8.7/15KV Medium Voltage Single Core Power Cable (Unarmoured) ,
Insulated Cable according to IEC 60502/60228(Nominal Section:1*25~1*630mm²)
APPLICATIONS:
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.
STANDARD:
BS 6622
BS 7835 (LSZH Version)
Noted:Single Core Cables to BS 6622/BS 7835/IEC 60502/VDE 0276
CONSTRUCTION:
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.
Conductors
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.
Insulation
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:
8.7/15 Medium Voltage Single Core Power Cable (Umamoured)
Nom.
Cross-Section
Area | Unarmoured Cables |
Nom.Insulation
Thickness | Copper Tape Thickness | Copper Wire Screen Area | Nom. Sheath Thickness | Approx. Overall Diameter | kg/km |
| mm² | mm | mm | mm² | mm | mm |
| 25 | 4.5 | 0.1 | 16 | 1.8 | 22 | 640 | 480 |
| 35 | 4.5 | 0.1 | 16 | 1.8 | 23 | 760 | 540 |
| 50 | 4.5 | 0.1 | 16 | 1.8 | 24 | 900 | 610 |
| 70 | 4.5 | 0.1 | 16 | 1.8 | 26 | 1140 | 710 |
| 95 | 4.5 | 0.1 | 16 | 1.8 | 27 | 1420 | 830 |
| 120 | 4.5 | 0.1 | 16 | 1.9 | 29 | 1700 | 950 |
| 150 | 4.5 | 0.1 | 25 | 1.9 | 31 | 1990 | 1070 |
| 185 | 4.5 | 0.1 | 25 | 2 | 32 | 2380 | 1230 |
| 240 | 4.5 | 0.1 | 25 | 2.1 | 35 | 3010 | 1490 |
| 300 | 4.5 | 0.1 | 25 | 2.1 | 37 | 3620 | 1720 |
| 400 | 4.5 | 0.1 | 35 | 2.2 | 41 | 4490 | 2070 |
| 500 | 4.5 | 0.1 | 35 | 2.3 | 43 | 5460 | 2460 |
| 630 | 4.5 | 0.1 | 35 | 2.4 | 48 | 6790 | 2590 |
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.
