BS_VD

November 10, 2017 | Author: V.Pradeesh | Category: Cable, Transformer, Power Engineering, Electricity, Electrical Components

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BS_VD - Building Services_Voltage Drop - calculation is a xls software made for a project in my experience, It’s a very ...

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2008086 xxxx P.O.BOX 111

Manama, Kingdom of Bahrain.

XXXXXX VOLTAGE DROP& CABLE SIZING CALCULATIONS

Note: Cable lengths used are for voltage drop calculations only. Actual length of the cables to be measured by the contractor.

Page 1 of 5

IES

Project

Head Office

Part of structure APARTMENT FOR SALE

P.0.Box 111 Manama, Kingdom of Bahrain

Date of Issue Rev. No.

XXXXX

Job ref. 2008086 Sheet no.

0

1 of 2

Write "C" for Cable or "B" for Busduct

Type (XLPE for Cable & CU / AL for Busduct)

Operating Voltage (V)

Length ( Mt)

TCL in KW

MD in KW

MD in KVA

Power Factor

ACB/ MCCB Rating

Voltage Drop/A/M (mV)

% Voltage Drop Allowed (%)

Max. Voltage Drop allowed (V)

Load Current A

Act. Voltage Drop (v)

Act. % Voltage Drop (%)

Installation Type. G/A/D

Cable/ Busduct Derating Factor

Voltage drop within limit?

Cable or Busduct Current Rating (A)

Load Current (A)

MCCB Rating (A)

Cable Derated Current (A)

MCCB rating within load current?

TRANSFORMER 01

3

7

1

1000

C

XLPE

400

30

1808

1158

1447

0.8

2500

0.160

0.3

1.2

2089

1.43

0.36

A

0.8

CHECK

8498

2089

2500

6798

OK

Connected To

Cable size can be reduced?

Cable Size mm2 or Busduct Rating

MP-AS1-001

Number of Cores

A

Cable From

Number of Runs

Cable Ref.

