Home > Wires and Cables > Bare conductor > ACSR

ALUMINUM CONDUCTOR ALUMINUM CLAD STEEL REINFORCED（ACSR/AW）

The ACSR/AW conductor is formed by several wires of Aluminium and Aluminum-clad steel, stranded in concentric layers.

Send Email Chat Now

Construction

Technical Specifications

Quality Control

Application

Construction

Aluminum Conductor Aluminum Clad Steel Reinforced

Standard

ASTM B549, GB/T 1179, AS 3607

Technical Specifications

ALUMINUM CONDUCTOR ALUMINUM CLAD STEEL REINFORCED（ACSR/AW）

ASTM CONDUCTOR SIZES-METRIC INITS

ASTM CONDUCTOR SIZES-METRIC UNITS

HIGH MECHANICAL STRENGTH

Standard sizes to AS 3607

GB-T 1179 -2008

Code Word	Nominal Size		Diameter(mm)					AL	Weight2 (kg/km) A W	Total	Rated Strength2 kg	Resistance Ohms/km
	Nominal Size		Diameter(mm)									Resistance Ohms/km
	(AWG or KCM)	(mm²)	Stranding (Al/AW)	Al	Individual Wires A W	A W Core	Complete Cable					DC@ 20℃	AC@ 75℃	Current Rating (Amps)


Swan/AW	4	21.15	6/1	2.118	2.118	2.12	6.36	58	23.2	81.2	807	1.285	1.565	145
Swanate/AW	4	21,15	7/1	1.961	2.614	2.61	6.54	58	35.4	933	1034	1.251	1.523	148
Sparrow/AW	2	33.63	6/1	2.672	2.672	2.67	8.02	92.3	37	129.3	1252	0.8078	0.9831	194
Sparate/AW	2	33.63	7/1	2.474	3.299	3.3	8.25	92.3	56.3	148.6	1592	0.7861	0.957	198
Robin/AW	1	42.41	6/1	3	3	3	9	116.3	46.6	162.9	1565	0.6398	0.7786	225
Raven/AW	1/0	53.51	6/1	3.371	3.371	3.37	10.11	146.9	58.8	205.7	1928	0.5076	0.618	260
Quail/AW	2/0	67.44	6/1	3.782	3.782	3.78	11.35	184.9	74	258.9	2327	0.4012	0.4902	301
Pigeon/AW	3/0	85.03	6/1	4.247	4.247	4.25	12.74	233.1	93.4	326.5	2858	0.3198	0.3897	347
Penguin/AW	4/0	107.2	6/1	4.77	4.77	4.77	14.31	294.1	117.8	411.9	3488	0.2535	0.3091	402
Waxwing/AW	266.8	135.1	18/1	3.091	3.091	3.09	15.46	372.4	49.4	421.8	3093	0.2088	0.2551	451
Partridge/AW	266.8	135.1	26/7	2.573	2.002	6	16.3	374.5	145.7	520.2	4899	0.2024	0.2474	465
Ostrich/AW	300	152	26/7	2.728	2.121	6.36	17.27	421	163.6	584.6	5488	0.1801	0,2202	500
Merlin/AW	336.4	170.4	18/1	3.472	3.472	3.47	17.36	469.8	62.4	532.2	3874	0.1655	0.2026	522
Linne/AW	336.4	170.4	26/7	2.888	2.245	6.74	18.29	471.8	183.4	655.2	6123	0.1607	0.1965	537
Oriole/AW	336.4	170.4	30/7	2.69	2.69	8.07	18.83	473.4	263.4	736.8	7575	0.1573	0.1923	547
Chickadee/AW	397.5	201.4	18/1	4	3.774	3.77	18.87	555.2	73.7	628.9	4436	0.14	0.1716	580
Bran/AW	397.5	201.4	24/7	3,269	2.179	6.54	19.61	558	172.8	730.8	6396	0.1373	0.1681	592
Ibis/AW	397.5	201.4	26/7	3.139	2.441	7.32	19.88	557.5	216.7	774.3	7167	0.136	0.1664	597
Lark/AW	397.5	201.4	3017	2.924	2.924	8.77	20.46	559.2	311.2	870.4	8890	0.1331	0.1629	608
Pelican/AW	477	241.7	18/1	4.135	4.135	4.14	20.68	666.4	88.5	754.9	5216	0.1167	0.1425	651
Flicker/AW	477	241.7	24/7	3.581	2.388	7.16	21.49	669.8	207.4	8771	7575	0.1144	0.1402	663
Hawk/AW	477	241.7	26/7	3.439	2.675	8.02	21.78	669.1	260.2	929.3	8573	0.1133	0.1388	669
Hen/AW	477	241.7	3017	3.203	3.203	9.61	22.42	671.2	373.5	1045	10614	0.111	0.1358	682
Osprey/AW	556.5	281.9	18/1	4.465	4.465	4.47	22.33	777.1	103.2	880.3	5987	0.1001	0.123	715
Parakee/AW	556.5	281.9	2417	3.868	2.578	7.73	23.21	781.4	241.8	1023	8754	0.09807	0.1203	731

