Copper Clad Aluminum Busbar

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Copper Clad Aluminum Busbar

Product Introduce

Product Use

Product Performance

Technical Parameter

Product Consulting

Product Introduce

Copper-aluminum composite bar is a bimetallic conductive bar of copper-coated aluminum, which is a "new conductor material". It not only has excellent conductive properties of copper, but also has the characteristics of low density of aluminum. It is a "strategic emerging industry" supported by China.
The copper-aluminum composite bars produced by our company are different from the traditional production processes such as hydrostatic extrusion, rolling and pressing, cladding and welding, and sleeve rolling, etc. Instead, the original "horizontal continuous casting and efficient molding - rolling" technology is adopted to make the copper-aluminum composite bar bond interface reach a certain metallurgical bond, enhance the shear strength of the two metal interfaces, and ensure the mechanical and electrical properties of the products. Improve product stability.

Product Use

1. Electrical Equipment Manufacturing: Mainly Including Low Voltage, Medium Voltage, High Voltage Power Distribution, Busbar System, Rectifier, Motor Winding, Etc.;
2. Crane Rail Supply System, Vacuum Switchgear, Generator Set, Substation, Bimetallic Connector In Aluminum Foil Wound Transformer, Etc.;
3. Wind Power, Solar Photovoltaic Field: Mainly Including Reactor, Inverter, Etc.;
4. Railway, Aerospace, High-speed Ferry, Etc.

Product Performance

1. Unique composite properties, copper-aluminum interface is metallurgical bonding, product performance is high, and it has the characteristics of copper conductivity and low aluminum density;
2. High interface bonding strength, excellent conductivity, excellent mechanical processing performance;
3. The copper layer thickness is large and adjustable, suitable for transmitting large currents;
4. Light weight, convenient transportation and installation;
5. Obvious economic benefits: saving copper resources and reducing production costs.

Technical Parameter

Comparison table of physical properties of different products at room temperature

Name	Unit	Copper Bar		Copper-aluminum Composite Bar (VPcu=25%)		Aluminum Bar
Name	Unit	Hard Y	Soft state R	Hard Y	Soft R	Hard Y	Soft R
Tensile strength	MN/m2	-	≥206	≥170	≥115	≥118	≥68.6
Elongation	%	-	≥35	≥3	≥28	≥3	≥20
Maximum Resistivity	Ω·mm2/m	0.01777	0.017241	0.02548	0.02498	0.029	0.028264
Minimum Volume Conductivity	%IACS	97	97	67.7	69	59.5	61
Density	g/cm3	8.89	8.89	4.25	4.25	2.703	2.703
Linear Coefficient of Thermal Expansion	1/℃	17×1010-6	17×1010-6	22.5×1010-6	22.5×1010-6	23×1010-6	23×1010-6
Temperature Coefficient of Resistance	1/℃	3.81×1010-3	3.93×1010-3	3.9×1010-3	4.0×1010-3	3.93×1010-3	4.03×1010-3

Composite Row Width, Thickness Allowable Deviation Reference Table

Width /mm	Width Tolerance /mm	Thickness /mm	Thickness Tolerance /mm
≤30.00	±0.50	＞3.00～6.00	±0.10
＞30.00～100.00	±0.80	＞6.00～10.00	±0.15
＞100.00	±1.20	＞10.00	±0.20

Reference Table Of Room Temperature Physical Properties Of Composite Row

Coating Volume Ratio %	Status	Density g/cm3	Interface Bonding Strength mpa	Tensile Strength mpa	Elongation %	Maximum Dc Resistivity ω · Mm2/m	Volume Conductivity Not Less Than %iacs
20	Hard Y	3.94	≥40	≥160	≥3	0.02596	66.4
20	Soft state R	3.94	-	≥110	≥25	0.0255	67.6
25	Hard Y	4.25	≥40	≥170	≥3	0.02548	67.7
25	Soft state R	4.25	-	≥115	≥28	0.02498	69
30	Hard Y	4.56	≥40	≥180	≥3	0.02477	69.6
30	Soft state R	4.56	-	≥120	≥30	0.02424	71.1

Single Product Ac Current Carrying Reference Table

The AC carrying capacity of a single product is shown in the following table, and the DC carrying capacity should be appropriately increased by reference to the following table.

