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Single Core 12.7/22kV Copper MV Underground Cable

12.7/22kV copper MV underground cable features a Class 2 conductor made of high-purity electrolytic aluminum. The conductor is wrapped in a material designed to enhance electric field dispersion across the cable conductor's surface. The cable is fully insulated using a cross-linked material that ensures reliable insulation coverage. To simplify connection processes, the semiconductive layers in contact with the insulation are peelable and partially bonded. For added protection, a metallic screen surrounds the cable, with helically wrapped copper wires providing shielding. Additionally, a layer of hygroscopic material beneath the outer sheath prevents the longitudinal spread of water, enhancing the cable's durability in underground environments.

Min. installation temperature: 0 degree

Operating temperature: -25 degree to +90 degree

Emergency operating temperature: 105 degree

Max. Short Circuit Temperature: 250 degree

Large-scale infrastructure, power stations, and power supply systems in high-altitude areas such as mountainous areas all require the use of medium-voltage cables. The cables is resistant to low temperatures, UV rays, and mechanical damage to ensure power supply in complex terrain.

• Conductor: Stranded Compacted Circular Copper conductor as per AS/NZS 1125

• Conductor Screen: Extruded Semi-conductive compound

• Insulation Screen: Extruded Strippable Semi-conductive compound

• Metallic Insulation Screen: Copper Wire Screen + helically applied copper tape (E/F current capacity – Based on requirement)

• Termite Protection: Polyamide (Nylon -12) (optional)

(Alternative Sheath: PVC+HDPE Composite Sheath or PVC + Nylon + HDPE

(composite sheath with anti-termite properties) or LSZH Outer sheath, and parameters will change accordingly)

Our cables usually need to obtain a series of international certifications to ensure that the products can be exported to all parts of the world and meet the standards of different markets. For example, AS/NZS1429.1 copper MV underground cable has obtained SAA certification. In addition, our wires and cables have also obtained CE, UL, TUV, etc. Obtaining these certifications is not only a guarantee of product quality but also the foundation for enterprises to gain a foothold in the international market.

sta power cable package

Greater Wire manufacturer adopts ISO 9001 quality management system and has established strict quality monitoring procedures. From raw material warehousing inspection, production process monitoring to finished product testing, each link is carefully inspected. The factory is equipped with high-precision testing equipment, such as high-voltage testers, fire-resistant testing devices, etc., to ensure that the electrical properties, mechanical properties and environmental resistance of each batch of products meet the relevant standards. Our factory has a professional R&D team that focuses on the research and development of new materials and technologies for wires and cables. Through continuous innovation, R&D personnel have developed cable products that are more durable, more energy-saving and more environmentally adaptable to cope with market changes and new customer needs. Our factory cooperates with well-known domestic and foreign colleges and scientific research institutions, and regularly launches new products such as environmentally friendly cables, ultra-high voltage cables and intelligent cables, and is at the forefront of the industry.

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greater wire Partner

Q: What is termite-resistant cable?

A: Termite-resistant cable refers to a cable with a special protective layer (such as nylon 12 layer) to prevent termites and other insects from eroding the outer sheath of the cable.

Q: What is the long-term operating temperature of medium-voltage cables?

A: The long-term operating temperature of medium-voltage cables is usually 90 degree , and the short-term overload temperature can reach 105 degree , but it needs to be controlled within 36 hours.

Populāri tagi: single core 12.7/22kv copper mv underground cable, China single core 12.7/22kv copper mv underground cable manufacturers, suppliers, factory

MV105 cable

MV105 cable specification



	mm2
1	35	21.1	23.0	27.0
1	50	22.2	24.1	28.0
1	70	23.9	25.8	30.0
1	95	25.4	27.3	31.0
1	120	27	28.9	33.0
1	150	28.4	30.3	35.0
1	185	30.1	32.0	37.0
1	240	32.4	34.3	39.0
1	300	34.4	36.3	41.0
1	400	37.2	39.1	44.0
1	500	40.6	42.5	48.0
1	630	44.2	46.1	51.0
1	800	47.9	49.8	55.0
1	1000	52.2	54.1	60.0

• Above mentioned parameters are based on 3k A/sec earth fault current capacity of copper screen

		Max. DC Resistance at 20˚C	Max. AC Resistance at 90˚C
							In ground at 20 degree		20 degree		In air at 30 degree

	mm2
1	35	0.524	0.668	0.16	0.472	0.148	172	166	159	157	203	198
1	50	0.387	0.494	0.17	0.450	0.142	203	196	188	186	243	238
1	70	0.268	0.342	0.2	0.416	0.131	246	239	229	227	303	296
1	95	0.193	0.247	0.22	0.397	0.125	293	285	274	271	369	361
1	120	0.153	0.196	0.24	0.379	0.119	332	323	311	308	426	417
1	150	0.124	0.159	0.26	0.367	0.115	366	361	347	343	481	473
1	185	0.0991	0.128	0.28	0.355	0.112	410	406	391	387	550	543
1	240	0.0754	0.098	0.31	0.340	0.107	470	469	453	447	647	641
1	300	0.0601	0.079	0.33	0.329	0.103	524	526	510	504	739	735
1	400	0.047	0.063	0.37	0.318	0.100	572	590	571	564	837	845
1	500	0.0366	0.051	0.41	0.306	0.096	660	655	640	635	970	960
1	630	0.0283	0.042	0.46	0.296	0.093	735	730	715	710	1110	1100
1	800	0.0221	0.034	0.5	0.287	0.090	770	820	800	790	1260	1250
1	1000	0.0176	0.031	0.56	0.279	0.088	825	885	865	855	1420	1410

*: Current Ratings are based on IEC {{0}} & IEC 60287, Max. Conductor Temperature at 90 degree , Ambient temperature at 30 degree in Air / at 20 degree in Ground, Thermal resistivity of Soil 1.5 k.m/W & for earthenware ducts 1.2k.m/W and Depth of Laying 0.8m.

Current rating de-rating factors for other than 30 degree ambient air temperature.

20	25	35	40	45	50	55	60
1.08	1.04	0.96	0.91	0.87	0.82	0.76	0.71

Current rating de-rating factors for other than 20 degree ground temperature.

10	15	25	30	35	40	45	50
1.07	1.04	0.96	0.93	0.89	0.85	0.80	0.76



1	35	2.45	0.64	1.83	3.7	5.0
1	50	3.5	0.68	1.65	3.5	7.2
1	70	4.9	0.8	1.50	3.4	10.0
1	95	6.65	0.88	1.41	3.2	13.6
1	120	8.4	0.96	1.36	3.1	17.1
1	150	10.5	1.04	1.32	3.1	21.4
1	185	12.95	1.12	1.29	3.0	26.4
1	240	16.8	1.24	1.26	2.9	34.3
1	300	21	1.32	1.24	2.9	42.8
1	400	28	1.48	1.22	2.8	56.9
1	500	35	1.64	1.21	2.7	71.5
1	630	44.1	1.84	1.20	2.7	90.2
1	800	56	1.99	1.19	2.7	114
1	1000	70	2.23	1.19	2.6	143