TACSR & KTACSR/AW Conductors

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TACSR & KTACSR/AW Conductors

TACSR – high-temperature conductor for heavy-load lines.

KTACSR/AW – corrosion-resistant & heat-tolerant.

Ideal for reconductoring and power line upgrades.

TACSR conductors with low sag at 150–200°C.

Get KTACSR/AW direct from factory with ASTM/IEC compliance.

Application

TACSR (Thermal Resistant Aluminium Conductor Steel Reinforced) and KTACSR/AW (Aluminum-clad Steel-core Aluminum Stranded Wire) are overhead conductors designed for power transmission in high temperature environments. They use heat-resistant aluminum alloys (such as Zirconium-Aluminum, containing zirconium aluminum) as conductive materials in their structure, have higher thermal stability, and can operate for a long time in the temperature range of 150°C~210°C.

TACSR conductors use galvanized steel wire as reinforced core wires, while KTACSR/AW further uses aluminum-clad steel (AW) core wires to improve corrosion resistance and electrical compatibility. Both conductors can achieve line capacity expansion without replacing towers and hardware, and are particularly suitable for upgrading high-load, long-distance transmission lines.

Its main advantages include: maintaining mechanical strength and conductivity at high temperatures, reducing power loss, and extending service life. They are widely used in the reconstruction of old lines, high-voltage or ultra-high-voltage overhead transmission lines in mountainous areas, high-temperature areas and industrial areas.

Specifications

Parameter	TACSR (Thermal-resistant Aluminum Conductor, Steel Reinforced)	KTACSR/AW (Knurled Thermal Aluminum Conductor, Aluminum-Clad Steel Reinforced)
Outer Conductor Material	Thermal-resistant aluminum alloy (e.g., Al-Zr, TAL)	Knurled thermal-resistant aluminum alloy (e.g., Al-Zr, TAL)
Core Material	Galvanized steel	Aluminum-clad steel (ACS)
Aluminum Temper	Heat-resistant, hardened (TAL)	Heat-resistant, hardened and knurled for better mechanical bonding
Knurling	No	Yes – improves grip between layers, reduces slippage and sag
Corrosion Resistance	Moderate (depends on galvanizing)	Excellent – due to aluminum-clad steel core
Magnetic Properties	Magnetic (steel core)	Lower magnetic effect than galvanized steel (ACS core is semi-magnetic)
Operating Temperature	Up to 150–210°C	Up to 150–210°C
Thermal Expansion	Controlled	Controlled
Current Carrying Capacity (Ampacity)	High	High
Creep Resistance	Good	Excellent (knurling enhances strand contact)
Tensile Strength	High	High
Weight	Moderate	Slightly heavier due to ACS
Sag Performance at High Temp	Good	Superior – due to knurled surface and thermal alloy
Corrosive Environment Suitability	Moderate	Excellent – ideal for coastal/industrial zones
Installation Compatibility	Compatible with existing tower and hardware	Compatible – requires proper dead-end grip for knurled surface
Environmental Application	Standard, dry inland & moderate humidity zones	Coastal, desert, high-humidity, or industrial zones
Typical Use Cases	HTLS transmission lines, reconductoring, long spans	Harsh-climate transmission lines, salt-rich/coastal regions, ice-load areas

