View
241
Download
0
Category
Preview:
Citation preview
8/12/2019 Table for Electrical Machine Design
1/29
Ordinary covering (nun)
0.250 0.5000.280 0.530
0.315 0.565
0.355 . 0.6050.400 0.650
0.450 0.700
0.500 0.750
0.560 0.810
0.630 0.880
0.710 0.985
0.750 1.025
0.800 1.075
0.850 1.125
0.900 1.175
0.950 1.2251.000 1.275
1.060 1.335
1.120 1.395
1.180 1.455
1.250 1.525
1.320 1.595
1.400 1.700
1.500 1.800
1.600 1.900
1.700 2.000
1.800 2.1001.900 /2002.000 2.350
2.120 2.470
2.240 2.590
2.360 2.710
2.500 2.850
2.650 3.000
2.800 3.150
3.000 3.350
3.150 3.500
3.350 3.9003.550 3.980
3.750 4.100
4.000 4.350
4.250 4.600
4.500 4.850
4.750 5.100
5.000 5.350
Table 10.1: IS: 3454-1966 giving Diameter of Paper Covered Roun
Conductor diameter (nominal mat)
Overall diame
8/12/2019 Table for Electrical Machine Design
2/29
Fine covering (nun)
0.4250.455
0.530
0.5300.575
0.625
0.675
0.735
0.805
0.885
0.925
0.975
1.025
1.075
1.1251.200
1.260
1.320
1.380
1.450
1.520
1.575
1.675
1.775
1.875
1.9752.0752.250
2.370
2.490
2.610
2.725
2.875
3.025
3.225
3.375
3.5753.775
3.975
4.300
4.550
4.800
5.050
5.300
Copper conductors
ter Inavanum
8/12/2019 Table for Electrical Machine Design
3/29
Conductor
diameter
(nominal) Ordinary Fine Ordinary Fine(mm) (mm) (mm) (mm) (mm)
0.224 0.354 0.326 0.481 0.4040.250 0.380 0.352 0.507 0.430
0.280 0.410 0.382 0.537 0.461
0.315 0.445 0.417 0.572 0.496
0.355 0.486 0.458 0.613 0.531
0.400 0.531 0.503 0.658 0.582
0.450 0.582 0.554 0.709 0.6320.500 0.632 0.604 0.759 0.683
0.560 0.696 0.665 0.820 0.744
0.630 0.763 0.736 0.891 0.814
0.710 0.869 0.842 0.997 0.8950.750 0.910 0.882 1.037 0.935
0.800 0.960 0.933 1.087 0.986
0.850 1.011 0.983 1.138 1.036
0.900 1.061 1.034 1.188 1.087
0.950 1.112 1.084 1.239 1.137
1.000 1.162 1.135 1.290 1.215
1.060 1.225 1.195 1.350 1.275
1.120 1.285 1.255 1.410 1.335
1.180 1.345 1.315 1.470 1.375
1.250 1.415 1.385 1.540 1.4651.320 1.485 1.460 1.615 1.535
1.400 1.590 1.565 1.720 1.645
1.500 1.695 1.665 1.820 1.745
1.600 1.795 1.765 1.920 1.845
1.700 1.895 1.865 2.020 1.945
1.800 1.995 1.970 2.125 2.045
1.900 2.095 2.070 2.775 2.150
2.000 2.225 2.195 2.375 2.275
2.120 2.345 2.315 2.495 2.395
2.240 2.465 2.440 2.620 2.5152.360 2.585 2.560 2.740 2.635
2.500 2.730 2.700 2.880 2.780
2.650 2.880 2.850 3.035 2.930
2.680 3.030 3.005 3.185 3.080
3.000 3.235 3.205 3.385 3.285
3.150 3.385 3.355 3.540 3.435
3.350 3.585 3.560 3.740 3.635
Table 10.2: IS:450-1964 Cotton Covered Round Copper Conductors
Overall diameter maximum
Single cotton Double cotton
8/12/2019 Table for Electrical Machine Design
4/29
8/12/2019 Table for Electrical Machine Design
5/29
Nominal conductor Normal covering Thick Covering (mm) (mm) (mm)
0.025 0.035 -0.030 0.040 -
0.036 0.045 -
0.040 0.050 -
0.045 0.058 -
0.050 0.063 0.068
0.060 0.073 0.080
0.071 0.086 0.094
0.080 0.095 0.105
0.090 0.108 0.115
0.100 0.118 0.1280.112 0.132 0.142
0.125 0.145 0.155
0.132 0.152 0.162
0.140 0.163 0.173
0.150 0.173 0.186
0.160 0.183 0.196
0.170 0.195 0.218
0.180 0.205 0.228
0.195 0.220 0.236
0.200 0.225 0.2410.312 0.240 0.255
0.224 0.254 0.270
0.236 0.266 0.382
0.250 0.283 0.298
0.258 0.291 0.306
0.265 0.298 0.316
0.280 0.316 0.331
0.300 0.336 0.354
0.307 0.343 0.301
0.315 0.354 0.3720.335 0.374 0.394
0.355 0.397 0.417
0.375 0.417 0.437
0.400 0.445 0.465
0.425 0.473 0.495
0.462 0.513 0.535
0.475 0.526 0.548
Table 10.3: IS: 449-1962 Diameleit of Enamelled Round Copper Wire.
