ct & pt with generator calculaitons
DESCRIPTION
CT & PT with generator calculationsTRANSCRIPT
Electrical Data Calculation 1
Electrical Scope equipment Range selection Chart
Enter the Power in MW of the alternator 10000 kwEnter the Voltage in KV of the alternator 6300 voltsEnter the power Factor of the Alternator 0.8KVA Rating of the alternator 12500 KVAKVAR Rating of the alternator 7500 KVAREnter the Frequency of the alternator 50 HzEnter the types Protection for Alternator IP-54Enter the IP Protection for Exciter IP-54Current of the alternator 1146 AmpsSpeed of the alternator in RPM 1500Number of Poles 4 PoleInsulation Class of Alternator FType of alternator HT/LT 1 for HT-1,LT-0Temperature Rise of Alternator BNumber of coolerCooler Location
LAPT Calculation sheet
Entry of Cable or Bus Duct in Lapt TopExit of Cable in Lapt BottomPotential Transformer VA Burden for protection core-1 100 VAPrimary Voltage of the PT 6300 VoltsSecondary Voltage of the PT 110 VoltsPotential Transformer Accuracy Burden for Metering co 0.5Short circuit Fault Level of Panel 26.3 KA
NGR Calculation sheet
Entry of Cable or Bus Duct in Lapt TopShort circuit Fault Level of Panel 26.3 KA Accuracy
CT Selection Sheet QuantityCT PrimaCT Secondary Burden
Differential CT 6 1400 1 PS
Metering CT Core-1 3 1400 1 0.5 60VA
Droop & Power factor CT 1 1400 1 0.5 30VA
Metering CT Core-2 for Protection 3 1400 1 5P10 60VA
Short ckt maintance CT Not Required 3 1146 PS
Earth Fault CT 1 100 1 PS 10VAType of AVR 1 0 if Digital -0,Analog-1
Vk>200
Electrical Data Calculation 2
NGR Resistor Calculation
Volatge of the generator 6300Limiting current after star Point 100Resistance of the NGR 36.4
Metreing Cum Synchronizing Panel Calculation
Meters Voltage Supply to panel for metering 110Meters Current Supply to panel for metering 1Auxilary voltage Supply to meters from PT 110
Metres Range for MCSP Panel Quatity Range from Range to TypeAmmeter 3 0 1400Voltmeter 1 0 7560Voltmeter selecter switch 1 0 7560KVA Meter 1 0 15000KVAR Meter 1 0 9000KW Meter 1 0 12000Power Fector meter 1 0.5 lag 0.5 leadFrequency meter 1 45 55KWH+MDI Meter 1 0 12000
Synchronising Component Quantity Range from Range to TypeDouble frequency meter 2 45 55Double voltmeter 2 0 7560Check Synchronising Relay SKE- 1 0 20degAux. Synchronising Relay 25X 1Guard Relay VAA21 25G 1
Power Transformer Calculation
Power transformer required for the TG Set 15625 KVAPrimary Volatge of the Transformer L-L 6300 VoltsEnter the grid Voltage L-L 6300 VoltsSecondary Voltage of the Transformer L-L 6300 VoltsTransformer ratio K 1Frequency of the transformer 50 HzCurrent of the Primary of power transfromer 1431.96Current of the Secondary of power transfromer 1431.96
Electrical Data Calculation 3
MCC Panel Load List for the TG Set
Project Name
Capacity
Frame Name
Duty
1 AOP Motor 11.0 21.0 Start/Stop 415 volts2 Barring Gear Motor 11.0 21.0 Start/Stop 415 volts3 GVC-1 Motor 0.9 #N/A Continuous 415 volts4 Vepour Extractor Motor 0.8 #N/A Continuous 415 volts5 CEP-1 Motor 0.0 #N/A Continuous 415 volts6 CEP-2 Motor 0.0 #N/A Continuous 415 volts7 Actuator Motor 0.0 #N/A Continuous 415 volts8 CEP-3 Motor 0.0 #N/A Standby 415 volts9 ACOP Motor 7.5 14.0 Standby 415 volts
