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Size in
s mm
Single
Phase
Three
Phase
Size in
s mm
Single
Phase
Three
Phase1.5 20 18
2.5 29 24 2.5 21 19
4 37 31 4 27 25
6 48 41 6 35 32
10 66 56 10 48 43
16 86 73 16 65 58
25 115 97 25 84 74
35 142 119 35 105 90
50 168 147 50 125 115
70 209 180 70 150 135
90 257 219 95 185 165
120 295 257 120 210 190
150 337 295 150 240 215
185 390 333 185 280 250
240 461 399 240 325 295
300 523 451 300 380 340
400 589 523 400 460 415
CURRENT CARRYING
CAPACITY FOR COPPER
CABLES
CURRENT CARRYING
CAPACITY FOR ALUMINUM
CABLES
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12x2 23.5 0.209 12x2 110 20015x2 29.5 0.262 15x2 140 200
15x3 44.5 0.396 15x3 170 300
20x2 39.5 0.351 20x2 185 315
20x3 59.5 0.529 20x3 220 380
20x5 99.1 0.882 20x5 295 500
25x3 74.5 0.663 25x3 270 460
25x5 124 1.11 25x5 350 600
30x3 89.5 0.796 30x3 315 540
30x5 149 1.33 30x5 400 700
40x3 119 1.06 40x3 420 710
40x5 199 1.77 40x5 520 900
40x10 399 3.55 40x10 700 1350
50x5 249 2.22 50x5 630 1100
50x10 499 4.44 50x10 920 1600
60x5 299 2.66 60x5 760 1250
60x10 599 5.33 60x10 1060 1900
80x5 399 3.55 80x5 970 1700
80x10 799 7.11 80x10 1380 2300
100x5 499 4.44 100x5 1200 2050
100x10 999 8.89 100x10 1700 2800
120x10 1200 10.7 120x10 2000 3100
160x10 1600 14.2 160x10 2500 3900
220x10 2000 17.8 220x10 3000 4750
12x2 23.5 0.0633 12x2 80 140
15x2 29.5 0.0795 15x2 95 170
15x3 44.5 0.12 15x3 115 210
20x2 39.5 0.107 20x2 120 220
20x3 59.5 0.161 20x3 145 270
20x5 99.1 0.268 20x5 195 350
25x3 74.5 0.201 25x3 180 330
25x5 124 0.335 25x5 230 430
30x3 89.5 0.242 30x3 205 385
30x5 149 0.403 30x5 270 500
40x3 119 0.323 40x3 280 500
40x5 199 0.588 40x5 350 650
40x10 399 1.08 40x10 515 975
50x5 249 0.673 50x5 425 780
50x10 499 1.35 50x10 625 1150
60x5 299 0.808 60x5 500 900
60x10 599 1.62 60x10 730 1330
80x5 399 1.08 80x5 680 1170
80x10 799 2.16 80x10 940 1700
100x5 499 1.35 100x5 820 440
100x10 999 2.7 100x10 1150 2050
100x15 1500 4.04 100x15 1450 2500
120x10 1200 3.24 120x10 1350 2400
120x15 1800 4.86 120x15 1650 2900
160x10 1600 4.32 160x10 1750 3000
160x15 2400 6.47 160x15 2100 3600
200x10 2000 5.4 200x10 2150 3650
200x15 3000 8.09 200x15 2550 4200
Thicknes
s in mmKg./sq.M
5 39.2
10 3.15 24.7 10 7 55
12 2.5 19.61 12 10 78.5
14 2 15.69 14 12 94.2
16 1.66 12.55 16 14 109.9
18 1.25 9.8 18 16 125.6
20 1 7.84 20 18 141.3
22 0.8 6.27 22 20 157
24 0.63 4.94 24 22 172.7
26 0.5 3.91 26 25 196.2
width in
mm.3 5 6 8 10
12 0.28 0.5 0.6 0.8 0.9
25 0.6 1 1.2 1.6 2
32 0.8 1.3 1.5 2 2.5
40 0.9 1.6 1.9 2.5 3.1
50 1.2 2 2.4 3.1 3.9
Beam
150x80 14.9
175x90 19.3
200x100 25.4
Wt.in
K ./Mtr
ISMC 75 75x40x4.4 6.8
ISMC 100100x50x4.
79.2
ISMC 125 125x65x5
ISMC 150 12.7
150x75x5.