Parameter

HIGHSTRENGTH-THERMAL RESISTANT1

	No.of Wires		Wire diameter		KTAL	Steel	Total	Complet e Conducto	KTAL	Steel	Total	Regular Strength	HS	EHS	UHS	Resistan ce@ 20℃
	KTAL	Steel	KTAL	Steel	KTAL	Steel	Total	Complet e Conducto	KTAL	Steel	Total	Regular Strength	HS	EHS	UHS	Resistan ce@ 20℃	@85℃	@150℃
(m㎡)	(No.)	(No.)	(mm)	(mm)	(m㎡)	(m㎡)	(m㎡)	(mm)	(Kg/Km)	(Kg/Km)	(Kg/Km)	(KN)	(KN)	(KN)	(KN)	(Ω/Km)	(Ampere)	(Ampere)
58	6	1	3.5	3.5	57.73	9.62	67.35	10.5	158.42	74.84	233.26	25.84	27.19	28.15	28.49	0.5512	190	316
80	6	1	4.2	4.2	83.13	13.85	96.98	12.6	228.12	107.75	335.87	34.91	37.26	38.79	39.2	0.3828	238	399
80	15	4	2.6	2.6	79.64	21.24	100.88	13	219.14	168.22	387.36	46.94	49.7	51.93	52.67	0.4007	234	394
95	6	1	4.5	4.5	95.43	15.9	111.33	13.5	261.87	123.7	385.57	40.07	42.78	44.53	45	0.3335	258	436
100	15	4	2.9	2.9	99.08	26.42	125.5	14.5	272.63	209.25	481.88	58.09	61.53	64.3	65.23	0.3221	267	453
120	15	4	3.2	3.2	120.64	32.17	152.81	16	331.96	254.79	586.75	68.97	73.47	76.69	77.81	0.2645	301	514
120	30	7	2.3	2.3	124.64	29.08	153.72	16.1	343.77	227.22	570.99	67.26	71.04	74.09	75.11	0.2566	327	559
160	30	7	2.6	2.6	159.28	37.17	196.45	18.2	439.32	290.43	729.75	87.08	91.91	95.81	97.11	0.2008	380	655
200	30	7	2.9	2.9	198.16	46.24	244.4	20.3	546.55	361.29	907.84	107.74	113.75	118.6	120.22	0.1614	433	753
240	30	7	3.2	3.2	241.27	56.3	297.57	22.4	665.46	439.9	1105.36	127.96	135.84	141.47	143.44	0.1326	488	855
330	26	7	4	3.1	326.73	52.83	379.56	25.3	902.23	412.78	1315.01	143.27	150.67	155.95	157.8	0.098	581	1029
410	26	7	4.5	3.5	413.51	67.35	480.86	28.5	1141.86	526.24	1668.1	176.55	185.98	192.72	195.08	0.0774	669	1199
480	45	7	3.7	2.47	483.85	33.54	517.39	29.61	1337.01	262.06	1599.07	162.93	167.29	170.81	171.98	0.0662	718	1292
520	54	7	3.5	3.5	519.54	67.35	586.89	31.5	1437.04	526.24	1963.28	208.72	218.15	224.89	227.24	0.0617	753	1363
560	54	19	3.63	2.18	558.85	70.92	629.77	32.68	1545.77	556.01	2101.78	227.59	237.52	244.61	246.74	0.0574	786	1428
610	54	7	3.8	3.8	612.42	79.39	691.81	34.2	1693.94	620.31	2314.25	240.48	253.98	262.71	265.09	0.0524	829	1513
630	54	19	3.85	2.31	628.65	79.63	708.28	34.65	1738.83	624.29	2363.12	251.55	261.9	270.26	273.05	0.051	842	1540
680	45	7	4.4	2.9	684.24	46.24	730.48	35.1	1890.74	361.29	2252.03	213.14	219.15	224.01	225.63	0.0468	879	1610
680	54	7	4	4	678.59	87.96	766.55	36	1876.97	687.27	2564.24	264.42	279.37	289.05	291.69	0.0473	880	1616
710	54	19	4.09	2.45	709.47	89.57	799.04	36.79	1962.38	702.22	2664.6	274.28	285.92	295.33	298.46	0.0452	904	1663
800	54	19	4.34	2.61	798.85	101.65	900.5	39.09	2209.6	796.93	3006.53	309.85	323.07	333.74	337.3	0.0402	968	1793
810	45	7	4.8	3.2	814.3	56.3	870.6	38.4	2250.14	439.9	2690.04	244.89	252.77	258.4	260.37	0.0394	972	1798
1120	72	19	4.45	1.78	1119.81	47.28	1167.09	44.5	3097.07	370.67	3467.74	313.89	320.51	325.24	326.66	0.0286	1172	2214
1160	84	7	4.2	4.2	1163.77	96.98	1260.75	46.2	3221.17	757.75	3978.92	375.31	391.8	402.47	405.38	0.0276	1203	2283
1250	84	19	4.35	2.61	1248.39	101.65	1350.04	47.85	3455.38	796.93	4252.31	411	424.21	434.89	438.45	0.0257	1251	2385
1520	84	7	4.8	4.8	1520	126.67	1646.7	52.8	4207.25	989.73	5196.98	475.01	487.68	510.48	514.28	0.0211	1387	2687

