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Cable Specification Sheet DIN VDE 0815 · Rev 01 · 2026-06

J-Y(St)Y indoor telephone cable

Ordering reference  J-Y(St)Y indoor telephone cable

DIN VDE 0815 J-Y(St)Y indoor telephone cable

Application

Indoor telephone systems · Intercom wiring · Building communication · Low-level signal circuits

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Indicative 10-pair construction — copper conductor · screened, not to scale

Construction

  1. 1
    Conductor (per core)Solid bare copper conductor · 1 × Ø1.01 mm · IEC 60228 cl.1
  2. 2
    Pair insulationPVC core insulation · Wall PVC core insulation mm
  3. 3
    FillerBedding / filler
  4. 4
    Overall screen (OS)Al/polyester foil + drain
  5. 5
    SheathPVC outer sheath

Technical parameters

Pair count10 pair
Conductor diameter0.8 mm
Conductor constructionSolid bare copper conductor
Pair / unit construction1 x 10 pair unit + earth option
Screen / moisture protectionStatic foil screen with drain wire
InsulationPVC core insulation
Outer sheathPVC outer sheath
Electrical referenceConfirm to cable standard, VDE indoor telephone capacitance and resistance reference
OD guide11.2 mm
Weight guide103 kg/km
Conductor materialSolid bare copper conductor
Operating temperature−15 °C to +70 °C
Bend radius8 x OD during installation
Max DC resistance at 20 °C24.50 Ω/km
Mutual capacitance (nom.)≈ 120 pF/m core/core · 200 pF/m core/screen (nominal)
Routine test voltage2.5 kV a.c. 5 min

Ratings & materials

StandardDIN VDE 0815
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