416.5
Size in
mm
Cross
Sectional
Area in
MM2
Weight
(Approx)
kg / Metre
Weight of Steel Sheets Weight of Steel Plates
SWGThicknes
s in mmKg./sq.M SWG
Copper Bus Bars : Current
Carrying Capacity
Size in
mm1 Bus 2 Bus
Copper Bus Bars :
Constructional Details
Aluminum Bus Bars :
Constructional Details
Aluminium, Bus Bars : Current
Carrying Capacity
2 BusSize in
mm
Cross
Sectional
Area in
MM2
Weight
(Approx)
kg / Metre
6).Equal Angle
5).Channels
Size in
mm1 Bus
Wt.in Kg.
/
Size in
mm
M.S.Flat weight in kg./M.
Thickness in mm
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(in
mmxmm
xmm
(in
mmxmm
xmm25x25x3 -1.1 50x50x3 -2.3
25x25x4 -1.4 50x50x4 -3
25x25x5 -1.8 50x50x5 -3.8
40x40x3 -1.8 50x50x6 -4.5
40x40x4 -2.4 75x75x5 -5.7
40x40x5 -3 75x75x6 -6.840x40x6 -3.5 75x75x8 -8.9
J for
joule
KWH for
kilowatt
hour
KFM
kilogram
force
metre
KEAL
kilocalori
e
HPH
horsepo
wer hour
FT (foot
pound
force)
BTU(briti
sh
thermal
unit
J 10.2778x10
6 0.1011970.23885x1
04
0.37767x1
06 0.73756
0.94782x1
04
kWh 36x106 1
0.3671x106 859.85 1.3596
2.6552x106
3.4142x104
kfm 1 2.7241x106 1 2.3423x106 3.7037x106 7.233 9.2949x104
keal 9.8066 1.163x106 426.94 1
1.5312x103
3.0880x104 3.9683
hph4.1868x10
3 0.7355 0.27x106 632.42 1
1.9529x106
2.5096x103
f t-ibf 1.35580.37662x1
06 0.13826
0.32383x1
03
0.51206x1
06 1
1.2851x104
Btu 1.055x103
0.29307x1
06 107.59 0.252
0.39847x1
03 778.17 1
WNewton
kgfm/skeal/s keal/h
hp.metric
horsepo
wer
hp.
horsepo
wer
ft x lbf/s Btu/h
W 1 1.101970.23885x1
03 0.85985
1.3596x103
1.3410x103 0.73756 3.4121
kgfm/s 9.8066 1 2.34x104 8.4322
13.333x103
13.151x103 7.233 33.462
keal/s4.1868 x
104 426.94 1 3.6x104 5.6925 5.6146
3.0880x104
14.286x103
keal/h 1.163 0.118590.27778x1
04 1
1.5812x104
1.5596x103 0.85779 3.9683
hp,metric 735.5 75 0.17567 632.42 1 0.98632 542.482.5096x10
4
hp, 745.7 76.04 0.17811 644.19 1.0139 1 5502.5444x10
4
f t x lbf/s 13558 0.13826
0.32383x1
04 1.1658
1.8434x10
4
1.8182x10
4 1 4.6262
Btu h 0.2930729.885x10
4
69.999x106 0.2522
0.39847x1
04
0.39302x1
03 0.21616 1
POWER
QUANTITIES AND UNITS CONVERSION TABLES
ENERGY
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1).Sheets
SWG Thickness in mm K ./s .M
10 3.15 24.7
12 2.5 19.61
14 2 15.69
16 1.66 12.55
18 1.25 9.820 1 7.84
22 0.8 6.27
24 0.63 4.94
26 0.5 3.91
2).Plates
Thickness in mm Kg./sq.M
5 39.2
7 55
10 78.5
12 94.2
14 109.9
16 125.6
18 141.3
20 157
22 172.7
25 196.2
3)M.S.Flat weight in kg./M.
