OHM

Area wise electrical load

Rule of thumb (ref: CIBSE)Lighting10 - 12 Watts /Sq.mSmall Power 15 - 45 Watts /Sq.mAir Conditioning60 Watts /Sq.mPassenger lifts10 Watts /Sq.mSmall computer room200 - 400 Watts /Sq.mBespoke call centre500 - 1500 Watts /Sq.m

Health and Technical Memorandum

Typical electrical diversity factors for healthcare premises (ref: HTM 06-01, Chapter 3, Table 2)Notes:DescriptionPower density (W/Sq.m)PFBuilding diversitySubstation diversityConnected load diversityOff-peak diversityGrowth factorPower density: The power density relates to the relevant internal floor area of the healthcare premises.AHU fans15 - 250.950.70 - 0.901.000.70 - 0.900.680.10Building services pump1 - 30.950.70 - 0.901.000.70 - 0.900.680.10Power factor (PF): Power factor is assumed to be the corrected power factor at each substaion.Lifts5 - 80.950.23 - 1.350.500.30 - 0.500.600.05Chiller25 - 350.950.90 - 0.951.000.90 - 0.950.800.05Building diversity: The building diversity reflects that not all substations within the healthcare premises willGeneral low power9 - 250.950.49 - 0.600.700.70 - 0.850.650.20have the same operating profile. The building diversity is the product of the connected load and substation Information systems3 - 60.950.800.801.000.650.20diversity. The building diversity is the actual demand seen at the point of common coupling with the PES.Medical equipment6 - 160.950.35 - 0.490.700.50 - 0.700.200.20General lighting9 - 151.000.49 - 0.630.700.70 - 0.900.800.15Substation diversity: Substation diversity reflects that not all areas, of any one substation, will have the sameSpecialist lighting0.9 - 1.51.000.35 - 0.630.700.50 - 0.900.500.15operating profile, for example clinics and 24-hour areas. The substation diversity is multiplied by the connectedTask lighting1 - 21.000.45 - 0.540.600.75 - 0.900.400.15load diversity to produce the building diversity.Medical lighting0 - 11.000.42 - 0.540.600.70 - 0.900.700.15Connected load diversity: Connected load diversity reflects that any electrical system (fixed medical equipment etc) will not be operating at full demand or used to maximum capacity at all times of the day.

Off-peak diversity: Off-peak diversity reflects that not all equipment will be used (to the same profile) at night as in the day (for example 12-hour clinics etc). The off-peak diversity is not used in these calculations,but will be an element used in the energy calculations.

Growth factor: Growth factor is an allowance for the natural expansion in electrical equipment used, and potential remodelling of the hospital. Growth factor is applied to switchgear, cable sizes, and transformer sizes etc. The function of the growth factor is to ensure that the electrical network will not need premature replacement.

Conduit

Conduit FactorsCable FactorsCable FactorsConduit Diameter (mm)Capacity FactorSingle core PVC insulated cables in straight runsSingle core PVC insulated cables in straight runs of conduit16290 of conduit not exceeding 3m in length exceeding 3m in length OR in runs of any length incorporating bends or sets20460Type of ConductorSizeFactorType of ConductorSizeFactor25800Solid1.022Solid or Stranded1.0163214001.5271.5222.5392.530Standard1.5314.0432.5436.0584.05810.01056.08810.0146

Conduit Capacity Factors (Exceeding 3M in length)Conduit Diameter (MM)1620253216202532162025321620253216202532StraightOne bendTwo bendsThree bendsFour bends1.029046080014001883085439471772865149001582564638181302133886921.529046080014001822945289231672704878571432334227501111823336002.02904608001400177286514900158256463818130213388692971592925292.52904608001400171278500878150244442783120196358643861412604743.029046080014001672704878571432334227501111823336003.51792905219111622634758371362224047201031693115634.0177286514900158256463818130213388692971592955294.5174282507889154250452800125204376667911492755005.0171278500878150244442783120196358643861412604746.01672704878571432334227501111823336007.01622634758371362224047201031693115638.0158256463818130213388692971592925299.01542504528001252043736679114927550010.015024444278312019638564386141260474

TrunkingTray

Cable Term Trunking Terms XLPE/SWA/PVCCable Trays (mm)AluminiumType of conductorFactorTrunking SizeCapacity2 Core6mm15.9Size1C 2C3C3.5C4CSolid/1 Sq.mm 6.450 x 50103710mm18501.5712.512.5NA15Solid/1.5 Sq.mm 7.175 x 50155516mm205075mm2.57.513.514NA16.5Solid/2.5 Sq.mm 10.275 x 75237125mm24.375100mm481515.5NA18Stranded/1 Sq.mm7.4100 x 50209135mm27.9100150mm691617NA19.5Stranded/1.5 Sq.mm8.1100 x 7531894 Core6mm18.7150225mm101017.519NA20Stranded/2.5 Sq.mm11.4100 x 100425210mm21.1225300mm16111821NA22Stranded/4 Sq.mm15.2150 x 50309116mm22.9300450mm2512.5202223.524Stranded/6 Sq.mm22.9150 x 75474225mm29.1450600mm3513.521.5252627Stranded/10 Sq.mm36.3150 x 100639435mm32.1600750mm501524.5273031Stranded/16 Sq.mm50.3150 x 150969750mm32750900mm7017283232.535Stranded/25 Sq.mm75.4225 x 75711470mm37.79002-600mm9519333436.538Stranded/35 Sq.mm95225 x 100929895mm41.712002-750mm12021353840.542Stranded/50 Sq.mm133225 x 15014652120mm47.115002-900mm15022.537424445.5Category 512.63225 x 22521766150mm51.41852540.5465051Category 5e13.58300 x 10012788185mm56.62402845525557.5Category 616.64300 x 15019447240mm63300305056.56166.5Category 729.83300 x 30038000300mm68.84003456646871.5RG-6/U20.38Single Core 6491B (LSF)5003862.5727579.5RG-6/UQ24.8110mm6.8RG-728.6216mm8CopperRG-8/U45.9425mm9.8Size1c PVC2c PVC2c XLPE3c PVC3c XLPE4c PVC4c XLPERG-8X16.1135mm111.53.99.611.511.511.512.513.5RG-9/U49.5750mm132.54.210.412.512.512.514.014.5RG-11/U47.7470mm1544.811.513.513.513.515.517.0RG-56/U26.48MICC/PVC Heavy Duty65.412.615.915.015.017.018.5RG-58/U10.832 core1.5mm (2H1.5)9.6106.814.41816.50.019.020.5RG-59/U16.112.5mm (2H2.5)10.4168.017.520.617.521.821.523.6RG-59A/U16.114mm (2H4)11.5259.819.524.322.526.924.029.1RG-60/U50.516mm (2H6)12.63511.020.527.923.029.626.532.1RG-62/U16.1110mm (2H10)14.45013.024.025.327.028.432.531.3RG-62A16.114 core2.5mm (4H2.5)11.87015.027.028.132.032.033.536.8RG-14210.614mm (4H4)13.19517.028.531.933.036.738.540.6RG-174/U2.826mm (4H6)14.412019.033.035.136.040.041.545.8RG-178/U1.410mm (4H10)16.515021.034.038.241.045.145.049.9RG-179/U2.7116mm (4h16)19.618523.537.043.346.049.350.554.9RG-180B/U5.8625mm (4h25)22.924028.042.548.350.054.558.061.0RG-188A/U2.7930030.045.552.655.559.564.066.5RG-213/U45.9440034.051.558.063.565.872.075.4RG-214/U50.51RG-218209.57RG-223/U12.63RG-316/U2.93RG-400/U10.61RG-402/U5.55RG-405/U2.1

