J-Y(ST)Y...LG fire alarm cable

Installation cable in accordance with DIN VDE 0815 with red outer sheath

J-Y(ST)Y...LG fire alarm cable - installation cable according to VDE 0815 with red sheath, specifically for use as a fire alarm cable

Interference signals

Article number Number of pairs and conductor diameter (mm) Outer diameter [mm] Copper index (kg/km) Weight (kg/km)
J-Y(ST)Y...LG fire alarm cable
1708001 1 x 2 x 0.8 6 11 40
1708002 2 x 2 x 0.8 7 21 60
1708004 4 x 2 x 0.8 9 41 100
1708010 10 x 2 x 0.8 13.5 102 220


  • The cable is marked with the phrase "Fire alarm cable” at regular intervals on the sheath. It is therefore specifically used for installation in fire alarm systems.
  • Static shield made of aluminium-laminated plastic film with drain wire minimises the interference of high frequency, electromagnetic fields
  • Decoupling of circuits by means of
    twisted-pair (TP) design (crosstalk effects)

Application range

  • This installation cable is used to transmit signals.
  • For fixed installation on and under plaster, in dry and damp rooms
  • If installing outside, this cable should be installed under plaster only

Product features

  • The 2-pair version (2 x 2 x 0.8) is twisted into a star quad
  • Flame-retardant according to IEC 60332-1-2

Norm references / approvals

  • Based on DIN VDE 0815Type J-Y(ST)Y...LG


  • Solid bare copper conductor
  • Core insulation made of PVC
  • Cores twisted in pairs,
    pairs twisted together,
    foil wrapping over the cable core,
    static shield made of aluminium-laminated plastic film with copper drain wire
  • Outer sheath made of PVC
    Outer sheath colour: flame red (RAL 3000)


  • ETIM 5.0 Class-ID: EC000829
  • ETIM 5.0 Class-Description: Telecommunication cable

Core identification code

  • according to VDE 0815, see appendix T10

Peak operating voltage

  • (not for power applications)
    300 V


  • (800 Hz): K1: 80% ≤ 300 pF/100m

Conductor cross-section in

  • 0.8 mm: 0.50 mm²

Cable attenuation/attenuation

  • 0.8 mm: 1.1 dB/km

Minimum bending radius

  • Fixed installation:
    10 x outer diameter

Test voltage

  • Core/Core: 800 V
  • Core/Shield: 800 V

Loop resistance

  • max. 73.2 ohm/km

Temperature range

  • Occasional flexing: -5°C to +50°C
  • Fixed installation: -30°C to +70°C

Unless otherwise specified, the product values shown are nominal values. You can receive further values, such as tolerances, upon request if they available and have been released for publication.
Copper price basis: EUR 100/100 kg; see catalogue appendix T17 for the application and definition of "Metal price basis" and "Metal index"
Please find our standard lengths at: www.lappkabel.de/en/cable-standardlengths
Packaging: Ring ≤ 30 kg or ≤ 250 m, otherwise drum
Photographs are not to scale and do not represent detailed images of the respective products.