width in mm. Thickness in mm
3 5 6 8 10
12 0.28 0.5 0.6 0.8 0.9
25 0.6 1 1.2 1.6 2
32 0.8 1.3 1.5 2 2.5
40 0.9 1.6 1.9 2.5 3.1
50 1.2 2 2.4 3.1 3.9
4).Beam
150x80 14.9175x90 19.3
200x100 25.4
5).Channels
Wt.in Kg./Mtr
ISMC 75 75x40x4.4 6.8
ISMC 100 100x50x4.7 9.2
ISMC 125 125x65x5
ISMC 150 12.7
150x75x5.4 16.5
(in mmxmmxmm) (in mmxmmxmm)
25x25x3 -1.1 50x50x3 -2.325x25x4 -1.4 50x50x4 -3
25x25x5 -1.8 50x50x5 -3.8
40x40x3 -1.8 50x50x6 -4.5
40x40x4 -2.4 75x75x5 -5.7
40x40x5 -3 75x75x6 -6.8
40x40x6 -3.5 75x75x8 -8.9
J for oule
KWH for kilowatt
hour
KFM kilogram force
metre KEAL kilocalorie
HPH
horsepower
hour
FT (foot
pound
force
BTU(british
thermal
unitJ 1 0.2778x10
60.101197 0.23885x10
40.37767x10
60.73756 0.94782x10
4
kWh 36x106
1 0.3671x106
859.85 1.3596 2.6552x106
3.4142x104
kfm 1 2.7241x106
1 2.3423x106
3.7037x106
7.233 9.2949x104
keal 9.8066 1.163x106
426.94 1 1.5312x103
3.0880x104
3.9683
hph 4.1868x103
0.7355 0.27x106
632.42 1 1.9529x106
2.5096x103
ft-ibf 1.3558 0.37662x106
0.13826 0.32383x103
0.51206x106
1 1.2851x104
Btu 1.055x103
0.29307x106
107.59 0.252 0.39847x103
778.17 1
W Newton kgfm/s keal/s keal/h
hp.metric
horsepower
hp.
horsepower ft x lbf/s Btu/h
W 1 1.10197 0.23885x10
3
0.85985 1.3596x10
3
1.3410x10
3
0.73756 3.4121kgfm/s 9.8066 1 2.34x10
48.4322 13.333x10
313.151x10
37.233 33.462
keal/s 4.1868 x 104
426.94 1 3.6x104 5.6925 5.6146 3.0880x104
14.286x103
keal/h 1.163 0.11859 0.27778x104
1 1.5812x104
1.5596x103
0.85779 3.9683
hp,metric 735.5 75 0.17567 632.42 1 0.98632 542.48 2.5096x104
hp, 745.7 76.04 0.17811 644.19 1.0139 1 550 2.5444x104
ft x lbf/s 13558 0.13826 0.32383x104
1.1658 1.8434x104
1.8182x104
1 4.6262
Btu h 0.29307 29.885x10 69.999x10 0.2522 0.39847x10 0.39302x10 0.21616 1
QUANTITIES AND UNITS CONVERSION TABLES
ENERGY
6).Equal Angle (Wt.in Kg./ Mtr.)
POWER
STEEL DATA FOR SHEETS,PLATES AND SECTIONS
Wt.in Kg. /
MtrWeight / Mtr.Size in mm
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Current Carryingcapacity
VoltDrop/Amp./Metre(m
V)
Current Carrying
Capacity(A)
VoltDrop/Amp./Metre(m
V)
1.5 20 29 18 25
2.5 29 18 24 16
4 37 12 31 9.5
6 48 7.4 41 6.3
10 66 4.3 56 3.8
16 86 2.7 73 2.3
25 115 1.8 97 1.6
35 142 1.3 119 1.1
50 168 0.92 147 0.81
70 209 0.65 180 0.57
90 257 0.48 219 0.42
120 295 0.4 257 0.34
150 337 0.32 295 0.29
185 390 0.29 333 0.24240 461 0.25 399 0.18
300 523 0.23 451 0.18
400 589 0.22 523 0.17
2.5 21 29 19 25.1
4 27 18.2 25 15.8
6 35 12.1 32 10.5
10 48 7.3 43 6.3
16 65 4.5 58 3.9
25 84 2.9 74 2.5
35 105 2.1 90 1.8
50 125 1.6 115 1.3
70 150 1.1 135 0.93
95 185 0.79 165 0.68
120 210 0.65 190 0.54
150 240 0.53 215 0.45
185 280 0.45 250 0.37
240 325 0.36 295 0.3
300 380 0.31 340 0.25
400 460 0.26 415 0.225
worked
out
examples:
Calculation of voltage frop in 25 Amps 240 volts single phase feeder having 150 mrs
length.Size cable is 35sq mm AYFY
Voltage drop / Amp / metre for
35sq mm AYFY cable = 2.1mV
Voltage drop in 150mr length
with current 25 Amps = 2.1x25x150 =7.88V