Voltage drop

1Max. Voltage Drop Allowed (V)Area of Condr.VD/A/MGroundAirDuctMCCBArea of Condr.V = Operating Voltage * % of Voltage Drop Allowed2.516.400342517.5101.5410.200473423162.52Load Current (A)66.800574329204A = Total Watts / 1.732 * Operating Voltage * Power Factor104.000826039326162.500115999440103Actual Voltage Drop (V)251.65015013112550101 Run Cable (V) = Voltage Drop/A/M * Load Current * Cable Length / 1000351.15018016215063162 Run Cable (V) = (Voltage Drop/A/M (Load Current / 2) Cable Length / 1000)500.8702151971758025700.600265251215100354Max. Voltage Drop Allowed at Starting (V)950.45031530426012550V = Operating Voltage * & of Voltage Drop Allowed at Starting1200.370360353300160701500.300405406335200955Actual Voltage Drop at Starting (V)1850.2604604633802251201 Run Cable (V) = Max. Voltage Drop Allowed * Motor Starting Current * Cable Length / 10002400.2105305464402501502 Run Cable (V) = (Max. Voltage Drop Allowed (Motor Starting Current / 2) Cable Length / 1000)3000.1855906284953001854000.1656677285703502406Derated Current (A)5000.180770918620400300A = load Current / 0.92 * 0.95 * 0.985 *0.84 * 0.86300.1708401027670630400IF(ISERROR(AVERAGE(A1:A4)),"No Numbers",AVERAGE(A1:A4))8000.170888111969280050010000.16094212147351000630Derating Factor Calculation for Cables1600630a) Cables directly buried in groundBus bar Ct. @ 35oCVD/A/M(mV)VD/M (SQARE D) Cu @ 0.8 P.F2000630Soil resitivity facor = 1.148000.1080.0863200630Ground temparature factor = 0.8610000.0940.0944000630Depth of laying factor( for 0.6 mtr ) = 0.9812000.0690.0835000630Group factor for Multicore cables = 0.84( 3 ckts)/ 0.77(6 ckts)13500.0630.085Overall Derating factor =1.14* 0.86 * 0.98 * 0.84 = 0.81( 3 ckts)16000.0530.085* Single Core CablesOverall Derating factor =1.14* 0.86 * 0.98 * 0.77= 0.74( 3 ckts)20000.0460.09225000.0330.082Incomer Breaker Ratingsb) Cables in ducts 30000.0290.0871=< 7 kw40 ASoil resitivity facor = 1.0632000.0250.08127.1 to 11kw63 AGround temparature factor = 0.8640000.0200.081311. 1 to 14 kw80 ADepth of laying factor( for 0.6 mtr ) = 0.9950000.0150.075414.1 to 17.5 kw100 AGroup factor for Multicore cables = 0.93( 3 ckts)/ 0.9 (6 ckts)517.6 to 22 kw125 AOverall Derating factor =1.06 * 0.86 * 0.99 * 0.93 = 0.84 (3 ckts)622.1 to 28 kw160 AOverall Derating factor =1.06 * 0.86 * 0.99 * 0.9 = 0.81 (6 ckts)728.1 to 35 kw200 A

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

Busbar

FormulaeAluminiumCopperV = 3.L.I(R.Cos + X1.Sin ) 10 [V]ResistanceReactanceResistanceReactanceR (mohm/m)X1 (mohm/m)R (mohm/m)X1 (mohm/m)Where as,1000.365700.117511000.210610.10711V = Voltage Drop (V)2000.365700.117512000.201800.10531 = Load Distribution Constant3000.268500.082123000.175370.09991L = Line Length (m)4000.268500.082124000.157570.09331I = Line Current (A)6000.151700.075426000.096620.08548R = Resistance (m/m)8000.098400.020168000.069640.02540X1 = Inductive Reactance (m/m)10000.065630.0156810000.050750.01938Cos = Load Factor12500.047330.0112612500.037890.01484Note: a constant is on amperic value17500.035750.0097617500.030240.0118620000.029870.0079720000.025150.0098025000.023040.0067525000.018950.0075730000.018860.0050232500.015120.0060540000.011920.0023245000.010080.0041550000.007850.0012455000.008380.00343

