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Customized Products
Fire Resistant RS485 Databus Cables to IEC60331-21
2x2x0.5mmsq Solid Cu/MICA/PE/Fire Barrier/OS+DW/LSZH
Application:
The cables are designed for RS 485 data connections where continued functionality is required during a fire
situation. This cable combines low capacitance insulation with one of the highest levels of screening to provide
high speed, interference free, data transmission where continued functionality is required during a ire situation.
Standards:
Basic design adapted to EIA/TIA 485
Fire Performance:
Circuit Integrity |
IEC 60331-23; BS 6387 CWZ (Optional) |
Flame Retardance (Single vertical wire or cable test) |
IEC 60332-1-2; EN 60332-1-2 |
Reduced Fire Propagation (Vertically-mounted bundled wires & cables test) |
IEC 60332-3-24; EN 60332-3-24 |
Halogen Free |
IEC 60754-1; EN 50267-2-1 |
No Corrosive Gas Emission |
IEC 60754-2; EN 50267-2-2 |
Minimum Smoke Emission |
IEC 61034-2; EN 61034-2 |
Cable Construction:
MULTIPAIR RS 485 OVERALL SCREENED DATABUS CABLE
Conductors: Bare/tinned copper wire, stranded according to IEC 60228 class 1or class2.
Insulation: Mica glass tape PE or PE +SR.
Cabling Elements: Insulated cores are twisted to form pairs with varying lay length to minimize crosstalk. Two
pair cable had four cores laid in quad formation.
Cabling: Pairs are cabled together in concentric layers.
Overall Fire Barrier: Mica glass tape.
Overall Screen: Aluminum/polyester tape with tinned copper drain wire.
Outer Sheath: Halogen-free fame retardant thermoplastic LSZH compound type LTS3 as per BS 7655-6.1
(Thermosetting LSZH compound type SW2-SW4 as per BS 7655-2.6 can be offered).
Outer Sheath Option: UV resistance, hydrocarbon resistance, oil resistance, anti-rodent and anti-termite
properties can be offered as option.
MULTIPAIR RS 485 OVERALL DOUBLE SCREENED DATABUS CABLE
Conductors: Bare/tinned copper wire, stranded according to IEC 60228 class 1or class2.
Insulation: Mica glass tape PE or PE +SR.
Cabling Elements: Insulated cores are twisted to form pairs with varying lay length to minimize crosstalk. Two
pair cable had four cores laid in quad formation.
Cabling: Pairs are cabled together in concentric layers.
Overall Fire Barrier: Mica glass tape.
Overall Screen: Aluminium/polyester tape+copper wire braid.
Outer Sheath: Thermoplastic LSZH compound type LTS3 as per BS 7655-6.1 (Thermosetting LSZH compound
type SW2-SW4 as per BS 7655-2.6 can be offered).
Outer Sheath Option: UV resistance, hydrocarbon resistance, oil resistance, anti-rodent and anti-termite
properties can be offered as option.
MULTIPAIR RS 485 CWB OVERALL SCREENED DATABUS CABLE
Conductors: Bare/tinned copper wire, stranded according to IEC 60228 class 1or class2.
Insulation: Mica glass tape PE or PE +SR.
Cabling Elements: Insulated cores are twisted to form pairs with varying lay length to minimize crosstalk. Two
pair cable had four cores laid in quad formation.
Cabling: Pairs are cabled together in concentric layers.
Overall Fire Barrier: Mica glass tape.
Overall Screen: Copper wire braid.
Outer Sheath: Thermoplastic LSZH compound type LTS3 as per BS 7655-6.1 (Thermosetting LSZH compound
type SW2-SW4 as per BS 7655-2.6 can be offered).
Outer Sheath Option: UV resistance, hydrocarbon resistance, oil resistance, anti-rodent and anti-termite
properties can be offered as option.
Physical and thermal properties:
Temperature range during operation (ixed state): -20°C - +90°C
Temperature range during installation (mobile state): -5°C - +60°C
Minimum bending radius: 8 x Overall Diameter
Electrical Properties:
Dielectric test: |
1000 V r.m.s. for 5’ (core-core) |
|
1000 V r.m.s. for 5’ (core-screen) |
Impedance: |
1200 |
Nom. mutual capacitance: |
45+/-5 nF/km conductor to conductor |
|
80+/-10 nF/km conductor to shield |
Nom. conductor resistance@ 20°C |
36.8 ohm/km |
Nominal Velocity of Propagation: |
66% |
Nominal attenuation@1Mhz: |
2 dB/100m |
Construction Parameters:
Multipair RS 485 Overall Screened Databus Cable RE-m02Y(St)H-FR/ RE-m02YS(St)H-FR
No.of Pair |
Nominal Cross Sectional Area |
No./Nominal Diameter of Strands |
Nominal Insulation Thickness |
Nominal Sheath Thickness |
Approx. Overall Diameter |
Approx. Weight |
No. |
mm2 |
No/mm |
mm |
mm |
mm |
kg/km |
1 |
0.22 |
7/0.2 |
1.2 |
1.1 |
6.6 |
73 |
2 |
0.22 |
7/0.2 |
1.2 |
1.1 |
10.9 |
136 |
4 |
0.22 |
7/0.2 |
1.2 |
1.1 |
12.6 |
214 |
1 |
0.50 |
1/0.8 |
1.2 |
1.1 |
7.2 |
88 |
2 |
0.50 |
1/0.8 |
1.2 |
1.1 |
13.5 |
165 |
4 |
0.50 |
1/0.8 |
1.2 |
1.1 |
14.9 |
266 |
1 |
0.75 |
24/0.2 |
1.2 |
1.1 |
7.6 |
100 |
2 |
0.75 |
24/0.2 |
1.2 |
1.1 |
12.8 |
189 |
4 |
0.75 |
24/0.2 |
1.2 |
1.1 |
15.0 |
309 |
1 |
1.00 |
30/0.2 |
1.2 |
1.1 |
7.8 |
106 |
2 |
1.00 |
30/0.2 |
1.2 |
1.1 |
13.1 |
199 |
4 |
1.00 |
30/0.2 |
1.2 |
1.1 |
15.3 |
328 |