RD-H(St)H

Bd instrumentation cable, halogen-free

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Technical data
  • Halogen free data transmission cable
    adapted to DIN VDE 0815
  • Coductor resistance (loop)
    max. 73,6 Ohm/km (0,5 mm²)
    max. 36,8 Ohm/km (1 mm²)
  • Temperature range
    flexing -5°C to +50°C
    fixed installation -30°C to +70°C
  • Operating peak voltage  max. 225 V
    (not for heavy current installation purposes)
  • Test voltage
    core/core  500 V
    core/screen  2000 V
  • Insulation resistance
    min. 100 MOhm x km
  • Mutual capacitance  at 800 Hz
    max. 100 pF/m
    (this value may be exceeded by
    20% with a make-up to 4 pairs)
  • Impedance
    at 1 kHz (nominal values)
    450 Ohm (0,5 mm²)
    320 Ohm (1 mm²)
  • Capacity unbalance  at 800 Hz
    max. 200 pF/100 m
    (20% of the values, but one
    value up to 400 pF is allowed)
  • Cross-talk attenuation
    at min. 10 kHz, 60 dB/500 m
  • Line attenuation
    at 1 kHz (nominal values)
    1.2 dB/km (0,5 mm²)
    0.9 dB/km (1 mm²)
  • Minimum bending radius
    7,5x cable Ø
  • Radiation resistance
    up to 100x106 cJ/kg (up to 100 Mrad)
Cable structure
  • Bare copper conductor, multi wires
  • Conductor construction:
    0,5 mm² = 7x0,3 mm
    1 mm² = 7x0,43 mm
  • Core insulation of halogen-free
    polymer compound
  • Core identification coloured
    pair-no.1: a-core = BU; b-core = RD
    pair-no.2: a-core = GY; b-core = YE
    pair-no.3: a-core = GN; b-core = BN
    pair-no.4: a-core = WH; b-core = BK
  • Cores twisted in pairs, with short lay length
    (approx. 20 pitch/m ≙ 50 mm)
  • 4 pairs stranded to a unit
    (unit labelled with numbers
    printed plastic helix)
  • Units stranded in concentric layers
  • Foil wrapping
  • Electrostatic screen of plastic coated
    aluminium foil and drain wire tinned, 0,5 mm²
  • Outer sheath of halogen-free, polymer
    compound, flame resistant
  • Sheath colour: grey (RAL 7032)
Properties
  • The static screen protects the transmission
    circuits against outer electrical interferences
  • The halogen-free cables prevent the fire
    propagation and compared to PVC cables
    exist only a low smoke density under flame
    influence
  • This results no decomposition products which
    destroy equipments, machines and buildings
    by corrosion
Tests
  • Flame test acc. to
    DIN VDE 0482-332-3 / BS 4066-3 /
    DIN EN 60332-3 / IEC 60332-3
  • Corrosiveness of combustion gases
    acc. to DIN VDE 0482-267 /
    DIN EN 50267-2-2 / IEC 60754-2
  • Smoke density acc. to
    DIN VDE 0482-1034-1+2 / BS 7622-1+2
    DIN EN 61034-1+2 / IEC 61034-1+2
Note
  • AWG sizes are approximate equivalent
    values. The actual cross section is in mm².
Application
The halogen-free data transmission cable RD-H(St)H are used for measurement and control technology for transmission of analog and digital signals up to frequencies of approx. 10 kHz. The twisted pairs with short pitches (<50 mm for 0,5 mm²) and different lay lengths which lead good cross-talk attenuation values in a unit. These cables are used in inside buildings (in special cases in open air, but with sufficient protection against sunlight is necessary).
CE = Product conforms with Low-Voltage Directive 2014/35/EU.
Downloads
Data sheet
Certificate of compliance

Part no.

No.pairs x
cross-sec.
mm²

Outer Ø

approx. mm

Cop.
weight

kg / km

Weight

approx. kg / km

AWG-No.

20200

2 x 2 x 0,5

7,0

26,0

70,0

20

20201

4 x 2 x 0,5

9,0

46,0

110,0

20

20202

8 x 2 x 0,5

11,6

86,0

190,0

20

20203

12 x 2 x 0,5

13,5

127,0

240,0

20

20204 </