The data in the following table are indoor test data, and the influence of outdoor factors such as wind speed is not considered.

The data in the table is the AC current carrying capacity of the sample standing without coating. When the specimen is laid flat, width ≤ When 60.00mm, the data in the table should be multiplied by 0.95; When the width is greater than 60.00mm, the data in the table should be multiplied by 0.92.

The product works stably in an environment of 25 ° C, and the AC carrying capacity when the temperature rises to 50K, 65K and 75K.

Specification（b×h）mm×mm	Current Carrying Capacity (25℃) /A
	VPCu=20%			VPCu=25%			VPCu=30%
	50K	65K	75K	50K	65K	75K	50K	65K	70K
15.00×4.00	193	213	222	196	210	225	200	213	229
20.00×4.00	1250	276	288	254	273	293	259	277	298
25.00×4.00	310	341	355	314	339	363	321	345	370
30.00×4.00	326	361	375	336	362	387	347	372	399
30.00×5.00	425	453	476	438	453	489	450	466	503
30.00×6.00	486	538	562	499	539	579	514	554	595
30.00×8.00	579	643	678	596	644	697	613	662	717
30.00×10.00	638	711	724	658	712	745	676	733	767
40.00×4.00	453	498	517	465	500	532	479	513	547
40.00×5.00	538	604	633	554	605	652	570	622	670
40.00×6.00	612	677	708	630	679	728	649	698	750
40.00×8.00	725	805	847	746	806	873	767	829	897
40.00×10.00	790	894	949	814	896	977	837	921	1005
50.00×5.00	665	735	765	684	736	788	703	758	810
50.00×6.00	755	836	872	777	836	898	799	861	923
50.00×8.00	891	989	1042	918	990	1072	944	1019	1103
50.00×10.00	969	1061	1107	998	1061	1139	1026	1092	1172
60.00×5.00	759	856	892	781	858	918	804	882	945
60.00×6.00	861	952	995	886	953	1025	911	980	1053
60.00×8.00	1011	1123	1182	1041	1124	1216	1070	1156	1252
60.00×10.00	1093	1215	1279	1125	1218	1318	1157	1253	1355
80.00×6.00	1081	1197	1250	1113	1198	1284	1145	1232	1323
80.00×8.00	1265	1405	1479	1302	1407	1523	1340	1448	1566
80.00×10.00	1362	1505	1583	1402	1507	1629	1442	1550	1676
100.00×6.00	1283	1419	1483	1320	1422	1527	1358	1462	1571
100.00×8.00	1504	1669	1758	1548	1672	1811	1593	1719	1862
100.00×10.00	1620	1790	1883	1668	1793	1938	1716	1844	1993
120.00×8.00	1740	1932	2035	1791	1935	2095	1842	1990	2154
120.00×10.00	1890	2090	2197	1946	2094	2261	2002	2153	2326
140.00×8.00	1996	2216	2333	2054	2218	2402	2114	2282	2471
140.00×10.00	2199	2447	2556	2264	2452	2631	2329	2522	2706
160.00×8.00	2223	2468	2599	2289	2472	2660	2354	2543	2753
160.00×10.00	2449	2718	2846	2521	2730	2929	2594	2809	3014
180.00×8.00	2465	2736	2882	2538	2740	2967	2611	2819	3053
180.00×10.00	2717	3023	3157	2796	3029	3250	2877	3116	3343
180.00×12.00	2816	3156	3297	2902	3165	3398	2898	3258	3498
200.00×8.00	2701	2998	3157	2784	3007	3255	2866	3095	3330
200.00×10.00	2980	3317	3463	3069	3324	3566	3159	3422	3671
200.00×12.00	3093	3464	3627	3787	3474	3734	3282	3577	3840

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