LT Cable Sizing Calculation sheet

7/28/2019 LT Cable Sizing Calculation sheet

http://slidepdf.com/reader/full/lt-cable-sizing-calculation-sheet 1/12

-

-

-

-

-

-

-

Revised as per commentsNew Calculations

Client

Project

Department

Plan:SK LT CABLE S

Num: 3BYN4611

Checked by ROLLER PRESS-1

HSY

CEMENT MILLWritten by

Approved by

SRRCITY CEMENT

0 04.07.2011

Rev. DATE MO

B

A 19.08.2011

D -

C -

F -

E -

H -

G -

LT CABLE SIZING CALCULATION

J -



S.No KW Efficiency P.F FLC

1 0.25 0.632 0.78 0.46 S.No Size Current in air AC Resistance at 90deg

2 0.37 0.653 0.78 0.68 1 3C x 2.5 24 9.48

3 0.55 0.724 0.81 0.98 2 3C x 4 36 5.9

4 0.75 0.735 0.8 1.35 3 3C x 6 47 3.94

5 1.1 0.761 0.8 1.98 4 3C x 10 39 3.7

6 1.5 0.782 0.81 2.67 5 3C x 16 50 2.29

7 2.2 0.803 0.86 3.69 6 3C x 25 63 1.44

8 3 0.824 0.86 5.04 7 3C x 35 77 1.04

9 4 0.835 0.86 6.71 8 3C x 50 95 0.77

10 5.5 0.851 0.85 9.34 9 3C x 70 115 0.53

11 7.5 0.867 0.87 12.44 10 3C x 95 140 0.38

12 11 0.899 0.83 19.13 11 3C x 120 155 0.3

13 15 0.906 0.84 25.78 12 3C x 150 175 0.25

14 18.5 0.917 0.85 31.42 13 3C x 185 200 0.2

15 22 0.921 0.85 37.36 14 3C x 240 235 0.15

16 30 0.926 0.83 52.17 15 3C x 300 280 0.12

17 37 0.934 0.84 63.58 16 3C x 400 290 0.09

18 45 0.94 0.85 76.42 Reference:

19 55 0.943 0.86 92.31 Grid india power cable

20 75 0.95 0.87 124.43

21 90 0.952 0.88 147.62

22 110 0.955 0.88 180.43

23 132 0.957 0.88 216.51

24 160 0.959 0.87 265.46

25 200 0.961 0.87 331.82

26 250 0.964 0.87 414.78 Derating Factors:

Variation in ambient temp. (50degC) 0.8

Reference: ABB Motor Catalogue Cable laid in air touching each other 0.75

Net derating factor 0.600

Motor Data Sheet COPPER XLPE, UNARMOURED POWER CABLES

4 and 3 Core Cu. Cable Data Sheet in Air

Page 3 of 12



JK cement Al

50 deg .C

SL.NO Motor KW Starting P.FCOS fStartingSIN f

StartingCurrent StartingZ

Operating

P.FCOS f

SIN f Efficiency Full LoCurrent

1 0.25 0.8 0.6 2.78 7.643 0.78 0.63 0.63 0.46

2 0.37 0.72 0.69 4.11 6.894 0.78 0.63 0.65 0.68

3 0.37 0.72 0.69 4.11 4.312 0.78 0.63 0.65 0.68

4 0.55 0.7 0.71 5.88 6.706 0.81 0.59 0.72 0.98

5 0.55 0.7 0.71 5.88 4.196 0.81 0.59 0.72 0.98

7 0.75 0.65 0.76 8.12 6.237 0.8 0.60 0.74 1.35

8 0.75 0.65 0.76 8.12 3.905 0.8 0.60 0.74 1.35

9 0.75 0.65 0.76 8.12 2.628 0.8 0.60 0.74 1.35

10 1.1 0.63 0.78 11.91 6.049 0.8 0.60 0.76 1.98

11 1.1 0.63 0.78 11.91 3.789 0.8 0.60 0.76 1.98

12 1.1 0.63 0.78 11.91 2.551 0.8 0.60 0.76 1.98

13 1.1 0.63 0.78 11.91 2.409 0.8 0.60 0.76 1.98

14 1.5 0.53 0.85 16.04 5.108 0.81 0.59 0.78 2.67

15 1.5 0.53 0.85 16.04 3.206 0.81 0.59 0.78 2.67

16 1.5 0.53 0.85 16.04 2.163 0.81 0.59 0.78 2.67

17 1.5 0.53 0.85 16.04 2.046 0.81 0.59 0.78 2.67

17a 1.5 0.53 0.85 16.04 2.046 0.81 0.59 0.78 2.67

18 2.2 0.49 0.87 22.15 4.731 0.86 0.51 0.80 3.69

19 2.2 0.49 0.87 22.15 2.972 0.86 0.51 0.80 3.69

20 2.2 0.49 0.87 22.15 2.008 0.86 0.51 0.80 3.69

21 2.2 0.49 0.87 22.15 1.900 0.86 0.51 0.80 3.69

22 2.2 0.49 0.87 22.15 1.206 0.86 0.51 0.80 3.69

LT POWER CABLE SIZING FO

Temperature

Pa



JK cement Al

50 deg .C

SL.NO Motor KW Starting P.FCOS f

StartingSIN f


Operating

P.FCOS f



Temperature

23 3 0.45 0.89 30.21 4.354 0.86 0.51 0.82 5.04

24 3 0.45 0.89 30.21 2.738 0.86 0.51 0.82 5.04

25 3 0.45 0.89 30.21 1.852 0.86 0.51 0.82 5.04

26 3 0.45 0.89 30.21 1.754 0.86 0.51 0.82 5.04

27 3 0.45 0.89 30.21 1.117 0.86 0.51 0.82 5.04

28 3 0.45 0.89 30.21 0.734 0.86 0.51 0.82 5.04

29 4 0.38 0.92 40.28 3.693 0.86 0.51 0.84 6.7130 4 0.38 0.92 40.28 2.327 0.86 0.51 0.84 6.71

