Operating temperature
-40 °C to +90 °C

Minimum bending radius
Not armoured type:
12 times the outer diameter.
Armoured type:
15 times the outer diameter.

Applicable Standards
EN 50288-7 Basic design
IEC 60331-23 Fire resistant
IEC 60332-1 Flame retardant
IEC 60332-3 Fire retardant (cat. C or A according to requirements)
IEC 60754-1 Halogen free properties
IEC 61034-2 Low smoke emission

Cable construction
Conductors
Plain annealed electrolytic copper wire according to EN
60228 class 2 (R) stranded.

Insulation
Mica/Glass tape plus XLPE.

Twisting
The insulated cores shall be twisted in pairs for a good
reduction of the electromagnetic noise.

Cabling
The pairs are cabled with suitable non hygroscopic
fillers (when necessary) and wrapped with polyester tape
if required.

Overall screen
Aluminium/polyester tape, coverage >100%, aluminium in
contact with tinned copper drain wire.

Armoured
Inner sheath: PE, PVC or LSZH thermoplastic material.
Armour: Single layer of galvanized steel wires (SWA).

Outer sheath
LSZH thermoplastic material.

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Firecel SR 225 are designed, manufactured and tested
as data transmission cables for emergency services.
These fire resistant instrumentation cable are used for data, voice and signal transmission
when high frequency signal has to be assured also in
the event of a fire.