10 Spare CEP feeder 0.0 #N/A 415 volts
11 Spare GVC feeder G1 1.2 415 volts
12 Spare BG feeder 11.0 21.0 415 volts
13 Battery Charger Rating 12.24297 50A MCCB is sufficient1415 Total #N/A Amps16
Small Motor Code ValueG1 .37Kw MotorG2 .55 Kw MotorG3 .75Kw motor
Si No
Motor Name
KW Rating
Current rating
it is applicable only if main feeder fails
it is applicable only if main feeder fails
it is applicable only if main feeder fails
Electrical Data Calculation 4
MCC Panel Check List
Feeder Name Mot Ratin Current Switch Fuse Contactor OLR CTR1 Incomer2 AOP Motor 11.0 21.0 63 50 64 14 - 23 30/13 Barring Gear Motor 11 21.0 63 50 64 14 - 23 30/14 GVC-1 Motor 0.85 #N/A #N/A #N/A #N/A #N/A #N/A5 Vepour Extractor Moto 0.75 #N/A #N/A #N/A #N/A #N/A #N/A6 CEP-1 Motor 0 #N/A #N/A #N/A #N/A #N/A #N/A7 CEP-2 Motor 0 #N/A #N/A #N/A #N/A #N/A #N/A8 Actuator Motor 0 #N/A #N/A #N/A #N/A #N/A #N/A9 CEP-3 Motor 0 #N/A #N/A #N/A #N/A #N/A #N/A
10 ACOP Motor 7.5 14.0 32 25 32 9 - 15 20/111 Spare CEP feeder 0 #N/A #N/A #N/A #N/A #N/A #N/A12 Spare GVC feeder G1 1.2 32 4 16 0.9 - 1.5 5/113 Spare BG feeder 11 21.0 63 50 64 14 - 23 30/1
TCP Panel control circuit ammeter rating check ListFeeder Name Motor Rating
1 AOP Motor 11.0 0 - 30/1802 Barring Gear Motor 11.0 0 - 30/1803 GVC-1 Motor 0.9 #N/A4 Vepour Extractor Moto 0.8 #N/A5 CEP-1 Motor 0.0 #N/A6 CEP-2 Motor 0.0 #N/A7 Actuator Motor 0.0 #N/A8 CEP-3 Motor 0.0 #N/A9 ACOP Motor 7.5 0 - 20/120
Battery Booste & Booste cum charging Current Calculation sheet
Enter the AH capacity of the Battery Charger 100
Booste Chargering Current of the battery 20
Float chargering Current of the Battery 15
Electrical Data Calculation 5
DC Motor starter Panel Resistance & wattage loss check List
Enter the Voltage Supply of the DC Motor 110Enter the armature current of the Motor 17Enter the number of times to Current to Limit 2Enter the number of Steps of resistance in armatue circuit 2Enter the Parallel resistance in each step 4Total resistance required to limit the Current 3.23529Resistance in Each Steps 1.61765Resistance of each arm 6.47059Power Loss in each arm of resistance 467.5
AVR & Excitation transformer Calculation calculation sheet
Electrical Data Calculation 6
Short Circuit analysis of power system
Enter Numbers of Generator Connected into the system 2Enter Numbers of Motor Connected into the system 3Enter Numbers of Transformer Connected into the system 6
Generator Data ,Motor Data & Transformer data
Gen Generator data
Symbole KVA Rating KV RatingG 2 444 50 25 45 6G 1 78 88 88 8 8G #NAME?
G #NAME?
G #NAME?
G #NAME?
G #NAME?
G #NAME?
G #NAME?
G #NAME?
G #NAME?
G #NAME?
G #NAME?
G #NAME?
MotoMotor data
Symbole KVA Rating KV RatingM 3 21 22 23 24 25M 2 16 17 18 19 20M 1 11 12 13 14 15M #NAME?
M #NAME?
M #NAME?
M #NAME?
M #NAME?
M #NAME?
M #NAME?
M #NAME?
M #NAME?
Xd Xd' Xd''
Xd Xd' Xd''
A B C D E F G H I J K1
23456789
10
11121314151617181920212223242526
27
282930313233343536373839
M #NAME?
M #NAME?
Tra Transformer data
Symbole KVA Rating Pri KV Rating Sec KV RatinT 6
T 5
T 4
T 3
T 2
T 1
T #NAME?
T #NAME?
T #NAME?
T #NAME?
T #NAME?
T #NAME?
T #NAME?