Code Word	Nominal Size		Diameter(mm)					AL	WEIGHT1 AW	(kg/km) Total	Rated Strength2 kg	Resistance3 Ohms/km


	(AWG or KCM)	(mm²)	Stranding (Al/AW)	Individual AL	Wires AW	AW Core	Complete Cable					DC@ 20℃	AC@ 75℃	Current Rating (Amps)4


Dove/AW	556.5	281.9	26/7	3.716	2.891	8,67	23.54	781.1	303.9	1085	9934	0.09703	0.119	737
Eagle/AW	556.5	281.9	30/7	3.459	3.459	10.38	24.22	783.1	435.8	1219	12156	0.09512	0.1165	751
Peacock/AW	605	306.5	24/7	4.034	2.69	8.07	24.2	849.5	263.2	1113	9525	0.09019	0.1108	770
Squab/AW	605	306.5	26/7	3.874	3,012	9.04	24.53	488.7	330.1	1179	10705	0.09097	0.1096	777
Teal/AW	605	306.5	30/19	3.607	2.164	10.82	25.25	851.2	463.3	1314	12927	0.08767	0.1074	791
Kingbird/AW	636	322.2	18/1	4.775	4.775	4.78	23.88	888.6	118	1007	6804	0.0875	0.1078	778
Rook/AW	636	322.2	24/7	4.135	2.756	8.27	24.81	892.9	276.3	1169	9979	0.08583	0.1055	794
Grosbeak/AW	636	322.2	26/7	3.973	3.089	9.27	25.16	892.7	347	1240	11249	0.08491	0.1043	801
EgreYAW	636	322.2	30/19	3.698	2.22	11.1	25.89	894.9	487.5	1382	13562	0.08337	0.1023	815
Flarningo/AW	666.6	337.7	246	4,234	2.822	8.47	25.4	936.2	289.7	1226	10478	0.08186	0.1007	818
GanneVAW	666.6	337.8	26/7	4.067	3.162	9.49	25.75	935.5	363.7	1299	11793	0.08104	0.09955	825
Starling/AW	715.5	362.5	2617	4.214	3.277	9.83	26.69	1004	390.5	1395	12474	0.07546	0.09284	863
Redwing/AW	715.5	362.5	30/19	3.922	2.352	11.76	27.45	1006	547.3	1554	15150	0.07415	0.0911	878
Cuckoo/AW	795	402.8	24/7	4.623	3.081	9.24	27.73	1116	345.3	1461	12474	0.06867	0.0847	913
Drake/AW	795	402.8	26/7	4.442	3.454	10.36	28.13	1116	434	1550	13834	0.06792	0.08364	922
Tern/AW	795	402.8	45/7	3.376	2.25	6.75	27.01	1116	184.2	1300	9752	0.07005	0.08656	896
Condor/AW	795	402.8	54/7	3.081	3.081	9.24	27.73	1115	344.9	1460	12610	0.06861	0.08457	913
Mallard/AW	795	402.8	30/19	4.135	2.482	12.41	28.95	1119	609.2	1728	16828	0.0667	0.08203	938
Ruddy/AW	900	456	45/7	3.592	2.395	7.19	28.74	1263	208.7	1472	10886	0.06188	0.07643	970
Canary/AW	900	456	54/7	3.279	3.279	9.84	29.51	1263	390.7	1654	14061	0.06067	0.075	986
Rail/AW	954	483.4	45/7	3.698	2.466	7.4	29.59	1339	221.3	1560	11521	0.05837	0.07252	1003
Cardinal/AW	954	483.4	54/7	3.376	3.376	10.13	30.38	1339	414.1	1753	14923	0.05722	0.0709	1022
Oftlan/AW	1033.5	523.6	45/7	3.848	2.565	7.7	30.78	1450	239.4	1689	12292	0.05384	0.06705	1054
Curlew/AW	1033.5	523.6	54/7	3.513	3.513	10.54	31.62	1450	448.4	1898	15921	0.05279	0.0655	1074
Bluejay/AW	1113	563.9	45/7	3.995	2.664	7.99	31.97	1563	258.2	1821	13290	0.05269	0.06251	1103
