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690 Voltage XPLE 3*50, 3*35,SWA Cable for Underground Coal Mine
Home > Products > Coal Mine Cable > 690 Voltage XPLE 3*50, 3*35,SWA Cable for Underground Coal Mine

690 Voltage XPLE 3*50, 3*35,SWA Cable for Underground Coal Mine

Product Description

690 Voltage XPLE 3*50, 3*35,SWA Cable for Underground Coal Mine

Product Description

 The three-core cables with insulation of cross-linked polyethylene (XLPE) and longitudinal water-blocking elements ,are designed for transfer and distribution of electrical power with nominal voltage Uo/U 3.6/6; 8.7/15 kV and frequency 50 Hz in urban and district electrical networks and for electrical supply of transformer's substations, small and medium industrial plants. 

 
They are suitable for use in distribution installations, electric power stations and industrial systems. The cables are for fixed assembly in lines with unlimited difference levels, indoor installations, in cable ducts, conduits and shafts, over shelves and grills directly underground in ditch and outdoor shelter.
Cable construction
Construction
According to BS 6622
Conductor
Cu or Al stranded compacted, according to BS 6360 (IEC 60228) class 2
Inner semi-conductive layer:
semi-conductive XLPE compound
Insulation
XLPE compound
Outer semi-conductive layer
semi-conductive XLPE compound
Metal screen over each phase
-I option- Cu tapes laid with overlap over each phase -II option - Cu wires laid concen trically
Cable assembly
Three insulated and screened phases are twisted with fillings and tape support
Separating layer
PVC compound - type 9
Armour
Galvanized steel wires, laid concentrically
Sheath
PVC compound - type 9 to BS 6755-4.2
Color
black
Technical data
Conductor resistance at 20°C
According to BS 6360 (IEC228) class 2
Operating temperature
90°C   continuous operation
Overload temperature
130°C  /100h per year max./
Short circuit temperature
250°C  /5 s max./
Nominal voltage Uo/U:
3.8/6.6; 6.35/11; 8.7/15; 12.7/22; 19/33
Highest system voltage Uo/U, no more than
7.2;       12;       17.5; 24;         36
Test voltage AC (≈) - 15 min
15;       25.5;    35; 51;        76kV
Level of partial discharge at kV
7.5;     12.5;     17.5;    25.5; 38 kV
max. 10pC
Bending radius, min
12x D cable
Bending radius adjacent
to joints or terminations,
min
10x D cable
Temperature of laying
no less than 0°C 
Temperature of exploita­tion
-30 to 50°C 
Force of strain in laying N max.
n-number of cores and
Al cores - 30*n*S core Cu cores - 50*n*S core S-cross section of cores in mm