(Oleo Resinous Enamel)
Overall diameter - maximum
8/12/2019 Table for Electrical Machine Design
6/29
0.500 0.553 0.576
0.530 0.584 0.609
0.560 0.614 0.642
0.600 0.657 0.681
0.630 0.687 0.713
0.670 0.728 0.756
0.710 0.768 -0.730 0.791 -
0.750 0.811 -
0.800 0.861 -
0.850 0.914 -
0.925 0.980 -
0.950 1.015 -
1.000 1.065 -
1.060 1.130 -
1.120 1.195 -
1.180 1.255 -1.250 1.325 -
1.320 1.395 -
1.400 1.440 -
1.500 1.580 -
1.600 1.685 -
1.700 1.785 -
1.800 1.890 -
1.900 1.995 -
2.060 2.160 -
2.120 2.220 -2.240 2.345 -
2.360 2.465 -
2.500 2.610 -
2.650 2.765 -
2.800 2.920 -
2.900 3.020 -
3.000 3.125 -
3.150 3.280 -
3.250 3.385 -
3.350 3.485 -3.450 3.590 -
3.550 3.695 -
3.650 3.795 -
8/12/2019 Table for Electrical Machine Design
7/29
Fine coveringMedium
coveringThick covering
Extra thick
covering
mm mm mm mm mm
0.050 0.060 0.065 - -0.060 0.073 0.078 - -
0.071 0.081 0.092 - -
0.080 0.095 0.105 0.118 -
0.090 0.105 0.115 0.128 -
0.100 0.118 0.128 0.141 -
0.112 0.132 0.143 0.156 -
0.125 0.146 0.159 0.172 -
0.132 0.155 0.168 0.181 -
0.140 0.163 0.176 0.191 -
0.150 0.173 0.186 0.201 -0.160 0.185 0.198 0.213 -
0.170 0.198 0.211 0.226 -
0.180 0.208 0.223 0.238 -
0.195 0.224 0.239 0.257 -
0.200 0.230 0.246 0.264 -
0.212 0.242 0.258 0.276 -
0.224 0.254 0.272 0.290 -
0.236 0.266 0.284 0.302 -
0.250 0.283 0.301 0.319 0.344
0.258 0.291 0.309 0.327 0.352
0.265 0.299 0.317 0.335 0.362
0.280 0.316 0.334 0.351 0.379
0.300 0.336 0.354 0.372 0.400
0.307 0.345 0.362 0.380 0.408
0.315 0.354 0.372 0.389 0.417
0.335 0.375 0.393 0.410 0.441
0.355 0.397 0.415 0.432 0.465
0.375 0.418 0.438 0.455 0.489
0.400 0.445 0.465 0.488 0.518
0.425 0.472 0.493 0.513 0.549
0.462 0.511 0.531 0.551 0.588
0.475 0.526 0.546 0.566 0.603
0.500 0.551 0.571 0.591 0.630
0.530 0.581 0.602 0.623 0.662
0.560 0.612 0.635 0.655 0.696
0.600 0.654 0.677 0.697 0.738
Nominal
conductor
diameter
Table 10.4: IS: 1595-1960 Roand Copper Wire (Synthetic Enamel)
Overall diameter
Page 7 of 29
8/12/2019 Table for Electrical Machine Design