Finch/AW	1113	563.9	54/19	3,647	2.189	10.95	32.83	1571	474.2	2045	17010	0.04931	0.06134	1121
Bunting/AW	1192.5	604.2	45/7	4.135	2.756	8.27	33.08	1674	276.3	1950	14197	0.04669	0.05852	1150
Grackle/AW	1192.5	604.2	54/19	3.774	2.266	11.33	3398	1682	507.8	2190	18234	0.04603	0.05744	1168
Biftern/AW	1272	644.5	45/7	4.27	2.847	8.54	34.16	1785	294.9	2080	15150	0.0438	0.05507	1196
PheasanUAW	1272	644.5	54/19	3.899	2.339	11.7	35.09	1795	541.4	2336	19232	0.04315	0.05399	1216
Dipper/AW	1351.5	684.8	45/7	4.402	2.934	8.8	35.21	1897	313.1	2210	16102	0.04121	0.05202	1240
Marlin/AW	1351.5	684.8	54/19	4.018	2.41	12.05	36.16	1906	574.8	2481	20457	0.04062	0.05099	1261
Bobolink/AW	1431	725.1	4517	4.529	3.02	9.06	36.25	2008	331.8	2340	17055	0.03891	0.04932	1283
Plover/AW	1431	725.1	54/19	4.135	2.482	12.41	37.23	2019	609.2	2628	21636	0.03835	0.0483	1306
Nuthatch/AW	1510.5	765.3	45/7	4.653	3.101	9.3	37.22	2120	349.9	2470	18008	0.03688	0.0469	1326
Parro/AW	1510.5	765.3	54/19	4.247	2.548	12.74	38.22	2129	642.1	2771	22816	0.03626	0.04579	1351
Lapwing/AW	1590	805.6	45/7	4.775	3.183	9.55	38.2	2233	368.4	2601	18960	0.03507	~04481	1365
Falcon/AW	1590	805.6	54/19	4.359	2.616	13.08	39.23	2243	677.1	2920	24040	0.03452	0.04377	1391
Chukar/AW	1780	9019	84/19	3.698	2.22	11.1	40.69	2512	487.5	2999	22407	0.03191	0.04032	1464
Bluebird/AW	2156	1092.5	84/19	4.069	2.441	12.2	44.76	3041	589.4	3630	26762	0.02585	0.03403	1634
Kiwi/AW	2167	1098	72/7	4.407	2.939	8.82	44.07	3057	313.8	3371	22271	0.02604	0.03464	1613
Thrasher/AW	2312	1171.5	76/19	4.43	2.068	10.34	45.78	3261	422.9	3683	25084	0.02432	0.03257	1680
Joree/AW	2515	1274.4	76/19	4.62	2.156	10.78	47.74	3547	460	4007	27306	0.02236	0.03039	1759

Grouse/AW	80	40.5	8/1	2.54	4.242	4.24	9.32	111.7	93.1	204.9	2218	0.6371	0.7755	227
Petrel/AW	101.8	51.5	12/7	2.339	2.339	7.02	11.7	142.9	199.3	342.1	4495	0.4675	0.5695	281
Minorca/AW	110.8	56.1	1217	2.441	2.441	7.32	12.2	155.6	216.9	372.5	4899	0.435	0.5231	297
Leghorn/AW	134.6	68.2	12/7	2.69	2.69	8.07	13.45	188.9	263.4	452.3	5897	0.3537	0.4307	335
Guinea/AW	159	80.5	12/17	2.924	2.924	8.77	14.62	223.2	311.2	534.4	6940	0.2993	3647	372
Dotterel/AW	176.9	89.6	12/7	3.084	3,084	9.25	15.42	248.2	346.2	594.4	7666	0.2691	0.3277	398
Dorking/AW	190.8	96.6	12/7	3.203	3.203	9.61	16.01	267.8	373.5	641.4	8301	0.2494	0.3038	418
Brahma/AW	203.2	102.9	16/19	2.863	2.482	12.41	18.13	285.3	611.6	896.9	12292	0.2155	0.2623	464
Cochin/AW	211.3	107	1217	3.371	3.371	10.11	16.85	296.6	413.6	710.3	8981	0.2252	0.2744	445