Xd Xd' Xd''
A B C D E F G H I J K4041424344
45
46474849505152535455565758
KW Code Current Switch Fuse Contactor OLR CTRG1 T1 1.2 32.0 4.0 16.0 0.9 - 1.5 5/1G2 T2 1.6 32.0 4.0 16.0 1.4 - 2.3 5/1G3 T3 1.8 32.0 6 16.0 1.4 - 2.3 5/1
1.10 T4 2.6 32.0 6 16.0 2 - 3.3 5/11.50 T5 3.5 32.0 10 16.0 3 - 5 5/12.20 T6 5.0 32.0 16 16.0 4.5 - 7.5 10/13.70 T7 7.5 32.0 20 16.0 6 - 10 10/15.50 T8 11.0 32.0 25 16.0 9 - 15 15/17.50 T9 14.0 32.0 25 32 9 - 15 20/19.30 T10 18.0 32.0 32 64 14 - 23 25/1
11.00 T11 21.0 63.0 50 64 14 - 23 30/115.00 T12 28.0 63.0 50 64 20 - 33 40/118.50 T13 34.0 63.0 63 64 30 -50 40/122.00 T14 47.0 125.0 80 64 30 -50 60/130.00 T15 55.0 125.0 100 64 38 - 63 70/133.50 T16 60.0 125.0 125 70 45 - 75 75/137.00 T17 68.0 125.0 125 80 45-75 75/145.00 T18 80.0 200.0 180 95 66-110 100/155.00 T19 100.0 200.0 180 110 66-110 120/167.50 T20 120.0 200.0 200 140 90-150 145/175.00 T21 135.0 200.0 200 140 90-150 160/180.00 T22 139.0 200.0 200 265 90-150 170/190.00 T23 165.0 250.0 250 265 135-225 200/1
110.00 T24 200.0 315.0 315 265 135-225 240/1130.00 T25 230.0 315.0 315 265 180-300 275/1147.00 T26 260.0 400.0 400 265 180-300 315/1150.00 T27 275.0 400.0 400 325 180-300 330/1160.00 T28 280.0 400.0 400 325 180-300 340/1168.00 T29 300.0 400.0 400 325 270-450 360/1180.00 T30 320.0 400.0 400 325 270-450 385/1200.00 T31 340.0 630.0 500 400 270-450 400/1
Feeder Name Rating CODE Current1 Incomer2 AOP Motor 11.0 T11 21.03 Barring Gear Motor 11.0 T11 214 GVC-1 Motor 0.9 #N/A #N/A5 Vepour Extractor Motor 0.8 #N/A #N/A6 CEP-1 Motor 0.0 #N/A #N/A7 CEP-2 Motor 0.0 #N/A #N/A
8 Actuator Motor 0.0 #N/A #N/A9 CEP-3 Motor 0.0 #N/A #N/A
10 Spare feeder 7.5 T9 1411 Spare feeder 0.0 #N/A #N/A12 Spare feeder G1 T1 1.213 Spare feeder 11.0 T11 21
Ammeter Cable SC Nub KW Rating Current-Pr
0 - 5/30 3c x 2.5 0.37 SC-1 1000.0 114.6
0 - 5/30 3c x 2.5 0.55 SC-2 1500.0 171.8
0 - 5/30 3c x 2.5 0.75 SC-3 2000.0 229.1
0 - 5/30 3c x 2.5 SC-4 2500.0 286.4
0 - 5/30 3c x 2.5 SC-5 3000.0 343.7
0 -10/60 3c x 2.5 SC-6 3500.0 400.9
0 -10/60 3c x 2.5 SCM CT TABLE SC-7 4000.0 458.2
0 - 15/90 3c x 2.5 AVR (type digital,analoge) SC-8 4500.0 515.5
0 - 20/120 3c x 4 Digital Not Required SC-9 5000.0 572.8
0 - 25/150 3c x 4 Analoge Required SC-10 5500.0 630.0
0 - 30/180 3c x 6 SC-11 6000.0 687.3
0 - 40/240 3c x 10 SC-12 6500.0 744.6
0 - 40/240 3c x 16 SC-13 7000.0 801.9
0-60/360 3c x 16 SC-14 7500.0 859.2
0-70/420 SC-15 8000.0 916.4
0-75/450 SC-16 8500.0 973.7
0-75/450 SC-17 9000.0 1031.0
0-100/600 SC-18 9500.0 1088.3
0-120/720 SC-19 10000.0 1145.5
0-145/870 SC-20 10500.0 1202.8
0-160/960 SC-21 11000.0 1260.1
0-170/1020 SC-22 11500.0 1317.4
0-200/1200 SC-23 12000.0 1374.6
0-240/1440 SC-24 12500.0 1431.9
0-275/1650 SC-25 13000.0 1489.2