31 4 0.38 0.92 40.28 1.579 0.86 0.51 0.84 6.71

32 4 0.38 0.92 40.28 1.498 0.86 0.51 0.84 6.71

33 4 0.38 0.92 40.28 0.959 0.86 0.51 0.84 6.71

34 4 0.38 0.92 40.28 0.636 0.86 0.51 0.84 6.71

35 5.5 0.32 0.95 56.04 3.127 0.85 0.53 0.85 9.34

36 5.5 0.32 0.95 56.04 1.976 0.85 0.53 0.85 9.34

37 5.5 0.32 0.95 56.04 1.345 0.85 0.53 0.85 9.34

38 5.5 0.32 0.95 56.04 1.279 0.85 0.53 0.85 9.34

39 5.5 0.32 0.95 56.04 0.825 0.85 0.53 0.85 9.34

40 5.5 0.32 0.95 56.04 0.553 0.85 0.53 0.85 9.34

41 5.5 0.32 0.95 56.04 0.425 0.85 0.53 0.85 9.34

43 7.5 0.31 0.95 75.00 1.917 0.87 0.49 0.87 12.5

44 7.5 0.31 0.95 75.00 1.305 0.87 0.49 0.87 12.5

45 7.5 0.31 0.95 75.00 1.242 0.87 0.49 0.87 12.5

46 7.5 0.31 0.95 75.00 0.802 0.87 0.49 0.87 12.5

47 7.5 0.31 0.95 75.00 0.539 0.87 0.49 0.87 12.5

48 7.5 0.31 0.95 75.00 0.415 0.87 0.49 0.87 12.5

49 7.5 0.31 0.95 75.00 0.328 0.87 0.49 0.87 12.5

P



JK cement Al

50 deg .C

SL.NO Motor KW Starting P.FCOS f

StartingSIN f


Operating

P.FCOS f



Temperature

50 11 0.34 0.94 111.60 2.093 0.83 0.56 0.90 18.6

51 11 0.34 0.94 111.60 1.423 0.83 0.56 0.90 18.6

52 11 0.34 0.94 111.60 1.352 0.83 0.56 0.90 18.6

53 11 0.34 0.94 111.60 0.870 0.83 0.56 0.90 18.6

54 11 0.34 0.94 111.60 0.581 0.83 0.56 0.90 18.6

55 11 0.34 0.94 111.60 0.445 0.83 0.56 0.90 18.6

56 11 0.34 0.94 111.60 0.350 0.83 0.56 0.90 18.657 11 0.34 0.94 111.60 0.265 0.83 0.56 0.90 18.6

