The cables are telecommunication cables for tunnel application. The cables are halogen free fi re resistant, inductive protected and armoured.
Fire retardant: NBN C 30-004 F2
Fire resistant: NBN 713-020 Add.3. -RF 1h
Electrical Characteristics at 20℃Conductors: Solid copper conductor, 0.5mm nominal cross section area.
Insulation: Mica-tape + LSZH insulation.
Cabling Element: Four conductors are twisted to form a quad.
Stranding: Quads are helically stranded in concentric layers.
Core Wrapping: Plastic tape(s) with overlapping.
Inner Sheath: LSZH sheath.
Screen: Copper tape screen.
Intermediate Sheath: LSZH sheath.
Armour: Two layer of steel tape.
Outer Sheath: LSZH sheath.
| Nominal Conductor Diameter | mm | 0.8 |
| Nominal Cross Section Area | mm | 0.5 |
| Nominal Insulation Thickness | mm | 0.5 |
| Maximum Conductor Resistance (DC) | Ω/km | 36.7 |
| Minimum Insulation Resistance | MΩ.km | 100 |
| Maximum Capacitance | nF/km | 120 |
| Voltage Test 2 mins | KVac | 0.5 |
Minimum Bending Radius: 10×OD
Temperature Range: -40℃ to +60℃ (during operation); -10℃ +60℃ (during installation)
| Cable Code | No. of Quads | Nominal Sheath Thickness mm | Nominal Overall Diameter mm | Nominal Weight kg/km | ||
|---|---|---|---|---|---|---|
| Inner | Inter. | Outer | ||||
| 0.8mm Conductor, 1.8mm Insulated Wire | ||||||
| BRAIL MD4-HH(K)HBH-7Q0.8-FR | 7 | 1.0 | 1.0 | 1.8 | 30.7 | 1074 |