8/29
Fine coveringMedium
coveringThick covering
Extra thick
covering
mm mm mm mm mm
Nominal
conductor
diameter
Table 10.4: IS: 1595-1960 Roand Copper Wire (Synthetic Enamel)
Overall diameter
0.630 0.684 0.707 0.728 0.7680.670 0.727 0.750 0.771 0.812
0.710 0.768 0.791 0.814 0.852
0.730 0.788 0.811 0.834 0.874
0.750 0.808 0.831 0.854 0.895
0.800 0.861 0.884 0.907 0.950
0.850 0.912 0.935 0.958 1.001
0.925 0.990 1.016 1.039 1.035
0.950 1.015 1.041 1.064 1.110
1.000 1.070 1.095 1.120 1.165
1.060 1.130 1.155 1.180 1.225
1.120 1.190 1.215 1.240 1.287
1.180 1.253 1.278 1.303 1.353
1.250 1.325 1.350 1.375 1.425
1.320 1.395 1.420 1.447 1.500
1.400 1.480 1.505 1.535 1.585
1.500 1.580 1.605 1.635 1.685
1.600 1.680 1.710 1.749 1.790
1.700 1.785 1.810 1.840 1.890
1.800 1.885 1.915 1.940 1.995
1.900 1.990 2.015 2.045 2.095
2.060 2.150 2.180 2.210 2.265
2.120 2.211 2.242 2.271 2.327
2.240 2.335 2.365 2.397 2.455
2.360 2.485 2.488 2.520 2.575
2.500 2.600 2.630 2.665 /.720
2.650 2.752 2.785 2.815 2.872
2.800 2.905 2.935 2.970 3.025
2.900 3.010 3.040 3.070 3.125
3.000 3.110 3.140 3.175 3.230
3.150 3.262 3.295 3.325 3.382
3.250 3.365 3.395 3.427 3.485
3.350 3.465 3.497 3.520 3.585
3.450 3.567 3.600 3.630 3.690
3.550 3.670 3.700 3.732 3.795
3.650 3.770 3.800 3.835 3.895
3.750 3.872 3.902 3.937 3.997
Page 8 of 29
8/12/2019 Table for Electrical Machine Design
9/29
Fine coveringMedium
coveringThick covering
Extra thick
covering
mm mm mm mm mm
Nominal
conductor
diameter
Table 10.4: IS: 1595-1960 Roand Copper Wire (Synthetic Enamel)
Overall diameter
4.000 4.125 4.155 4.190 4.255
Page 9 of 29
8/12/2019 Table for Electrical Machine Design
10/29
Voltampere (VA) Tunis per volt (Te) Voltampere (VA)
10 23.3 200
15 17.5 250
20 14.0 300
25 11.7 400
50 7.0 500
75 5.6 750
100 4.6 1000
150 4.0
Table 10.5: Number of Turns per Volt-TeCorresponding to Volt
8/12/2019 Table for Electrical Machine Design
11/29
Tunis per volt (Te)
3.5
2.8
2.5
2.3
2.0
1.7
1.6
mpere Rating-VA.