0-315/1890 SC-26 13500.0 1546.5
0-330/1980 SC-27 14000.0 1603.8
0-340/2040 SC-28 14500.0 1661.0
0-360/2160 SC-29 15000.0 1718.3
0-385/2310 SC-30 15500.0 1775.6
0-400/2400 SC-31 16000.0 1832.9
SC-32 16500.0 1890.1
Switch Fuse Contactor OLR CTR Ammeter SC-33 17000.0 1947.4SC-34 17500.0 2004.7
63 50 64 14 - 23 30/1 0 - 30/180 SC-35 18000.0 2062.063 50 64 14 - 23 30/1 0 - 30/180 SC-36 18500.0 2119.2#N/A #N/A #N/A #N/A #N/A #N/A SC-37 19000.0 2176.5#N/A #N/A #N/A #N/A #N/A #N/A SC-38 19500.0 2233.8#N/A #N/A #N/A #N/A #N/A #N/A SC-39 20000.0 2291.1#N/A #N/A #N/A #N/A #N/A #N/A SC-40 20500.0 2348.3
#N/A #N/A #N/A #N/A #N/A #N/A SC-41 21000.0 2405.6#N/A #N/A #N/A #N/A #N/A #N/A SC-42 21500.0 2462.932 25 32 9 - 15 20/1 0 - 20/120 SC-43 22000.0 2520.2#N/A #N/A #N/A #N/A #N/A #N/A SC-44 22500.0 2577.532 4 16 0.9 - 1.5 5/1 0 - 5/30 SC-45 23000.0 2634.763 50 64 14 - 23 30/1 0 - 30/180 SC-46 23500.0 2692.0
SC-47 24000.0 2749.3SC-48 24500.0 2806.6SC-49 25000.0 2863.8SC-50 25500.0 2921.1SC-51 26000.0 2978.4SC-52 26500.0 3035.7SC-53 27000.0 3092.9SC-54 27500.0 3150.2SC-55 28000.0 3207.5SC-56 28500.0 3264.8SC-57 29000.0 3322.1SC-58 29500.0 3379.3SC-59 30000.0 3436.6SC-60 30500.0 3493.9SC-61 31000.0 3551.2SC-62 31500.0 3608.4SC-63 32000.0 3665.7
Current Sec
Cable Data Sheet of the selection of XLPE/PEX cable for generator rated Current
Efferctive resistance =
Constant (or resistance increament ) due to skin effect
Constant (or resistance increament ) due to Proximity effect
Constant (or resistance increament ) due to sheath losses
Constant (or resistance increament ) due to armor losses
DC Resistance of ConductorI Current in the Conductor in Amps
sheath losses = (conductor loss)
armor losses = (conductor loss)
r* l/ATable-01
Resisitivity
Annealed Cu 10.37 1.72E-08 234.5Hard Cu 10.66 1.77E-08 241Hard Al 17 2.83E-08 228
Conductor Temperature in Degree Celsius
Constant varying with conductor material
Table-02(a) Temperature XLPE PEXNormal 90 75Emergency 130 90Table-02(b) Solid Type Multiple Conductor Shielded & Single ConductorVoltage Level Norm.Temp Emg Temp1 to 9 Kv 85 10510 to 17 Kv 80 10018 to 29 Kv 75 9530 to 39 Kv 70 9040 to 49Kv 65 8550 to 59 Kv 60 8060 to 69 Kv 55 75
1. AOP
2. BGM3. ACOP-1
4. ACOP-2
Reff P loss in conductor /|I|2
l1
l2
l3
l4
RDC
l3 *
l4 *
RDC =
ANSI Unit (Ohm-Cmil/ft)
SI unit (Ohm-m)
T0 =
R1 = Conductor resistance at Temperature t1
R2 = Conductor resistance at Temperature t2
t1,t2 =
T0 =
R1 / R2 = T0 + t1 /T0 +t2
5. CEP-1
6. CEP-2
7. Oil Mist/ VEM: 0.85KW, 50HZ, FRANKE Make
8. GVC Blower : 0.37KW
abcdefghijklmnopqrst
8.25
: 180IGPM, 20HP, 1440 RPM
: 11KW, 415V, 50RPM, 50HZ: 25IGPM, 10HP, 1450 RPM
: 25IGPM, 10HP, 1450 RPM
: 30KW
: 30KW
: 0.85KW, 50HZ, FRANKE Make
: 0.37KW