Digicode 30KHz Indoor Signalling Cables
Application
The cables are designed for transmission of track circuit digicode signals up to 30 kHz in electrifi ed lines.
Standards
● EN 50266-2-4 & IEC 60332-3(Fire performance)
● EN 50268-2(Smoke density)
● EN 50267-2-1(Halogen content)
● EN 50267-2-2(Gases acidity)
● EN 50265-2-1, IEC 60332-1, NFC 32070 Cat C2 compliant (for PVC sheathed cables)
Construction
Conductors
Solid Annealed copper, 1.4 mm nominal diameter (0.6 mm for the auxiliary pair).
Insulation
Polyethylene.
Cabling Element
Two insulated conductors are twisted together to form a pair.
Stranding
Pairs are helically stranded to get the cable core.
Core Wrapping
Plastic tape(s) with overlapping.
Inner Sheath
Low density polyethylene.
Moisture Barrier
Copolymer coated laminated aluminium tape.
Intermediate Sheath
LSZH fi re retardant compound. PE or PVC option can be offered upon request.
Mechanical Protection
Two helically applied steel tapes.
Outer Sheath
LSZH fi re retardant compound. PE or PVC option can be offered upon request.
Electrical Characteristics at 20℃
| Nominal Conductor Diameter |
mm |
1.4 |
| Maximum DC Conductor Resistance |
Ω/km |
12.1 |
| Maximum Resistance Unbalance |
% |
3 |
| Minimum Insulation Resistance @500 V DC (1min) |
MΩ.km |
5000 |
| Dielectric Strength (DC voltage 1 min) |
|
|
| Conductor to Conductor |
V |
1000 |
| Conductor to Screen |
V |
3000 |
| Minimum Spark Test On Outer Sheath (AC voltage) |
V |
5000 |
| Maximum Mutual Capacitance (Data pairs) |
nF/km |
45 |
| Nominal Mutual Capacitance (Auxiliary pair) |
nF/km |
50 |
| Maximum Capacitance Unbalance |
|
|
| Pair to Pair |
nF/500m |
400 |
| Pair to Ground |
nF/500m |
1500 |
| Maximum Characteristic Pair Attenuation |
|
|
| @2.1KHz |
dB/km |
0.64 |
| @4.1KHz |
dB/km |
0.76 |
| @9.5KHz |
dB/km |
1.05 |
| @20.7KHz |
dB/km |
1.28 |
| Minimum Near End Crosstalk Attenuation (NEXT) |
|
|
| @4.1KHz |
dB/km |
54 |
| @20.7KHz |
dB/km |
42 |
| Minimum Far End Crosstalk Attenuation (FEXT) |
|
|
| @4.1KHz |
dB/km |
59 |
| @20.7KHz |
dB/km |
48 |
| Minimum Unbalance Attenuation |
dB |
40 |
| Maximum Rated Voltage, between pair conductors |
V rms |
220 |
| Maximum Rated Current |
A rms |
1 |
Mechanical and Thermal Properties
Minimum Bending Radius: 8×OD (static); 16×OD (dynamic)
Temperature Range: -40℃ to +60℃ (during operation); -20℃ to +50℃ (during installation) |
