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Cable Size and Voltage Drop Calculation, Cheat Sheet of Electrical and Electronics Engineering

Université Ibn Zohr AgadirElectrical and Electronics Engineering

Medium voltages electrical câble sizing

Typology: Cheat Sheet

2019/2020

Uploaded on 07/19/2023

m-said-bet-alpha6
m-said-bet-alpha6 🇲🇦

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:INPUT DATA SHEET: :CALCULATION: :RESULTS:
Select Your Load Motor (Only)
Electrical Load Total Load 24000.00 Kw
Toal Electrical Load 24000
Kw
Demand Factor (Assume)
1Selection of Cable O.K
Auto Tra.
Consumed Load
24000.00
Kw
No of Runs of Cable O.K
0.75
0.75
Cable Short Circuit Capacity
0.75
Starting SinØ 0.66
Voltage Drop Whithin Limit
80
0.90
Demand Factor 1 Runing SinØ 0.44
System Voltage V(L-L) 20000 Volt 3 Ph Load in KVA 26666.67 KVA
System Voltage V(L-N) 11547 Volt 1.7
P.F 0.90 Full Load Current
769.82
Amp
Enter Short circuit Current If You Know K.Amp
Cable Installation Media Ground 2 2 Cable Installation Media Ground
Ground Temperature (K2) 30 °C
No of Trench 1
No of Cable/Trench 1 Ground Temp. Correction Factor (K2) 0.93
Cable Selection is Proper
Distance Between Cable 0.125 mt Soil Correction Factor for Air (K3) 1.18
No. of Runs of selected cable 1 Group Factor for Ground (K4) 1.00
Cable Laying on The Depth of 1 Meter Cable Laying Depth Factor (K5) 1.00
Soil Thermal Resistiivty 1 Km/Watt Total Derating Factor 1.00 1.10
Nature of Soil (k3) Very Wet Soil Conductor Resistance. 0.04
Ohm / km
Distance 1000 Meter Conductor Reactance 0.088
Mho/km
Type of Cable HT XLPE ( 11 KV-Un Earthed) 1cX1000 CU Cable Current Capacity 790 Amp
Allowable voltage drop 2 %Derating Current 790.00 Amp
4
Min.No of Runs of Selected Cable 0.97
Voltage Drop 0.51 %
Receving end Voltage 19898.03 Volt
Allowable voltage drop 400 Volt
N.B: Enter Your Data in White Background Cell
Formula For % Voltage Drop:= S.C Capacity of Selected Cable 143.00 K.Amp
0
jignesh.parmar www.electricalnotes.wordpress.com jiguparmar@yahoo.com
Starting CosØ
Runing CosØ
(1.732 X (Full Load Current)X(RCosØ+j SinØ)XLengthX100) / Line
VoltageXNo of RunX1000
Cable Detail derating Detail
Calculate Cable Size and Voltage Drop
pf3
pf4
pf5
pf8
pf9
pfa
pfd
pfe
pff
pf12
pf13
pf14
pf15
pf16
pf17

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Download Cable Size and Voltage Drop Calculation and more Cheat Sheet Electrical and Electronics Engineering in PDF only on Docsity!

:INPUT DATA SHEET: :CALCULATION: :RESULTS:

Select Your Load Motor (Only) (^) Electrical Load Total Load 24000.00 Kw Toal Electrical Load 24000 Kw^ Demand Factor (Assume) 1 Selection of Cable^ O.K Auto Tra. Consumed Load 24000.00 Kw No of Runs of Cable O.K 0.75 (^) 0.75 Cable Short Circuit Capacity 0.75 Starting SinØ 0.66 Voltage Drop Whithin Limit (^80) 0. Demand Factor 1 Runing SinØ 0. System Voltage V(L-L) 20000 Volt 3 Ph Load in KVA 26666.67 KVA System Voltage V(L-N) 11547 Volt 1. P.F 0.90 Full Load Current 769.82 Amp Enter Short circuit Current If You Know K.Amp Cable Installation Media Ground 2 2 Cable Installation Media Ground Ground Temperature (K2) 30 °C No of Trench 1 No of Cable/Trench 1 Ground Temp. Correction Factor (K2) 0. Distance Between Cable No. of Runs of selected cable 0.125 mt 1 Soil Correction Factor for Air (K3)Group Factor for Ground (K4) 1.181.00 Cable Selection is Proper Cable Laying on The Depth of 1 Meter Cable Laying Depth Factor (K5) 1. Soil Thermal Resistiivty 1 Km/Watt Total Derating Factor 1.00 1. Nature of Soil (k3) Very Wet Soil Conductor Resistance. 0.04 Ohm / km Distance 1000 Meter Conductor Reactance 0.088 Mho/km Type of Cable HT XLPE ( 11 KV-Un Earthed) 1cX1000 CU Cable Current Capacity 790 Amp Allowable voltage drop 2 % Derating Current 790.00 Amp (^4) Min.No of Runs of Selected Cable 0. Voltage Drop 0.51^ % Receving end Voltage 19898.03 Volt Allowable voltage drop 400 Volt N.B: Enter Your Data in White Background Cell Formula For % Voltage Drop:= S.C Capacity of Selected Cable 143.00 K.Amp 0 jignesh.parmar www.electricalnotes.wordpress.com [email protected] Starting CosØ Runing CosØ (1.732 X (Full Load Current)X(RCosØ+j SinØ)XLengthX100) / Line VoltageXNo of RunX Calculate Cable Size and Voltage Drop^ Cable Detail^ derating Detail