HIGHSTRENGTH-THERMAL RESISTANT2

Conductor Size	Stranding				Cross-Sectional Area			Diameter of Complete Conductor	Weight			Rated Strength		DC Resistanc e@20℃	Current Capacity
	No.of Wires		Wire diameter		KTAL	Steel	Total		KTAL	Steel	Total	High Strength	Extra High Strength		Current Capacity
	KTAL	Steel	KTAL	Steel	KTAL	Steel	Total		KTAL	Steel	Total	High Strength	Extra High Strength		@85℃	@150℃
(m㎡)	(No.)	(No.)	(mm)	(mm)	(m㎡)	(m㎡)	(m㎡)	(mm)	(Kg/Km)	(Kg/Km)	(Kg/Km)	(KN)	(KN)	(Ω/Km)	(Ampere)	(Ampere)
58	6	1	3.5	3.5	57.73	9.62	67.35	10.5	158.42	63.39	221.81	24.88	26.71	0.538	192.57	320.32
80	6	1	4.2	4.2	83.13	13.85	96.98	12.6	228.12	91.27	319.39	33.53	36.71	0.3737	240.4	404.22
80	15	4	2.6	2.6	79.64	21.24	100.88	13	219.14	142.49	361.63	45.24	48.64	0.3647	245.01	412.77
95	6	1	4.5	4.5	95.43	15.9	111.33	13.5	261.87	104.78	366.65	37.85	42.14	0.3255	261.45	441.51
100	15	4	2.9	2.9	99.08	26.42	125.5	14.5	272.63	177.24	449.87	55.98	60.21	0.2932	279.75	474.62
120	15	4	3.2	3.2	120.64	32.17	152.81	16	331.96	215.82	547.78	67.68	71.86	0.2408	315.24	538.43
120	30	7	2.3	2.3	124.64	29.08	153.72	16.1	343.77	192.47	536.24	64.93	69.58	0.2363	341.17	582.97
160	30	7	2.6	2.6	159.28	37.17	196.45	18.2	439.32	246.01	685.33	84.1	90.05	0.1849	395.76	682.28
200	30	7	2.9	2.9	198.16	46.24	244.4	20.3	546.55	306.03	852.58	104.03	111.43	0.1486	451.57	785.07
240	30	7	3.2	3.2	241.27	56.3	297.57	22.4	665.46	372.61	1038.07	125.71	133.02	0.122	508.49	891.13
330	26	7	4	3.1	326.73	52.83	379.56	25.3	902.23	349.64	1251.87	141.16	148.02	0.0925	598.14	1059.45
410	26	7	4.5	3.5	413.51	67.35	480.86	28.5	1141.86	445.75	1587.61	169.82	182.61	0.073	688.93	1233.87
480	45	7	3.7	2.47	483.85	33.54	517.39	29.61	1337.01	221.98	1558.99	156.85	162.22	0.0646	726.87	1307.22
520	54	7	3.5	3.5	519.54	67.35	586.89	31.5	1437.04	445.75	1882.79	201.98	214.78	0.0589	770.64	1394.24
560	54	19	3.63	2.18	558.85	70.92	629.77	32.68	1545.77	470.96	2016.73	219.79	233.26	0.0548	804.18	1460.53
610	54	7	3.8	3.8	612.42	79.39	691.81	34.2	1693.94	525.43	2219.37	234.92	250.8	0.05	848.5	1548.62
630	54	19	3.85	2.31	628.65	79.63	708.28	34.65	1738.83	528.8	2267.63	245.17	257.91	0.0487	861.64	1574.88
680	45	7	4.4	2.9	684.24	46.24	730.48	35.1	1890.74	306.03	2196.77	209.44	216.84	0.0457	889.44	1629.05
680	54	7	4	4	678.59	87.96	766.55	36	1876.97	582.15	2459.12	258.26	275.85	0.0451	901.03	1653.98
710	54	19	4.09	2.45	709.47	89.57	799.04	36.79	1962.38	594.81	2557.19	267.12	281.45	0.0432	923.84	1700.1
800	54	19	4.34	2.61	798.85	101.65	900.5	39.09	2209.6	675.03	2884.63	301.72	317.98	0.0384	989.12	1833.39
810	45	7	4.8	3.2	814.3	56.3	870.6	38.4	2250.14	372.61	2622.75	242.63	249.95	0.0384	983.55	1820.68
1120	72	19	4.45	1.78	1119.81	47.28	1167.09	44.5	3097.07	313.97	3411.04	308.7	317.68	0.0282	1179.57	2228.93
1160	84	7	4.2	4.2	1163.77	96.98	1260.75	46.2	3221.17	641.85	3863.02	365.62	387.92	0.0268	1219.59	2314.31
1250	84	19	4.35	2.61	1248.39	101.65	1350.04	47.85	3455.38	675.03	4130.41	402.86	419.13	0.025	1266.16	2415.49
1520	84	7	4.8	4.8	1520.03	126.67	1646.7	52.8	4207.25	838.34	5045.59	453.47	491.48	0.0205	1403.81	2722.06

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