Bare Conductors

STACIR — Steel Reinforced Aluminum Conductor Invar Reinforced Trapezoidal Wire

Super Thermal Alloy Conductor Invar Reinforced (STACIR) conductor has outer layers composed of Super Thermal Aluminium (STAL) alloy wires that can operate up to 210°C (410°F). The inner core is composed of aluminium clad INVAR wires. INVAR is a metal alloy with 36% Ni in steel.

Core Wire (INVAR) : Aluminum-clad INVAR Wire/High Tensile Strength Aluminum-clad INVAR Wire Conductor (STAl) : Super Thermal…
Basic design to IEC, ASTM, JCS 1405 standard

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Application

Super Thermal Alloy Conductor Invar Reinforced (STACIR) conductor has outer layers composed of Super Thermal Aluminium (STAL) alloy wires that can operate up to 210°C (410°F). The inner core is composed of aluminium clad INVAR wires. INVAR is a metal alloy with 36% Ni in steel.

STACIR/AW conductors are suited for re-conductoring applications. The capacity of existing transmission line can be enhanced by simply replacing the existing conductor without any modification to the tower.

Hi-STACIR/AW, STACIR/AW is normally used to up-rate an existing transmission line by simply replacing the exisitng conductor without tower modification or reinforcement.

Standard

Basic design to IEC, ASTM, JCS 1405 standard

Construction

Core Wire (INVAR) : Aluminum-clad INVAR Wire/High Tensile Strength Aluminum-clad INVAR Wire

Conductor (STAl) : Super Thermal Resistant Aluminum Alloy Wire used for continuous allowable temperature up to 210℃

Benefits

Can carry 100% more current than that of ACSR of the same size, while maximum sag and maximum working tension remain the same as that of ACSR.

No modification or reinforcement is required to existing towers for uprating transmission and distribution lines.

Construction Parameters

SUPER THERMAL RESISTANT ALUMINUM ALLOY CONDUCTOR, ALUMINUM CLAD INVAR REINFORCED (STACIR)

Conductor Size	Stranding				Cross-Sectional Area			Diameter of Complete Conductor	Weight			Rated Strength	DC Resistance @ 20°C	Current Capacity
	No. of Wires		Wire diameter		STAL	Invar	Total		STAL	Steel	Total			Current Capacity
	STAL	Invar	STAL	Invar	STAL	Invar	Total		STAL	Steel	Total			@ 85°C	@ 150°C	@ 210°C
(mm²)	(No.)	(No.)	(mm)	(mm)	(mm²)	(mm²)	(mm²)	(mm)	(Kg/Km)	(Kg/Km)	(Kg/Km)	(KN)	(Ω/Km)	(Ampere)	(Ampere)	(Ampere)
200	30	7	2.60	2.60	159.28	37.17	196.44	18.20	439.31	265.01	704.32	65.38	0.1746	403	690	850
240	30	7	2.90	2.90	198.16	46.24	244.39	20.30	546.54	329.69	876.23	79.92	0.1403	460	794	980
300	30	7	3.20	3.20	241.27	56.30	297.57	22.40	665.47	401.43	1066.90	94.82	0.1153	518	901	1114
300	30	7	3.20	3.20	241.27	56.30	297.57	22.40	665.47	401.43	1066.90	94.82	0.1153	518	901	1114
380	26	7	4.00	3.10	326.73	52.83	379.56	25.30	902.22	376.73	1278.95	104.26	0.0866	612	1076	1335
380	26	7	4.00	3.10	326.73	52.83	379.56	25.30	902.22	376.73	1278.95	104.26	0.0866	612	1076	1335
480	26	7	4.50	3.50	413.51	67.35	480.86	28.50	1141.87	480.23	1622.10	132.42	0.0684	704	1253	1559
480	26	7	4.50	3.50	413.51	67.35	480.86	28.50	1141.87	480.23	1622.10	132.42	0.0684	704	1253	1559
520	45	7	3.70	2.47	483.85	33.54	517.39	29.61	1337.00	239.17	1576.17	113.10	0.0597	748	1336	1665
520	45	7	3.70	2.47	483.85	33.54	517.39	29.61	1337.00	239.17	1576.17	113.10	0.0597	748	1336	1665
590	54	7	3.50	3.50	519.54	67.35	586.89	31.50	1437.04	480.23	1917.27	150.84	0.0549	790	1419	1771
600	54	7	3.53	3.53	528.49	68.51	596.99	31.77	1461.78	488.50	1950.28	152.20	0.0540	797	1434	1791
630	54	19	3.63	2.18	558.85	70.92	629.77	32.68	1545.78	507.40	2053.17	163.93	0.0511	824	1486	1857
690	54	7	3.80	3.80	612.42	79.39	691.81	34.20	1693.95	566.08	2260.03	176.38	0.0466	869	1576	1972
710	54	19	3.85	2.31	628.65	79.63	708.27	34.65	1738.82	569.72	2308.54	182.37	0.0454	883	1602	2006
730	45	7	4.40	2.90	684.24	46.24	730.48	35.10	1890.75	329.69	2220.44	155.82	0.0423	914	1663	2084
770	54	7	4.00	4.00	678.59	87.96	766.55	36.00	1876.95	627.24	2504.19	193.40	0.0421	922	1682	2108
800	54	19	4.09	2.45	709.47	89.57	799.04	36.79	1962.37	640.86	2603.23	205.51	0.0403	946	1729	2169
900	54	19	4.34	2.61	798.85	101.65	900.50	39.09	2209.60	727.30	2936.90	230.40	0.0357	1014	1868	2348

