1100 Volts Three Core Unarmoured Cables
(Aluminium Conductor) Type 'AYY'  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 95 120 150 185 240 300 400 500 630
  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 53 53
2 Shape       Circular  Solid     compaced             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 53 53
  Shape       Circular  Stranded     compaced             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 3.0 3.4
5 Colour Scheme for identification                        Red, Yellow, Blue                
6 Dai over laid up core       10.16 11.68 12.51 13.33 16.34 18.31 21.65 24.44 28.27 30.86 34.50 38.27 43.20 47.99 54.61    
7 Dia over inner sheath       11.16 12.68 13.51 14.33 17.34 19.31 22.65 25.64 29.47 32.26 35.90 39.67 45.20 49.99 56.61    
  Inner Sheath  & Outer Sheath    
  (Applied in one operation)      
8 Type                        PVC Compound Type ST 1 to IS:5831                
9 Colour                       Black              
10 Minimum thickness of inner sheath mm 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.40 0.40 0.40 0.50 0.50 0.60 0.60 0.70 0.70 0.70
11 Nominal thickness of outer sheath mm 1.80 1.80 1.80 1.80 1.80 1.80 2.00 2.00 2.00 2.20 2.20 2.20 2.40 2.60 2.80 3.00 3.40 3.60 4.00
12
Approximate overall diameter of cable mm     14.86 16.38 17.21 18.13 21.54 23.51 26.85 30.34 34.07 36.86 40.90 45.07 51.00 56.19 63.61    
  ELECTRICAL CHARACTERISTICS                                      
13 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 0.0605 0.0469
  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 0.0762 0.0608
14 Continuous current rating (a.c.) of                                       
  cables under standard conditions                                      
  i) When laid direct in ground amps 16 21 28 35 46 60 76 92 110 135 165 185 210 235 275 305 335 360 400
  ii) When laid in ducts amps 14 18 23 30 39 50 63 77 95 115 140 155 175 200 235 260 290 305 340
  iii)When laid in air amps 13 18 23 30 40 51 70 86 105 130 155 180 205 240 280 315 375 410 470
15 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 0.040 0.040
16 Capacitance between conductors per  Micro                                      
  1000m length of cable farad 0.113 0.120 0.130 0.140 0.160 0.180 0.180 0.200 0.200 0.210 0.220 0.230 0.230 0.230 0.230 0.230 0.240 0.240 0.240
17 Minimum volume resistivity of PVC Insu Ohmcm                     1 X 10 13 AT 27 Deg C and 1 x 10 10 at 70 Deg C              
18 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 38.000 47.880
19 Voltage drop per 1000m length of                                       
  cable (assuming three phase a.c. systems)      
  a) When laid direct in ground volts 602 528 431 335 295 238 190 166 147 125 112 99 91 81 76 69 60 54 51
  b) When laid in ducts volts 527 453 354 287 250 198 157 139 127 106 95 83 76 69 65 59 52 45 43
  c) When laid in air volts 489 453 354 287 256 202 175 155 140 120 105 97 89 81 78 71 68 61 59
  GENERAL :    
20 Approximate net weight per                                         
  1000m length of finished cable kg     252 308 352 396 567 685 880 1160 1488 1767 2164 2654 3426 4182 5288    
21 Standard length of cable (Subject to a                                        
  manufacturing tolerance +/-5%) m                 500                 250  
22 Drum Dimensions-                                      
  a) Approximate overall height mm 840 840 840 940 940 1040 1140 1250 1250 1450 1550 1650 1650 1850 2265 1650 1850 2050 2265
  b) Approximate outer width mm 515 665 665 690 690 715 715 855 855 855 910 1130 1130 1180 1420 1130 1180 1240 1350
23 Approximate gross weight of drum kg 125 150 275 215 255 325 395 485 580 780 1005 1230 1435 1830 2640 1420 1865 2340 3050
24 Minimum bending radius for laying of CBL                       12  x  Overall Diameter of Cable                 
25 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                     5 x D2 where D is the Overall Diameter of cable in mm                
STRANDED CONDUCTOR IS ALSO PERMISSIBLE IN THESE SIZES