6kv VDE 0276 N2xsey Three Core 3*120 Mm

6KV VDE 0276 N2XSEY Three core 3*120 mm

Three Core Cables to VDE 0276
Application
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.
Standards
DIN VDE 0276 Part 620 -622
HD 620 S1
Construction
Conductor: Stranded compacted circular copper or aluminium conductors according to IEC 60228 class 2 / VDE 0276 class 2. VDE 0295 HD 383. All internal interstices of the conductor are filled with water blocking compound to prevent ingress of water through conductor during storage, handing, installation and operating of the cable.
Conductor Screen: The conductor screen consists of an extruded layer of non metallic, semi-conducting compound firmly bonded to the insulation to exclude all air voids. The screen has a minimum thickness of 0.3mm and the maximum volume resistivity of 500 Ohm-m at 90°C.
Insulation: Insulation is of extruded XLPE compound type 2XI1 according to DIN VDE 0207 part 22 and HD 620.1 with high degree of cross-linking, free from contaminants, air voids and heat resistant by dry cured process.
The nominal insulation wall thickness is shown in table 1.
Table 1. Insulation Thickness
Nom. Cross-Section
Area
Insulation Thickness at Nom. Voltage
3.6/6kV (Um=7.2)kV
6/10KV (Um=12KV)
8.7/15KV (Um=17KV)
12/20KV (Um=24KV)
18/30KV (Um=36KV)
mm²
mm
mm
mm
mm
mm

XLPE
XLPE
XLPE
XLPE
XLPE
35
2.5
3.4
4.5
5.5
-
50
2.5
3.4
4.5
5.5
8.0
70
2.5
3.4
4.5
5.5
8.0
95
2.5
3.4
4.5
5.5
8.0
120
2.5
3.4
4.5
5.5
8.0
150
2.5
3.4
4.5
5.5
8.0
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
Insulation Screen: The insulation screen consists of extruded non metallic, semi-conducting compound extruded 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. The minimum thickness is 0.3mm and the maximum volume resistivity of 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.
Conducting Water Blocking Layer: The insulation screen may be covered by semi- conductive water blocking tape which will swell up under the influence of moisture of water to ensure longitudinal watertightness.
Metallic Screen: 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 is applied helically with overlap. Total cross section of metallic screen layer is shown in table 2. The screen can withstand of fault current to earth of 1000 A for one second at maximum temperature of 160°C. Minimum cross section of concentric conductor is according to DIN VDE 0273 & 0276 as shown.
Table 2. Minimum Total Cross Section of Metallic Screen
Nominal Cross-Section Area Of Cable
Minimum Cross-Section of Metallic Screen
DC Resistance of the Copper Wire Screen
mm²
mm²
mm
Up to 120
16
1.06
150-300
25
0.72
400-630
35
0.51
800-1000
50
0.35
Separator / Water Blocking Layer: The metallic screen may be covered by non-conducting water blocking tape which will swell up under the influence of moisture of water to ensure longitudinal watertightness.
Separation Sheath (for armoured cable): The separation sheath comprises a layer of extruded PVC, PE or LSZH, applied under the armour. Thickness of separation sheath is shown in table 3.
Table 3. Separation Sheath Thickness
Cores Diameter
Approx.Thickess of Inner Sheath
mm
mm
>
<

35
45
1.4
45
60
1.6
60
80
1.8
80
-
2.0
Armour(for armoured cable): The armour consists of:
1) Double layers of galvanized steel tape are applied helically with proper inner overlapping over an extruded separation sheath. Thickness of the steel tape is shown in table 4.
Tabel 4. Galvanized Steel Tape Thickness
Inner Diameter
Thickness of Galvanized Steel Tape
mm
mm
>
<

