K27 Fire Resisting Control Cables (CR1-C1 Class)
Applications :
- The cables are designed for provide circuit integrity for safety lightning, smoke extraction, ventilation, emergency telephone and exits during fi re for underground railways.
Standards :
- RATP K27 specifi cation
- Fire resistant: class CR1
- No fi re propagation: class C1 RATP (<30cm)
Construction :
- Conductors : Class 1 solid conductor from 1.5mm² to 4mm²; class 2 stranded conductor for 6mm².
- Insulation : Silicone rubber insulation.
- Stranding : Cores are helically stranded in concentric layers.
- Inner Sheath : LSZH.
- Armour : Two layers of steel tape.
- Outer Sheath : LSZH.
Electrical Characteristics at 20 °C :
-
Number of strands/Nominal Conductor Diameter mm 7/1.04 1/1.39 1/1.79 1/2.25 Nominal Cross Section Area mm2 6 1.5 2.5 4 Nominal Insulation Thickness mm 1.0 0.8 1.0 1.0 Operating Voltage V 300/500
Mechanical and Thermal Properties :
- Minimum Bending Radius : 5×OD (static); 10×OD (dynamic).
- Temperature Range : -10°C to +90°C (during operation); -10°C +60°C (during installation).
Dimensions and Weight :
Cable Code | Number of Cores |
Nominal Sheath Thickness mm |
Maximum Overall Diameter mm |
Nominal Weight kg/km |
|
Inner | Outer | ||||
7/1.04mm Conductor, 4.76mm Insulated Wire | |||||
RS/K27-SZ1F3Z1-U(AS+)-2G6 | 2 | 1.0 | 1.5 | 17.0 | 406 |
1/1.39mm Conductor, 2.99mm Insulated Wire | |||||
RS/K27-SZ1F3Z1-U(AS+)-2G1.5 | 2 | 1.0 | 1.5 | 11.3 | 200 |
RS/K27-SZ1F3Z1-U(AS+)-3G1.5 | 3 | 1.0 | 1.5 | 12.5 | 237 |
RS/K27-SZ1F3Z1-U(AS+)-12G1.5 | 12 | 1.0 | 1.5 | 18.9 | 596 |
1/1.79mm Conductor, 3.79mm Insulated Wire | |||||
RS/K27-SZ1F3Z1-U(AS+)-2G2.5 | 2 | 1.0 | 1.5 | 13.2 | 265 |
RS/K27-SZ1F3Z1-U(AS+)-3G2.5 | 3 | 1.0 | 1.5 | 13.5 | 309 |
1/2.25mm Conductor, 4.26mm Insulated wire | |||||
RS/K27-SZ1F3Z1-U(AS+)-2G4 | 2 | 1.0 | 1.5 | 14.7 | 325 |
RS/K27-SZ1F3Z1-U(AS+)-3G4 | 3 | 1.0 | 1.5 | 15.6 | 411 |
Impact Resistant |
Mineral Oil Resistant |
Acid&Alkaline Resistant |
Laid In conduit |
Low Toxicity |
Insulation Integrity FE180 EN 50200/IEC 60331 /NF C32-070-2.3(CR1) |
Flame Retardant NF C32-070-2.1(C2) IEC 60332-1/EN 50265-2-1 |
Fire Retardant NF C32-070-2.2(C1) IEC 60332-3/EN50266 |
Zero Halogen IEC 60754-1/NF C20-454 EN 50267-2-1 |
Low Smoke Emission IEC 61034/NFC20-902 EN 50268/NF C32-073 |
Low Corrosivity EN 50267-2-2/NF C32-074 IEC 60754-2/NF C20-453 |