Lighting

FormulaeLampsTypeBaseWattlmLampsTypeBaseWattlmLight sourceLm/WLumens O/P = Lux(Req.) x Area / M.F x U.FIncandescentBulb shapedE2760730Induction1008000Tungsten incandescent light bulb157596515012000Halogen lamp20Where as,1001380DischargeLinear (70W)RX7s726500Fluorescent lamp60M.F = Maintenance Factor1502200Linear (150W)14713500LED lamp113U.F = Utilisation Factor 2003150LinearFc225024200Metal halide lamp87R.I = Area x (Length x Breadth) / Height x (Length + Breadth)FluorescentCompact2G1018110040036000High pressure sodium vapour lamp117241700100090000Low pressure sodium vapour lamp1503628001950200000Mercury vapour lamp502G11181200Bulb shapedG8,5 (35W)393300241800G8,5 (70W)726700362900G12 (35W)393300403500G12 (70W)7266600554800G12 (150W)15014500806000GX12-1 (50W)5323002D10650GX12-1 (100W)974900161050Main voltageBulb shapedG9252602113504049028205060820383050751100G235250LinearR7s608407400100160096001502500119002003200G24/GX2410600300500013900500950018120075016500261800100022000322400150036000423200200044000574300Extra low voltage halogenBulb shapedGY6,352032070520035900Linear (T5)G541405012606270751450838590180013830G4560Linear (T5) FHG51413501014021210020320282900353650Linear (T5) FQG5242000393500494900545000807000Linear (T8)G13106501475015950161250302400363350383300585200Linear (T12)G13101000201150402800654800Linear (T2)W4,3633085401175013930Integrated ballastGX53730"U" shaped2G1318950362700584500CircularG10q221350322050402900Circular (T5)2GX13221800403200554200

Feeder Fault Current

IntroductionNotes

This program calculates the available fault current at any point along the length of a feeder.1.The source of the feeder is usually the secondary side of a transformer, and the available fault currentat this point may be calculated using the transformer fault current calculator.Information regarding the available fault current at the source of the feeder must be available.2.The fault current in a feeder is usually calculated at the downstream end of the feeder, in order toAll data is entered, and results displayed, on the input & output Sheet. Only the input and output sheetdetermine the maximum fault current at the panel or other equipment being served by the feeder.needs to be printed.In this case, the total length of the feeder should be entered.

TheoryWireResistance, RReactance, XSizeper 1000m.per 1000m.The available fault current in a feeder is a maximum at the source of the feeder, and is reduced linearly2.510.17060.239501along it's length due to the impedace of the feeder. By knowing the available fault current at the source,46.561680.223097and the impedance of the feeder per unit length, it is possible to determine theavailable fault current at any63.9370080.206693point along its length. Since this method accounts for the vector sum of the resistance and reactance102.5590550.213255components of the total conductor impedance, it is a more accurate method than typically used for this type161.6076120.209974of calculation. The formula is:251.017060.19685350.6561680.187008 F = V / sqrt(P) / ((L x R / 1000) ^ 2 + (L x X / 1000 + V / (A x sqrt(P))) ^ 2) ^ 0.5 + 4 x M + 5 x N500.5249340.187008700.3280840.177165Where:950.2591860.1706041200.2066930.167323F= Available fault current at source (A)1500.1476380.167323V= Circuit voltage (use line voltage if three-phase and phase voltage if single-phase) (V)1850.1279530.164042P= Number of phases (1 or 3)2400.0951440.15748L= Distance from source of feeder to point of interest (m.)3000.0820210.15748R= Resistance of feeder per 1000 m. ()4000.0688980.15748X= Reactance of feeder per 1000 m. ()5000.0590550.150919A= Available fault current at the source of the feeder (A)M= Total fault current contribution of induction motors (A)N= Total fault current contribution of synchronous motors (A)

Short-circuit current, Isc = I (100 / %X) = Base kVA x (100 / %X)whereV= normal phase voltage in voltsI= full-load current in amperes at base kVA%X = Percentage reactance of the system on base kVA upto the fault point%X = (I X / V) x 100

Capacitor Bank

FormulaeCapacitor Value, Breaker & Cable sizeskVAR = P x ( tan1 - tan2)kVARAmpsSqmm501254C x 50Where as,752004C x 95P - Power in watts1002504C x 150tan1 = tan(cos-1 p.f)1755002R. 4C x 150tan2 =tan(cos-1 p.f)2005002R. 4C x 1502256302R.4C x 1852506302R.4C x 1852758002R.4C x 2403008002R.4C x 2403258002R.4C x 24035010003R.4C x 18537510003R.4C x 18540010003R.4C x 18542512503R.4C x 30045012503R.4C x 30047512503R.4C x 30050012503R.4C x 300

Earthing

Earth Resistance of Single Rod or Pipe electrode is calculated as per BS 7430, NEC 7430Ground resistivity for various kinds of soil and concreteFault level at LT side of DGIMVA1/ X EqR=/23.14xL (loge (8xL/d)-1)Type of groundGround resistivity [m]Fault current ( If )IMVA/ ((Sqrt.3) x 0.415)Where =Resistivity of Soil ( Meter),Range of valuesAverage valueLine to Earth VoltageU0L=Length of Electrode (Meter),Boggy ground2 - 5030ZSU0/ IfD=Diameter of Electrode (Meter)Adobe clay2 - 20040Soil ResistivitySilt ans sand-clay ground, humus20 - 260100Duration of Earth FaulttThe Earth Resistance of Single Rod or Pipe electrode is calculated as per IS 3040:Sand and sandy ground50 - 3,000200 (moist)Max. permissible current densityi = (7.57*103)/Sqrt(r t)R=100x/23.14xL (loge(4xL/d))Peat> 1,200200Required Earth Electrode area for the above Fault currentA = (If / i )Where =Resistivity of Soil ( Meter),Gravel (moist)50 - 3,0001,000 (moist)Diameter of PipeDL=Length of Electrode (cm),Stony and rocky ground100 - 8,0002,000Length in contact with soilLD=Diameter of Electrode (cm)Concrete: 1 part cement + 3 parts sand50 - 300150Earth Electrode areaE aPDL1 part cement + 5 parts gravel100 - 8,000400Reqd No of Electrodes A / E a

