HT XLPE
Cables Construction
CONDUCTOR
The Conductor is Plain annealed stranded and compacted round Copper in accordance with IEC-60228. Compacting of conductor improves its current carrying capacity, reduces losses and reduces overall cable diameter.
The Conductor is Plain annealed stranded and compacted round Copper in accordance with IEC-60228. Compacting of conductor improves its current carrying capacity, reduces losses and reduces overall cable diameter.
CONDUCTROR
SCREEN
An extruded tight fitting layer of
Semi-conducting is provided over the copper conductor as the provisions of
IEC-60502-2.
INSULATION
The insulation is Cross-linked polyethylene
(XLPE) applied by extrusion as per IEC-60502-2.
INSULATION
SCREEN
An extruded tight fitting layer of
Semi-conducting is provided over the XLPE insulation as the provisions of
IEC-60502-2.
METALLIC
SCREEN
A metallic screen of copper is provided over
insulation screen as per the provisions of IEC-60502-2.
INNER
COVERING:
Inner covering of extruded or taped PVC is
provided wherever applicable as per IEC-60502-2.
ARMOUR:
Armouring by Round wires or Flat wires or
Double tapes. The material of armour for Single core is aluminium whereas, for
multi-core cables it is Galvanized Sheet. Counter helix of Galvanized sheet
tape is provided on request for round steel wire & Flat wire armoured
cables. The armour is applied over the inner covering as per IEC-60502-2.
OVER
SHETH:
Over sheath is of extruded PVC as per
IEC-60502-2. Special properties for sheath can be provided on specific request,
such as FRLS, anti-termite & anti-rodent, resistance to ultraviolet
radiation etc.
3 Core
Round/Flat Wire HT XLPE Cables
Type: 2xSEYRGY/2xSEYFGY
Applicable Specification: IEC-60502-2.
Voltage grade 6/10(12) KV.
Construction:
Stranded copper conductor, extruded semi conducting conductor
screen, XLPE insulation, extruded semi conducting insulation screen, metallic
screen of copper, cores laid up with PVC fillers. Extruded PVC Inner covering,
Galvanized steel Round/Flat wire armour with counter helix binder tape, PVC
over sheathed.
Dimension
& Mechanical Data
Nominal conductor cross section
|
No. of strands in conductor
|
Nominal thickness of insulation
|
Steel armour wire Dia.
|
Nominal
Over Sheath thickness
|
Approx. Cable Diameter
|
Approx. weight of cable
|
mm2
|
Nos.
|
mm
|
mm
|
mm
|
mm
|
kg/km
|
3x50
|
19
|
3.4
|
2.5
|
2.7
|
58.7
|
6108
|
3x70
|
19
|
3.4
|
2.5
|
2.7
|
58.7
|
7089
|
3x95
|
19
|
3.4
|
2.5
|
2.8
|
52.6
|
8281
|
3x120
|
37
|
3.4
|
2.5
|
2.9
|
66
|
9376
|
3x150
|
37
|
3.4
|
2.5
|
3.0
|
69.4
|
10657
|
3x185
|
37
|
3.4
|
2.5
|
3.2
|
73.1
|
12084
|
3x240
|
61
|
3.4
|
3.2
|
3.4
|
80.4
|
15322
|
3x300
|
61
|
3.4
|
3.2
|
3.5
|
85.1
|
17669
|
Electrical
Data
Nominal conductor cross section
|
Max. conductor DC resistance @200C
|
Current rating @300C
in ground
|
Current rating @300C
in air
|
Capacitance
|
Inductance
|
mm2
|
Ohm/km
|
Amps
|
Amps
|
micro F/km
|
|
3x50
|
0.387
|
202
|
218
|
0.26
|
0.364
|
0.268
|
249
|
270
|
0.29
|
0.344
|
|
3x95
|
0.193
|
300
|
333
|
0.33
|
0.327
|
3x120
|
0.153
|
335
|
378
|
0.35
|
0.314
|
3x150
|
0.124
|
381
|
436
|
0.38
|
0.304
|
3x185
|
0.0991
|
421
|
503
|
0.42
|
0.295
|
3x240
|
0.0754
|
488
|
580
|
0.46
|
0.284
|
3x300
|
0.0601
|
525
|
617
|
0.50
|
0.275
|
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