Premium Steel Core Aluminum Stranded Wire Overhead Cable

Widely Use:

Long-distance high-voltage power transmission

LGJ overhead cables can effectively reduce power loss and ensure the economy and efficiency of long-distance power transmission.

Transmission projects with large spans and complex terrains

In large spans across rivers, valleys, highways and complex terrains, the high-strength steel core structure of LGJ cables can withstand external forces such as wind and ice to ensure line safety.

Renewable energy power generation and grid connection

Suitable for power grid connection and transmission of wind and solar power plants, LGJ overhead cables have high conductivity and corrosion resistance in harsh environments, ensuring efficient transmission of power from power stations to the main grid.

Coastal and highly corrosive environments

LGJ cables have excellent corrosion resistance and are suitable for installation in coastal, humid or salt fog-heavy environments to maintain long-term stable power transmission performance.

Urban and industrial distribution networks

In urban expansion, power grid upgrades, and industrial heavy-load areas, LGJ overhead cables can meet large-capacity power transmission needs with their high current carrying capacity and compact design, helping to efficiently expand the power network.

Advantage:

More compact aluminum wire arrangement

The wedge structure can effectively reduce the gaps, reduce the diameter of the overall conductor or increase the cross-sectional area of the conductive aluminum under the same diameter while maintaining the same conductive cross-sectional area, thereby further improving the transmission efficiency of the conductor.

Excellent conductivity

LGJ overhead cables use high-purity 1350-H19 aluminum. The high conductivity is especially advantageous in long-distance power transmission applications, which significantly reduces the cost of power transmission and improves transmission efficiency.

High-strength steel core structure

The central steel core of the LGJ overhead cable is carefully designed and twisted with galvanized steel wires. The steel core has excellent tensile strength.

Technical Data

Nominal cross section Aluminum/Steel （mm)		Number of roots/diameter（mm)		Cable outer diameter	DC resistance	Calculate the breaking force	Calculate weight
Aluminum	Steel	Aluminum	Steel	（mm）	（≤Ω/km）	（N）	（ kg/km）
150	8	18/3.20	1/3.20	16	0.1989	32860	461
150	20	24/2.78	7/1.85	16.67	0.198	46630	549
150	25	26/2.70	7/2.10	17.1	0.1939	54110	601
150	35	30/2.50	7/2.50	17.5	0.1962	65020	676
185	10	18/3.60	1/3.60	18	0.1572	40880	584
185	25	24/3.15	7/2.10	18.9	0.1542	59420	706
185	30	26/2.98	7/2.32	18.88	0.1592	64320	733
185	45	20/2.80	7/2.80	19.6	0.1564	80190	848
210	10	18/3.80	1/3.80	19	0.1411	45140	651
210	25	24/3.33	7/2.22	19.98	0.138	65990	789
210	35	26/3.22	7/2.50	20.38	0.1363	74250	854
210	50	30/2.98	7/2.98	20.86	0.1381	90830	961
240	30	24/3.60	7/2.40	21.6	0.1181	75620	922
240	40	26/3.42	7/2.66	21.66	0.1209	83370	964
240	55	30/3.20	7/3.20	22.4	0.1198	102100	1108
300	15	42/3.00	7/1.67	23.01	0.09724	68060	940
300	20	45/2.93	7/1.95	23.43	0.0952	75680	1002
300	25	48/2.85	7/2.22	23.76	0.09433	83410	1058
300	40	24/3.99	7/2.66	23.94	0.09614	92220	1133
300	50	26/3.83	7/2.98	24.26	0.09636	103400	1210
300	70	30/3.60	7/3.60	25.2	0.09463	128000	1402
400	20	42/3.51	7/1.95	26.91	0.07104	88850	1286
400	25	45/3.33	7/2.22	26.64	0.0737	95940	1295
400	35	48/3.22	7/2.50	26.82	0.07389	103900	1349
400	50	54/3.07	7/3.07	27.63	0.07232	123400	1511
400	65	26/4.42	7/3.44	28	0.07236	135200	1611
400	95	30/4.16	19/2.50	29.14	0.07087	171300	1860
500	35	45/3.75	7/2.50	30	0.05812	119500	1642
500	45	48/3.60	7/2.80	30	0.05912	128100	1688
500	65	54/3.44	7/3.44	30.96	0.0576	154000	1897
630	45	45/4.20	7/2.80	33.6	0.04633	148700	2060
630	55	48/4.12	7/3.20	34.32	0.04514	164400	2209
630	80	54/3.87	19/2.32	34.82	0.04551	192900	2388
800	55	45/4.80	7/3.20	38.4	0.03547	191500	2690
800	70	48/4.63	7/3.60	38.58	0.03574	207000	2791
800	100	54/4.33	19/2.60	38.98	0.03635	241100	2991
10	2	6/1.50	1/1.50	4.5	2.706	4120
16	3	6/1.85	1/1.85	5.55	1.779	6130
25	4	6/2.32	1/2.32	6.96	1.131	9290
35	6	6/2.72	1/2.72	8.16	0.823	12630
50	8	6/3.20	1/3.20	9.6	0.5946	16870
50	30	12/2.32	7/2.32	11.6	0.5692	42620
70	10	6/3.80	1/3.80	11.4	0.4217	23390
70	40	12/2.72	7/2.72	13.6	0.4141	58300
95	15	26/2.15	7/1.67	13.61	0.3058	35000
95	20	7/4.16	7/1.85	13.87	0.3019	37200
95	55	12/3.20	7/3.20	16	0.2992	78110
120	7	18/2.90	1/2.90	14.5	0.2422	27570
120	20	26/2.38	7/1.85	15.07	0.2496	41000
120	25	7/4.72	7/2.10	15.74	0.2345	47880
120	70	12/3.60	7/3.60	18	0.2364	98370

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Only some product parameters are displayed. For more product information, please contact us.