58 11 0.34 0.94 111.60 0.214 0.83 0.56 0.90 18.6

59 15 0.32 0.95 153.00 1.279 0.84 0.54 0.91 25.5

60 15 0.32 0.95 153.00 0.825 0.84 0.54 0.91 25.5

61 15 0.32 0.95 153.00 0.553 0.84 0.54 0.91 25.5

62 15 0.32 0.95 153.00 0.425 0.84 0.54 0.91 25.5

63 15 0.32 0.95 153.00 0.336 0.84 0.54 0.91 25.5

64 15 0.32 0.95 153.00 0.255 0.84 0.54 0.91 25.5

65 15 0.32 0.95 153.00 0.207 0.84 0.54 0.91 25.5

66 18.5 0.37 0.93 186.00 1.462 0.85 0.53 0.92 31

67 18.5 0.37 0.93 186.00 0.938 0.85 0.53 0.92 31

68 18.5 0.37 0.93 186.00 0.623 0.85 0.53 0.92 31

69 18.5 0.37 0.93 186.00 0.475 0.85 0.53 0.92 31

70 18.5 0.37 0.93 186.00 0.372 0.85 0.53 0.92 31

71 18.5 0.37 0.93 186.00 0.280 0.85 0.53 0.92 31

72 18.5 0.37 0.93 186.00 0.224 0.85 0.53 0.92 31

73 18.5 0.37 0.93 186.00 0.192 0.85 0.53 0.92 31

74 22 0.35 0.94 224.40 0.893 0.85 0.53 0.92 37.4

P



JK cement Al

50 deg .C

SL.NO Motor KW

Starting P.FCOS f

StartingSIN f

StartingCurrent

StartingZ

Operating

P.FCOS f


LT POWER CABLE SIZING F

Temperature

75 22 0.35 0.94 224.40 0.595 0.85 0.53 0.92 37.4

76 22 0.35 0.94 224.40 0.455 0.85 0.53 0.92 37.4

77 22 0.35 0.94 224.40 0.358 0.85 0.53 0.92 37.4

78 22 0.35 0.94 224.40 0.270 0.85 0.53 0.92 37.4

79 22 0.35 0.94 224.40 0.218 0.85 0.53 0.92 37.4

80 22 0.35 0.94 224.40 0.187 0.85 0.53 0.92 37.4

81 22 0.35 0.94 224.40 0.169 0.85 0.53 0.92 37.4

82 22 0.35 0.94 224.40 0.152 0.85 0.53 0.92 37.4

83 30 0.34 0.94 288.00 0.581 0.83 0.56 0.93 48

84 30 0.34 0.94 288.00 0.445 0.83 0.56 0.93 48

85 30 0.34 0.94 288.00 0.350 0.83 0.56 0.93 48

86 30 0.34 0.94 288.00 0.265 0.83 0.56 0.93 48

87 30 0.34 0.94 288.00 0.214 0.83 0.56 0.93 48

88 30 0.34 0.94 288.00 0.184 0.83 0.56 0.93 48

89 30 0.34 0.94 288.00 0.167 0.83 0.56 0.93 48

90 30 0.34 0.94 288.00 0.150 0.83 0.56 0.93 48

91 30 0.34 0.94 288.00 0.133 0.83 0.56 0.93 48

92 30 0.34 0.94 288.00 0.122 0.83 0.56 0.93 48

93 37 0.29 0.96 360.00 0.395 0.84 0.54 0.93 60

94 37 0.29 0.96 360.00 0.314 0.84 0.54 0.93 60

95 37 0.29 0.96 360.00 0.240 0.84 0.54 0.93 60

96 37 0.29 0.96 360.00 0.197 0.84 0.54 0.93 60

97 37 0.29 0.96 360.00 0.171 0.84 0.54 0.93 60

98 37 0.29 0.96 360.00 0.156 0.84 0.54 0.93 60

99 37 0.29 0.96 360.00 0.142 0.84 0.54 0.93 60

100 37 0.29 0.96 360.00 0.127 0.84 0.54 0.93 60

101 37 0.29 0.96 360.00 0.117 0.84 0.54 0.93 60

P





JK cement Al

50 deg .C

SL.NO Motor KW

Starting P.FCOS f

StartingSIN f

StartingCurrent

StartingZ

Operating

P.FCOS f



Temperature

128 75 0.37 0.93 720.00 0.087 0.87 0.49 0.95 120

129 75 0.37 0.93 720.00 0.077 0.87 0.49 0.95 120

130 75 0.37 0.93 720.00 0.068 0.87 0.49 0.95 120

131 75 0.37 0.93 720.00 0.062 0.87 0.49 0.95 120

132 75 0.37 0.93 720.00 0.052 0.87 0.49 0.95 120

133 90 0.37 0.93 885.73 0.192 0.88 0.47 0.95 147.6

134 90 0.37 0.93 885.73 0.173 0.88 0.47 0.95 147.6135 90 0.37 0.93 885.73 0.155 0.88 0.47 0.95 147.6

136 90 0.37 0.93 885.73 0.136 0.88 0.47 0.95 147.6

137 90 0.37 0.93 885.73 0.124 0.88 0.47 0.95 147.6

138 90 0.37 0.93 885.73 0.087 0.88 0.47 0.95 147.6

139 90 0.37 0.93 885.73 0.077 0.88 0.47 0.95 147.6

140 90 0.37 0.93 885.73 0.068 0.88 0.47 0.95 147.6

141 90 0.37 0.93 885.73 0.062 0.88 0.47 0.95 147.6

142 90 0.37 0.93 885.73 0.052 0.88 0.47 0.95 147.6

143 90 0.37 0.93 885.73 0.045 0.88 0.47 0.95 147.6

144 110 0.19 0.98 1082.56 0.123 0.88 0.47 0.96 180.4

145 110 0.19 0.98 1082.56 0.114 0.88 0.47 0.96 180.4

146 110 0.19 0.98 1082.56 0.107 0.88 0.47 0.96 180.4

147 110 0.19 0.98 1082.56 0.066 0.88 0.47 0.96 180.4

148 110 0.19 0.98 1082.56 0.062 0.88 0.47 0.96 180.4

149 110 0.19 0.98 1082.56 0.057 0.88 0.47 0.96 180.4

150 110 0.19 0.98 1082.56 0.054 0.88 0.47 0.96 180.4

151 110 0.19 0.98 1082.56 0.041 0.88 0.47 0.96 180.4

152 110 0.19 0.98 1082.56 0.038 0.88 0.47 0.96 180.4

153 110 0.19 0.98 1082.56 0.036 0.88 0.47 0.96 180.4

P



JK cement A

50 deg .C

SL.NO Motor KW

Starting P.FCOS f

StartingSIN f

StartingCurrent

StartingZ

Operating

P.F

COS f

SIN f Efficiency Full LCurren


Temperature

154 132 0.2 0.98 1299.08 0.115 0.88 0.47 0.96 216.

