INDOOR CABLES
SCREENED PCM CABLES
Solid / Foam Skin Insulated, Individual Screened Twisted
Pairs, PVC Sheathed, Overall Screened Telecommunication Cables
Application
- Digital equipment wiring to work up to 2 M bits/sec.
Typical Cross section for Armoured Cable
Electrical Characteristics:
| Resistance | |
| Conductor Resistance at 200C (O /Km) | 86 ± 3 |
| Resistance Unbalance (%) | 2.5 (Max. Indiv.) 1.0(Max. Avg.) |
| Insulation Resistance at 500 V Dc(M O Km) | 10,000 |
| Dielectric Strength | |
| 4. 2.4 KV Dc for 3 seconds | With stands |
| Capacitance | |
| Mutual capacitance at 1 KHz (nF/Km) | 45 ± 5 |
| Earth capacitance unbalance (pF/500m) | 2000 (Max.) |
| Impedance | |
| Characteristics impedance at 1 MHZ (O ) | 120 ± 10 |
| Attenuation | |
| Attenuation at 20°c at 1 MHz (dB/Km) | 20 dB/Km (Max.) |
| Cross Talk [pair to pair within unit] | |
| Near end cross talk at 1 MHZ (dB) | 85 (Min.) |
| Far end cross talk at 1 MHZ (dB/Km) | 67 (Min.) |
Features:
Cable Diameter , Standard Length & Packing:
| Cable Diameter | : 10 P: 15 mm (Maximum) 16 P: 18 mm (Maximum) |
| Standard Length | : 500 mtr ± 10% |
| Packing | : Wound and packed in wooden drums |
Colour Code:
Each pair shall be Red for Wire-1 and Blue for Wire-2, with serial number of the pair viz. 1 to 10/16, marked at regular interval, on the outer surface of the Aluminium film used for Pair Screening.