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RE-2X (St)Ymb, Lg, |
Instrumentation cable with static screen flame-retardant,
black and blue
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PV-af Alternative designations :
RE-2X (St)Y
XLPE/OSCR/PVC
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Applications |
These computer cables with flame-retardant
PVC outer sheath and XLPE core insulation
are used for optimum data transmission
for medium transmission rates up to
200 kbits/s in process control and
data processing systems.
Short and
different pitch lengths for the pairs
guarantee favourable crosstalk attenuation
values. Low operating capacitance and
attenuation values enable large transmission
distances and short pulse times.
The static
screen (St) of plastic coated metal foil
protects the circuits from external electrical
interference for compliance with capacitance
unbalance specifications and to assure
an exact pulse transmission. These cables
are suitable for permanent installation
in dry, moist and wet rooms, for outdoor
applications and underground installation.
Characteristic features
• XLPE core
insulation guarantees a low capacitance
value.
• Twisted pairs
with selected pitch lengths guarantee
good crosstalk attenuation values.
• The
black PVC outer sheath is resistant
to UV radiation.
Durability
• The PVC sheath is largely resistant to oils.
• Chemical
resistance of PVC-refer also to the Table of
Technical Guidelines.
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Cable design
Construction designed on the
basis of VDE 0815, VDE 0816
and
KEMA K42, K71 and K102
Conductor :
plain Cu wires, 7-strand
Construction of the conductor: 0.5
mm2 = 7 x 0.3 mm
1.3
mm2 = 7 x 0.49 mm
Insulation :
core insulation of XLPE (Cross-linked
polyethylene), wall thickness 0.4
mm
According
to VDE 0207 part 4
Pair :
2 cores twisted to a pair with short pitch
Pair identification: single colour
with imprinted numbers, a-core black,
b-core white with imprinted numbers
1/1, 2/2 etc.
Lay-up : concentric lay-up
of pairs in layers with optimum pitch
Communications core : XLPE-insulated,
orange for multiple pair version included
in lay-up
Wrapping : of plastic foil,
overlapping
Screen (St) : static screen
of plastic coated metal foil, metal
side on the inside and 1 Cu drain wire
0.5 mm 2 (7 x 0.3 mm) under the metal
foil
Sheath : sheath material of PVC
Sheath colour : black, blue also available(RAL
5015) **)
• Note
* ) other
identification available upon request.
• Note
**) with
blue sheath for intrinsically safe systems
available upon request.
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Technical Data
| Cross section |
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0.5 mm2 |
1.3 mm2 |
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| Conductor resistance max: |
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39.2 |
14.2 Ω/km |
| Insulation resistance min. |
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5 |
5 G Ω .km |
| Operating capacit. at 800 Hz
core/core max. |
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50 |
60 nF/km |
| Attenuation at 800 Hz approx |
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0.88 |
0.62 dB/km |
| Inductance max. |
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0.70 |
0.65 mH/km |
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Crosstalk attenuation |
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| At
60 kHz
min. |
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> 70 dB/km |
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| Operating
voltage max. U |
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300 V |
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| Test voltage AC, 50 Hz |
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| core/core |
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2000 V |
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| core/core |
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2000 V |
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| Minimum bending radius |
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7.5 x cable diameter |
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| Temperature range |
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| Mobile |
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- 5° C
to + 50° C |
| Fixed |
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-40° C
to + 80° C |
| Minimum bending radius |
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approx. 7.5xcable-Ø |
| Radiation resistance |
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80 Mrad (80 x 10
6 cJ/kg) |
Testing: according
to DIN VDE 0472, IEC,
KEMA regulations
Flame
test |
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test class B acc.
to VDE 0472
part 804 and IEC
332-1, IEC 332-3C
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PVC characteristics
(for outer sheath) |
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self-extinguishing
and flame-retardant |
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Dimensions
| PV-af
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Sheath-thickness
mm. approx.
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| 1x2x0.5 |
0.7 |
5.5 |
34 |
2x2x0.5 |
0.8 |
8.5 |
90 |
4x2x0.5 |
0.9 |
10.0 |
108 |
8x2x0.5 |
1.1 |
14.0 |
166 |
12x2x0.5 |
1.2 |
15.5 |
226 |
16x2x0.5 |
1.2 |
17.5 |
289 |
20x2x0.5 |
1.2 |
18.5 |
342 |
24x2x0.5 |
1.2 |
20.0 |
397 |
36x2x0.5 |
1.2 |
23.5 |
569 |
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1x2x0.75 |
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2x2x0.75 |
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4x2x0.75 |
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8x2x0.75 |
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12x2x0.75 |
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20x2x0.75 |
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36x2x0.75 |
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25.5 |
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| 1x2x1.3 |
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2x2x1.3 |
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4x2x1.3 |
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8x2x1.3 |
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16x2x1.3 |
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24x2x1.3 |
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36x2x1.3 |
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1x3x1.3 |
1.1 |
8.5 |
110 |
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2x2x0.5 |
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4x2x0.5 |
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16x2x0.5 |
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20x2x0.5 |
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24x2x0.5 |
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36x2x0.5 |
1.5 |
25.5 |
790 |
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| 2x2x0.75 |
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4x2x0.75 |
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8x2x0.75 |
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1.6 |
30.5 |
951 |
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| 2x2x1.3 |
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| 4x2x1.3 |
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16x2x1.3 |
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20x2x1.3 |
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24x2x1.3 |
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| 36x2x1.3 |
1.7 |
34.0 |
1543 |
| 6x3x1.3 |
1.2 |
18.0 |
334 |
| 12x3x1.3 |
1.5 |
24.5 |
572 |
| Electrical characteristics
Twenkacom (at 20 ° C) |
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mm2 |
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Conduction
resistance |
< 36.8 |
< 24.6 |
< 14.2 |
Ω/km |
| Capacitance of
'af' |
50 |
55 |
60 |
nF/km |
Capacitance
of 2af' |
70 |
80 |
100 |
nF/km |
Induction
at 1 kHz |
0.7 |
0.65 |
0.65 |
mH/km |
Attenuation
at kHz of af' |
0.9 |
0.8 |
0.6 |
dB/km |
Attenuation
at 1 kHz of 2af' |
1.1 |
1.0 |
0.8 |
dB/km |
Speed
loss factor |
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af |
0.56 |
0.56 |
0.53 |
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2af |
0.48 |
0.46 |
0.41 |
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| Crosstalk attenuation
at 1 MHz of af' |
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< 70 |
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dB/km |
| Crosstalk attenuation
at 1 MHz of 2af' |
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< 85 |
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dB/km |
| Insulation resistance |
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> 5 |
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GΩ .km |
| Operating voltage |
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250 |
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V |
| Test voltage |
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2000 |
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V |
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FIDLD OF APPLICATION
Twenkacom signalling
Control
interfacing (RS232, RS422, RS423,
V24, V28 etc) (*)
data-networks(*)
< 1 Mbs.
video signals etc.
(*) depening on the
distance |
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