ASTM B452 Copper Clad Steel Strand(30％CCS)

Introduction

Product Description
Selecting the Right Size for the Application
When selecting a conductor for a ground grid, it must meet the maximum fault current for the identified duration and meet a minimum breaking load as required by the substation design (typically 5,000 pounds). The key to properly sizing copperclad steel wire is the actual fault current requirement. Often copper is physically oversized to gain the physical strength needed in the application. With Copperclad, the physical strength is inherent to the product so the primary consideration is electrical. Table 2 below compares the ampacity ratings of copper and Copperclad Steel Wire which allows the user to visually select the Copperclad equivalent. For example:
Requirements: The equivalent to 4/0 copper per the IEEE Fusing Chart is 19#9 40%. A typical maximum fault current for a distribution substation is ~18 kA at 30 cycles. Most engineers upsize to 4/0 copper in order to meet the mechanical strength requirement.
AFL solution: A 2/0 copper or 7#6 Copperclad SteelWire conductor will meet this requirement instead of the larger size 4/0 copper commonly used for ground grids. The conductor safety margin for 7#6 Copperclad Steel Wire is 30% and meets the fault current and mechanical strength requirements.

Technical parameter

CONDUCTOR SIZE	STRANDS	STRAND DIAMETER		OVERALL DIAMETER		AREA		FAULT CURRENT AMPSAT 0.5SEC.	WEIGHT/LENGTH		WIRE RESISTANCE		MIN.BREAK LOAD


AWG		IN.	MM	IN.	MM	CMIL	(MM^2)		LBS/KFT	KG/KM	Ω/KFT	Ω/KM	LBF	KGF
19#4	19	0.2043	5.19	1.022	25.95	793,000	401.8	92.96	2346.4	3491.8	0.0451	0.1479	24474	11101
19#5	19	0.1819	4.62	0.91	23.1	628,700	318.6	73.7	1860.1	2768.1	0.0569	0.1866	19402	8800
19#6	19	0.162	4.11	0.81	20.57	498,600	252.6	58.45	1475.3	2195.5	0.0717	0.2352	15389	6980
19#7	19	0.1443	3.67	0.722	18.33	395,600	200.5	46.38	1170.6	1742	0.0904	0.2965	12210	5538
19#8	19	0.1285	3.26	0.643	16.32	313,700	159	36.78	928.3	1381.4	0.114	0.3739	9682	4392
19#9	19	0.1144	2.91	0.572	14.53	248,700	126	29.15	735.7	1094.9	0.1438	0.4717	7674	3481
4/0	19	0.1055	2.68	0.528	13.4	211,500	107.2	24.79	625.7	931.1	0.1691	0.5547	6526	2960
19#10	19	0.1019	2.59	0.51	12.94	197,300	100	23.13	583.7	868.7	0.1812	0.5946	6089	2762
7#4	7	0.2043	5.19	0.613	15.57	292,200	148.1	34.25	861	1281.4	0.1219	0.3999	9017	4090
7#5	7	0.1819	4.62	0.546	13.86	231,600	117.4	27.15	682.6	1015.8	0.1538	0.5045	7148	3242
7#6	7	0.162	4.11	0.486	12.34	183,700	93.1	21.54	541.4	805.7	0.1939	0.636	5670	2572
7#7	7	0.1443	3.67	0.433	11	145,800	73.9	17.09	429.6	639.3	0.2443	0.8016	4498	2040
2/0	7	0.1379	3.5	0.414	10.51	133,100	67.4	15.6	392.3	583.8	0.2675	0.8777	4108	1863
7#8	7	0.1285	3.26	0.386	9.79	115,600	58.6	13.55	340.6	506.9	0.3081	1.0108	3567	1618
1/0	7	0.1228	3.12	0.368	9.35	105,600	53.5	12.37	311.1	463	0.3374	1.1069	3258	1478
7#9	7	0.1144	2.91	0.343	8.72	91,610	46.4	10.74	270	401.8	0.3887	1.2754	2827	1282
7#10	7	0.1019	2.59	0.306	7.76	72,690	36.8	8.52	214.2	318.8	0.49	1.6075	2243	1017
3#4	3	0.2043	5.19	0.44	11.18	125,200	63.4	14.68	368.3	548.1	0.2838	0.9313	4079	1850
3#5	3	0.1819	4.62	0.392	9.96	99,260	50.3	11.64	292	434.5	0.3581	1.1747	3234	1467
3#6	3	0.162	4.11	0.349	8.86	78,730	39.9	9.23	231.6	344.6	0.4514	1.4811	2565	1163
3#7	3	0.1443	3.67	0.311	7.9	62,470	31.7	7.32	183.7	273.4	0.569	1.8667	2035	923
3#8	3	0.1285	3.26	0.277	7.04	49,540	25.1	5.81	145.7	216.8	0.7175	2.354	1614	732
3#9	3	0.1144	2.91	0.247	6.27	39,260	19.9	4.6	115.5	171.9	0.9053	2.97	1279	580
3#10	3	0.1019	2.59	0.22	5.59	31,150	15.8	3.65	91.6	136.3	1.141	3.7433	1015	460
#2AWG	7	0.086	2.18	0.258	6.55	51,770	26.2	6.07	152.6	227.1	0.6879	2.2568	1614	732
#4AWG	7	0.068	1.73	0.204	5.18	32,370	16.4	3.79	95.4	142	1.1002	3.6097	1009	458
#2AWG	1	0.2576	6.54	0.258	6.54	66,370	33.6	7.78	193.7	288.2	0.5313	1.743	2276	1032
#4AWG	1	0.2043	5.19	0.204	5.19	41,740	21.2	4.89	121.8	181.2	0.8448	2.7716	1431	649
#6AWG	1	0.162	4.12	0.162	4.12	26,250	13.3	3.08	76.6	114	1.3432	4.4069	900	408
#8AWG	1	0.1285	3.26	0.129	3.26	16,510	8.4	1.94	48.2	71.7	2.1354	7.0059	566	257
#9AWG	1	0.1144	2.91	0.114	2.91	13,090	6.6	1.53	38.2	56.8	2.6942	8.8393	449	204
#10AWG	1	0.1019	2.59	0.102	2.59	10,380	5.3	1.22	30.3	45.1	3.3957	11.1409	356	162