Product code	Stand/wire		Cross sectional area			Nominal O.D. mm	Approximate mass kg/km	Calculated minimum breaking load KN	Final modulus of elasticity GPa	Coefficient of linear expansion /℃x10-6
	Stand/wire		Cross sectional area
	Alum No/mm	Steel No/mm	Alum mm²	Steel mm²	Total mm²
	Alum No/mm	Steel No/mm	Alum mm²	Steel mm²	Total mm²
SKATING	3/1.75	4/1.75	7.2	9.6	16.8	5.3	83	12.3	119	15.3
SOCCER	3/2.50	4/2.50	14.7	19.6	34.3	7.5	171	24.9	119	15.3
SWIMMING	4/3.00	3/3.00	28.3	21.2	49.5	9	218	28.9	106	16.5
TENNIS	4/3.75	3/3.75	44.2	33.1	77.3	11.3	340	42.6	106	16.5
ANGLING	6/2.50	1/2.50	29.5	4.9	34.4	7.5	113	10.6	79	20.1
ARCHERY	6/3.00	1/3.00	42.4	7.1	49.5	9	163	15.1	79	20.1
BASEBALL	6/3.75	1/3.75	66.3	11	77.3	11.3	254	22.3	79	20.1
BOWLS	6/4.75	7/1.60	106	14.1	120	14.3	385	32.7	76	20.6
CRICKET	30/2.50	7/2.50	147	34.4	182	17.5	636	64.4	82	19.4
DARTS	30/3.00	7/3.00	212	49.5	262	21	913	91.6	82	19.4
DICE	30/3.25	7/3.25	249	58.1	307	22.8	1070	106	82	19.4
DIVING	30/3.50	7/3.50	289	67.3	356	24.5	1240	122	82	19.4
GOLF	54/3.00	7/3.00	382	49.5	431	27	1380	120	75	20.6
GYMNASTICS	54/3.25	7/3.25	448	58.1	506	29.3	1620	139	75	20.6
HURDLES	54/3.50	7/3.50	519	67.3	587	31.5	1880	159	75	20.6
LACROSSE	54/3.75	19/2.25	596	75.5	672	33.8	2150	180	74	20.7
RUGBY	54/4.75	19/2.85	957	121	1078	42.8	3450	288	74	20.7

