1100 Volts Twin Core Armoured Cables
(Aluminium Conductor) Type 'AYWY' & "AYFY" to IS:1554(I) - 1988
Sl.     Normal Cross-Sectional Area of Conductor in mm2                    
No. Description Unit  1.5 2.5 4 6 10 16 25 35 50 70 95 120 150 185 240 300 400
  Constructional Details    
  Conductor (Solid)    
1 Minimum number of wires nos. 1 1 1 1 1 6 6 6 6 12 15 15 15 30 30 30 53
2 Shape       Circular  Solid     compacted             Shaped      
             
                                       
  Conductor (Stranded)    
  Minimum number of wires nos. 3 3 3 3 7 6 6 6 6 12 15 15 15 30 30 30 53
  Shape       Circular  Stranded     Compacted             Shaped      
               
                                       
  Insulation    
3 Type                       PVC Compound Type A to IS:5831            
4 Nominal thickness  mm 0.8 0.9 1.0 1.0 1.0 1.0 1.2 1.2 1.4 1.4 1.6 1.6 1.8 2.0 2.2 2.4 2.6
5 Colour Scheme for identification    Red & Black  
6 Dia over laid up core       9.50 10.70 12.50 14.60 13.55 15.03 17.78 19.91 23.18 25.13 28.40 31.33 35.14 39.12 44.15
7 Dia over inner sheath       11.50 12.70 14.50 15.60 14.55 16.03 18.78 21.11 24.38 26.53 29.80 32.73 37.14 41.12 46.15
8 Dia over Armoured (Strip)             17.20 16.15 17.63 20.38 22.71 25.98 28.13 31.40 34.33 38.74 42.72 47.75
9 Dia over Armoured (Wire)       14.30 15.50 17.30 18.80 17.75 19.23 21.98 24.31 27.58 29.73 33.00 35.93 40.34 44.32 49.35
  Inner Sheath     
10 Type        Extruded                    Wrapped        
11 Material       Unvulcanised Rubber                   PVC Taps        
12 Minimum Thickness  mm 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.4 0.4 0.4 0.5 0.5 0.6 0.7
  Armouring                                  
13 Type & Material     Single Layer of Round    Single Layer of Flat Galvanised Steel Strip   
          Galvanised Steel Wires      
14 Nominal Diamtr of wire /thickness of strip  mm 1.4 1.4 1.4 1.4 1.4 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8
  Outer Sheath                                    
15 Type                       PVC Compound Type ST 1  to IS:5831            
16 Colour                       Black            
17 Minimum Thickness mm 1.24 1.24 1.24 1.24 1.24 1.40 1.40 1.40 1.40 1.56 1.56 1.56 1.72 1.72 2.04 2.20 2.36
18
Appr overall diameter of cable (Strip) mm           19.90 18.85 20.33 23.08 25.41 28.98 31.13 34.40 37.33 41.74 46.04 51.07
  Appr overall diameter of cable (Wire) mm     17.00 18.20 20.00 21.50 20.45 21.93 24.68 27.31 30.58 32.73 36.00 38.93 42.60 47.64 52.67
  ELECTRICAL CHARACTERISTICS                                    
19 Resistance of conductor per                                     
  1000m length of completed cable      
  a) Maximum d.c. resistance at 20 Deg C ohm 18.1 12.1 7.41 4.61 3.08 1.91 1.20 0.868 0.641 0.443 0.320 0.253 0.206 0.164 0.125 0.1 0.0778
  b) a.c. resistance at 70 Deg. C ohm 21.72 14.52 8.89 5.53 3.70 2.29 1.44 1.042 0.77 0.532 0.385 0.304 0.248 0.198 0.152 0.122 0.0962
20 Continuous current rating (a.c.) of                                     
  cables under standard conditions                                    
  i) When laid direct in ground amps 18 25 32 40 55 70 90 110 135 160 190 210 240 275 320 355 385
  ii) When laid in ducts amps 16 21 27 34 45 58 76 92 115 140 170 190 210 240 275 305 345
  iii)When laid in air amps 16 21 27 35 47 59 78 99 125 150 185 210 240 275 325 365 420
21 Reactance per 1000m length of cable                                    
  at 50 Hz ohm 0.092 0.087 0.081 0.073 0.064 0.055 0.054 0.05 0.05 0.046 0.043 0.042 0.042 0.042 0.041 0.040 0.040
22 Capacitance per 1000 m length of cable  Micro                                  
    farad 0.31 0.34 0.38 0.43 0.52 0.63 0.67 0.75 0.76 0.88 0.89 0.98 0.98 0.98 1.03 1.04 1.08 1.92
23 Minimum volume resistivity of PVC Insu ohm-cm                     1 X 10 13 AT 27 Deg C and 1 x 10 10 at 70 Deg C            
24 Maximum permissible shortcircuit  kilo                                   
  current for duration of one second amps 0.114 0.190 0.304 0.456 0.760 1.216 1.900 2.660 3.800 5.320 7.220 9.120 11.400 14.060 18.240 22.800 30.400
25 Voltage drop per 1000m length of                                     
  cable (assuming cable used on single        
  phase a.c. systems)                                    
  a) When laid direct in ground volts 782 726 570 442 408 320 260 228 208 170 148 128 120 112 100 92 80
  b) When laid in ducts volts 696 610 480 376 334 266 218 192 178 150 132 116 106 98 86 78 72
  c) When laid in air volts 696 610 480 388 348 270 224 206 192 162 144 128 120 112 102 94 88
  GENERAL :    
26 Approximate net weight per                                     
  1000m length of finished cable (Strip) kg           603 649 756 945 1019 1414 1644 1947 2299 2870 3345 4179
  Approximate net weight per                                     
  1000m length of finished cable (Wire) kg     516 579 678 809 844 969 1186 1394 1717 1970 2310 2694 3344 3933 4731
27 Standard length of cable (Subject to a                                    
  manufacturing tolerance +/-5%) m                     500         250 250
28 Drum Dimensions-                                    
  a) Approximate overall height mm 840 940 940 1040 1040 1140 1140 1140 1250 1250 1450 1450 1650 1650 1850 1550 1650
  b) Approximate outer width mm 665 690 690 715 715 715 715 715 855 855 855 855 1130 1130 1180 910 1130
29 Approximate gross weight of drum kg 265 310 355 400 455 400 455 490 615 735 935 1060 1345 1570 2020 1105 1475
30 Minimum bending radius for laying of CBL                       12  x  Overall Diameter of Cable             
31 Recommended pulling force:                                    
  a) When conductor pulled by pulling eye N                     30 x Total Conductor Area in mm2            
  b) When cable pulled with stocking N                     9 x D2 where D is the Overall Diameter of cable in mm            
STRANDED CONDUCTOR IS ALSO PERMISSIBLE IN THESE SIZES