Diesel Generator

Linear Load :General Equipments, HeaterAmperes when kVA is knownGuide to units:Non-Linear Load :UPS,Invertor,Ballast,VFDConverting kVA to KwHP =HorsepowerConverting kW to kVAkW =Kilo WattsConverting kW to HPkVA =Kilo Volt AmpskVA Required to run motorsI =Ampere or CurrentV =VoltsPF =Power Factor

Lightning Protection

Rolling sphere methodProtection levelProtection effeciencyMaximum impulse currentTable 1 - Protection Radius of Lightning Conductors (According to NFC 17 102)Protection angle methodLevel I + ADDE > 0,98>200Rp(L=30m)(L=45m)(L=60m)Mesh methodLevel I0,95 3MCF3M>3MCFTF1Standard41343Standard412.558Standard41258159163.52136CHECKin straight runs of conduit not exceeding 3m in length1620253216202532162025321620253216202532584343435843585858435858159CHECK2Standard41258Standard412.558Solid41239155163.52136CHECK16290Type of ConductorSizeFactorStraightOne bendTwo bendsThree bendsFour bends584358585843585839433939155CHECK3Standard41258Standard41258Standard412581743211947OK204601.02904608001400188308543947177286514900158256463818130213388692584358585843585858435858174OK4Standard41258Standard412.558Standard412581743211947OK25800Solid1.0221.52904608001400182294528923167270487857143233422750111182333600584358585843585858435858174OK5Standard41258Standard412.558Standard412581743211947OK3214001.5272.0290460800140017728651490015825646381813021338869297159292529584358585843585858435858174OK 2.5392.52904608001400171278500878150244442783120196358643861412604740ERROR:#N/A000ERROR:#N/A000ERROR:#N/A000CHECK Solid3.02904608001400167270487857143233422750111182333600CHECKCHECKCHECKCHECK0ERROR:#N/A000ERROR:#N/A000ERROR:#N/A000CHECK StandardStandard1.5313.5179290521911162263475837136222404720103169311563CHECKCHECKCHECKCHECK0ERROR:#N/A000ERROR:#N/A000ERROR:#N/A000CHECK 2.5434.017728651490015825646381813021338869297159295529CHECKCHECKCHECKCHECK0ERROR:#N/A000ERROR:#N/A000ERROR:#N/A000CHECK 104.0584.517428250788915425045280012520437666791149275500CHECKCHECKCHECKCHECK0ERROR:#N/A000ERROR:#N/A000ERROR:#N/A000CHECK 216.0885.017127850087815024444278312019635864386141260474CHECKCHECKCHECKCHECK0ERROR:#N/A000ERROR:#N/A000ERROR:#N/A000CHECK 3210.01466.0167270487857143233422750111182333600CHECKCHECKCHECKCHECKCHECKCHECKCHECKCHECK0ERROR:#N/A000ERROR:#N/A000ERROR:#N/A000CHECK 437.0162263475837136222404720103169311563CHECKCHECKCHECKCHECKCHECKCHECKCHECKCHECK0ERROR:#N/A000ERROR:#N/A000ERROR:#N/A000CHECK 54Cable Factors8.015825646381813021338869297159292529CHECKCHECKCHECKCHECKCHECKCHECKCHECKCHECK0ERROR:#N/A000ERROR:#N/A000ERROR:#N/A000CHECK6single core PVC insulated cables9.015425045280012520437366791149275500CHECKCHECKCHECKCHECKCHECKCHECKCHECKCHECK7in straight runs of conduit exceeding 3m in length OR10.015024444278312019638564386141260474CHECKCHECKCHECKCHECKCHECKCHECKCHECKCHECK8in runs of any length incorporating bends or sets9Type of ConductorSizeFactor162025321620253216202532162025321620253216202532162025321011Solid or Stranded1.0161.01772865149001.01772865149001.01883085439471.01883085439471.01883085439471.029046080014001.02904608001400121.5221.51672704878571.51672704878571.51822945289231.51822945289231.51822945289231.529046080014001.52904608001400132.5302.01582564638182.01582564638182.01772865149002.01772865149002.01772865149002.029046080014002.02904608001400144.0432.51502444427832.51502444427832.51712785008782.51712785008782.51712785008782.529046080014002.529046080014006.0583.01432334227503.01432334227503.01672704878573.01672704878573.01672704878573.029046080014003.0290460800140010.01053.51362224047203.51362224047203.51622634758373.51622634758373.51622634758373.51792905219113.51792905219114.01302133886924.01302133886924.01582564638184.01582564638184.01582564638184.01772865149004.01772865149004.51252043766674.51252043766674.51542504528004.51542504528004.51542504528004.51742825078894.51742825078895.01201963586435.01201963586435.01502444427835.01502444427835.01502444427835.01712785008785.01712785008786.01111823336006.01111823336006.01432334227506.01432334227506.01432334227506.01672704878576.01672704878577.01031693115637.01031693115637.01362224047207.01362224047207.01362224047207.01622634758377.01622634758378.0971592925298.0971592925298.01302133886928.01302133886928.01302133886928.01582564638188.01582564638189.0911492755009.0911492755009.01252043736679.01252043736679.01252043736679.01542504528009.015425045280010.08614126047410.08614126047410.012019638564310.012019638564310.012019638564310.015024444278310.0150244442783