1000
% Viltage drop = 7.88x100 =3.28%
240
Take next higher size cable,50sq.mm
Voltage drop in 150 m length = 1.6x25x150 =6volts
1000
% Voltage drop
So 50sq mm cable is to be selected = 6x100 =2.5%
240
VOLTAGE DROP IN INSULATED ALUMINIUM CABLESConductor
Cross-
Sectional
Area
Installation method (Clipped direct)
One Twin Single phase Three Core Three Phase
VOLTAGE DROP IN INSULATED COPPER CABLES
Conductor
Cross-
Sectional
Area
(mm2
)
Installation method (Clipped direct)
Three Core Three PhaseOne Twin Single phase
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1 2 3 4 1 2 3 4
I II III II 50 II I II III IIII
12x2 23.5 0.209 110 200 _ _ 115 205 _ _ 15x2 29.5 0.262 140 200 _ _ 145 245 _ _
15x3 44.5 0.396 170 300 _ _ 175 305 _ _
20x2 39.5 0.351 185 315 _ _ 190 325 _ _
20x3 59.5 0.529 220 380 _ _ 225 390 _ _
20x5 99.1 0.882 295 500 _ _ 300 510 _ _
25x3 74.5 0.663 270 460 _ _ 275 470 _ _
25x5 124 1.11 350 600 _ _ 355 610 _ _
30x3 89.5 0.796 315 540 _ _ 320 560 _ _
30x5 149 1.33 400 700 _ _ 410 720 _ _
40x3 119 1.06 420 710 _ _ 430 740 _ _
40x5 199 1.77 520 900 _ _ 530 930 _ _
40x10 399 3.55 700 1350 1850 2500 770 1400 2000 _
50x5 249 2.22 630 1100 1650 2100 850 1150 1750 _
50x10 499 4.44 920 1600 2250 3000 960 1700 2500 _
60x5 299 2.66 760 1250 1760 2400 780 1300 1900 2500
60x10 599 5.33 1060 1900 2600 3500 1100 2000 2800 3800
80x5 399 3.55 970 1700 2300 3000 1000 1800 2500 3200
80x10 799 7.11 1380 2300 3100 4200 1400 2600 3700 4800
100x5 499 4.44 1200 2050 2850 3500 1250 2250 3150 4050
100x10 999 8.89 1700 2800 3650 5000 1800 3200 4500 5800
120x10 1200 10.7 2000 3100 4100 5700 2100 3700 5200 6700
160x10 1600 14.2 2500 3900 5300 7300 2800 4800 6900 9000
220x10 2000 17.8 3000 4750 6350 8800 3400 6000 8500 10000
1 2 3 4 1 2 3 4
I II III II 50 II I II III IIII
12x2 23.5 0.0633 80 140 _ _ 80 145 _ _
15x2 29.5 0.0795 95 170 _ _ 95 175 _ _
15x3 44.5 0.12 115 210 _ _ 115 220 _ _
20x2 39.5 0.107 120 220 _ _ 125 225 _ _
20x3 59.5 0.161 145 270 _ _ 150 280 _ _
20x5 99.1 0.268 195 350 _ _ 200 370 _ _
25x3 74.5 0.201 180 330 _ _ 185 340 _ _
25x5 124 0.335 230 430 _ _ 235 440 _ _
30x3 89.5 0.242 205 385 _ _ 220 400 _ _
30x5 149 0.403 270 500 _ _ 275 520 _ _
40x3 119 0.323 280 500 _ _ 285 525 _ _
40x5 199 0.588 350 650 _ _ 360 660 _ _
40x10 399 1.08 515 975 1350 1800 540 1000 1420 _
50x5 249 0.673 425 780 1120 1500 445 815 1220 _
50x10 499 1.35 625 1150 1600 2160 655 1220 1730 _
60x5 299 0.808 500 900 1300 1730 530 960 1420 1850
60x10 599 1.62 730 1330 1900 2500 770 1430 2030 2600
80x5 399 1.08 680 1170 1650 2230 700 1260 1850 2400
80x10 799 2.16 940 1700 2360 3150 985 1840 2640 3400
100x5 499 1.35 820 440 2000 2600 855 1550 2220 2900
100x10 999 2.7 1150 2050 2800 3700 1200 2240 3200 4200
100x15 1500 4.04 1450 2500 3350 4400 1500 2750 4000 5200
120x10 1200 3.24 1350 2400 3250 4300 1420 2700 3900 5100
120x15 1800 4.86 1650 2900 3900 5000 1750 3250 4800 6300
160x10 1600 4.32 1750 3000 4150 5300 1850 3450 5000 6500160x15 2400 6.47 2100 3600 4850 6250 2300 4300 6200 8100