Cross sectional area Al/Al Clad Steel	Specification	The proportion of steel/%	Area/mm²			Number of wires		Diametre of wires/mm		Diametre/mm		Mass per unit length (kg/km)	Rated pulling force/ kN	DC resistance (20℃）/ （Ω/km）
			Al	Al clad steel	Total	Al	Al clad steel	Al	Al clad steel	Al clad steel core	Stranded
			Al	Al clad steel	Total	Al	Al clad steel	Al	Al clad steel	Al clad steel core	Stranded
15/5	16	16.7	17.7	2.96	20.7	6	1	1.94	1.94	1.94	5.82	68.1	9.31	1.7691
25/5	25	16.7	27.7	4.62	32.3	6	1	2.42	2.42	2.41	7.26	106.4	14.54	1.1323
45/5	40	16.7	44.3	7.39	51.7	6	1	3.07	3.07	3.07	9.21	170.2	23.27	0.7077
70/10	63	16.7	69.8	11.6	81.4	6	1	3.85	3.85	3.85	11.6	268	34.79	0.4493
110/20	100	16.7	110	18.5	129	6	1	4.85	4.85	4.85	14.6	425.5	53.38	0.2831
143/5	125	5.6	143	7.94	151	18	1	3.18	3.18	3.18	15.9	445.5	55.97	0.2293
140/20	125	16.3	139	22.6	161	26	7	2.61	2.03	6.08	16.5	532	72.17	0.2279
185/10	160	5.6	183	10.2	193	18	1	3.6	3.6	3.6	18	570.3	69.21	0.1792
180/30	160	16.3	178	28.9	206	26	7	2.95	2.29	6.88	18.7	680.9	92.38	0.1781
230/15	200	5.6	229	12.7	241	18	1	4.02	4.02	4.02	20.1	712.8	86	0.1433
220/36	200	16.3	222	36.1	358	26	7	3.3	2.56	7.69	20.9	851.2	115.4	0.1424
282/30	250	9.8	282	27.7	310	22	7	4.04	2.25	6.74	22.9	961.7	122.25	0.1144
175/45	250	16.3	277	45.2	323	26	7	3.69	2.87	8.6	23.4	1064	141.5	0.114
360/25	315	6.9	359	24.8	384	45	7	3.19	2.12	6.37	25.5	1154.6	146.3	0.0912
350/55	315	16.3	349	56.9	406	26	7	4.14	3.22	9.65	26.2	1340.6	178.38	0.0904
455/30	400	6.9	456	31.5	487	45	7	3.59	2.39	7.18	28.7	1466.1	181.32	0.0718
450/60	400	13	448	58.1	506	54	7	3.25	3.25	9.75	29.3	1621.6	215.22	0.0715
515/35	450	6.9	513	35.4	548	45	7	3.81	2.54	7.62	30.5	1649.4	203.99	0.0638
505/65	450	13	504	65.3	569	54	7	3.45	3.45	10.3	31	1824.3	240.8	0.0636
570/40	500	6.9	570	39.4	609	45	7	4.01	2.68	8.03	32.1	1832.6	226.6	0.0574
560/70	500	13	560	72.6	632	54	7	3.63	3.63	10.9	32.7	2027	259	0.0572
640/45	560	6.9	638	44.1	682	45	7	4.25	2.83	8.5	34	2052.6	253.8	0.0513
630/80	560	12.7	628	79.5	707	54	19	3.85	2.31	11.5	34.6	2261.6	293	0.0511
715/50	630	6.9	718	49.6	767	45	7	4.51	3	9.01	36.1	2309.1	285.58	0.0456
705/90	630	12.7	706	89.4	795	54	19	4.08	2.45	12.2	36.7	2544.3	329.6	0.0454
810/55	710	6.9	809	55.9	865	45	7	4.78	3.19	9.57	38.3	2602.3	321.8	0.0405
800/100	710	12.7	796	101	896	54	19	4.33	2.6	13	39	2867.4	371.5	0.0403
920/40	800	4.3	918	39.7	958	72	7	4.03	2.69	8.06	40.3	2798.8	336.7	0.036
910/75	800	8.3	908	75.6	983	84	7	3.71	3.71	11.1	40.8	3010	369.1	0.0359
900/115	800	12.7	896	114	1010	54	19	4.6	2.76	13.8	41.4	3230.9	418.6	0.0358
1035/45	900	4.3	1033	44.6	1077	72	7	4.27	2.85	8.55	42.7	3148.6	378.9	0.032
1020/85	900	8.3	1021	85.1	1106	84	7	3.9	3.93	11.8	43.2	3386.3	415.2	0.0319
1150/50	1000	4.3	1148	49.6	1197	72	7	4.5	3	9.01	45	3498.5	420.9	0.0288
1290/55	1120	4.2	1286	54.3	1340	72	19	4.77	1.91	9.54	47.7	3912.3	470.1	0.0257
1270/105	1120	8.1	1271	104	1375	84	19	4.39	2.63	13.2	48.3	4202.7	524.73	0.0257
1435/60	1250	4.2	1435	60.6	1495	72	19	5.04	2.01	10.1	50.4	4366.4	524.6	0.0231
1420/115	1250	8.1	1419	116	1535	84	19	4.64	2.78	13.9	51	4690.5	585.6	0.023

Quality Control

ALUMINUM CONDUCTOR ALUMINUM CLAD STEEL REINFORCED（ACSR/AW）

Raw Material Test

NPC has always chosen raw material suppliers who have a good reputation, possess stable supply capabilities and have passed international quality system certifications (such as ISO 9001). And establish a long-term cooperative relationship with it, forming a stable and reliable raw material supply chain.
We will ensure that all raw materials are subject to strict inspection procedures upon entry to the factory, and can only be stored in the warehouse after they have been confirmed to meet the standards.

