| USP |
: Heavy duty performance. |
|
: Offers the best combination of safety, efficiency and economy. |
|
Typical Example of Design & Construction As per IS 1554. |
| Power Cable & Control Cable : Steel round , wire or steel strip armoured. |
|
| CONDUCTOR |
: High conductivity : Grade Copper. |
|
Insulation : PVC type A or C. |
|
Inner Sheath : PVC type ST1 or ST2 Galvanized wire steel strip. |
|
Armour : PVC type ST1 or St2. |
| IS SPECIFICATION |
: 8130 |
|
: 5831 |
|
: 5831 |
|
: 3975 |
|
: 5831 |
| CORE IDENTIFICATION |
|
| :For power cable and control cable upto 4 cores, the cores are identified by different colours as per IS 1554 : |
|
|
Single Core : Red, Yellow, Blue, Black etc. |
|
2 Core : Red and Black. |
|
3 Core : Red, Yellow and Blue. |
|
½ Core : Red, Yellow, Blue and reduced neutral core in Black. |
|
4 Core : Red, Yellow, Blue and Black. |
|
5Core : Red, Yellow, Blue, Black and Grey. |
|
| When the number of core exceed 5, numbering is provided on Black core and 1 core Yellow / Green. |
|
| CURRENT RATINGS |
: The current rating given in tables are based on normal conditions of installation described below. |
|
1. Maximum Conductor 700C for PVC Insulation &Temperature 850C for HRPVC Insulation. |
|
2. Thermal Resistivity of soil 1500C cm/w. |
|
3. Thermal Resistivity of PVC 6500C cm/w. |
|
4. Ground temperature 400C. |
|
5. Depth of laying 75 cms (to the highest point of cable laid direct in the ground). |
