TLS-IB Site Prep Manual Cable Specifications
15
Cable Specifications
The cable type tables listed below form part of the individual system ATEX approval. Substitution of cable may
impair intrinsic safety and may invalidate system approval.
A ll spec ifica ti o n s are in f re e ai r at +30°C :
Table 2. Probe Cable Specification (V-R P/N 222–001–0029) - Maximum of 305 metres per probe
Number of Cores 2
Conductors Bare copper, 24/0.20mm, diameter 1.1mm
Insulation PVC R2 to CEI 20-11, colour black 1/black 2, radial thickness 0.54mm, twisting 1x 2, lay pitch 76mm
Shielding Aluminium polyester tape, tinned copper drain wire 7/0.30mm
Sheath PVC RZ FR hydrocarbon resistant, colour blue, radial thickness 0.80mm
Diameter 6.10mm
Conductor Resistance 25 ohm/km
Drain Wire Resistance 15 ohm/km
Capacitance 0.14
μ
F/km (140 pF/m)
Inductance 0.65 mH/km (0.65
μ
H/m)
LR Ratio 17
μ
H/ohm
Insulation Resistance 1050 Mohm/km
Voltage Core to Core 500
Voltage Core to Screen 500
Voltage Earth to Screen 500
Voltage Test 1kV/1 minute
Standard IEC 227-74
Table 3. Data Transmission Cable Specification (V-R P/N 4034-0147)
Cable Type 2 x twisted pair, PVC insulated, foil wrapped, common drain
Conductor Stranding 7/0.25mm
Characteristic Impedance 58 ohms
Capacitance 203 pF per metre
Attenuation 5.6 dB per 100 m
Operating Temp. Range –30°C to +70°C
Insulation PVC
Sheath Polyethylene
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