Cable Details

PVC Flexible

1cX0.5 39 0 4 4 1cX0.75 26 0 7 7 1cX1 19.5 0 11 11 1cX1.5 13.3 0 15 15 1cX2.5 7.98 0 19 19 1cX4 4.95 0 26 26 1cX6 3.3 0 35 35 1cX10 1.91 0 46 46 1cX16 1.21 0 62 62 1cX25 0.78 0 80 80 1cX35 0.554 0 102 102 1cX50 0.386 0 138 138 1cX70 0.272 0 214 214 1cX95 0.206 0 254 254 1cX120 0.161 0 300 300 2cX0.5 39 0 4 4 2cX0.75 26 0 7 7 2cX1 19.5 0 11 11 2cX1.5 13.3 0 15 15 2cX2.5 7.98 0 19 19 2cX4 4.95 0 26 26 3cX0.5 39 0 4 4 3cX0.75 26 0 7 7 3cX1 19.5 0 11 11 3cX1.5 13.3 0 15 15 3cX2.5 7.98 0 19 19 3cX4 4.95 0 26 26

1.1 KV PVC Insulated

Aluminium Copper Resi React Resi React ohm/km ohm/km ohm/km ohm/km 1cX4 8.8^ 0.158^ 5.52^ 0. 1cX6 5.53 0.148 3.69 0. 1cX10 3.7 0.138 2.19 0. 1cX16 2.29 0.128 1.38 0. 1cX25 1.44^ 0.12^ 0.87^ 0. 1cX35 1.04 0.114 0.627 0. 1cX50 0.77 0.11 0.463 0. 1cX70 0.53 0.103 0.321 0. 1cX95 0.38 0.101 0.231 0. 1cX120 0.3 0.096 0.184 0. 1cX150 0.25 0.094 0.149 0. 1cX185 0.2 0.092 0.12 0. 1cX240 0.15 0.09 0.091 0. 1cX300 0.12 0.088 0.074 0. Nominal Conductor Area (Sq.mm) Maximum Conductor Resistance at 20°C (ohm/km) Maximum Conductor Reactance at 20°C (ohm/km) Aluminium Current Carrying Capacity (Amp) Copper Current Carrying Capacity (Amp) Nominal Conductor Area (Sq.mm)

3.8 / 6.6 KV(6.6 KV Earthed) AL/COPPER COND, XLPE INSU

Aluminium Copper Resi React Resi React

6.6 /11 KV(6.6KV Un-Earthed/11KV Earthed) AL/COPPER COND, XLP

Nominal Conductor

Aluminium Copper Resi React Resi React

11 KV(11KV Un Earthed) AL/COPPER COND, XLPE INSULA

Aluminium Copper Resi React Resi React Nominal Conductor Area (Sq.mm) Nominal Conductor

ails

1.1 KV PVC Insulated

Aluminum Copper Ground Duct Air Ground Duct Air Aluminium Copper Amp Amp Amp Amp Amp Amp — — — 39 38 35 0.304 0. 39 37 35 49 48 44 0.456 0. 51 51 47 65 64 60 0.760 1. 66 65 64 85 83 82 1.220 1. 86 84 84 110 110 110 1.900 2. 100 100 105 130 125 130 2.660 4. 120 115 130 155 150 165 3.800 5. 140 135 155 190 175 205 5.320 8. 175 155 190 220 200 245 7.220 10. 195 170 220 250 220 280 9.120 13. 220 190 250 280 245 320 11.40 17. 240 210 290 305 260 370 14.10 21. 270 225 335 345 285 425 18.20 27. 295 245 380 375 310 475 22.8 34. Short Circuit Current Rating for 1Sec.duration in K. Amps Short Circuit Current Rating for 1Sec.duration in K. Amps

HOME

Aluminum Copper Ground Duct Air Ground Duct Air Aluminium Copper

d) AL/COPPER COND, XLPE INSULATED CABLES

Aluminum Copper Ground Duct Air Ground Duct Air Aluminium Copper Short Circuit Current Rating for 1Sec.duration in K. Amps Rating for

d) AL/COPPER COND, XLPE INSULATED CABLES

Aluminum Copper Ground Duct Air Ground Duct Air Aluminium Copper Amp Amp Amp Amp Amp Amp 195 240 240 9. 220 280 280 12. 240 335 335 15. 275 380 380 19. 320 450 450 24. 360 510 510 31. 410 595 595 41. 460 690 690 51. 525 800 800 65. 590 910 910 82. 650 1010 1010 104 Short Circuit Current Rating for 1Sec.duration in K. Amps

2cX1.5 — — — — — — — —

3cX1.5 — — — — — — — —

4cX 1.5 — — — — — — — —

Copper Duct Air Aluminium Copper Amp Amp 47 45 0.376 0. 59 57 0.564 0. 78 77 0.940 1. 102 106 1.504 2. 115 145 2.350 3. 140 175 3.290 5. 165 215 4.700 7. 200 270 6.580 10. 235 330 8.930 13. 265 380 11.28 17. 300 430 14.10 21. 335 495 17.39 26. 385 590 22.56 34. 430 670 28.20 42. Short Circuit Current Rating for 1Sec.duration in K. Amps