8/12/2019 Table for Electrical Machine Design
12/29
Sankey Type Remarks
No. A B C D E
(mm) (mm) (mm) (mm) (mm) (mm)
17 12.70 38.00 31.80 6.35 6.35 12A 16.90 47.80 39.70 7.95 7.95
21 16.90 50.80 54.00 7.95 7.95
10 16.90 60.30 54.00 9.52 9.52
10A 16.90 60.30 54.00 9.52 9.52
1 24.60 64.30 57.20 7.95 7.95
74 17.50 52.40 43.70 8.74 8.74
23 19.10 57.20 47.70 9.52 9.52
11 19.10 76.20 57.20 9.52 9.52
11A 19.10 76.20 66.60 9.52 9.52
2 19.10 76.20 76.20 9.52 9.52
30 20.00 60.00 50.00 10.00 10.00 4 holes 4 mm dia
31 22.20 66.60 55.60 11.10 11.10 4 holes 4 mm dia
45 22.20 66.60 55.60 11.10 11.10 4 holes 4 mm dia
15 25.40 76.20 63.50 12.70 12.70 4 holes 5.55 mm dia
44 25.40 76.20 63.50 12.70 12.70 4 holes 5.55 mm dia14 25.40 84.00 66.60 13.50 13.50 4 holes 5.55 mm dia
4 25.40 97.00 97.00 13.50 13.50 4 holes 5.55 mm dia
33 28.00 84.00 70.00 14.00 14.00 4 holes 4.4 mm dia
3 31.80 95.30 79.50 15.90 15.90 4 holes 5.55 mm dia
13 31.80 101.60 89.00 12.70 12.70 4 holes 5.55 mm dia
4A 33.80 105.00 97.40 16.70 16.70 4 holes 4.75 mm dia
16 38.10 114.30 95.30 19.05 19.05 4 holes 5.55 mm dia
5 38.10 120.70 95.30 19.05 19.05 4 holes 6.75 mm dia
6 38.10 127.00 114.30 19.05 19.05 4 holes 7.15 mm dia
7 50.80 152.50 125.50 25.40 25.40 4 holes 6.75 mm dia
43 50.80 152.50 127.00 25.40 25.40 4 holes 6.75 mm dia
8 50.80 184.00 171.50 25.40 25.40 4 holes 9.55 mm dia
Dimensions
Table 10.6: Dimensions of E-I Stampings:
8/12/2019 Table for Electrical Machine Design
13/29
Current Ratings Number & Dia of Wire Nominal area
Amp mm sq mm
5 Amp 1 / 1.12 0.96
10 Amp 3 / 0.736 1.29
15 Amp 3 / 0.915 1.9320 Amp 7 / 0.736 2.9
28 Amp 7 / 0.915 4.52
36 Amp 7 / 1.12 6.45
48 Amp 7 / 1.32 9.35
53 Amp 7 / 1.626 14.5
62 Amp 19 / 1.12 19.35
74 Amp 19 / 1.32 25.8
97 Amp 21 / 1.626 38.7
COPPER CONDUCTOR CURRENT RATINGS
This table gives the current rating for single core, twine
core cable with V.I.R., P.V.C., T.R.S.. The ratings are based
on an temperature of 30 degree centrigrade
Minimum size of PVC cable that can be used for motor
winding is 3/0.736 mm
8/12/2019 Table for Electrical Machine Design
14/29
Current Ratings Number & Dia of Wire Nominal area
Amp mm sq mm
10 Amp 1 / 1.40 1.5
15 Amp 1 / 1.80 2.5
20 Amp 1 / 2.24 427 Amp 1 / 2.80 6
34 Amp 1 / 3.55 10
43 Amp 7 / 1.70 16
59 Amp 7 / 2.24 25
60 Amp 7 / 2.50 35
ALLUMINIUM CONDUCTOR CURRENT RATINGS
This table gives the current rating for single core, twine core cable
with V.I.R., P.V.C., T.R.S.. The ratings are based on an temperature
of 30 degree centrigrade
Minimum size of PVC cable that can be used for motor winding is
1/1.80 mm
8/12/2019 Table for Electrical Machine Design
15/29
sq mm mm S B S B S B S B S
1.00 1/1.12 COPPER 7 5 13 10 20 14
1.25 3/0.736 COPPER 7 5 12 10 20 14
1.50 1/1.40 ALUMINIUM 7 5 12 10 20 14
2.00 3/0.925 COPPER 5 4 10 8 18 12
2.50 1/1.80 ALUMINIUM 6 5 10 8 18 12
3.00 7/0.736 COPPER 5 4 8 6 12 10
4.00 1/2.24 ALUMINIUM 4 3 7 6 12 10
4.50 7/0.925 COPPER 3 2 6 5 10 8
6.00 1/2.80 ALUMINIUM 3 6 5 10 8
6.75 7/1.12 COPPER 2 5 4 8 710.00 1/3.55 ALUMINIUM 2 5 4 8 7
12.00 7/1.32 COPPER 2 4 3 6 5 8 6
14.00 7/1.626 COPPER 3 2 4 4 7 6
16.00 7/1.70 ALUMINIUM 2 4 3 7 6
18.00 19/1.12 COPPER 4 3 6 5 10
25.00 7/2.24 ALUMINIUM 3 2 5 4 8
30.00 19/1.32 COPPER 3 2 5 4 8
35.00 7/2.50 ALUMINIUM 2 4 3 7
40.00 19/1.626 COPPER 3 3 6
50.00 7/3.00 ALUMINIUM 4 3 650.00 19/1.80 COPPER 2 5
Note: The table shows the maximum capacity of conduit for the simultaneous drawing-in of cables.