Single/ Three Phase

VOLTAGE DROP CALCULATIONS

CHECK 4

B 1

SMP-AS1-301

MP-AS1-001

3

1

4

120

C

XLPE

400

25

138

77

97

0.8

250

0.37

2.0

8.0

140

1.29

0.32

A

0.8

OK

353

140

250

282

OK

NO

4

2

SMP-AS1-401

MP-AS1-001

3

1

4

120

C

XLPE

400

30

138

77

97

0.8

250

0.37

2.0

8.0

140

1.55

0.39

A

0.8

OK

353

140

250

282

OK

NO

4

3

SMP-AS1-501

MP-AS1-001

3

1

4

120

C

XLPE

400

35

138

77

97

0.8

250

0.37

2.0

8.0

140

1.81

0.5

A

0.8

OK

353

140

250

282

OK

NO

4

4

SMP-AS1-601

MP-AS1-001

3

1

4

120

C

XLPE

400

40

138

77

97

0.8

250

0.37

2.0

8.0

140

2.06

0.5

A

0.8

OK

353

140

250

282

OK

NO

4

5

SMP-AS1-701

MP-AS1-001

3

1

4

120

C

XLPE

400

45

138

77

97

0.8

250

0.37

2.0

8.0

140

2.32

0.6

A

0.8

OK

353

140

250

282

OK

NO

4

6

SMP-AS2-801

MP-AS1-001

3

1

4

120

C

XLPE

400

50

138

77

97

0.8

250

0.37

2.0

8.0

140

2.58

0.6

A

0.8

OK

353

140

250

282

OK

NO

4

7

SMP-AS1-901

MP-AS1-001

3

1

4

120

C

XLPE

400

55

138

77

97

0.8

250

0.37

2.0

8.0

140

2.84

0.7

A

0.8

OK

353

140

250

282

OK

NO

4

8

SMP-AS1-1001

MP-AS1-001

3

1

4

120

C

XLPE

400

60

152

84

106

0.8

250

0.37

2.0

8.0

152

3.38

0.8

A

0.8

OK

353

152

250

282

OK

NO

4

9

SMP-AS1-1101

MP-AS1-001

3

1

4

120

C

XLPE

400

65

152

84

106

0.8

250

0.37

2.0

8.0

152

3.66

0.9

A

0.8

OK

353

152

250

282

OK

NO

4

10

SMP-AS1-1201

MP-AS1-001

3

1

4

70

C

XLPE

400

70

72

42

52

0.8

160

0.60

2.0

8.0

75

3.16

0.8

A

0.8

OK

251

75

160

201

OK

CHECK 4

11

SMP-AS1-1301

MP-AS1-001

3

1

4

185

C

XLPE

400

75

78

78

98

0.8

300

0.26

2.0

8.0

141

2.74

0.7

A

0.8

OK

463

141

300

370

OK

CHECK 4

12

SMP-AS1-001

MP-AS1-001

3

1

4

185

C

XLPE

400

25

187

150

188

0.8

300

0.26

2.0

8.0

271

1.76

0.4

A

0.8

OK

463

271

300

370

OK

CHECK 4

13

SMP-AS1-002

MP-AS1-001

3

1

4

95

C

XLPE

400

25

104

83

104

0.8

200

0.45

2.0

8.0

150

1.68

0.4

A

0.8

OK

304

150

200

243

OK

CHECK 4

12

SMP-AS1-B01-CHWP

MP-AS1-001

3

1

4

95

C

XLPE

400

40

95

95

119

0.8

200

0.45

2.0

8.0

171

3.09

0.8

A

0.8

OK

304

171

200

243

OK

CHECK 4

15

SPARE

16

SPARE

IES

Project

Head Office

Part of structure APARTMENT FOR SALE

P.0.Box 111 Manama, Kingdom of Bahrain

Date of Issue Rev. No.

XXXX

Job ref. 2008086 Sheet no.

0

2 of 2

Write "C" for Cable or "B" for Busduct

Type (XLPE for Cable & CU / AL for Busduct)

Operating Voltage (V)

Length ( Mt)

TCL in KW

MD in KW

MD in KVA

Power Factor

ACB/ MCCB Rating

Voltage Drop/A/M (mV)

% Voltage Drop Allowed (%)

Max. Voltage Drop allowed (V)

Load Current A

Act. Voltage Drop (v)

Act. % Voltage Drop (%)

Installation Type. G/A/D

Cable/ Busduct Derating Factor

Voltage drop within limit?

Cable or Busduct Current Rating (A)

Load Current (A)

MCCB Rating (A)

Cable Derated Current (A)

MCCB rating within load current?

TRANSFORMER 02

3

7

1

1000

C

XLPE

400

30

1786

1166

1458

0.8

2500

0.160

0.3

1.2

2104

1.44

0.36

A

0.8

CHECK

8498

2104

2500

6798

OK

Connected To

Cable size can be reduced?

Cable Size mm2 or Busduct Rating

MP-AS1-002

Number of Cores

A

Cable From

Number of Runs

Cable Ref.

