Basic Info.
Model NO.
Medium Voltage Cables
Application
Construction, Underground, Industrial, Power Station, Building and House,Factory,Hospital,Hotel
Voltage
Low and Medium Voltage Cable
Material Shape
Sector Shape
Wire Core Material
Annealed Copper Conductor
Certification
ISO, CCC, CE, RoHS
Factory
More 30 Years Experience
Original Place
Yanggu,Shandong,China
Production Equipment
860 Sets
Testing Equipment
314 (Taiwan) Sets
Cooperation
Power Transmission and Distribution Project Bids,
Main Production 01
The Ultrahigh Voltage ,High Voltage, Medium Voltag
Main Production 02
Optical Fiber Cable
Main Production 03
Control Cable/ Instrument Cable
Main Production 04
Aerial Cable AAC/AAAC/ACSR/ABC Cable
Transport Package
Wooden Drum &Wooden Steel Drum
Specification
IEC standard, CE ISO ROHS CCC
Origin
Yanggu, Shandong, China
Product Description
Single Core BS 6622/ BS7835 Medium Voltage Cables
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)
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.
Table 1. Insulation Thickness
Nom. Cross Section Area | Insulation Thickness at Nominal Voltage |
3.8/6.6KV (Um=7.2KV) | 6.35/11KV (Um=12KV) | 8.7/15KV(Um=17.5KV) | 12.7/22KV (Um=24KV) | 19/33KV (Um=36KV) |
mm2 | mm | mm | mm | mm | mm |
70 - 185 | 2.5 | 3.4 | 4.5 | 5.5 | 8.0 |
240 | 2.6 | 3.4 | 4.5 | 5.5 | 8.0 |
300 | 2.8 | 3.4 | 4.5 | 5.5 | 8.0 |
400 | 3.0 | 3.4 | 4.5 | 5.5 | 8.0 |
Above 500 | 3.2 | 3.4 | 4.5 | 5.5 | 8.0 |
Insulation 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. Total cross section of copper wire screen layer is shown in table 2.
Table 2. Minimum Total Cross Section of Copper Wire Screen & DC Resistance of the screen
Nominal Cross-Section of Cables | Minimum Cross-Section of Copper Wire Screen | DC Resistance of the Copper Wire Screen at 20°C |
mm2 | mm2 | Ω |
up to 120 | 16 | 1.06 |
150-300 | 25 | 0.72 |
400-630 | 35 | 0.51 |
Separation Sheath (for armoured cable): 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 (for armoured cable): The armour consists of round aluminium wire with diameter specified as in Table 3.
Table 3. Armour Wire Diameter
Fictitious Diameter Under the Armour | Armour Wire Diameter |
mm | mm |
> | < | |
| 25 | 1.6 |
25 | 35 | 2.0 |
35 | 60 | 2.5 |
60 | - | 3.15 |
Over Sheath: Overall sheath comprises a layer of extruded either PVC type 9 conforming to BS 7665-4.2 or MDPE type TS2 conforming to BS 7655-10.1. LSZH can be offered as an option. The oversheath is normally black in colour. When a DC voltage test is to be performed on the oversheath, a semi conducting layer such as graphite coating shall be applied over the surface of the extruded oversheath. The nominal oversheath thickness is calculated by 0.035+D where D is the diameter immediately under the oversheath in mm. For cables with the oversheath not applied over the armour, the nominal oversheath thickness shall not be less than 1.4mm. And for cables with oversheath applied over the armour, the nominal oversheath thickness shall not be less than 1.8mm.
PHYSICAL PROPERTIES:
Operating Temperature: up to 90°C
Temperature Range: -5°C ( PVC sheath ); -20°C ( PE sheath )
Short Circuit Temperature: 250°C (short circuit duration up to 5 seconds)
Bending Radius: 12 x OD
Table 4. Nominal /Operating /Test Voltages:
Rated Voltage Uo/U | Operating Voltage (Um) | Testing Voltage (rms) |
3.8/6.6KV | 7.2KV | 15KV |
6.35/11KV | 12KV | 25.5KV |
8.7/15KV | 17.5KV | 35KV |
12.7/22KV | 24KV | 51KV |
19/33KV | 36KV | 76KV |
Single Core 3.8/6.6KV (Um=7.2KV)
Single Core 6.35/11KV (Um=12KV)
Single Core 8.7/15KV (um=17.5kV)
Single Core 12.7/22KV (um=24kV)
Single Core 19/33KV (um=36kV)
Current Rating
Address:
No. 68 Lishan North Road, Tianqiao District, Jinan, Shandong, China
Business Type:
Manufacturer/Factory
Business Range:
Electrical & Electronics
Management System Certification:
ISO 9001, ISO 9000, ISO 14001, ISO 14000, OHSAS/ OHSMS 18001
Company Introduction:
Shandong Yanggu Cable Group′s predecessor is Shandong Yanggu Cable Factory, was founded in 1986. Shandong Yanggu Cable Group is engaged in wire and cable high-tech research and production. Shandong Yanggu Cable Group is a high technology, high benefit State-owned large enterprises, One of the largest cable production base in China.
Shandong Yanggu Cable Group has plant area more than700, 000 square meters, has more than 2, 000 employees, hasthe Shandong Pacific Fiber Cable Co., Ltd., Nexans (Yanggu) New Rihui Limited, Yanggu Mingschin Copper Co., Ltd., Shandong Pacific Oaks Cable Ltd. And other holding companies.
Our Company has extensive manufacturing experience, strong technical capability, advanced equipment and well-appointed detection means. Company has main production equipment 860 (sets) and testing equipment 314 (Taiwan) sets. Which was imported successively from South Korea, Japan, the United States, Switzerland, Finland, Germany and other seven countries have the international leading level of the ultrahigh voltage and high voltage cross-linking cables, rubber sets of cables, fiber optic cable production line and testing equipment: Nokia of Finland, Troost of Germany is vertical and catenary cross-linking production line, three-layer co-extruded rubber cable PLCV120 UK production line, production line CCV90 Germany, Finland NEXTROM, Austria MS company, ROSSENDAHL company′s full range of cable production line, built to high 128.9 meters of vertical cross-linking pylons, Largest one in Asia is 500 kv power cables resonance test area, ensure the quality of the products reached the domestic leading level.