SPZ (N) X 0,9 (1,4) SEZ (N) X 0,9 (1,4)
according to JŽS 52.011

Aplication

These cables are applied for connection of railway station signal-safety units on electrified main railway single-stage system of 25 kV with 50 Hz and d.c.system of 3000 V .Cable can be buried directly into ground , tubes , ducts and indoor.

Permissible temperature ranges:
at laying from -5 up to + 50 ° C before and after laying up to +70°C i posle

Make -up

Copper conductor 0.9 or 1.4 mm, pvc (p)or PE insulation(E) 0.5 AND 0.6 mm dia. thickness.Wire are twisted to cable core at concentric layers.Individual layers are wrapped with textile threads or plastic ribbon in the form of an open helix, inner PVC sheath.Protection against mechanical damages of a galvanized steel tape 0.2 mm thickness up to 0.2mm for cables up to 8 cores and 0.3 mm for cables exceeding 8 cores.Black outer PVC sheath.

COUNTING

Wire are counted from the inner layer towards outer cable layers. Wire for counting each layer being coloured separetely.Marking wire of outer layer is red coloured and remaining ones blue. All other wires are grey.

Twisting of cable core

Designations

Railway station-station cablesw in technical and relevant documentation are defined as followed : SPZ (N) x d and
SEZ (N) x d
where
S - Railway station- safety cable
P - PVC insulation
E - Pe insulation
Z - Steel tape protection
N - wire number in cable.
d - Conductor diameter in mm
Example
12 wires railway station signal-safety and conductor 0.9 mm dia. are designated as:
SPZ 12 x 0,9 . . . JŽS 52.011
SEZ 12 X 0,9 . . . JŽS 52.011