Fire Resistant RS485 Databus Cables
Application
The cables are designed for RS485 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 fire situation.
Standards
Basic design 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
| Conductor |
Tinned copper wire, stranded according to IEC 60228 class 2. |
| Insulation |
Foam PE or foam skin 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 flame 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
| Conductor |
Tinned copper wire, stranded according to IEC 60228 class 2. |
| Insulation |
Foam PE or foam skin PE. |
| 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 INDIVIDUAL & OVERALL SCREENED DATABUS CABLE
| Conductor |
Tinned copper wire, stranded according to IEC 60228 class 2. |
| Insulation |
Foam PE or foam skin PE. |
| 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. |
| Individual Screen |
Individual aluminium/polyester tape. |
| 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. |
MULTIPAIR RS 485 OVERALL SCREENED DATABUS CABLE
| Conductor |
Tinned copper wire, stranded according to IEC 60228 class 2. |
| Insulation |
Foam PE or foam skin PE. |
| 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 (fixed 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 |
120Ω |
| Capacitance |
45 nF/km conductor to conductor |
| |
90 nF/km conductor to shield |
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 |
16/0.2 |
1.2 |
1.1 |
7.2 |
88 |
| 2 |
0.50 |
16/0.2 |
1.2 |
1.1 |
12.0 |
165 |
| 4 |
0.50 |
16/0.2 |
1.2 |
1.1 |
14.0 |
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 |
Multipair RS 485 Overall Double Screened Databus Cable
RE-m02Y(St)CH-FR / RE-m02YS(St)CH-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 |
7.1 |
91 |
| 2 |
0.22 |
7/0.2 |
1.2 |
1.1 |
11.4 |
168 |
| 4 |
0.22 |
7/0.2 |
1.2 |
1.1 |
13.1 |
252 |
| 1 |
0.50 |
16/0.2 |
1.2 |
1.1 |
7.7 |
108 |
| 2 |
0.50 |
16/0.2 |
1.2 |
1.1 |
12.5 |
201 |
| 4 |
0.50 |
16/0.2 |
1.2 |
1.1 |
14.5 |
308 |
| 1 |
0.75 |
24/0.2 |
1.2 |
1.1 |
8.1 |
121 |
| 2 |
0.75 |
24/0.2 |
1.2 |
1.1 |
13.3 |
228 |
| 4 |
0.75 |
24/0.2 |
1.2 |
1.1 |
15.5 |
355 |
| 1 |
1.00 |
30/0.2 |
1.2 |
1.1 |
8.8 |
128 |
| 2 |
1.00 |
30/0.2 |
1.2 |
1.1 |
13.6 |
238 |
| 4 |
1.00 |
30/0.2 |
1.2 |
1.1 |
15.8 |
375 |
Multipair RS 485 Individual & Overall screened Databus Cable
RE-m02Y(St)CH PiMF-FR / RE-m02YS(St)CH-FR PiMF-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 |
7.4 |
94 |
| 2 |
0.22 |
7/0.2 |
1.2 |
1.1 |
12.1 |
176 |
| 4 |
0.22 |
7/0.2 |
1.2 |
1.1 |
14.0 |
266 |
| 1 |
0.50 |
16/0.2 |
1.2 |
1.1 |
8.0 |
111 |
| 2 |
0.50 |
16/0.2 |
1.2 |
1.1 |
13.3 |
210 |
| 4 |
0.50 |
16/0.2 |
1.2 |
1.1 |
15.5 |
325 |
| 1 |
0.75 |
24/0.2 |
1.2 |
1.1 |
8.4 |
125 |
| 2 |
0.75 |
24/0.2 |
1.2 |
1.1 |
14.2 |
237 |
| 4 |
0.75 |
24/0.2 |
1.2 |
1.1 |
16.6 |
372 |
| 1 |
1.00 |
30/0.2 |
1.2 |
1.1 |
8.6 |
131 |
| 2 |
1.00 |
30/0.2 |
1.2 |
1.1 |
14.5 |
248 |
| 4 |
1.00 |
30/0.2 |
1.2 |
1.1 |
17.0 |
393 |
Multipair RS 485 Overall Screened Databus Cable
RE-m02YCH-FR / RE-m02YSCH-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 |
6.9 |
86 |
| 2 |
0.22 |
7/0.2 |
1.2 |
1.1 |
11.2 |
160 |
| 4 |
0.22 |
7/0.2 |
1.2 |
1.1 |
13.0 |
243 |
| 1 |
0.50 |
16/0.2 |
1.2 |
1.1 |
7.5 |
123 |
| 2 |
0.50 |
16/0.2 |
1.2 |
1.1 |
12.3 |
193 |
| 4 |
0.50 |
16/0.2 |
1.2 |
1.1 |
14.3 |
299 |
| 1 |
0.75 |
24/0.2 |
1.2 |
1.1 |
7.9 |
116 |
| 2 |
0.75 |
24/0.2 |
1.2 |
1.1 |
13.1 |
219 |
| 4 |
0.75 |
24/0.2 |
1.2 |
1.1 |
15.3 |
344 |
| 1 |
1.00 |
30/0.2 |
1.2 |
1.1 |
8.0 |
122 |
| 2 |
1.00 |
30/0.2 |
1.2 |
1.1 |
13.4 |
229 |
| 4 |
1.00 |
30/0.2 |
1.2 |
1.1 |
15.6 |
364 |
