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Three Core Medium Voltage Cables To Bs 6622 / Bs 7835
Posted at: Offers to Sell and Export | Posted on: Wednesday 18 November 2015 3:46 am | Poster last visit: Monday 16 January 2017 |
Product Category: Main
» Power Generation and Distribution Machinery and Accessories
» Electrical wire and cable and harness
» Electrical cable and accessories
» Screened cables
» Three Core Medium Voltage Cables To Bs 6622 / Bs 7835
Product Description:
Applications
The three core cables are designed for distribution of electrical power with nominal voltage
Uo/U ranging from 3.6/6.6KV 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 6622BS 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.
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
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.
Inner Covering & Fillers For cables with a collective metallic layer or cables with a metallic layer over each individual cores with additional collective metallic layers, semi-conducting inner covering and fillers shall be applied over the laid up cores. The inner covering is made of non hygroscopic material, except if the cable is to be made longitudinally watertight. The inner covering shall be extruded or lapped.
The approximate thickness of extruded inner coverings is given in Table 2:
Company Contact:
Contact Name: Rainbow
Company Name: Caledonian Cables Ltd
Email:
Tel: 852-21161040
Fax: 852-21161041
Street Address: 1/f Cma Building 64
Connaught Road Central
Hongkong, Hongkong 999077
Hong Kong
Website: https://www.caledonian-cables.co.uk
Member name: caledonianltd
Country:
Hong Kong
Member Since: 18 September 2015
Total Leads: 14 caledonianltd Import Export Business Leads
Business focus: Cables, Power Cables, Control Cables, Fire Resistant Cables
Chat:
Verify: Safe Import Export Tips
The three core cables are designed for distribution of electrical power with nominal voltage
Uo/U ranging from 3.6/6.6KV 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 6622BS 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.
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
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.
Inner Covering & Fillers For cables with a collective metallic layer or cables with a metallic layer over each individual cores with additional collective metallic layers, semi-conducting inner covering and fillers shall be applied over the laid up cores. The inner covering is made of non hygroscopic material, except if the cable is to be made longitudinally watertight. The inner covering shall be extruded or lapped.
The approximate thickness of extruded inner coverings is given in Table 2:
Company Contact:
Contact Name: Rainbow
Company Name: Caledonian Cables Ltd
Email:
Tel: 852-21161040
Fax: 852-21161041
Street Address: 1/f Cma Building 64
Connaught Road Central
Hongkong, Hongkong 999077
Hong Kong
Website: https://www.caledonian-cables.co.uk
Member name: caledonianltd
Country:
Hong KongMember Since: 18 September 2015
Total Leads: 14 caledonianltd Import Export Business Leads
Business focus: Cables, Power Cables, Control Cables, Fire Resistant Cables
Chat:
Verify: Safe Import Export Tips
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