16202532162025321620253216202532162025321620253216202532

1.029046080014001.029046080014001.029046080014001.029046080014001.029046080014001.029046080014001.029046080014001.529046080014001.529046080014001.529046080014001.529046080014001.529046080014001.529046080014001.529046080014002.029046080014002.029046080014002.029046080014002.029046080014002.029046080014002.029046080014002.029046080014002.529046080014002.529046080014002.529046080014002.529046080014002.529046080014002.529046080014002.529046080014003.029046080014003.029046080014003.029046080014003.029046080014003.029046080014003.029046080014003.029046080014003.51792905219113.51792905219113.51792905219113.51792905219113.51792905219113.51792905219113.51792905219114.01772865149004.01772865149004.01772865149004.01772865149004.01772865149004.01772865149004.01772865149004.51742825078894.51742825078894.51742825078894.51742825078894.51742825078894.51742825078894.51742825078895.01712785008785.01712785008785.01712785008785.01712785008785.01712785008785.01712785008785.01712785008786.01672704878576.01672704878576.01672704878576.01672704878576.01672704878576.01672704878576.01672704878577.01622634758377.01622634758377.01622634758377.01622634758377.01622634758377.01622634758377.01622634758378.01582564638188.01582564638188.01582564638188.01582564638188.01582564638188.01582564638188.01582564638189.01542504528009.01542504528009.01542504528009.01542504528009.01542504528009.01542504528009.015425045280010.015024444278310.015024444278310.015024444278310.015024444278310.015024444278310.015024444278310.0150244442783

TK

Project:Date:Revision:

Calculate size and term factors of TRUNKING

Sr. No.Trunking Ref:Cable DetailsTotal Required Factor (mm)Select Trunking Width (mm)Trunking Capacity Factor (mm)Space for Future (%)ResultType/SizeQtyCable Factor (mm)Type/SizeQtyCable Factor (mm)Type/SizeQtyCable Factor (mm)Type/SizeQtyCable Factor (mm)Type/SizeQtyCable Factor (mm)Cable Term Trunking Terms 12345TOTAL1Solid/2.5 Sq.mm 110.2Solid/1 Sq.mm 16.4Stranded/1.5 Sq.mm308.1Stranded/1.5 Sq.mm18.1Stranded/2.5 Sq.mm111.4279.150 x 50103773.09OKType of conductorFactorTrunking SizeCapacity10.210.26.46.48.12438.18.111.411.4279.12Solid/1.5 Sq.mm 57.1Solid/1 Sq.mm 66.4Category 6316.64452Stranded/1.5 Sq.mm568.1Stranded/2.5 Sq.mm711.4657.2335650 x 50103736.62OK7.135.56.438.416.6445249.933568.1453.611.479.8657.233563Solid/1.5 Sq.mm 57.1Solid/1 Sq.mm 66.4Stranded/1.5 Sq.mm38.1Stranded/1.5 Sq.mm68.1Stranded/2.5 Sq.mm711.4226.650 x 50103778.15OKSolid/1 Sq.mm 6.450 x 5010377.135.56.438.48.124.38.148.611.479.8226.64Solid/1.5 Sq.mm 57.1Solid/1 Sq.mm 66.4Stranded/1.5 Sq.mm38.1Stranded/1.5 Sq.mm68.1Stranded/2.5 Sq.mm711.4226.650 x 50103778.15OKSolid/1.5 Sq.mm 7.175 x 5015557.135.56.438.48.124.38.148.611.479.8226.65Solid/1.5 Sq.mm 57.1RG-60/U650.50512Stranded/1.5 Sq.mm38.1Stranded/1.5 Sq.mm68.1Stranded/2.5 Sq.mm711.4491.2307250 x 50103752.63OKSolid/2.5 Sq.mm 10.275 x 7523717.135.550.50512303.030728.124.38.148.611.479.8491.230726Solid/1.5 Sq.mm 57.1Solid/1 Sq.mm 66.4Stranded/1.5 Sq.mm48.1Stranded/1.5 Sq.mm68.1Stranded/2.5 Sq.mm711.4234.750 x 50103777.37OKStranded/1 Sq.mm7.4100 x 5020917.135.56.438.48.132.48.148.611.479.8234.77Solid/1.5 Sq.mm 57.1Solid/1 Sq.mm 66.4RG-60/U50050.50512Stranded/1.5 Sq.mm68.1Stranded/2.5 Sq.mm60011.432215.06300 x 3003800015.22OKStranded/1.5 Sq.mm8.1100 x 7531897.135.56.438.450.5051225252.568.148.611.4684032215.06 Stranded/2.5 Sq.mm11.4100 x 100425200000000000 Stranded/4 Sq.mm15.2150 x 50309100000000000 Stranded/6 Sq.mm22.9150 x 75474200000000000 Stranded/10 Sq.mm36.3150 x 100639400000000000 Stranded/16 Sq.mm50.3150 x 150969700000000000 Stranded/25 Sq.mm75.4225 x 75711400000000000 Stranded/35 Sq.mm95225 x 100929800000000000Stranded/50 Sq.mm133225 x 15014652Category 512.626285.4225 x 22521766Category 5e13.578885.6300 x 10012788Category 616.644526.2300 x 15019447Category 729.829378.3300 x 30038000RG-6/U20.37680686.86RG-6/UQ24.81302177.57RG-728.61995778.13RG-8/U45.9369710.3RG-8X16.111936.1RG-9/U49.5741710.7RG-11/U47.7382510.5RG-56/U26.47898927.82RG-58/U10.8255.0RG-59/U16.111936.1RG-59A/U16.111936.1RG-60/U50.5051210.8RG-62/U16.111936.1RG-62A16.111936.1RG-14210.60958254.95RG-174/U2.822.55RG-178/U1.401.8RG-179/U2.712.5RG-180B/U5.863.68RG-188A/U2.792.54RG-213/U45.9369710.3RG-214/U50.5051210.8RG-218209.57222RG-223/U12.626285.4RG-316/U2.932.6RG-400/U10.60958254.95RG-402/U5.54950123.58RG-405/U2.102.20

TR

Project:Date:Revision:

CABLE TRAY Calculation

ItemCable FromConnected To Conductor typeCable typeNumber of coresNumber of cablesCable size in (Sq.mm)Overall Dia. (mm)Size of ECC in (Sq.mm)Overall Dia. of ECC in (mm)Conductor Arrangement Required Width (mm)ALPVC/CUXLPE/CUCUODECC ODFLATTREFOILSpaceCopperAluminium1CopperPVC461.512.51.53.9Trefoil94012.5FALSE12.512.53.9109.2293.75Size1c PVC2c PVC2c XLPE3c PVC3c XLPE4c PVC4c XLPESize1C 2C3C3.5C4CXLPE/SWA/PVC2CopperXLPE232524.3168Spaced, flat1460FALSE24.324.324.38145.8091.125PVC12 Core6mm15.93AluminiumPVC3161769Spaced, flat341700017934.0021.25XLPE21.51.51.53.99.611.511.511.512.513.51.5712.512.5NA1510mm184AluminiumPVC3.512523.51611Spaced, flat4723.500023.51147.0029.37532.52.52.54.210.412.512.512.514.014.52.57.513.514NA16.516mm205AluminiumPVC116969Spaced, flat1890009918.0011.2544444.811.513.513.513.515.517.0481515.5NA1825mm24.3 00000ERROR:#N/AERROR:#VALUE!ERROR:#VALUE!56665.412.615.915.015.017.018.5691617NA19.535mm27.9 00000ERROR:#N/AERROR:#VALUE!ERROR:#VALUE!Aluminium61010106.814.41816.50.019.020.5101017.519NA204 Core6mm18.7 00000ERROR:#N/AERROR:#VALUE!ERROR:#VALUE!Copper71616168.017.520.617.521.821.523.616111821NA2210mm21.1 00000ERROR:#N/AERROR:#VALUE!ERROR:#VALUE!82516259.819.524.322.526.924.029.12512.5202223.52416mm22.9 00000ERROR:#N/AERROR:#VALUE!ERROR:#VALUE!Cable Trays (mm) 935163511.020.527.923.029.626.532.13513.521.525262725mm29.1 00000ERROR:#N/AERROR:#VALUE!ERROR:#VALUE!1050255013.024.025.327.028.432.531.3501524.527303135mm32.1 00000ERROR:#N/AERROR:#VALUE!ERROR:#VALUE!1170357015.027.028.132.032.033.536.87017283232.53550mm32 00000ERROR:#N/AERROR:#VALUE!ERROR:#VALUE!501295509517.028.531.933.036.738.540.69519333436.53870mm37.7 00000ERROR:#N/AERROR:#VALUE!ERROR:#VALUE!5075mm131207012019.033.035.136.040.041.545.812021353840.54295mm41.775100mm141507015021.034.038.241.045.145.049.915022.537424445.5120mm47.1TOTAL864133924.7666666667100150mm1859518523.537.043.346.049.350.554.91852540.5465051150mm51.4150225mm24012024028.042.548.350.054.558.061.02402845525557.5185mm56.6SELECT TRAY SIZE (mm)450AVAILABLE SPACE FOR FUTURE (%)25RESULTOK225300mm30015030030.045.552.655.559.564.066.5300305056.56166.5240mm63300450mm40018540034.051.558.063.565.872.075.44003456646871.5300mm68.8450600mm5003862.5727579.5Single Core 6491B (LSF)600750mm1110mm6.8750900mm22Trefoil16mm89002-600mm33Touching, flat25mm9.812002-750mm43.5Spaced, flat35mm1115002-900mm450mm1370mm15

MICC/PVC Heavy Duty2 core1.5mm (2H1.5)9.62.5mm (2H2.5)10.44mm (2H4)11.56mm (2H6)12.610mm (2H10)14.44 core2.5mm (4H2.5)11.84mm (4H4)13.16mm (4H6)14.410mm (4H10)16.516mm (4h16)19.625mm (4h25)22.9

VD

Project:Date:Revision:

VOLTAGE DROP Calculations

Cable Ref.Cable FromConnected To Single/ Three PhaseNumber of RunsNumber of CoresCable Size mm2 or Busduct RatingSelect "C" for Cable or "B" for BusductSelect (XLPE, PVC for Cable & CU / AL for Busduct)Operating Voltage (V)Length ( Mt)TCL in KWMD in KWMD in KVAPower FactorACB/ MCCB RatingVoltage Drop/A/M (mV)% Voltage Drop Allowed (%)Max. Voltage Drop allowed (V)Load Current AAct. Voltage Drop (v)Act. % Voltage Drop (%)Installation Type. G/A/DCable/ Busduct Derating FactorVoltage drop within limit?Cable or Busduct Current Rating (A)Load Current (A)MCCB Rating (A)Cable Derated Current (A)MCCB rating within load current?Cable size can be reduced?MD in KWMD in KVAPower FactorVoltage Drop/A/M (mV)Max. Voltage Drop allowed (V)Load Current A Single phaseLoad Current A Three phaseLoad Current A Act. Voltage Drop (v)Act. % Voltage Drop (%)Voltage drop within limit?Cable or Busduct Current Rating (A)MCCB rating within load current?Cable size can be reduced?Area of Condr.VD/A/MGroundAirDuctBus bar Ct. @ 35oCVD/A/M(mV)VD/M (SQARE D) Cu @ 0.8 P.FMCCBArea of Condr.1MP-PRT-001ACB-3Ph7135CXLPE400354045560.80401.1500.31.20810.470.12A0.80OK11348140907CHECKCHECK4556.2511.1501.2081810.470.12OK1134CHECKCHECK42.516.400342517.58000.1080.086101.511Ph2.50.7100.10.52MP-PRT-001ACB-3Ph7125CXLPE400354045560.801601.6500.31.20810.670.17A0.80OK91781160734OKCHECK4556.2511.6501.2081810.670.17OK917OKCHECK4220410.20047342310000.0940.094162.5B23Ph4XLPE0.75160.20.55 000 0.0000FALSE0.00CHECKERROR:#N/ACHECKERROR:#VALUE!Enter G or A or D in Installation Type23066.80057432912000.0690.083204C36PVC0.8200.30.6 000 0.0000FALSE0.00CHECKERROR:#N/ACHECKERROR:#VALUE!Enter G or A or D in Installation Type240104.00082603913500.0630.085326410CU0.85320.40.65 000 0.0000FALSE0.00CHECKERROR:#N/ACHECKERROR:#VALUE!Enter G or A or D in Installation Type380162.500115999416000.0530.0854010G516AL0.9400.50.7 000 0.0000FALSE0.00CHECKERROR:#N/ACHECKERROR:#VALUE!Enter G or A or D in Installation Type400251.65015013112520000.0460.0925010A6250.95500.60.75 000 0.0000FALSE0.00CHECKERROR:#N/ACHECKERROR:#VALUE!Enter G or A or D in Installation Type415351.15018016215025000.0330.0826316D735630.70.8 000 0.0000FALSE0.00CHECKERROR:#N/ACHECKERROR:#VALUE!Enter G or A or D in Installation Type440500.87021519717530000.0290.0878025850800.80.85 000 0.0000FALSE0.00CHECKERROR:#N/ACHECKERROR:#VALUE!Enter G or A or D in Installation Type500700.60026525121532000.0250.081100359701000.90.9 000 0.0000FALSE0.00CHECKERROR:#N/ACHECKERROR:#VALUE!Enter G or A or D in Installation Type525950.45031530426040000.0200.08112550109512510.95 000 0.0000FALSE0.00CHECKERROR:#N/ACHECKERROR:#VALUE!Enter G or A or D in Installation Type6601200.37036035330050000.0150.07516070111201601.1 000 0.0000FALSE0.00CHECKERROR:#N/ACHECKERROR:#VALUE!Enter G or A or D in Installation Type6901500.30040540633520095121502001.2 000 0.0000FALSE0.00CHECKERROR:#N/ACHECKERROR:#VALUE!Enter G or A or D in Installation Type1850.260460463380225120131852251.3 000 0.0000FALSE0.00CHECKERROR:#N/ACHECKERROR:#VALUE!Enter G or A or D in Installation Type2400.210530546440250150142402501.43000.185590628495300185153003001.5TOTAL LOAD8090112.5162.44000.165667728570350240164003501.61Max. Voltage Drop Allowed (V)5000.180770918620*400300175004001.7V = Operating Voltage * % of Voltage Drop Allowed6300.1708401027670*630400186306301.88000.1708881119692*800500198008001.92Load Current (A)10000.1609421214735*100063020100010002A = Total Watts / 1.732 * Operating Voltage * Power Factor16006302116002.1* Single Core Cables20006302220002.23Actual Voltage Drop (V)32006302325002.31 Run Cable (V) = Voltage Drop/A/M * Load Current * Cable Length / 1000Incomer Breaker Ratings40006302432002.42 Run Cable (V) = (Voltage Drop/A/M (Load Current / 2) Cable Length / 1000)1=< 7 kw40 A50006302540002.527.1 to 11kw63 A2650002.64Max. Voltage Drop Allowed at Starting (V)311. 1 to 14 kw80 A272.7V = Operating Voltage * & of Voltage Drop Allowed at Starting414.1 to 17.5 kw100 A282.8517.6 to 22 kw125 A292.95Actual Voltage Drop at Starting (V)622.1 to 28 kw160 A3031 Run Cable (V) = Max. Voltage Drop Allowed * Motor Starting Current * Cable Length / 1000728.1 to 35 kw200 A313.12 Run Cable (V) = (Max. Voltage Drop Allowed (Motor Starting Current / 2) Cable Length / 1000)3.23.36Dearated Current (A)3.4A = load Current / 0.92 * 0.95 * 0.985 *0.84 * 0.85000.1803.5IF(ISERROR(AVERAGE(A1:A4)),"No Numbers",AVERAGE(A1:A4))6300.263.68003.7Derating Factor Calculation for Cables10000.1603.8a) Cables directly buried in ground3.9Soil resitivity facor = 1.144Ground temparature factor = 0.864.1Depth of laying factor( for 0.6 mtr ) = 0.984.2Group factor for Multicore cables = 0.84( 3 ckts)/ 0.77(6 ckts)4.3Overall Derating factor =1.14* 0.86 * 0.98 * 0.84 = 0.81( 3 ckts)4.4Overall Derating factor =1.14* 0.86 * 0.98 * 0.77= 0.74( 3 ckts)4.54.6b) Cables in ducts 4.7Soil resitivity facor = 1.064.8Ground temparature factor = 0.864.9Depth of laying factor( for 0.6 mtr ) = 0.995Group 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)= 0.88Overall Derating factor = 0.91*0.88 = 0.8

