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N2XSEH NA2XSEH

Uo/U - 6/10,12/20kV VDE 0276-622
The three-core cables flame retardant with insulation of cross-linked polyethylene (XLPE) are designed for transfer and distribution of electrical power with nominal voltage Uo/U 6/10; 12/20 kV and frequency 50 Hz.
 
The cables are manu­factured with sheaths of halogen free flame retardant materials. They are suitable for use in distribution installations, electric power stations and substations for fixed indoor assembly in cable ducts and conduits, over shelves and grilles.
 
They should not be laid directly underground or in water. The cables with halogen free materials are with low halogen free smoke emission and corrosivity.The cables should not be laid in or near nuclear stations.
Cable construction
Construction
According to DIN VDE 0276-622
Conductor
Inner semi-conductive layer
Cu and Al stranded compacted wiresto IEC 60228 cl.2 and VDE 0295 cl.2
semi-conductive XLPE compound
Insulation
XLPE compound
Outer semi-conductive layer
semi-conductive XLPE compound and semi-conductive tape
Metal screen
Cu wires concentrically laid and one contact of Cu tape with thickness of 0.1mm or Cu tapes laid with overlap over each phase
Cable assembly
three insulated and screenesd phases are twisted with fillings and tape support PVC compound
Inner sheath
halogen free compound, flame retardant
Sheath
halogen free compound, flame retardant type HM4 to VDE 0276-622
Color
black
Technical data
Conductor resistance at 20°C
According to IEC60228 class 2 and VDE 0295 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:
6.35/11 kV
Highest system voltage Uo/U, no more than
6/10 kV;       12/20 kV
12 kV;           24 kV
Test voltage Uo/U
AC (≈) - 5 min
DC (=) - 15 min
6/10    12/20 kV
21 kV;  42 kV
67 kV; 134 kV
Bending radius, min Temperature of laying
15xD cable no less than -5°C
Temperature of
exploitation
Tests
-30 to 50°C
VDE 0276-622
-flame retardant
VDE 0276-622(VDE 0472-804 method C) - IEC 332-3/B
-corrosivity ofcombustion gases
- pH
min. 4.3
- conductivity
max. 100µS/cm
-density of smoke gases
VDE 0276-622 method to VDE0472-816
 
Construction data N2XSEH, NA2XSEH   6/10 kV
Number of
conductors and
nominal cross
section
Thickness
of insulation
Thickness
of
sheath
Nominal cross-section of screen
Cable diame­ter approx.
N2XSEH
 NA2XSEH
Mass of
Cu approx
Mass of
cable
approx.
Mass of
Al approx.
Mass of
cable
approx.
N x mm2
mm
mm
mm2
mm
kg/km
kg/km
kg/km
kg/km
6/10kV                
3x35rm/16
3,4
2,5
16
46,2
1010
3276
298
2619
3x50rm/16
3,4
2,5
16
48,8
1363
3834
404
2923
3x70rm/16
3,4
2,5
16
53,0
1968
4784
584
3470
3x95rm/16  3,4 2,5 16 57,1 2732  5930  809 4103 
3x120rm/16
3,4
2,5
16
60,6
3440
6923
1023
4627
3x150rm/25  3,4 2,5 25 64,2 4245  8217  1257  5379 
3x185rm/25
3,4
2,5
25
68,5
5311
9691
1579
6144
3x240rm/25
3,4
2,5
25
74,3
6981
11963
2071
7331
3x300rm/25
3,4
2,5
25
79,6
8661
14294
2589
8526