Process inspection

NPC has strict quality control procedures for each process in the cable production process.
Process documents: Develop detailed process flow and operation instructions to clarify the operating specifications and quality standards of each process.
Equipment calibration: Regularly calibrate key equipment such as wire drawing machines, stranding machines, extruders, and diameter gauges to ensure that the accuracy meets the requirements.
First piece confirmation: Before each batch of production, the first piece is trial-produced to confirm that the process parameters, product dimensions, electrical performance, etc. meet the standards before mass production can be carried out.

Finished Product

Inspectors conduct ex-factory inspections on cables according to relevant standards and corresponding product inspection specifications to ensure that each ex-factory product complies with the process regulations.

Application

The ACSR/AW conductor is used as bare overhead transmission and as primary and secondary distribution cable. ACSR/AW offers strength characteristics similar to ACSR, along with slightly greater ampacityand resistance to corrosion due to aluminum-clad-ding of the steel core wires.

Renewable Energy

Power & Energy Industry

Transport Sector

Real Estate & Construction

Infrastructure & Municipal Industry

Data Centers

Mining and Oil & Gas Industry

Industrial Manufacturer

Technical Advantages

● 30+ years of manufacturing experience
● ISO and UL certified production
● Customized cable and transformer solutions

Conductor Stranded Work Shop

CCV Production Line

CCV production 01

Partical Voltage Test Labtoary

Auto-Winding Machine

Oil Chromatography Test Machine

Auto-core cutting machine

Basic Insulation Level Test Labtoary

Auto Laser Cutting Machine

Automatic Desanding Machine

Automatic Dryer Machine

Product Packaging

Wires and Cables packaging (1)

Wires and Cables packaging (2)

Wires and Cables packaging (3)

Wires and Cables packaging (4)

Wires and Cables packaging (5)

Wires and Cables packaging (6)

Wires and Cables packaging (7)

Wires and Cables packaging (8)

Related Products

ALUMINUM CONDUCTOR STEEL REINFORCED（ACSR）

Aluminium Conductor Steel Reinforced (ACSR) is concentrically stranded conductor with one or more layers of hard drawn aluminium wire on galvanized steel wire core. The core can be single wire or stranded depending on the size. Additional corrosion protection is available through the application of grease to the core or infusion of the complete cable with grease.

Chat Now View More

FAQ From Customers

What are the advantages of power cables and overhead lines?

(1) Reliable operation, because it is installed in a hidden place such as underground, it is less damaged by external forces, has less chance of failure, and the power supply is safe, and it will not cause harm to people;
(2) The maintenance workload is small and frequent inspections are not required;
(3) No need to erect towers;
(4) Help improve power factor.

Which aspects should be considered when choosing the cross section of a power cable?

(1) The long-term allowable working current of the cable;
(2) Thermal stability once short circuited;
(3) The voltage drop on the line cannot exceed the allowable working range.

What are the measures for cable fire prevention?

(1) Use flame-retardant cables;
(2) Use fireproof cable tray;
(3) Use fireproof paint;
(4) Fire partition walls and fire baffles are installed at cable tunnels, mezzanine exits, etc.;
(5) Overhead cables should avoid oil pipelines and explosion-proof doors, otherwise local pipes or heat insulation and fire prevention measures should be taken.

What should be paid attention to during the transportation and handling of cables?

(1) During transportation, loading and unloading, cables and cable reels should not be damaged. It is strictly forbidden to push the cable reels directly from the vehicle. Generally, cables should not be transported and stored flat.
(2) Before transporting or rolling the cable reel, ensure that the cable reel is firm, the cable is wound tightly, the oil pipe between the oil-filled cable and the pressure oil tank should be fixed without damage, the pressure oil tank should be firm, and the pressure indication should meet the requirements.

What inspections should be carried out for the acceptance of cable lines?

