field telephone cable
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
Payment Terms
TT in advance
Place of Origin
china
Delivery Time
15-30days
Minimum Order Quantity
5000m
Packaging Details
Cartons or wooden roll
Supply Ability
500km to 1000km per month
Product Description
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 |
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