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