1,100 V grade cables. The columns headed `S' apply to runs of conduit which have distance not exce
between draw-in-boxes, and which do not deflect from straight by an angle of more than 15. The c
apply to runs of conduit with deflect from the straight by an angle of more than 15
Maximum capacity of conduits for drawing-in of 1,100 V grade cable
Nominal X-
sectional
area
No & diameter
of wire
Material of
conductor
NUMBER OF CABLE THAT CAN BE ACCOMMODATED IN CO
19 MM 25 MM 31 MM 38 MM 50
8/12/2019 Table for Electrical Machine Design
16/29
B S B
7 12 8
6 9 7
6 9 7
5 8 6
5 8 6
4 6 54 6 5
63 MM
he Table applies to
eding 4.25 metres
olumns headed B
.
NDUIT OF SIZE
M
8/12/2019 Table for Electrical Machine Design
17/29
Rs.
1 32 A 500V grade triple pole iron clad switch fuse unit
2 16 A 500V grade triple pole iron clad switch fuse unit
3 16 A, 250V grade double pole iron clad main switch4 4 way 500 V 15 A per way iron clad distribution box
5 Heavy gauge conduit
i) 25.4 mm
ii) 19 mm
6 Flexible conduit
i) 25.4 mm
ii) 19 mm
7 Single core 7/2.24 mm aluminium conductor cable
7 Single core 1/2.80 mm aluminium conductor cable
8 Single core 1/1.80 mm aluminium conductor cable
9 Angle iron frames
i) 46 cm x 60 cm
ii) 30 cm x 50 cm
10 Conduit bends
i) 25.4 mm
ii) 19 mm
11 Conduit saddles
i) 25.4 mm
ii) 19 mm
12 Conduit couplers
i) 25.4 mmii) 19 mm
13 Locknuts
i) 25.4 mm
ii) 19 mm
14 Flexible pipe coupling with locknuts
i) 25.4 mm
ii) 19 mm
15 Wooden Bushings
i) 25.4 mm
ii) 19 mm
16 Teakwood gutties17 Iron screws
18 No 8 SWG GI wire for earthings ( 10 m = 1 Kg )
19 Clips for fixing the earth wire
20 Lugs for connection of the earth wire with motor
21 Earthing set
i) GI pipe (Perforated) 38.1 mm dia
ii) GI pipe 19 mm dia
iii) GI pipe 12.7 mm dia
iv) CI cover 30 cm x 30 cm
Schedule / List of Materials and Costing
RaQty.UnitSpecification of materialsSr. No
8/12/2019 Table for Electrical Machine Design
18/29
v) GI bends 12.7 mm dia
vi) Funnel with wire mesh cover
vii) GI bolt, nut, and locknut with washers (19 mm)
viii) GI lug
ix) Charcoal
x) Salt
xi) Civil works
22 Caution plate and its painting23 Shock treatment chart
24 Labour cost
Total
Contingencies charges 10 %
Grand total
8/12/2019 Table for Electrical Machine Design
19/29
No of Phase H.P
M1 3 10.00
Pc. Rs. Pc. M2 3 5.00
1 M3 3 3.00
3 M4 1 1.00
11
1
75
1
6
1.5
1.5
265
1
4
4
35
5
30
220
4
48
2
16
2
24
800300
18
200
10
1
2.75 m
2.45 m
2 m
1 no
Totalte
8/12/2019 Table for Electrical Machine Design
20/29
3 no
1 no
1 no each
1 no
10 kg
10 kg
21
8/12/2019 Table for Electrical Machine Design
21/29
Line Voltage Efficiency Power factor HP = watt Line Current Current carrying capacity
VL P.F IL Is = 1.5 x IL
400 80% 0.8 735.5 16.59 24.88
400 80% 0.8 735.5 8.29 12.44
400 80% 0.8 735.5 4.98 7.46
230 80% 0.8 735.5 5.00 7.49
34.85 52.28
8/12/2019 Table for Electrical Machine Design
22/29
8/12/2019 Table for Electrical Machine Design
23/29
Al size of Cable Cu size of Cable
1/2.80 mm (27A)
1/1.80 mm (15A)
