Wind Pressure	80 – 130kg/m2
Seismic Acceleration	0.12 - 0.05g
Isokeraunic Level	10 – 18
Relative Humidity	5 – 100%

CONSTRUCTION PARAMETERS

Nominal	Sectional Area			Stranding					Electrical
Sectional	Sectional Area			Stranding		Overall	Weight	Breaking	Resistance
Area	AL	Steel	Total	AL	Steel	Diameter		Load	@20º
mm2	mm2	mm2	mm2	No.×mm	No.×mm	mm	Kg/Km	KN	Ω/Km
25	24.9	4.2	29.1	6/2.30	1/2.30	6.9	101	8.89	1.15
32	31.9	5.3	37.2	6/2.60	1/2.60	7.8	129	11.17	0.899
58	57.7	9.6	67.3	6/3.50	1/3.50	10.5	233	19.4	0.497
95	95.4	15.9	111.3	6/4.50	1/4.50	13.5	385	31.16	0.301
120	125	29.1	153.8	30/2.3	7/2.3	16.1	574	54.29	0.233
160	159	37.2	196.5	30/2.6	7/2.6	18.2	733	68.4	0.182
200	198	46.2	244.4	30/2.9	7/2.9	20.3	912	84.67	0.147
240	241	59.3	300.5	30/3.2	7/3.2	22.4	1110	100.06	0.12
330	327	52.8	379.6	26/4.0	7/3.1	25.3	1320	107.31	0.0888
410	413	67.3	480.7	26/4.5	7/3.5	28.5	1673	136.32	0.0702
520	520	67.3	586.8	54/3.5	7/3.5	31.2	1969	152.88	0.0559
610	612	79.4	691.8	54/3.8	7/3.8	34.2	2320	179.83	0.0474
810	815	56.3	870.8	45/3.8	7/3.2	38.4	2700	181.1	0.0356

TECHNICAL DATA

Numbers of Wires		Final Modules of Elasticity		Coefficient of Linear Expansion
Al	Steel	Kg/mm2	lb/in2	1/Cº	1/Fº
6	1	81	11.5 x106	19.1 x10-6	10.6 x10-6
6	7	77	11.0 x106	19.8 x10-6	11.0 x10-6
12	7	107	15.2 x106	15.3 x10-6	8.5 x10-6
18	1	67	9.5 x106	21.2 x10-6	11.8 x10-6
24	7	74	10.5 x106	19.6 x10-6	10.9 x10-6
26	7	77	10.9 x106	18.9 x10-6	10.5 x10-6
28	7	79	11.2 x106	18.4 x10-6	10.2 x10-6
30	7	82	11.6 x106	17.8 x10-6	9.9 x10-6
30	19	80	11.4 x106	18.0 x10-6	10.0 x10-6
32	19	82	11.7 x106	17.5 x10-6	9.7 x10-6
54	7	70	9.9 x106	19.3 x10-6	10.7 x10-6
54	19	68	9.7 x106	19.4 x10-6	10.8 x10-6

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