155 132 0.2 0.98 1299.08 0.108 0.88 0.47 0.96 216.

156 132 0.2 0.98 1299.08 0.094 0.88 0.47 0.96 216.

157 132 0.2 0.98 1299.08 0.063 0.88 0.47 0.96 216.

158 132 0.2 0.98 1299.08 0.058 0.88 0.47 0.96 216.

159 132 0.2 0.98 1299.08 0.054 0.88 0.47 0.96 216.

160 132 0.2 0.98 1299.08 0.042 0.88 0.47 0.96 216.

161 132 0.2 0.98 1299.08 0.038 0.88 0.47 0.96 216.162 132 0.2 0.98 1299.08 0.036 0.88 0.47 0.96 216.

163 132 0.2 0.98 1299.08 0.029 0.88 0.47 0.96 216.

164 160 0.2 0.98 1592.74 0.108 0.87 0.49 0.96 265.

165 160 0.2 0.98 1592.74 0.068 0.87 0.49 0.96 265.

166 160 0.2 0.98 1592.74 0.063 0.87 0.49 0.96 265.

167 160 0.2 0.98 1592.74 0.058 0.87 0.49 0.96 265.

168 160 0.2 0.98 1592.74 0.054 0.87 0.49 0.96 265.

169 160 0.2 0.98 1592.74 0.042 0.87 0.49 0.96 265.

170 160 0.2 0.98 1592.74 0.038 0.87 0.49 0.96 265.

171 160 0.2 0.98 1592.74 0.036 0.87 0.49 0.96 265.

172 160 0.2 0.98 1592.74 0.029 0.87 0.49 0.96 265.

173 200 0.2 0.98 1860.00 0.068 0.87 0.49 0.96 310

174 200 0.2 0.98 1860.00 0.063 0.87 0.49 0.96 310

175 200 0.2 0.98 1860.00 0.058 0.87 0.49 0.96 310

176 200 0.2 0.98 1860.00 0.054 0.87 0.49 0.96 310

177 200 0.2 0.98 1860.00 0.042 0.87 0.49 0.96 310

178 200 0.2 0.98 1860.00 0.038 0.87 0.49 0.96 310

179 200 0.2 0.98 1860.00 0.036 0.87 0.49 0.96 310

180 200 0.2 0.98 1860.00 0.029 0.87 0.49 0.96 310

181 200 0.2 0.98 1860.00 0.027 0.87 0.49 0.96 310

182 200 0.2 0.98 1860.00 0.022 0.87 0.49 0.96 310

183 250 0.16 0.99 2488.65 0.055 0.87 0.49 0.96 414.

184 250 0.16 0.99 2488.65 0.052 0.87 0.49 0.96 414.

185 250 0.16 0.99 2488.65 0.039 0.87 0.49 0.96 414.

186 250 0.16 0.99 2488.65 0.037 0.87 0.49 0.96 414.

187 250 0.16 0.99 2488.65 0.035 0.87 0.49 0.96 414.

188 250 0.16 0.99 2488.65 0.028 0.87 0.49 0.96 414.

189 250 0.16 0.99 2488.65 0.026 0.87 0.49 0.96 414.

190 250 0.16 0.99 2488.65 0.022 0.87 0.49 0.96 414.

191 250 0.16 0.99 2488.65 0.021 0.87 0.49 0.96 414.