200x10 2000 5.4 2150 3650 4950 6400 2300 4300 6200 8100
200x15 3000 8.09 2550 4200 5600 7300 2850 5250 7650 10100
Copper Bus Bars : Constructional Details and Current Carrying Capacity at 350
C AmbientTemp.and 300C Temp.Rise
Size in mmCross Sectional Area
in MM2
Weight (Approx) kg
/ Metre
Continuous Current Carrying Capacity in Amps
A.C. No.of Buseness A.C.No.of Buses
Copper Bus Bars : Constructional Details and Current Carrying Capacity at 350
C AmbientTemp.and 300C Temp.Rise
Size in mmCross Sectional Area
in MM2
Weight (Approx) kg
/ MetreA.C. No.of Buseness A.C.No.of Buses
Continuous Current Carrying Capacity in Amps
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Rated
Capacity
No of
Load
Loss
Impedence Rated HV Rated LVLowVoltage
Conn.Bolts
Weight
kVA kW %Z kV kV al a b c d e f g h i k Strap kg25 0.2 4 11 0.433 810 720 940 500 920 880 230 375 350 150 M10 290
50 0.3 4 11 0.433 810 720 940 500 970 930 230 375 350 150 M10 450
63 0.3 4 11 0.433 810 720 1040 500 1070 900 210 379 190 190 M10 400
100 0.38 4 11 0.433 900 840 1200 500 1180 1140 230 375 360 160 M10 600
125 0.4 4 11 0.433 900 840 1300 500 1280 1240 230 375 350 150 M10 700
160 0.6 4 11 0.433 900 840 1400 500 1380 1340 230 375 350 150 M16 820
200 0.75 4 11 0.433 1215 1040 1300 700 1270 1100 230 405 350 150 40X8 1070
250 0.85 4 11 0.433 1215 1040 1400 700 1370 1200 230 405 350 200 40X8 1250
315 0.9 4 11 0.433 1215 1040 1510 700 1500 1450 230 405 350 200 40X8 1450
400 0.93 5 11 0.433 1215 1040 1760 700 1750 1700 230 405 350 200 40X8 1750
500 1.3 5 11 0.433 1400 1185 1400 820 1420 1340 380 445 350 200 60X8 1900
630 1.45 5 11 0.433 450 1400 1185 1600 820 1620 1540 380 445 350 200 60X8 2250800 1.85 5 11 0.433 450 1620 1185 1710 820 1790 1650 390 455 350 250 100X8 2700
1000 2.1 5 11 0.433 475 1620 1185 1800 820 1880 1740 390 455 350 250 100X8 3200
1250 2.3 5 11 0.433 475 1620 1185 2210 820 2290 2150 390 455 350 350 100X8 3800
1600 3.2 7 11 0.433 475 1920 1500 2370 1070 2470 2310 415 470 350 350 120X15 4800
2000 3.6 8 11 0.433 475 2100 1500 2320 1070 2420 2260 420 480 350 350 120X15 5500
2500 4.4 8 11 0.433 650 2300 1500 2470 1070 2610 2410 440 500 350 350 150X15 6500
0.72
1.1
1.35
1.7
2
2.2
2.6
2.8
3.63.7
5.7
6
8.8
9.8
11
16.5
2124.5
Rated freequency : 50HzRated high voltages : 3300,6600,11000, and others upto 12000 volts : Standards taps 2 1/2%,+5%
Rated low voltage : 110 /220 /380 / 400 / 415 / 525 / 600.
Dimensions in (mm)
TYPICAL DETAILS OF DRY TYPE TRANSFORMERS
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Recommended size of cables on secondary side of Transformers and for M.V. Alternators
I Transformers Capacity in KVA PVC Aluminium cable size
3 Phase at 433 volts (Armoured)
100 One Run of 31/2 core 95sq.mm.
150 One Run of 31/2 core 185sq.mm.
160 One Run of 31/2 core 240sq.mm.
200 One Run of 31/2 core 300sq.mm.
250 One Run of 31/2 core 400sq.mm.(or)
Two Run of 31/2 core 185sq.mm.
