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Jelly filled cable is an underground cable having polythene as insulation on conductors and the inter-spaces between the conductors is fully filled with petroleum jelly. Petroleum jelly prevents ingress of moisture and water inside the core in the event of any damages to the cable. We supply JFTC from 5 pair to 200 pair cables of best quality.
Parameters | Conductor Size (mm) | |||
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0.4 | 0.5 | 0.63 | 0.9 | |
Conductor Resistance ( per km in ohms. ) Individual |
135 ± 8 | 86 ± 6 | 58 ± 4 | 28 ± 2 |
Conductor Resistance Unbalance (%) Individual Average |
3 1.5 |
2.5 1 |
2 1 |
2 1 |
Conductor Elongation (minimum %) | 15 | 15 | 18 | 18 |
Attenuation at 150 Khz (db/km) shall no exceed |
12 | 8.25 | 6.3 | 4.4 |
Insulation | Solid (MDPE/HDPE) | |||
Spark Test | 3 KV RMS AC, 1 Spark per 5 km. | |||
Retraction to Insulation shall no exceed |
2.5 mm after 1 min. |
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Resistance to Compression | 200 N, 12 V DC | |||
Insulation Resistance at 500V | 5000 Mega Ohm - Km. | |||
Construction | 10/20 Pair units & 50/100 pair super units os sizes: 10 pair to 2400 pairs. |
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Filling Compound | Water Resistant Compound (Petro Jelly) | |||
Core Wrap | Polyster tape | |||
Moisture Barrier | Poly - Aluminium | |||
Sheath / Jacket | LDPE | |||
Armouring | Galvanished Steel Tape | |||
Armouring Bedding | PE Tape | |||
Mutual Capacitance (NF/KM) Individual Average |
52 ± 4.5 52 ± 3 |
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Capacitance Unbalanace Individual Average |
3000 PF 750 PF |
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Far End Cross Talk (db) at 150 khz | Better than 67.8 RMS indvl. 55 RMS | |||
Near End Cross Talk (db) at 150 khz | Better than 55 RMS (individual value) | |||
Pairs | From 5 pairs to 2400 pairs |