The above parameters are for reference only.

Cable Structure

Premium Steel Core Aluminum Stranded Wire Overhead Cable

Features

Excellent corrosion resistance

The aluminum surface of the LGJ overhead cable has a natural oxide film, which has a certain corrosion resistance, while the steel core is galvanized. Whether in highly corrosive environments such as salt spray and humidity, or in conventional outdoor conditions, the LGJ overhead cable can ensure a longer service life and lower maintenance costs for the transmission line.

Flexible application combination

LGJ overhead cables can use a combination of multi-layer aluminum and steel strands according to power transmission needs to meet the transmission needs of different scenarios. This flexibility allows LGJ overhead cables to have stronger adaptability in complex power transmission environments and can provide efficient and economical solutions for various power transmission scenarios.

Conductor Material: Aluminum stranded wire (AAC)

Rated voltage: 0.6/1kV or 10kV

Maximum operating temperature: 70℃-90℃

Maximum short-circuit temperature of conductor: 160℃ (short-circuit time does not exceed 5 seconds)

Laying temperature: not less than -20℃

Standard certification: IEC 61089, BS 215, GB/T 1179

Test voltage:

Aluminum stranded wire overhead cables with rated voltage of 0.6/1kV should withstand a voltage test of 3500V for 1 minute.

Aluminum stranded wire overhead cables with rated voltage of 10kV should withstand a voltage test of 18kV (12kV for light type) for 1 minute.

Production

Production Equipment

Cantilever Single Twister

Finished Cables

Fork Type Stranding Machine

Frame Type Stranding Machine

Plastic Extruder

Wire Braiding Machine

Wire Storage Device

Experimental Equipment

Projects

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Case Study on Optimization of Mobile Equipment Cable Solution in Open-Pit Mine

The mobile equipment cables in an open-pit coal mine are often damaged due to frequent bending, dragging, and rolling, resulting in frequent equipment shutdowns, which seriously affects production efficiency. Read More

Cable use Cases in Crude Oil Depots

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Shenxing Cable: Laying the Foundation for Smart Highways

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Cable Solutions for Offshore Wind Farms

A coastal area plans to build offshore wind farms on a large scale to meet the growing demand for clean energy. However, the harsh offshore environment, high salt spray, strong winds and other factors have placed extremely high demands on the performance of cables. Read More

COMMON QUESTIONS

SHENXING Cable Service FAQs

Want to learn more? Check out our electrical cable most frequently asked questions.

What is LGJ overhead cable?

LGJ overhead cable is a steel core aluminum stranded wire, which uses aluminum wire as the conductive material and is twisted around a galvanized steel core. It combines the good conductivity of aluminum and the high strength of the steel core, and is often used in high-strength, long-distance overhead transmission lines.

What are the main advantages of LGJ overhead cable?

The main advantages of LGJ overhead cable include compact structural design, excellent conductivity, high-strength steel core structure, good corrosion resistance, and flexible multi-layer aluminum-steel combination, making it suitable for a variety of complex power transmission environments.

What are the benefits of the wedge-shaped aluminum stranded wire design of LGJ overhead cable?

The wedge-shaped aluminum stranded wire design makes the aluminum wires more closely arranged and reduces the gaps. This can increase the conductive aluminum cross-sectional area at the same diameter, and reduce the overall diameter while maintaining the same cross-sectional area, thereby improving transmission efficiency and reducing overall weight.

What application scenarios are LGJ overhead cables suitable for?

LGJ overhead cables are very suitable for long-distance, high-strength transmission lines, especially in scenarios with high requirements for conductor strength and durability, such as large spans, high tension, and harsh environments.

Can LGJ overhead cables withstand harsh weather conditions?

Yes. The steel core design of LGJ overhead cables has high tensile strength and can withstand external forces such as wind loads and ice loads, and is suitable for stable operation under harsh weather conditions.

What is the corrosion resistance of LGJ overhead cables?

The aluminum surface of LGJ overhead cables has a natural oxide film, which provides a certain degree of corrosion resistance; at the same time, the steel core is galvanized, which further enhances the corrosion resistance and can be used for a long time in corrosive environments such as salt spray and moisture.

What is the conductivity of LGJ overhead cables?

LGJ overhead cables use high-purity aluminum as a conductive material, which has excellent conductivity and can effectively reduce energy loss in power transmission. It is particularly suitable for long-distance power transmission and can significantly reduce power transmission costs.

What is the steel core structure of LGJ overhead cables?

The steel core of the LGJ overhead cable is usually made of 7, 19 or more strands of galvanized steel wires twisted together and located in the center of the conductor. The steel core enhances the mechanical strength of the conductor, allowing it to withstand greater tension and external forces.

How long is the service life of the LGJ overhead cable?

Under normal and well-maintained conditions, the service life of the LGJ overhead cable can reach 20 to 30 years, or even longer. The corrosion resistance of the galvanized steel core and aluminum also helps to extend the service life of the conductor.

What are the common specifications of the LGJ overhead cable?

LGJ overhead cables have a variety of aluminum wire and steel core layer numbers and cross-sectional area specifications to choose from. Users can choose different combinations and sizes of conductors according to power transmission needs to meet the power transmission needs of different scenarios.