11kv CWA Screened AWA Armored Underground Cable Medinum Voltage

11kv CWA screened AWA armored underground cable 1x120sqmm Medinum voltage power cable

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)

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 or EPR (GP7), conforming to BS 7655-1.2.

Insulaton Screen: Extruded layer of semi-conducting cross-linkable compound is applied over the insulation. The extruded semi-conducting layer shall consist of bonded or cold strippable semi-conducting compound capable of removal for jointing or terminating. As an option, a semi-conducting tape may be applied over the extruded semi-conducting layer as a bedding for the metallic layer. The minimum thickness is 0.3 mm and the maximum resistivity is 500 Ohm-m at 90°C. The screen is tightly fitted to the insulation to exclude all air voids and can be easily hand stripped on site.
Metallic Layer: The metallic layer shall consist of either copper tapes or a concentric layer of copper wires or a combination of tapes and wires. The metallic layer provides an earth fault current path, capable of withstanding fault current to earth of 1000A for one second at maximum temperature 160°C. Copper wires are applied over the conducting water blocking layer with a minimum diameter of 0.5mm. And over the copper wires, copper tape with minimum thickness of 0.1mm can be applied helically with overlap.

Separation Sheath: The separation sheath comprises a layer of extruded PVC, PE or LSZH. The nominal thickness is calculated by 0.02Du + 0.6mm where Du is the fictitious diameter under the sheath in mm. The nominal separation sheath thickness shall not be less than 1.2mm.

Armour: The armour consists of round aluminium wire with diameter specified as in Table 3.

Table 3. Armour Wire Diameter

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About Zhenglan Cable Technology Co., Ltd

Zhenglan Cable Technology CO., Ltd.,formerly known as HENAN Zhengzhou Cable Co., Ltd., is one of the large scale backbone enterprises in China's wire and cable industry. The factory is located in the Zhengzhou cable science and Technology Industrial Park of the Wuzhi industrial area. It is a modern industrial park integrating advanced research and development technology and production technology.

FAQ
1. Is your company a factory or a trade company?
Factory, more than 20 years in China

2. How long can I expect to get the sample?
After you pay the freight charge and send us confirmed files, the samples will be ready for delivery in 3-7 days. The samples will be sent to you via express and arrive in 3~7 days. You can use your own express account or prepay us if you do not have an account.

3. What are your payment terms?
We normally accept T/T 30% deposit, 70% balance before delivery as the main payment terms, and other payment can also be negotiated. Trade assurance on Alibaba is also available.

4. What’s the delivery time?
Sample order needs 3~5 days. Formal order depends on the quantity. Usually it needs 7-30 days after get your payment.

5. What is your MOQ?
Generally for medinum voltage poer cable MOQ is 1000m.