CITY CEME

ROLLER PRE

50 100 150 200 250 300

1 0.25 4C x 2.5 4C x 2.5 4C x 2.5 4C x 2.5 4C x 2.5 4C x 2.5

2 0.37 4C x 2.5 4C x 2.5 4C x 2.5 4C x 2.5 4C x 2.5 4C x 2.5

3 0.55 4C x 2.5 4C x 2.5 4C x 2.5 4C x 2.5 4C x 2.5 4C x 2.5

4 0.75 4C x 2.5 4C x 2.5 4C x 2.5 4C x 2.5 4C x 2.5 4C x 2.5

5 1.1 4C x 2.5 4C x 2.5 4C x 2.5 4C x 2.5 4C x 2.5 4C x 2.5

6 1.5 4C x 2.5 4C x 2.5 4C x 2.5 4C x 2.5 4C x 2.5 4C x 2.5

7 2.2 4C x 2.5 4C x 2.5 4C x 2.5 4C x 2.5 4C x 4 4C x 4

8 3 4C x 2.5 4C x 2.5 4C x 2.5 4C x 4 4C x 4 4C x 6

9 4 4C x 2.5 4C x 2.5 4C x 4 4C x 4 4C x 6 4C x 6

10 5.5 4C x 2.5 4C x 2.5 4C x 4 4C x 6 4C x 10 4C x 10

11 7.5 4C x 4 4C x 4 4C x 6 4C x 10 4C x 10 4C x 16

12 11 4C x 4 4C x 6 4C x 10 4C x 10 4C x 16 4C x 16

13 15 4C x 10 4C x 10 4C x 16 4C x 16 3.5C x 25 3.5C x 2

14 18.5 4C x 10 4C x 10 4C x 16 3.5C x 25 3.5C x 25 3.5C x 3

15 22 4C x 16 4C x 16 4C x 16 3.5C x 25 3.5C x 35 3.5C x 3

16 30 3.5C x 25 3.5C x 25 3.5C x 25 3.5C x 35 3.5C x 35 3.5C x 5

17 37 3.5C x 35 3.5C x 35 3.5C x 35 3.5C x 35 3.5C x 50 3.5C x 7

18 45 3.5C x 50 3.5C x 50 3.5C x 50 3.5C x 50 3.5C x 70 3.5C x 7

19 55 3.5C x 70 3.5C x 70 3.5C x 70 3.5C x 70 3.5C x 95 3.5C x 9

20 75 3.5C x 95 3.5C x 95 3.5C x 95 3.5C x 95 3.5C x 120 3.5C x 18

21 90 3.5C x 120 3.5C x 120 3.5C x 120 3.5C x 120 3.5C x 185 3.5C x 30

22 110 3.5C x 185 3.5C x 185 3.5C x 185 3.5C x 185 3.5C x 240 2#3.5C x 1

23 132 3.5C x 240 3.5C x 240 3.5C x 240 3.5C x 240 2#3.5C x 150 2#3.5C x 1

24 160 3.5C x 300 3.5C x 300 3.5C x 300 2#3.5C x 150 2#3.5C x 150 2#3.5C x 1

25 200 2#3.5C x 150 2#3.5C x 150 2#3.5C x 150 2#3.5C x 150 2#3.5C x 150 2#3.5C x 1

26 250 2#3.5C x 240 2#3.5C x 240 2#3.5C x 240 2#3.5C x 240 2#3.5C x 240 2#3.5C x 2

Note: 1. All the cables are aluminium conductors2. Deration factor considered in 0.60 (0.8*0.75)

KWCABLE LE

LT POWER CABLE SIZING FOR VAR

(STEADY STATE VOLTAGE DR

SUMMARY TABLE FOR DIFFER

SL.NO

Doc.No.:3BYN4611003-SAA



LENGTH OF CABLE 820

VOLTAGE 415

IST 15.66

COS STT 0.53

SIN STT 0.84

VOLTAGE DROP STARTING 10.9597 = 1.732 x I start x length of cable x (R Cos sta

LENGTH OF CABLE 820

VOLTAGE 415

R X

3.7 0.1

IFLC 2.61COS RUNG 0.81

SIN RUNG 0.586

VOLTAGE DROP RUNNING 2.729296



rt + x sin start) x 100 / (no of runs x 1000 x voltage)

Documents

LT Cable Sizing Calculation sheet