GAPPED (SUPER) THERMAL RESISTANT ALUMINUM ALLOY CONDUCTORS, EXTRA HIGH TENSILE STRENGTH STEEL REINFORCED (GTACSR/GSTACSR)

LS Cable & System overhead wire is composed of ACSR and overhead ground wire. They are normally installed on steel towers, and recently the usage of high-capacity conductors for high-capacity transmission among power cables is increasing

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Construction

GAP conductor consists of Extra High Tensile Strength Galvanized Steel Wires in the center, (super) thermal - resistant aluminum alloy wires in conductor part and thermal-resistant grease in ‘GAP’ between steel core and aluminum inner layer

To maintain ‘GAP’ between steel core and aluminum inner layer; the aluminum inner layer shall be trapezoidal shaped, whereas outer aluminum layer could be round shaped or trapezoidal shaped in case of alternative compact designs.

Core (EST) : Extra High Tensile Strength Galvanized Steel Wire

Conductor (TAI, STAL): (Super) Thermal Resistant Aluminum Alloy Wire

The gap between steel cores and inner aluminum layers shall be filled with heat special resistant grease.

•Provide water proofing

•Protection for galvanizing coating on the steel core

•Lubrication between the steel core and aluminum layers

Characteristics

Double the Current-carrying Capacity of the same size ACSR

No limitation for application area : Heavy wind S' snows galloping area

Equivalent Sag-Tension Properties to conventional ACSR

No Modification & Reinforcement on Existing Tower

Special Installation Method S-Tools required

Reduced Design Time and Cost

Standard

IEC61Q89, IEC62219, IEC 60888, IEC 62004

Application

GAP conductor, i.e. GTACSR and GSTACSR is normally used to up-rate an existing overhead transmission lines by simply replacing the existing conductor without tower modification or reinforcement.

Size	Cross-Section Area			Conductor Construction			Approx. Overall diameter	Approx. Overall weight	Maximum DC resistance at 20oC	Modulus of Elasticity	Coefficient of Linear Expansion	Minimum breaking load	Current Carrying Capacity
	(S)TAL	EST	Total	EST	(S)TAL-TW	(S)TAL				EST	EST		GTACSR (120^oC)	GSTACSR (210^oC)
mm²	mm²	mm²	mm²	No./mm	No./mm	No./mm	mm	kg/km	Ω/km	kgf/ mm²	x10-6/^oC	kN	A	A
150	157.5	21.99	179.5	7/2.0	10/2.82 14/2.94		16.4	624	0.1874	21,000	11.5	6,030	699	843
180	179.6	24.25	203.9	7/2.1	9/3.03	15/3.12	18.44	704	0.164	21,000	11.5	6,660	773	934
200	197.6	31.67	229.3	7/2.4	11/3.17	18/2.8	19.7	813	0.149	21,000	11.5	8,160	827	1,001
240	247.9	31.67	279.6	7/2.4	10/3.69 15/3.46		20.6	954	0.1188	21,000	11.5	8,820	939	1,137
290	293.1	37.17	330.3	7/2.6	10/3.85	16/3.75	23.3	1,124	0.1005	21,000	11.5	10,370	1,059	1,285
330	329.7	52.83	382.5	7/3.1	11/3.98	17/3.8	25.1	1,350	0.0893	21,000	11.5	13,450	1,149	1,396
370	370.6	40.08	410.7	7/2.7	9/4.57	15/4.35	26	1,363	0.0795	21,000	11.5	11,950	1,230	1,496
410	414	49.48	463.5	7/3.0	10/4.58	15/4.6	27.6	1,563	0.0711	21,000	11.5	14,090	1,324	1,612
480	479.6	37.17	516.8	7/2.6	10/3.85	17/3.4 23/3.4	29.3	1,640	0.0614	21,000	11.5	13,140	1,418	1,728
540	540.9	52.83	593.7	7/3.1	11/3.98	18/3.5 24/3.5	31.5	1,939	0.0545	21,000	11.5	16,660	1,539	1,877