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Home > Products > Medium Voltage Power Cables > 12/20KV MV 1C Power Cable (Umarmoured) Nominal Section:1*25~1*630mm² (CU/PVC/XLPE/LSZH/NYY/N2XY)

12/20KV MV 1C Power Cable (Umarmoured) Nominal Section:1*25~1*630mm² (CU/PVC/XLPE/LSZH/NYY/N2XY)

Product Details

Place of Origin: Henan, China

Brand Name: Zhenglan cable

Certification: 3C; ISO 9001:2015, ISO 14001:2005, OHSAS 18001:2007

Model Number: 12/20KV Single Core Power Cable (Unarmoured)

Payment & Shipping Terms

Minimum Order Quantity: 300 meters

Packaging Details: Wooden drum, wood and steel drum,as customer's request

Delivery Time: 12 days

Payment Terms: L/C, T/T,

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multi conductor power cable


xlpe medium voltage cables

Out Sheath Color:
Black Or Customized
1&3 Core
Cable Mark:
Ink Printing Or Embossing Content Customized
Cable Drum Length:
300~450 Meter Per Drum
Out Sheath Color:
Black Or Customized
1&3 Core
Cable Mark:
Ink Printing Or Embossing Content Customized
Cable Drum Length:
300~450 Meter Per Drum
12/20KV MV 1C Power Cable (Umarmoured) Nominal Section:1*25~1*630mm² (CU/PVC/XLPE/LSZH/NYY/N2XY)

12/20KV MV 1C Power Cable (Umarmoured) Nominal Section:1*25~1*630mm² (CU/PVC/XLPE/LSZH/NYY/N2XY), Insulated Cable according to IEC 60502/60228



The single core cables are designed for distribution of electrical power with nominal voltage Uo/U ranging from 3.8/6.6KV to 19/33KV and frequency 50Hz. They are suitable for installation mostly in power supply stations, indoors and in cable ducts, outdoors, underground and in water as well as for installation on cable trays for industries, switchboards and power stations.



BS 6622

BS 7835 (LSZH Version)


Noted:Single Core Cables to BS 6622/BS 7835/IEC 60502/VDE 0276



Conductor: Plain annealed copper or aluminium complying with IEC 60228/BS 6360. Copper conductors shall be stranded (class 2) and aluminium conductors shall be either solid or stranded (class 2).

Conductor Screen: Extruded layer of semi-conducting cross-linkable compound is applied over the conductor and shall cover the surface completely. The minimum thickness is 0.3mm and the maximum resistivity shall not exceed 500 Ohm-m at 90°C.

Insulation: Insulation is of cross-linked polyethylene compound XLPE (GP8) conforming to BS 7655-1.3 , conforming to BS 7655-1.2.

Cables Properties

Special features which we can offer for MV cables:

l Watertight construction (both radial and longitudinal).

l Lead sheath available for options.

l Resistant to heavy vibration.

l Available in long delivery lengths to reduce number of joints.

l Copper or aluminum conductor up to 630mm².

l Metallic sheath and radial moisture barrier made of copper wire or tape.

l Different options for outer PE jackets (LDPE, MDPE & HDPE).

l Different options for LSF, LSZH & FRPVC, being anti-termite or UV resistant as per BS 7835, IEC 60332 etc.

l Strippable insulation screen.

l Metallic screen made of multiple layers of copper tapes or a combination of copper wires and tapes to increase the earth fault current carrying capacity.

l Increased armour conductivity by insertion of hard drawn copper wires in armour.


Cable Construction:

medium voltage cables are manufactured using the monosil process. We provide the highly specialized plant, state-of-the-art research facilities and meticulous quality control procedures that are required for the manufacturing of PVC insulated cables for use up to 6KV and XLPE/EPR insulated cables for use at voltages up to 35 KV. The materials are all kept in cleanliness-controlled conditions throughout the production process in order to ensure the absolute homogeneity of the finished insulation materials.



Either aluminium or copper conductors are used. Conductors up to 630mm² will be circular, compacted & stranded and shall comply with IEC 60228 class 2. 630mm² conductor will be circular stranded type on which a layer of semi-conducting tape will be applied.



This will be an extruded layer of XLPE applied over conductor screen under triple extrusion process along with conductor screen and insulation screen.


Insulation Screen

This will be a layer of semi-conducting crosslinkable compound which will be applied by triple extrusion process over the insulation.


Over Sheath

An extruded layer is applied over the armour in case of armoured cables and over laid up cores in case of unarmoured cables. Outer sheath material can be either PVC, PE, HDPE or MDPE. our

medium voltage cables are normally supplied with red PVC over sheaths complying with BS 6622 or IEC 60502. Other colors may be provided to suit a range of installation considerations such as the effect of UV radiations and differing soil compositions. Anti-termite formulations can also be supplied in addition to graphite-coated over sheaths where on-site testing of the sheath is required.


Fire Performance on Cable Sheaths:

Cables can also be supplied with special flame retardant PVC over sheaths to comply with the IEC 60332 standard. We can also supply cables with Low Smoke Halogen Free (LSZH) sheaths according to BS 7211 and BS 6724 standards or other equivalent international standards.

Cable Parameters:
12/20 Medium Voltage Single Core Power Cable (Umamoured)




Unarmoured Cables



Copper Tape Thickness

Copper Wire Screen Area

Nom. Sheath Thickness

Approx. Overall Diameter


mm² mm mm mm² mm mm
25 5.5 0.1 16 1.8 24 720 560
35 5.5 0.1 16 1.8 25 840 620
50 5.5 0.1 16 1.8 26 990 690
70 5.5 0.1 16 1.8 28 1230 800
95 5.5 0.1 16 1.9 30 1530 940
120 5.5 0.1 16 2 31 1810 1050
150 5.5 0.1 25 2 33 2110 1190
185 5.5 0.1 25 2.1 35 2510 1360
240 5.5 0.1 25 2.1 38 3130 1610
300 5.5 0.1 25 2.2 40 3760 1860
400 5.5 0.1 35 2.3 43 4650 2220
500 5.5 0.1 35 2.4 46 5530 2545
630 5.5 0.1 35 2.5 50 6700 3100


Why Choose Zhenglan Cable:

  • OEM/ODM services provided;
  • Products comply with GB, IEC, BS, ASTM, DIN, VDE and JIS standards; Customer standard requirments Accepted;
  • Certified to ISO 9001:2015, ISO 14001:2015 and OHSAS 18001:2007;
  • Registered capital of $30 million and factory covers an area of 60,000㎡;
  • Advanced test equipment and procedures, 100% inspection before factory;
  • Enough stocks and the higest efficient shipping time guarranteed;
  • Professional pre-sales and after-sales services provided.
  • 12/20KV MV 1C Power Cable (Umarmoured) Nominal Section:1*25~1*630mm² (CU/PVC/XLPE/LSZH/NYY/N2XY) 0