Product Details

Specifications

Diameter Expanded Hollow Wire for Electric Station
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Diameter Expanded Hollow Wire for Electric Station

Product standard: Enterprise standard

This product is diameter expanded hollow wire used for internal aerial electricity transmission and distribution line with 330kV and over.

Type

Type	Name
LGJKK	Diameter expanded hollow steel-core aluminum wire
LGSJK	Sparse stranded diameter expanded steel-core aluminum wire

Construction

Diameter expanded hollow wire

Type			LGJKK-600	LGJKK-900	LGJKK-1400
Nominal outer diameter of conductor mm			50.60	49.00	57.00
Nominal cross section mm²			600	900	1400
Calculated cross section mm²	Al		653.60	906.20	1387.60
	Steel		54.50	84.80	106.00
	Amount		708.10	991.00	1493.60
Construction Number diameter mm	Support center metallic flexible pipe	Outer diameter	37.0₀^-0.5	27.0₀^-0.5	27.0₀^-0.5
	Support center metallic flexible pipe	Inner diameter	31.0±0.5	21.0±0.5	21.0±0.5
	Inner layer	Al	30/3.4	18/3.0	15/3.0
	Inner layer	Steel	6/3.4	12/3.0	15/3.0
	Second inner layer Al		/	/	28/4.0
	Second Outer layer Al		/	28/4.0	34/4.0
	Outer layer Al		42/3.4	34/4.0	40/4.0
D.C. resistance 20℃Ω/km			0.04500	0.03247	0.02139
Current carrying 70℃A			900	1030	1300
Construction weight kg/km			2841	3705	5264

Sparse stranded diameter expanded wire

Type		LGSJK-630	LGSJK-800	LGSJK-1000	LGSJK-1250	LGSJK-1400
Nominal outer diameter of conductor mm		48.0	49.0	51.0	52.0	51.0
Nominal cross section mm²		630	800	1000	1250	1400
Calculated cross section mm²	Al	635.43	813.32	1001.27	1258.99	1399.40
	Steel	152.80	152.80	152.80	152.80	134.29
	Amount	788.23	966.12	1154.07	1141.79	1533.69
Construction Number diameter mm	Center steel	19/3.20	19/3.20	19/3.20	19/3.20	19/3.00
	Inner layer	4/4.55	4/4.60	4/4.55	4/4.60	13/4.50
	Second inner layer Al	4/4.55	4/4.60	4/4.55	18/4.47	19/4.50
	Second Outer layer Al	12/3.70	24/3.80	27/4.30	26/4.47	25/4.50
	Outer layer Al	35/3.70	36/3.80	33/4.30	32/4.47	31/4.50
Calculated compositive tensile force KN		244	268	295	332	338
Flexible modulus KN/mm²		68.50	65.20	62.50	60.05	54.68
Wire expansible modulus10/℃		16.80	17.20	18.10	22.50	20.39
D.C. resistance 20℃ Ω/km		0.04704	0.03654	0.02956	0.02314	0.02121
Current carrying 70℃ A		820	940	1040	1150	1280
Construction weight kg/km		3039	3529	4051	4724	4970

Technical conditions

1. The cable should be twisted closely and tidy and should not appear broken strand, lacking of strand, loosing strand and overlapped phenomena. But if the surface of cable exists in local light mechanical damage, etc defect, it can also be recognized as salable product.
2. Single wire permits to weld. The welded place of each single wire should be smooth and round. The tensile strength at welded place for hard aluminum should not be less than 7.5 kgf/ mm²and for steel wire electroplated zinc should not be less than 80 kgf/ mm².
3. The make length of cable is not less than 250mm, shortage length more than 20m may be delivered before particularly case. Delivered special requirement to be discussed between both sides.