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TR2031 loop detector feeder cable is a copper communications cable sheathed with medium density polyethyylene (MDPE) designed for installation in a ducted network. Armoured feeder cables are used to feed electrical current to inductive cable loops and designed for direct burial underground.
BS 6500
- Conductor: Solid plain annealed copper, comply with IEC 60228 for Class 1
- Insulation: Polythene (PE), comply with IEC 60708
- Core Identification: 1 pair – red, black
2 pair – red, yellow, blue, black laid up in quad formation in order of rotation
- Screen (for Non Armoured Cable Only)): Aluminum polymer laminate tape comply with IEC 60708
- Inner Sheath (for Armoured Cable Only): Medium density polyethylene (MDPE), comply with IEC 60708
- Armor (for Armoured Cable Only): Galvanized steel wires to BS EN 10257-1
- Outer Sheath: Medium density polyethylene (MDPE), comply with IEC 60708.
- Outer Sheath Color: Orange/Black
- Rated voltage: 600/Kft volts
- Minimum bending radius: 8 x ?
- Rated temperature: +70o C
- Conductor resistance at 20°C: 1.5mm2---- 12.1ohms/km
2.5mm2---- 7.41ohms/km
- Insulation resistance: >1500 MO x km
- Loop inductance: 630μH/km(1P) 720μH/km(2P)
- Capacitance:
| UNARMORED | ARMORED | |||
|---|---|---|---|---|
| 1.5 mm2 | 2.5 mm2 | 1.5 mm2 | 2.5 mm2 | |
| <75 pF/m | (1P) | pF/m | 64 pF/m (1P) | |
| 52 pF/m (2P) | 53.5 pF/m (2P) | |||
-Current rating:
| Unarmored in air (30°C) | armored in ground (15oC, 1.2oC m/W) | ||
| 1.5 mm2 | 2.5 mm2 | 1.5 mm2 | 2.5 mm2 |
| 24* | 33* | 32* | 41* |
*These ratings are based on only two cores loaded simultaneously. In two pair cables where all four cores could be loaded simultaneously, the above values should be multiplied by 0.78.
| NUMBER OF PAIRS | NOMINAL CONDUCTOR AREA | NOMINAL CONDUCTOR STRANDING | INSULATION THICKNESS | INNER SHEATH THICKNESS | NOMINAL DIAMETER OF ARMOUR WIRE | OUTER SHEATH THICKNESS | NOMINAL O/D | APPROX CABLE WEIGHT |
|---|---|---|---|---|---|---|---|---|
| MM2 | NO./MM | MM | MM | MM | MM | MM | KG/KM | |
| Unarmored cables | ||||||||
| 1 | 1.5 | 1/1.38 | 0.7 | - | - | 1.4 | 7.5 | 92 |
| 2 (Q) | 1.5 | 1/1.38 | 0.7 | - | - | 1.4 | 12.0 | 173 |
| 1 | 2.5 | 1/1.78 | 0.7 | - | - | 1.4 | 8.1 | 121 |
| 2 (Q) | 2.5 | 1/1.78 | 0.7 | - | - | 1.4 | 13.3 | 231 |
| Armored cables | ||||||||
| 1 | 1.5 | 1/1.38 | 0.7 | 0.7 | 0.9 | 1.4 | 10.6 | 255 |
| 2 (Q) | 1.5 | 1/1.38 | 0.7 | 0.7 | 0.9 | 1.4 | 11.5 | 327 |
| 1 | 2.5 | 1/1.78 | 0.7 | 0.7 | 0.9 | 1.4 | 11.2 | 296 |
| 2 (Q) | 2.5 | 1/1.78 | 0.7 | 0.7 | 0.9 | 1.4 | 12.3 | 395 |
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Caledonian Cables
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