7X0.28MM(3 Number of Zinc Covered Steel+4 Number of Tin Covered copper Strands)x2+2.3mmPolyethylene+Nylon+Double Wire (Twisted)
1. |
Thickness of insulation (Polyethylene) |
Minimum 0.35 mm |
2. |
Thickness of Polumide Jacket (Nylon) |
0.15 mm (Average) |
3. |
Overall diameter of single conductor |
Maximum 2.30 mm |
4. |
Breaking load for two wires conductor |
Minimum 72 Kg |
5. |
Cutting load test |
55 lb (Average)/25 Kg (Average) |
6. |
DC Loop Resistance |
151 Ohm/Km (at 20°C) |
7. |
Insulation Resistance |
2000 M Ohm/Km |
8. |
Dielectric Strength Test |
1000 V AC (Minimum) |
9. |
Weight of Zinc Cover for each steel Strands |
Minimum 25 gm/Kg |
10. |
Weight of Tin Covered for each steel Strands |
8.75 – 24.8 gm/Kg |
11. |
No. Of Twist/M |
14 – 16 Nos. (Average) |
12. |
Apparent Shape |
Double Wire (Twisted) |
13. |
Color |
Black |
14 |
Conductors (Physical Characteristics) |
|
|
(a) Number of Strands |
07 Nos |
|
(b) Number of Tin Covered copper Strands |
04 Nos |
|
(c) Number of Zinc Covered Steel Strands |
03 Nos |
|
(d) Diameter of each Stands |
0.28 mm ± 0.01 mm |