8/12/2019 Table for Electrical Machine Design
24/29
Sr. No Specification of material Unit
1 15 A 250V grade IC double Pole Main Switch No
2 8 way 250V, 15 A, per way IC distribution fuse boards No
3. IC cutour 15 A. No.
4. Heavy gauge conduit 19 mm M
5. Single core 1/2.24 mm aluminium conductor cable M
6. Single core 1/l.40 mm aluminium condutor cable M
7. Inspectionboxes (2 way) round 7.6 cm dia with cover for 19 mm conduit No.
8. Junction boxcs 7.6 cm x 7.6 cm with cover No.
9 Outlet boxes 7.6 cm dia for 19 mm conduit No.
10. Conduitbends 19 mm No.
11. Conduit saddles 19 mm No.
12. Conduit couplings 19 mm No.
13. Locknuts 19 mm No.
14. Wooden bushings 19 mm No.
15 Cl boxes with bakelite cover (1) 30 cm x 38 cm No.
16. Ceiling roses 2plate 5 A. No.
17. 5 A t\lmblcr switch-flush type No.
18. Angle iron frame for main board, 30 cm x 50 cm. No.
19. No. 14 SWG copper wire (40 m = 1kg.) kg.
20. Soft screws
(i) 1.90 cm x 8 SWG No.
(ii) 5.08 Cm X 4 SWG No.
21. Labour cost
Total
Contingencies charges 10%
G. Total
8/12/2019 Table for Electrical Machine Design
25/29
8/12/2019 Table for Electrical Machine Design
26/29
Sr. No Specification of material Unit
1 30 A. 250 V grade IC double pole main swit
8/12/2019 Table for Electrical Machine Design
27/29
Qty. reqd Rate Per Total Cost Remarks
1 75.00 each 75.00
1 170.00 each 170.00
1 15.00 cadt 15.00
130 9.00 m 1,170.00
1.0 3.00 100 m 3.00
400 80.00 100 m 320.00
7 1.75 each 26.25
4 3.75 each 15.00
28 3.75 each 105.00
15 2.50 each 37.50
400 0.45 each 180.00
133 0.85 each 115.05
100 2.00 each 200.00
50 6.00 100 nos. 300.00
7 34.00 each 238.00
28 5.00 each 140.00
28 5.50 each 154.40
l 50.00 each 50.00
7 110.00 kg. 770.00
600 30.00 100 nos. 180.00
300 52.00 100 nos. 156.00
855.00
5,275.20
527.50
5,802.70
8/12/2019 Table for Electrical Machine Design
28/29
Copper G I
Upto 10 hp No 8 No 8
Above 10 hp & upto 15 hp No 8 No 6
Above 15 hp & upto 30 hp No 6 No 2
Above 30 hp & upto 50 hp No 4
Above 50 hp & upto 100 hp No 2 or strip 13 mm x 2.5 mm
Above 100 hp Strip 25 mm x 2.5 mm
Capacity of Apparatus Size of Earth Wire in SWG
RECOMMENDED SIZE OF EARTH WIRE FO
8/12/2019 Table for Electrical Machine Design
29/29
Copper G I
60 . cm X 60 cm x 3 mm 60 x 60 cm x 6mm
do-- --do
do 90 cm x 90 cm x 6mm
90 cm x 90 cm x 6mm
do
do
Size of Earth Electrode
MOTOR INSTALLATION
Recommended