(1) The cable specifications should meet the regulations, the arrangement should be neat, no damage, and the signs should be complete, correct and clear;
(2) The fixed bending radius of the cable, the related distance and the wiring of the metal sheath of the single-core power cable should meet the requirements;
(3) The cable terminal and the middle head should not leak oil, and the installation should be firm. The oil pressure of the oil-filled cable and the meter setting should meet the requirements;
(4) Good grounding;
(5) The color of the cable terminal is correct, and the metal parts such as the bracket are completely painted;
(6) There should be no debris in the cable trench, tunnel, and bridge, and the cover should be complete.

How many projects can cable engineering be divided into?

(1) Construction site transportation: including the loading and unloading, transportation and empty vehicle return journey of engineering materials from the warehouse to the construction site.
(2) Local engineering: including road excavation, tunnel, trench construction, etc.
(3) Laying engineering: including laying, intermediate head production, lift cover plate, buried pipe, school tide, tractor head production, etc.
(4) Two-end engineering: including the production and installation of support, suspension bridge and its foundation, the production of terminal heads, the installation of oil pressure and signal devices, and the electrical performance testing of various types.
(5) Stopping works: including the production of oil-filled cable stop heads, the installation of fuel supply tanks, automatic drainage and signal devices, etc.
(6) Grounding engineering: including installation of insulation joints, transposition boxes, protectors, and grounding boxes.

What tests and inspections should be carried out on power cables before laying?

Before laying, check whether the type, specification and length of the cable meet the requirements and whether there is external force damage. Low-voltage cables use a 1000V megohmmeter to remotely measure the insulation resistance, and the resistance is generally not less than 10MΩ. High-voltage cables use a 2500V megger to measure the resistance. Generally not less than 400MΩ.

What are the factors that determine the long-term allowable current carrying capacity of the cable?

(1) The long-term allowable working temperature of the cable;
(2) The heat dissipation performance of the cable itself;
(3) The condition of the cable installation and the heat dissipation conditions of the surrounding environment.

According to the difference of insulation and protective layer, what are the main types of commonly used low-voltage power cables?

(1) Oil-impregnated paper insulated lead-clad (or aluminum-clad) power cable;
(2) Non-drip oil-impregnated paper insulated power cable;
(3) PVC insulated and sheathed power cable;
(4) Cross-linked PVC insulated and PE sheathed power cable;
(5) Cross-linked PVC insulated and sheathed power cable;
(6) Rubber insulated power cables.

What are the requirements for the fire blocking of cable holes?

For larger cable penetration holes, such as the cable penetration floor, etc., when using fireproof blocking materials to block, according to the actual situation, first coat four to six layers of fireproof paint on the cable surface, the length is about 1.5m below the hole, and then use fire-resistant The material is processed into a board-supporting fire-proof blocking material with a certain strength to ensure that it is firm after being blocked and is easy to disassemble and assemble when the cable is replaced. The plugging is dense and non-porous to effectively block smoke and fire.

What are the main properties of the insulation material of the power cable?

(1) High breakdown strength;
(2) Low dielectric loss;
(3) Very high insulation resistance;
(4) Excellent discharge resistance;
(5) It has certain flexibility and mechanical strength;
(6) Long-term insulation performance is stable.

What are the regulations for cable protection tubes?

(1) When the cable needs to be laid through a protective pipe, the inner diameter of the pipe should not be less than 1.5 times the outer diameter of the cable, and the inner diameter of the concrete pipe, clay pipe, asbestos, and cement pipe should not be less than 100mm;
(2) The bending radius of the cable tube should meet the requirements of the bending radius of the cable inserted;
(3) Each pipe should not exceed three elbows at most, and there should be no more than two right-angle bends.

How to measure the outer diameter of the cable sheath?

At five evenly distributed points on the circumference of the sheath, measure the outer diameter of the sheath and its average value. The average outer diameter is the outer diameter of the sheath.

How to connect copper core cables with different cross-sections?

Copper core cables with different cross-sections can be connected by open-back weak copper pipes and connected by soldering, or pure copper rods can be connected into copper pipes according to different cross-sectional requirements and connected by crimping.

What are the insulating materials used to make cable terminal heads or intermediate joints?

There are insulating glue, insulating tape, insulating tube, insulating gloves, insulating resin, etc.

1 2 3

Welcome your inquiry

Honesty, Integrity, Frugality, Activeness and Passion