Single/ Three Phase

VOLTAGE DROP CALCULATIONS

CHECK 4

B 1

SMP-AS2-301

MP-AS1-002

3

1

4

120

C

XLPE

400

30

162

90

112

0.8

250

0.37

2.0

8.0

162

1.79

0.45

A

0.8

OK

353

162

250

282

OK

NO

4

2

SMP-AS2-401

MP-AS1-002

3

1

4

120

C

XLPE

400

35

162

90

112

0.8

250

0.37

2.0

8.0

162

2.09

0.52

A

0.8

OK

353

162

250

282

OK

NO

4

3

SMP-AS2-501

MP-AS1-002

3

1

4

120

C

XLPE

400

40

162

90

112

0.8

250

0.37

2.0

8.0

162

2.39

0.6

A

0.8

OK

353

162

250

282

OK

NO

4

4

SMP-AS2-601

MP-AS1-002

3

1

4

120

C

XLPE

400

45

162

90

112

0.8

250

0.37

2.0

8.0

162

2.69

0.7

A

0.8

OK

353

162

250

282

OK

NO

4

5

SMP-AS2-701

MP-AS1-002

3

1

4

120

C

XLPE

400

50

162

90

112

0.8

250

0.37

2.0

8.0

162

2.99

0.7

A

0.8

OK

353

162

250

282

OK

NO

4

6

SMP-AS2-801

MP-AS1-002

3

1

4

120

C

XLPE

400

55

162

90

112

0.8

250

0.37

2.0

8.0

162

3.29

0.8

A

0.8

OK

353

162

250

282

OK

NO

4

7

SMP-AS2-901

MP-AS1-002

3

1

4

120

C

XLPE

400

60

162

90

112

0.8

250

0.37

2.0

8.0

162

3.59

0.9

A

0.8

OK

353

162

250

282

OK

NO

4

8

SMP-AS2-1001

MP-AS1-002

3

1

4

50

C

XLPE

400

65

38

23

29

0.8

125

0.87

2.0

8.0

41

2.33

0.6

A

0.8

OK

197

41

125

158

OK

CHECK 4

9

SMP-AS2-1101

MP-AS1-002

3

1

4

120

C

XLPE

400

70

64

64

80

0.8

250

0.37

2.0

8.0

115

2.99

0.7

A

0.8

OK

353

115

250

282

OK

NO

4

10

SMP-AS2-001

MP-AS1-002

3

1

4

120

C

XLPE

400

25

152

132

165

0.8

250

0.37

2.0

8.0

238

2.20

0.6

A

0.8

OK

353

238

250

282

OK

NO

4

11

EMP-AS1-001

MP-AS1-002

3

2

4

240

C

XLPE

400

30

400

320

400

0.8

630

0.21

2.0

8.0

577

1.82

0.5

A

0.8

OK

1092

577

630

874

OK

12

SPARE

13

SPARE

CHECK 4

1 Max. Voltage Drop Allowed (V) V = Operating Voltage * % of Voltage Drop Allowed 2 Load Current (A) A = Total Watts / 1.732 * Operating Voltage * Power Factor 3 Actual Voltage Drop (V) 1 Run Cable (V) = Voltage Drop/A/M * Load Current * Cable Length / 1000 2 Run Cable (V) = (Voltage Drop/A/M (Load Current / 2) Cable Length / 1000) 4 Max. Voltage Drop Allowed at Starting (V) V = Operating Voltage * & of Voltage Drop Allowed at Starting 5 Actual Voltage Drop at Starting (V) 1 Run Cable (V) = Max. Voltage Drop Allowed * Motor Starting Current * Cable Length / 1000 2 Run Cable (V) = (Max. Voltage Drop Allowed (Motor Starting Current / 2) Cable Length / 1000) 6 Dearated Current (A) A = load Current / 0.92 * 0.95 * 0.985 *0.84 * 0.8 IF(ISERROR(AVERAGE(A1:A4)),"No Numbers",AVERAGE(A1:A4)) Derating Factor Calculation for Cables a) Cables directly buried in ground Soil resitivity facor = 1.14 Ground temparature factor = 0.86 Depth of laying factor( for 0.6 mtr ) = 0.98 Group factor for Multicore cables = 0.84( 3 ckts)/ 0.77(6 ckts) Overall Derating factor =1.14* 0.86 * 0.98 * 0.84 = 0.81( 3 ckts) Overall Derating factor =1.14* 0.86 * 0.98 * 0.77= 0.74( 3 ckts) b) Cables in ducts Soil resitivity facor = 1.06 Ground temparature factor = 0.86 Depth of laying factor( for 0.6 mtr ) = 0.99 Group factor for Multicore cables = 0.93( 3 ckts)/ 0.9 (6 ckts) Overall Derating factor =1.06 * 0.86 * 0.99 * 0.93 = 0.84 (3 ckts) Overall Derating factor =1.06 * 0.86 * 0.99 * 0.9 = 0.81 (6 ckts) c)

For Cables in Air Ambient temparature factor @40oC (inside building) = 0.91 Spacing factor (BS 7671 table 4B1) (4 ckts)= 0.88 Overall Derating factor = 0.91*0.88 = 0.8

Area of Condr.

VD/A/M

Ground

Air

Duct

2.5 4 6 10 16 25 35 50 70 95 120 150 185 240 300 400 500 630 800 1000

16.400 10.200 6.800 4.000 2.500 1.650 1.150 0.870 0.600 0.450 0.370 0.300 0.260 0.210 0.185 0.165 0.180 0.170 0.170 0.160

34 47 57 82 115 150 180 215 265 315 360 405 460 530 590 667 770 840 888 942

25 34 43 60 99 131 162 197 251 304 353 406 463 546 628 728 918 1027 1119 1214

17.5 23 29 39 94 125 150 175 215 260 300 335 380 440 495 570 620 670 692 735

* Single Core Cables

1 2 3 4 5 6 7

Incomer Breaker Ratings =< 7 kw 40 A 7.1 to 63 A 11kw 11. 1 to 14 80 A kw 14.1 to 100 A 17.5 kw 17.6 to 22 125 A kw 22.1 to 28 160 A kw 28.1 to 35 kw

200 A

VD/M Bus bar Ct. VD/A/M( (SQARE D) @ 35oC mV) Cu @ 0.8 P.F 800 1000 1200 1350 1600 2000 2500 3000 3200 4000 5000

* * * *

0.108 0.094 0.069 0.063 0.053 0.046 0.033 0.029 0.025 0.020 0.015

0.09 0.09 0.08 0.09 0.09 0.09 0.08 0.09 0.08 0.08 0.08

MCCB

Area of Condr.

10 16 20 32 40 50 63 80 100 125 160 200 225 250 300 350 400 630 800 1000 1600 2000 3200 4000 5000

1.5 2.5 4 6 10 10 16 25 35 50 70 95 120 150 185 240 300 400 500 630 630 630 630 630 630

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

BS_VD

Short Description

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