Description

Technical Parameters

Certification

Three Core 1.9/3.3kV Copper MV Cable

1.9/3.3kV 3 core copper MV cable is endurance, chemical-resistant. MV cable has been strictly designed and tested, and has good tensile, compressive and impact resistance. This makes the cable less likely to be damaged during transportation, installation and long-term use, especially in some environments with harsh construction conditions, providing safety protection.

Min. installation temperature: 0°C

Operating temperature: -25°C to +90°C

Application

Three core 1.9/3.3kV copper medium voltage cable is designed for use in low and medium voltage distribution networks. It is ideal for powering local substations, distribution boxes, and medium capacity industrial machinery, providing reliable performance in controlled environments where ultra-high voltage is not required. Unlike 19/36kV or 35kV systems, which support long-distance, high capacity transmission, 1.9/3.3kV rated cables are optimized for short to medium distance runs within factories, commercial complexes, hospitals, and municipal projects.

Feature

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

• Conductor Screen: Extruded Semi-conductive compound

• Insulation: XLPE

• Insulation Screen: Extruded Semi-conductive compound

• Longitudinal Water blocking: Water blocking tape below copper screen (Optional)

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

• binder tape/sheath over assembled cores

• Metallic Sheath: Lead Alloy (optional)

• Outer Sheath: Extruded Polyvinyl Chloride, Colour: Black

• Insect attack Protection: Polyamide Nylon (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)

Certification

Medium voltage cables are SAA certified, with certification numbers: SAA242046 and SAA250307 (available on the certification website). Public and government-funded projects in Australia have particularly stringent compliance requirements, and many government tenders require SAA certification as a prerequisite. Our cables meet these eligibility requirements. Only safe, reliable, and compliant products are used in critical public infrastructure such as transport networks, hospitals, schools, and utilities.

Package

sta power cable package

Factory

Greater Wire Manufacturer has passed ISO, SAA, UL and other international certifications to ensure that its products meet the quality and safety standards of the global market. In addition, the factory gradually improves its industry status by participating in large-scale domestic and foreign exhibitions and industry association activities. The factory's technical strength and scale will also become an important symbol of its competitiveness in the industry. With leading R&D capabilities and production lines, the factory has more advantages in the competition.

Case

Company cases

Partner

greater wire Partner

FAQ

Q: Are MV cables suitable for underground installation?

A: MV cables are usually suitable for underground installation, as long as the cable structure design and material meet the special requirements of the underground environment. The cable has excellent moisture resistance and corrosion resistance, waterproof design, high mechanical strength, insect and rodent proof design, which can ensure that the current carrying capacity of the cable does not exceed the safe range under the installation conditions. The laying of underground cables needs to ensure that they are not directly pressed by hard and sharp objects. Usually during the installation process, soft soil, sand or protective tubes are filled around the cables to further protect the cables.

Q: What is the fire resistance rating of cables?

A: The fire resistance rating of cables refer to the ability of the cable to maintain its working ability in a fire, that is, whether it can continue to transmit power or signals and maintain certain physical and electrical properties under the action of high temperature and flame. The fire resistance rating is usually defined according to the temperature, duration, and performance of the cable in the flame. Common fire resistance rating standards include IEC, UL, BS, etc. Different standards have different test methods and ratings for the fire resistance of cables according to the application scenarios.

Common types of fire-resistant cables include mineral insulated cables (MI cables) and low-smoke halogen-free flame-retardant and fire-resistant cables.

Q: How many years is the normal service life of a cable?

A: The normal service life of cables is usually 20 to 40 years, but this depends on the type of cable, the installation environment, the conditions of use and the maintenance. The service life of low-voltage cables is generally 20 to 30 years. High-voltage and high-voltage cables, especially high-quality XLPE cables, can be used for more than 30 years under good maintenance. Special types such as mineral insulated cables can theoretically reach a service life of more than 50 years due to their fire-resistant and moisture-resistant structures.

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3C copper MV Cable

3C copper MV power Cable

No. of Cores	Core Cross sectional Area	Nominal Diameter
No. of Cores	Core Cross sectional Area	Under metallic screen	Under metallic screen	Overall
No.	mm2	mm	mm	mm
3	16	11.9	13.4	33.0
3	25	13.1	14.6	35.0
3	35	14.1	15.6	38.0
3	50	15.2	16.7	40.0
3	70	16.9	18.4	44.0
3	95	18.4	19.9	48.0
3	120	20	21.5	51.0
3	150	21.4	22.9	55.0
3	185	23.1	24.6	58.0
3	240	25.4	26.9	64.0
3	300	27.4	28.9	68.0
3	400	30.2	31.7	75.0
3	500	34	35.5	83.0

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

ELECTRICAL CHARACTERISTICS:

No.of Cores	Core Cross sectional Area	Max. DC Resistance at 20˚C	Max. AC Resistance at 90˚C	Approx. Capacitance	Approx. Inductance	Approx. Reactance	Continuous Current Rating
No.of Cores	Core Cross sectional Area	Max. DC Resistance at 20˚C	Max. AC Resistance at 90˚C	Approx. Capacitance	Approx. Inductance	Approx. Reactance	Buried direet in ground	In a buried duct	In Air
No.	mm2	Ω/km	Ω/km	µF/km	mH/km	Ω/km	Amps
3	16	1.15	1.446	0.26	0.600	0.189	101	87	109
3	25	0.727	0.927	0.3	0.569	0.179	129	112	142
3	35	0.524	0.668	0.34	0.551	0.173	153	133	170
3	50	0.387	0.494	0.38	0.534	0.168	181	158	204
3	70	0.268	0.342	0.44	0.505	0.159	221	193	253
3	95	0.193	0.247	0.49	0.492	0.154	262	231	304
3	120	0.153	0.196	0.55	0.477	0.150	298	264	351
3	150	0.124	0.159	0.59	0.468	0.147	334	297	398
3	185	0.0991	0.127	0.65	0.459	0.144	377	336	455
3	240	0.0754	0.097	0.73	0.450	0.141	434	390	531
3	300	0.0601	0.078	0.8	0.441	0.139	489	441	606
3	400	0.047	0.062	0.9	0.433	0.136	553	501	696
3	500	0.0366	0.049	0.93	0.427	0.134	632	574	800

*: Current Ratings are based on IEC 60502-2 & IEC 60287, Max. Conductor Temperature at 90℃, Ambient temperature at 30℃ in Air / at 20℃ 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℃ 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℃ 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

No.of Cores	Core Cross sectional Area	Max. pulling tension on conductor	Charging Current per phase	Zero sequence impedance	Electric Stress at Conductor Screen	Short circuit rating of Phase conductor
No.	mm²	kN	Amps/Km	Ohms/Km	kV/mm	kA, I sec
3	16	1.12	0.16	2.63	1.3	2.3
3	25	1.75	0.18	2.09	1.2	3.6
3	35	2.45	0.2	1.83	1.2	5.0
3	50	3.5	0.23	1.65	1.1	7.2
3	70	4.9	0.26	1.50	1.1	10.0
3	95	6.65	0.29	1.41	1.1	13.6
3	120	8.4	0.33	1.36	1.1	17.1
3	150	10.5	0.35	1.32	1.1	21.4
3	185	12.95	0.39	1.29	1.1	26.4
3	240	16.8	0.44	1.26	1.0	34.3
3	300	21	0.48	1.24	1.0	42.8
3	400	28	0.54	1.22	1.0	56.9
3	500	35	0.56	1.21	0.9	71.5

MV Cable

MV cable 02