Signal Cables And Cables For Measuring-Regulating Technique

PVC INSULATED SHEATHED AND SHIELDED SIGNAL CABLE
S-Y(St)Y

according to VDE 0813/11.71

Application

Permissible temperature ranges:
During laying -5 up to +50° C
Before and after laying + 70 ° C
Make - up
Copper conductor 0.6 mm dia.
Pvc insulation (y)
Cores twisted to paires ,triples, quads.
5 paires, 5 triples, 5 quads or 5 quintiples twisted to basic group.
Basic group twisted to cable core. Individual ywisting elements are in outer layer between groups.
Belt insulation of min. one termoplstic tape.Longitudinal copper wire 0.4 mm dia. For cables up to 20 cores an d 0.6 mm for cables execeeding 20 cores.
Aluminium tape and PVC tape wrappingPVC outer sheath grey coloured(Y).

This type of cable serves as a connection cable between racks as well as between racks and main distribution frame for transmission of information and signals in low- frequency area.

COLOUR CODING

For signal cables marking of a a-and b-wire makes the basic colour and characteristic colour is being coated in the form of a ring.

Basic and characteristic colours are specified in the follwing Table:

Current number of stranding elements Characteristic colour
a-core a- 1		 Basic colour
b-core
1 2 3 4 5 bela.gif (153 bytes)
6 7 8 9 10 zuta.gif (213 bytes) bela.gif (153 bytes)
11 12 13 14 15 bela.gif (153 bytes)
16 17 18 19 20 bela.gif (153 bytes)
21 22 23 24 25 bela.gif (153 bytes)
26 27 28 29 30
31 32 33 34 35 zuta.gif (213 bytes)
36 37 38 39 40
41 42 43 44 45
46 47 48 49 50
zuta.gif (213 bytes)

Example: By the 8 stranding elements a-core is white with yellow ring, b-core is white with  green ring.

Characteristic colour
b- wire

All c- wires are red, all d- wires are pink and all e- wires are black.
 

COUNTING

Counting of twisting elements runs towards number of elements according to determined basic and characteristic colour. At stranding in layers, elements are arrenged in such a manner that they are being counted starting from the outer layer through all other layers in the same direction towards cable centre.

At group twisting the groups are arranged in such a manner that they are being counted starting from the group in the outer layer and through all layers in the same direction running from one to the next group towards colour arrengement.

Twisting elements which do not appertain to the groups are counted at the and.

SIZES AND WEIGTHS

  Cable   Dia. Under PVC sheath ,approx.
mm		   PVC sheath thickness
mm		   Outer dia. Approx.
mm		   Cable weigth Approx.
kg/km		  
  S-Y[St)Y Signal cable with conductor 0.6 mm , insulation thickness 0.2 mm  
 

Pairs

 
  3   3,5   0,8   5,5   45  
  5   5,0   0,8   7,0   60  
  6   5,0   0,8   7,0   70  
  1a   6,0   0,8   8,0   100  
  12   8,5   0,8   8,5   115  
  15   7,0   0,8   9,0   140  
  16   7,5   0,8   9,5   150  
  20   8,5   0,8   10,5   180  
  22   9,0   0,8   11,0   195  
  24   9,0   0,8   11,0   210  
  25   10,0   0,8   12,0   225  
  30   10,5   1,0   12,5   265  
  32   11,0   1,0   13,0   285  
  40   12,0   1,0   14,0   345  
  50   13,5   1,0   15,5   415  
 

Triples

  
  5   5,5   0,8   7,5   85  
  10   7,5   0,8   9,5   145  
  18   10,0   0,8   12,0   235  
  20   10,0   0,8   12,0   255  
  21   10,5   1,0   13,0   275  
  25   11,5   1,0   14,0   320  
  28   12,0   1,0   14,5   355  
 

Quads

  
  20   12,5   1,0   15;0   350  
  25   13 5   1 0   15 5   425  
 

Quintiples

  
  10   11,0   1,0   13,0   240  

 

Electrical characteristics at 20° C

Characteristics

Value

Loop resistance , max. Ohm/km

130

 
Insulation resistance min . Mohm.km °
 

at C20°

100

na 50° C

1

Mutual capacity at 800 Hz ,max. nF/km

120

Capacitance unbalance (k) at 800 Hz , max. pF/100 m

50

Capacitance unbalance (e) at 800 Hz max. pF/100 m

150*

Testing voltage

 

Wire/ wire , Ueff, V

800

Wire/ shield , Ueff, V

800

Operating voltage, Ueff,max. V

200

  • In the case of cables exceeding 4 twisting elements, 10 % of value and min. one may amount max. 300 Pf .

  • Designations
    S = signal cable
    Y = Core insulation and PVC sheath resp.

  • (St)=metal foil shield
    Example of an order
    30 core signal cable with conductors 0.6 mm , PVC insulation , twisted to triples , with static shield and PVC sheath is being ordered as

  • S-Y(St)-Y 30 x 3 x 0.6 0,6 mm