-
30
0.2
30
70
0.5
70
-
0.8
2) Galvanized flat steel wires with thickness of 0.8 mm are applied helically over the surface of inner sheath with minimum of 90% coverage. And galvanized Steel tape with nominal thickness of 0.3 mm is applied helically with 50% coverage to cover the surface of the flat wires.
Outer Sheath: Overall sheath comprises a layer of extruded PE compound DMP2 according to HD620.1 and 2YM3 type to DIN VDE 0276 Part 3, or PVC compound DMV6 according to HD620.1 and YM5 to DIN VDE 0276 Part 6. Normal wall thickness is 2.5mm (1/500mm
18/30sq 2.6mm), suitable for exposure to sun-light or other local atmospheric environments and for the operating temperature of the cable.
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: 15 x OD (Cable without metal sheath)
30 x OD (Cable with aluminium sheath)
Table 5. Nominal /Operating /Testing Voltages
Nominal Voltage Uo/U
Operating Voltage (Um)
Testing Voltage
3.6/6KV
8KV
12.5KV
6/10KV
12KV
21KV
8.7/15KV
18KV
30.5KV
12/20KV
24KV
42KV
18/30KV
36KV
63KV
Medium  Voltage Cables to VDE 0276
TYPE CODES:
Conductor
N          According to VDE Standard (No abbreviation for copper conductor) A  Aluminium conductor
Copper conductor
Insulation
2X       XLPE
Screen
C        Concentric conductor of copper
CE       Concentric conductor of copper over each individual core
S         Screen of copper wires & copper tape,helically wound
SE       Screen of copper wires over each individual cores
(G)      Longitudinally waterproof
Armour
F         Armour of galvanized flat steel wire
G        Counter Helix of galvanized steel tape
B         Steel tape armouring
R        Armour of galvanized round steel wire
Sheath
2Y        PE
Y           PVC H           LSZH
K         Lead sheath
KL       Aluminium sheath
Three Core  3.6/6KV (Um=7.2KV)
N2XSEY
NA2XSEY
Dimensional Data
Nom. Cross- Section Area
Approx. Conductor Diameter
Nom. Insulation Thickness
Copper Tape Thickness
Copper Wire Screen Area*
Approx. Insulation Diameter
Nom. Sheath Thickness
Approx. Overall Diameter
Approx. Weight
Cu
Al
mm²
mm
mm
mm
mm²
mm
mm
mm
kg / km
kg / km
25
6.05
2.5
0.1
16
12.5
1.5
37
2100
1600
35
7.10
2.5
0.1
16
13.5
1.6
39
2500
1800
50
8.25
2.5
0.1
16
14.7
1.6
42
3000
2100
70
9.90
2.5
0.1
16
16.3
1.7
46
3800
2500
95
11.7
2.5
0.1
16
18.1
1.7
50
4800
3000
120
13.1
2.5
0.1
16
19.5
1.8
53
5800
3500
150
14.3
2.5
0.1
25
20.7
1.8
56
6700
3900
185
16.3
2.5
0.1
25
22.7
1.9
60
8100
4600
240
18.7
2.6
0.1
25
25.3
1.9
66
10200
5600
300
20.9
2.8
0.1
25
27.9
2.0
72
12500
6700
400
23.7
3.0
0.1
35
31.1
2.1
80
15600
8200
*Optional wire screen can be provided in combination of copper tapes. Nominal screen area, as stated in the table, can be supplied as standard.
Three Core 3.6/6KV (Um=7.2KV) Galvanized Steel Tape Armoured Cables
N2XSEYBY NA2XSEYBY Dimensional Data
Nom. Cross- Section Area
Approx. Conductor Diameter
Nom. Insulation Thickness
Copper Tape Thickness
Copper Wire Screen Area*
Approx. Insulation Diameter
Nom. Armour Thickness
Nom. Sheath Thickness
Approx. Overall Diameter
Approx. Weight
Cu
Al
mm²
mm
mm
mm
mm²
mm
mm
mm
mm
kg / km
kg / km
25
6.05
2.5
0.1
16
12.5
0.5
2.2
39
2800
2300
35
7.10
2.5
0.1
16
13.5
0.5
2.3
42
3200
2600
50
8.25
2.5
0.1
16
14.7
0.5
2.4
45
3800
2900
70
9.90
2.5
0.1
16
16.3
0.5
2.5
49
4700
3400
95
11.7
2.5
0.1
16
18.1
0.5
2.6
53
5800
4000
120
13.1
2.5
0.1
16
19.5
0.5
2.7
56
6800
4600
150
14.3
2.5
0.1
25
20.7
0.5
2.8
59
7900
5100
185
16.3
2.5
0.1
25
22.7
0.8
2.9
64
9400
5900
240
18.7
2.6
0.1
25
25.3
0.8
3.1
70
11700
7000
300
20.9
2.8
0.1
25
27.9
0.8
3.3
76
14100
8300
400
23.7
3.0
0.1
35
31.1
0.8
3.6
85
18300
10900
*Optional wire screen can be provided in combination of copper tapes. Nominal screen area, as stated in the table, can be supplied as standard.
Three Core 3.6/6KV (Um=7.2KV) Galvanized Flat Steel wire+Steel Tape Armoured Cables
Three Core 6/10KV (Um=12KV)
Three Core  8.7/15KV (Um=17.5KV)
Three Core 12/20KV (Um=24KV)
Three Core 18/30KV (Um=36KV)
Current Rating for Three Core 1.8/3KV(Um=7.2 )KV to 26/35KV(Um=42KV))                          
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