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KV

KV

Transformer

KVA

%

Power Voltage SC Z%

Main Cable Runs X mm2 per phase

Main Breaker

A

Length = mtr

Motor LoadPower & Lighting Load

Max. Demand KWPower Factor

Max. Demand KW

Power Factor

32000.4

5.75630

460

27000.370370.91982

5000

6.41437720

27000.91982

0.95

Power Analysis Total Mximum demand = 2700 KWTotal Apparent Power 2935.357 KVATransformer Loading = 91.7299 % Total Current = 4236.947 APower Factor 0.91982Required Capacitive KVAR to 264.2124 KVARreach Short Circit Analysis Min MaxAt Transformer Terminals 64073.34 80406.96At Main Incomer end 47218.11 58723.46At load of 18438.29 24680.10

Voltage Drop Calclations: Vlt %Vd on Main Incomer 7.18 3.11

3.89 1.69

Protection Relay Settings

KW and located

Meter Away from Busbar

PF =

Amp and Mtr lentgh

Update

Long Time ( L)Short Time (S)Inst. Setting (I)Ground Setting (I)

TMS

I/In t (s)0.8...3.7...8.3...0.2

10....1.0...0.050.05

mm2 CSA ,XVd on

64073.34 80406.9647218.11 58723.4641996.85 53913.49

0.85 10.003.79 1.048.40 0.050.20 0.050.200.20

18438.29 24680.10

1700 1854.276 740.49883611000 1081.081 410.7752474

0.91680.925

0.3993466664440810.379967103839266

2700 2935.3570.919820029727233 0.95

36.82963 91.729900714236.94691511458

170 Amp140 L

70 CSA2 140

2842.105887.44712935.357

1151.66264.2124

System Data Inputs Faults CalcultionsTransformer Apparent power (MVA) 3200 SC at Tr. terminal (KA) Transformer Secondary Voltage ( KV) 0.4 SC at Incomer Terminal (KA) Transformer SC impedence (Z%) 5.75 SC at MDB Bus Bar (KA) Main Cable CSA (mm2) 630 Protection Settings Runs per phase 4 Over load Setting (L)Length (m) 60 Short Time (S) Total Maximum Demand (KW) 2700 Instant. Trip (I)Motor Loading Ratio % 0.37037 Ground Fault (G)Power Factor 0.91982 TMSMDB Main Breaker Rating 5000 Plug Setting Adjustment

Down Stream Fault CalculationThe Feeding Cable CSA (mm2) 6.414377 Shot Circuit Current (KA) The Distance of Faulted Load (mtr) 20

Min (Steady) Max (0.5 cycle) 64073.34 80406.96 ` IDMT I/In 8.40 7.139464 7.4447218.11 58723.46 T 0.643946 0.698329 0.68371541996.85 53913.49 INST. I/In 7.44

I/In t(sec) T 0.010.85 10.00 Tr. Curve ?t/In 21.003.79 1.04 2.0634488.40 0.05 I rush 14.88 12.00 9.110.20 0.05 0.08 0.1 0.120.200.20

Min (Steady) Max (0.5 cycle) 18438.29 24680.10

6.959748 6.48 6.000.707687 0.735271 0.767438491 Irush/In = -144.4*T + 26.44

7.44 7.44 7.44 Rush Transformer0.227677 0.451252 0.683714754

16.80 14.70 12.60 Tmax Cable=(0.07*2000*CSA/(IF/Run))^23.686036 5.216013 7.787540051

6.22 3.33 0.44 Trans T max=5653*(IF/IL)^-2.60.14 0.16 0.18

19.25173456

R X Z X/R K ISC SteadyMV 0.000139485 0.000288 0.00032Transformer 0.001145165 0.002637 0.002875 2.3028 1.282435 57831.53Main Cable CSA (mm2) 0.000535714 0.0012 1.28078 40976.3MDB 1.577283E-05 0.000705 1.333286 35755.04

I total 4236.946915 M 17.39130435 ISC thro. 73686.03IM 1560.451907

F 2.996359914 M 0.250228The Feeding Cable CSA (mm2) C 6987.054472

ISC MN 18438.29ISC MAX 24680.1

6987.0545

1966.234869-4566.978844

ISC Min ISC Max

64073.34 80406.9647218.11 58723.4641996.85 53913.49

Drop Voltage Calculator Drop Voltage Calculator Sending Line Voltage (V) 400.00

R 0.0225 SINF 0.391918 Cable Size (mm2) 70.00X 0.0056 Length (mtr) 140.00VD 3.892259 Runs (No./Phase) 2.00

Load (Amp) 170.00Power Factor 0.92Drop Phase Voltage (V) 3.89Drop Voltage (%) 1.69Cable Loading (%) 33.68

Drop Voltage Calculator Drop Voltage Calculator Sending Line Voltage (V) 400.00

R 0.000536 SINF 1 Cable Size (mm2) 630.00X 0.0012 Length (mtr) 60.00VD 7.18468 Runs (No./Phase) 4.00

Load (Amp) 4236.95Power Factor 0.92Drop Phase Voltage (V) 7.18Drop Voltage (%) 3.11Cable Loading (%) 109.56