315 Two Run of 31/2 core 240sq.mm.
400 Three Run of 31/2 core 300sq.mm.
500 Three Run of 31/2 core 400sq.mm.
Four Run of 31/2 core 300sq.mm.
630 Four Run of 31/2 core 400sq.mm.750&above Bus Bar trunking
II M.V.Alternators PVC Aluminium cable size
KVA.3 phase (Armoured)
110 One Run of 31/2 core 95sq.mm.
160 One Run of 3/12 core 240sq.mm.
200 One Run of 3/12 core 300sq.mm.
250 One Run of 3/12 core 400sq.mm.
Two Rins of 3/12 core 185sq.mm.
310 Two Rins of 3/12 core 240sq.mm.
550 Four Runs of 3/12 core 400sq.mm.
860 Bus bar trunking.
CAPCITORS IN kVAR FOR REQUIRED P.F.CORRECTIONInitial
Power
Initial
Power
factor 0.85 0.9 0.95 0.98 1 factor 0.85 0.9 0.95 0.98 1
0.5 1.112 1.248 1.403 1.529 1.732 0.75 0.262 0.398 0.535 673 0.882
0.51 1.066 1.202 1.357 0.483 1.686 0.76 0.235 0.371 0.526 0.652 0.855
0.52 1.024 1.16 1.315 1.441 1.644 0.77 0.209 0.345 0.5 0.62 0.829
0.53 1.98 1.116 1.271 1.397 1.6 0.78 0.183 0.319 0.473 0.594 0.833
0.54 0.939 1.075 1.23 1.356 1.559 0.79 0.156 0.292 0.447 0.567 0.776
0.55 0.899 1.035 1.19 1.316 1.519 0.8 0.13 0.266 0.421 0.541 0.75
0.56 0.86 0.996 1.151 1.277 1.459 0.81 0.104 0.25 0.395 0.515 0.725
0.57 0.822 0.958 1.113 1.239 1.442 0.82 0.078 0.214 0.369 0.489 0.6980.58 0.785 0.921 1.076 1.202 1.405 0.83 0.052 0.188 0.343 0.463 0.672
0.59 0.748 0.884 1.039 1.165 1.368 0.84 0.026 0.162 0.317 0.437 0.645
0.6 0.714 0.849 1.005 1.131 1.334 0.85 _ 0.136 0.291 0.417 0.62
0.61 0.679 0.815 0.97 1.096 1.299 0.86 _ 0.109 0.264 0.39 0.593
0.62 0.645 0.781 0.936 1.062 1.265 0.87 _ 0.083 0.238 0.364 0.567
0.63 0.613 0.749 0.904 1.03 1.233 0.88 _ 0.054 0.209 0.335 0.538
0.64 0.58 0.716 0.871 0.997 1.2 0.89 _ 0.028 0.183 0.309 0.512
0.65 0.549 0.685 0.84 0.966 1.169 0.9 _ _ 0.155 0.251 0.484
0.66 0.518 0.654 0.809 0.935 1.138 0.91 _ _ 0.124 0.25 0.453
0.67 0.488 0.624 0.779 0.905 1.108 0.92 _ _ 0.097 0.233 0.426
0.68 0.459 0.595 0.75 0.876 1.076 0.93 _ _ 0.066 0.192 0.395
0.69 0.429 0.565 0.72 0.84 1.049 0.94 _ _ 0.034 0.16 0.363
0.7 0.4 0.536 0.691 0.811 1.02 0.95 _ _ _ 0.126 0.239
0.71 0.372 0.508 0.663 0.753 0.992 0.96 _ _ _ 0.089 0.292
0.72 0.343 0.479 0.634 0.754 0.963 0.97 _ _ _ 0.047 0.25
0.73 0.316 0.452 0.607 0.727 0.863 0.98 _ _ _ _ 0.203
0.74 0.289 0.425 0.508 0.7 0.909 0.99 _ _ _ _ 0.143
Example: To find the capacitor rating required to correct a load of at 0.97kW at 0.67 P.F.to 0.95 P.F.
Required kVAR per KW (vide table above) =0.779
Total Capacitor rating=0.779x97=75.65 or 76 kVAR.
Correction to Correction to
ANNEXURE R
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