SUPER THERMAL RESISTANT ALUMINUM ALLOY CONDUCTOR, ALUMINUM CLAD INVAR REINFORCED (STACIR/TW)

Conductor Size	Cross-Sectional Area			Stranding				Diameter of Complete Conductor	Weight			Rated Strength	DC Resistance @ 20°C	Current Capacity
	STAL	Invar	Total	No. of STAL Wires	No. of STAL Layers	No. of Invar Wires	Dia. of Invar Wires		STAL	Invar	Total			Current Capacity
	STAL	Invar	Total	No. of STAL Wires	No. of STAL Layers	No. of Invar Wires	Dia. of Invar Wires		STAL	Invar	Total			@ 85°C	@ 150°C	@ 210°C
(mm²)	(mm²)	(mm²)	(mm²)	(No.)	(No.)	(No.)	(mm)	(mm)	(Kg/Km)	(Kg/Km)	(Kg/Km)	(KN)	(Ω/Km)	(Ampere)	(Ampere)	(Ampere)
320	322.26	52.49	374.75	20	2	7	3.09	22.88	888.49	374.31	1262.80	100.95	0.0876	596	1039	1287
340	336.85	54.90	391.75	20	2	7	3.16	23.38	928.73	391.46	1320.19	105.55	0.0838	612	1069	1324
390	389.25	50.81	440.06	20	2	7	3.04	24.72	1073.18	362.29	1435.47	109.47	0.0731	662	1163	1442
405	402.83	52.15	454.98	20	2	7	3.08	25.14	1110.62	371.89	1482.51	112.86	0.0706	676	1189	1475
480	479.69	47.20	526.89	35	3	7	2.93	26.98	1329.03	336.55	1665.58	123.00	0.0600	733	1298	1613
490	489.57	63.55	553.13	24	2	7	3.40	27.70	1349.78	453.18	1802.96	136.19	0.0581	759	1347	1676
525	523.67	26.85	550.53	30	3	7	2.21	27.50	1450.88	191.47	1642.35	107.39	0.0556	763	1354	1685
590	586.76	41.28	628.03	33	3	7	2.74	29.40	1625.66	294.31	1919.97	131.16	0.0494	820	1464	1825
625	625.07	79.63	704.69	38	3	19	2.31	31.32	1731.79	569.72	2301.51	177.43	0.0458	862	1549	1935
640	636.97	44.03	681.00	35	3	7	2.83	30.60	1764.78	313.97	2078.75	141.60	0.0455	860	1542	1925
680	676.24	85.95	762.20	39	3	19	2.40	32.58	1873.58	614.97	2488.55	191.75	0.0423	903	1630	2037
690	688.96	47.52	736.48	36	3	7	2.94	31.80	1908.82	338.85	2247.67	151.77	0.0421	899	1620	2024
725	725.09	91.78	816.87	39	3	19	2.48	33.72	2008.91	656.66	2665.57	205.21	0.0395	940	1703	2131
730	726.41	91.78	818.19	39	3	19	2.48	33.75	2012.56	656.66	2669.22	205.41	0.0394	941	1705	2134
740	737.40	51.14	788.54	36	3	7	3.05	32.92	2043.02	364.68	2407.70	162.72	0.0393	936	1692	2117
780	776.92	98.56	875.49	39	3	19	2.57	34.90	2152.52	705.18	2857.70	218.33	0.0368	979	1780	2231
790	789.13	54.55	843.69	36	3	7	3.15	34.05	2186.36	388.98	2575.34	173.95	0.0367	973	1767	2213
820	821.87	108.79	930.65	39	3	19	2.70	36.00	2277.05	778.33	3055.38	235.56	0.0348	1012	1847	2316
840	839.80	58.07	897.88	36	3	7	3.25	35.14	2326.74	414.07	2740.81	185.14	0.0345	1008	1837	2304
880	876.90	111.22	988.11	42	3	19	2.73	37.10	2429.50	795.72	3225.22	246.40	0.0326	1050	1923	2414
890	891.08	61.70	952.78	42	3	7	3.35	36.18	2468.81	439.95	2908.76	195.42	0.0325	1043	1907	2394
900	901.93	73.54	975.47	42	3	19	2.22	36.70	2498.85	526.19	3025.04	213.21	0.0320	1054	1931	2425
980	976.36	123.77	1100.13	42	3	19	2.88	39.12	2705.08	885.56	3590.64	274.28	0.0293	1115	2056	2587
990	987.86	68.90	1056.76	42	3	7	3.54	38.10	2736.95	491.27	3228.22	217.12	0.0293	1105	2035	2560

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