LT XLPE CABLES THE SUPERIOR PRODUCT
LT-XLPE Cables have a higher conductor rating i.e. "90°C as compared 70°C of PVC and hence higher current rating.
Maximum temperature limit under Short Circuit conditions for LT-XLPE Cables is 250°C as against 160"C for PVC Cables. Hence, LT-XLPE Cables have higher Short Circuit rating.
LT-XLPE Cables have higher emergency overload capacity than PVC Cables ( upto 60%).
LT-XLPE Cables have longer life as compared to conventional PVC Cables.
Tensile Strength for LT-XLPE Cables is 1.9 Kg/mm2 as against 1.25 - 2.5 Kg/mm2 for PVC Cables.
Elongation (%) in LT-XLPE Cables is 300-500 as compared to 200-400 in PVC Cables.
LT-XLPE Cables have high corrosion resistance in polluted atmosphere as compared to PVC Cables.
LT-XLPE Cables have better properties of resistance to chemical and corrosive gases.
LT-XLPE Cables have better properties to withstand vibrations, hot impacts.
Dielectric strength (KV/mm) for LT-XLPE Cables is 40-50 as compared to 20-35 for PVC Cables.
The moisture resistance of LT-XLPE Cables is nearly 100 times that of PVC.
LT-XLPE Cables have low Installation cost because of light weight, dimensions and are far more flexible.
Insulation resistance of LT-XLPE Cables is very high as compared to PVC (as high as 1000 times).
LT-XLPE Cables are ideal for transmission and distribution of power.
Jointing of LT-XLPE Cables is easier and quicker.
Low temperature Brittleness Degree 0C for LT-J XLPE Cables is-90 against-15 for PVC Cables.
OVERALL DIAMETER AND CURRENT RATINGS (IN GROUND) OF 1.1 KV, 31/2 Core, XLPE / PVC INSULATED, PVC SHEATHED (ARMOURED AND UNARMOURED) CABLES.
Nominal Area of Conductor |
Approximate Overall Diameter (mm) |
Current Rating Multicore |
Unarmoured |
Armoured |
MM2 |
PVC |
XLPE |
PVC |
XLPE |
PVC |
XLPE |
| 25 |
23.9 |
22.5 |
25.8 |
24.4 |
76 |
90 |
| 35 |
26.2 |
24.9 |
28.1 |
27.0 |
92 |
108 |
| 50 |
29.5 |
27.4 |
31.4 |
29.1 |
100 |
126 |
| 70 |
33.5 |
31.8 |
35.2 |
33.5 |
135 |
158 |
| 95 |
37.2 |
34.9 |
38.9 |
36.7 |
165 |
187 |
| 120 |
41.2 |
38.7 |
42.7 |
40.6 |
185 |
215 |
| 150 |
43.8 |
41.6 |
46.1 |
43.9 |
210 |
240 |
| 185 |
47.7 |
43.8 |
49.6 |
47.1 |
235 |
273 |
| 240 |
56.6 |
53.2 |
58.3 |
55.2 |
275 |
316 |
| 300 |
62.5 |
59.2 |
64.2 |
61.0 |
305 |
355 |
| 400 |
69.8 |
66.8 |
71.6 |
68.3 |
335 |
420 |
| 500 |
77.2 |
73.4 |
79.4 |
74.8 |
350 |
505 |
|
RATING FACTOR FOR VARIATION IN GROUND TEMPERATURE
| GROUND TEMPERATURE(° C) |
30 |
3.5 |
40 |
45 |
| RATING FACTOR ( XLPE ) |
1.00 |
0.94 |
0.91 |
087 |
| RATING FACTOR ( PVC ) |
1.00 |
0.94 |
0.87 |
0.79 |
|
