UNIT TYPE CONTROL CABLES FOR POWER STATIONS Technical Data sheet
  

 

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APPLICATIONS

RD-Y(St)Y  Bd are unit type control cables intended for analogue or digital data transmission up to 10 kHz.

Pair lay lengths are designed to ensure minimum near-end cross-talks in units.

An electrostatic shield protects the cables against interference by external electric fields.

The cables are suitable for indoor installations connecting fixed and movable equipment.

The cables are also suitable for Maxi-Termi-Point jointing technique.

CONSTRUCTION

- flexible, multiwire conductors, stranded of bare annealed copper wires (tin-plated on request), regular construction 7 wires,

- PVC insulation,

- insulated conductors twisted into pairs, star-quad assembly in the case of two-pair cable, colour of insulated conductors:

 

"a" wire

"b" wire

1

  blue

red

2

  grey

yellow

3

green

brown
4

white

black

- four pairs stranded into a unit and bound up with a polypropylene binder marked with unit number,

- units laid-up into a cable core,

- cable core wrapped in polyester tape,

- overall electrostatic shield incorporating aluminium-polyester tape and stranded annealed tinned copper drain wire, cross-section the same as conductor,

- PVC cable sheath, grey RAL 7001, other colours also available.

AVAILABLE UPON REQUEST

RD-Y(St)Yv  Bd - cables with enhanced PVC sheath, suitable for outdoor installation and direct earth burial.

RD-Y(St)YY  Bd - cables with double PVC sheath, suitable for outdoor installation and direct earth burial.

RD-H(St)H  Bd - halogen free cables, applied when higher safety in case of fire is required. The cables are flame retardant, their smoke emission in fire is low and released gases are not corrosive.

 

CHARACTERISTICS

Operating voltage, peak value

Voltage test

        conductor/conductor

        conductor/screen

DC loop resistance at 20°C,
maximum

                0.50 mm2 conductor

                1.0 mm2   conductor

Insulation resistance, minimum

Current-carrying capacity limit

                0.50 mm2 conductor

                1.0 mm2   conductor

Mutual capacitance at 800 Hz, maximum

Near-end cross-talk at 10 kHz, minimum

Characteristic impedance, nominal

        at 1 kHz

        at 10 kHz

Attenuation loss, nominal

        at 1 kHz

        at 10 kHz

600 V

 

2.0 kV rms

2.0 kV rms

 

 

73.6 Ω/km

36.8 Ω/km

100 MΩ·km

 

6 A

12 A

 

100 nF/km*)

 

60 dB/km

 

370 Ω

130 Ω

 

1.2 dB/km

3.0 dB/km

Operating temperature range

      for fixed installation

      for movable installation

Minimum bending radius

Cable combustibility

Combustibility tests

Reference standards

 

from - 30 to + 80°C

from   - 5 to + 70°C

10 x cable diameter

flame retardant

PN-EN 60332-1-2, IEC 60332-1-2

DIN VDE 0815

*)  this value can be higher by 20 % in four or less pair cable

 

The cable meets requirements of the low voltage directive 2014/35/EU

Other cross-sections and pair counts available on request.

TECHNOKABEL S.A. reserves the right to change specifications without prior notice.