Income

BD

Project:Date:Revision:AluminiumCopperBUS BAR Voltage Drop CalculationResistanceReactanceResistanceReactanceR (mohm/m)X1 (mohm/m)R (mohm/m)X1 (mohm/m)Outlet Ref. DescriptionOPERATING VOLTAGELENGTH ( m )POWER ( kW )LINE CURRENT ( A )Load Factor Cos :Sin :DiversityBUSBAR CONDUCTORBUSBAR RATINGRESISTANCE (mohm / m)REACTANCE (mohm / m)VOLTAGE DROP (Vd)VOLTAGE DROP %E25TH FLOOR4153.507086.560.900.440.80Copper12500.037890.037890.0270.01870.0265620.0064000.601000.365700.117511000.210610.1071124TH FLOOR4153.5055154.580.900.440.80Copper12500.037890.037890.0470.011550.0474320.0114290.652000.365700.117512000.201800.1053122023TH FLOOR4153.5060228.780.900.440.80Copper12500.037890.037890.0700.022290.0702000.0169160.703000.268500.082123000.175370.0999123022TH FLOOR4153.5075321.520.900.440.80Copper12500.037890.037890.0990.02Aluminium3220.0986590.0237730.754000.268500.082124000.157570.0933124021TH FLOOR4153.5075414.270.900.440.80Copper12500.037890.037890.1270.03Copper4140.1271180.0306310.806000.151700.075426000.096620.0854838020TH FLOOR4153.5070500.830.900.440.80Copper12500.037890.037890.1540.045010.1536800.0370310.858000.098400.020168000.069640.0254040019TH FLOOR4153.5075593.580.900.440.80Copper12500.037890.037890.1820.0415940.1821390.0438890.9010000.065630.0156810000.050750.0193841518TH FLOOR4153.5070680.140.900.440.80Copper12500.037890.037890.2090.051.56800.2087010.0502890.9512500.047330.0112612500.037890.0148444017TH FLOOR415104.0070766.710.900.440.80Copper12500.037890.037896.9911.6827676.9906841.68450217500.035750.0097617500.030240.01186500 2.500.000000ERROR:#DIV/0!20000.029870.0079720000.025150.00980525 300.000000ERROR:#DIV/0!25000.023040.0067525000.018950.00757660 3.500.000000ERROR:#DIV/0!30000.018860.0050232500.015120.00605690 400.000000ERROR:#DIV/0!40000.011920.0023245000.010080.00415 4.500.000000ERROR:#DIV/0!50000.007850.0012455000.008380.00343 5TOTAL 132.006207.911.90V = 3.L.I(R.Cos + X1.Sin ) 10 [V]

ALLOWED VOLTAGE DROP IN %3.5VOLTAGE DROP % E 1.90RESULTSelected bus bar is OK

Income

LG

Project:Date:Revision:

LIGHTING Calculation

Sr.No.AreaReq. LuxLumens Required Light No. of Light fittingsDescriptionLength (m)Width (m)Height (m)Area in (Sq.m)Light sourceWattsLumens pulm/wlm OPareaarea x luxM.FU.FCOFqtYLampsTypeBaseWattlm1542.8202007143LED lamp2022603.21137142.85714285712040000.80.70.563.1605562579IncandescentBulb shapedE2760730LampsTypeLuxLight sourceLm/W2542.8202007143High pressure sodium vapour lamp5058501.21177142.85714285712040000.80.70.561.2210012217596500.5003542.8202007143LED lamp2022603.21137142.85714285712040000.80.70.563.16055625791001380LEDIncandescent5Tungsten incandescent light bulb15205200.50.60.630.534542.8202007143LED lamp2022603.21137142.85714285712040000.80.70.563.16055625791502200IncandescentBulb shaped10Halogen lamp203010400.60.70.640.545542.8202007143LED lamp2022603.21137142.85714285712040000.80.70.563.16055625792003150FluorescentFluorescent15Fluorescent lamp604015600.70.80.650.556 0000000FluorescentCompact2G10181100InductionCompact20LED lamp1135020800.80.90.660.567 0000000241700DischargeLinear (T5)25Metal halide lamp8760251000.910.670.578 0000000362800Main voltageLinear (T5) FH30High pressure sodium vapour lamp117703012011.10.680.589 00000002G11181200HalogenLinear (T5) FQ35Low pressure sodium vapour lamp15080351401.11.20.690.5910 0000000241800Linear (T8)40Mercury vapour lamp5090401601.21.30.70.611 0000000362900Linear (T12)50100451801.31.40.710.6112 0000000403500Linear (T2)60110502001.41.50.720.6213 0000000554800Integrated ballast70120552201.51.60.730.6314 0000000806000"U" shaped80130602401.61.70.740.642D10650Circular90140652601.71.80.750.65TOTAL3571414161050Circular (T5)100150702801.81.90.760.66211350Induction125160753001.920.770.672820501501708032022.10.780.68383050Discharge175180853402.12.20.790.69G235250Linear (70W)200190903602.22.30.80.77400Linear (150W)225200953802.32.40.810.719600Linear2501004002.42.50.820.7211900Bulb shaped2751054202.52.60.830.73G24/GX2410600Main voltage3001104402.62.70.820.7213900Bulb shaped3251154602.72.80.810.71181200Linear3501204802.82.90.80.7261800Halogen3751255002.930.790.69322400Bulb shaped40013052033.10.780.68423200LED4251355403.13.20.770.675743004501405603.23.30.760.667052004751455803.33.40.750.65Linear (T5)G541405001506003.43.50.740.6462705251556203.53.60.730.6383855501606403.63.70.720.62138305751656603.73.80.710.61Linear (T5) FHG51413506001706803.83.90.70.62121006251757003.940.690.5928290065018072044.10.680.583536506751857404.14.20.670.57Linear (T5) FQG52420007001907604.24.30.660.563935007251957804.34.40.650.554949007502008004.44.50.640.545450007752058204.54.60.630.538070008002108404.64.70.620.52Linear (T8)G13106508252158604.74.80.610.51147508502208804.84.90.60.5159508752259004.950.590.4916125090023092055.10.580.483024009252359405.15.20.570.473633509502409605.25.30.560.463833009752459805.35.40.550.45585200100025010005.45.50.540.44Linear (T12)G13101000102510205.55.60.530.43201150105010405.65.70.520.42402800107510605.75.80.510.41654800110010805.85.90.50.4Linear (T2)W4,36330112511005.960.490.3985401150112066.10.480.3811750117511406.16.20.470.3713930120011606.26.30.460.36Integrated ballastGX53730122511806.36.40.450.35"U" shaped2G1318950125012006.46.50.440.34362700127512206.56.60.430.33584500130012406.66.70.420.32CircularG10q221350132512606.76.80.410.31322050135012806.86.90.40.3402900137513006.970.390.29Circular (T5)2GX132218001400132077.10.380.28403200142513407.17.20.370.27554200145013607.27.30.360.26Induction1008000147513807.37.40.350.2515012000150014007.47.50.340.24DischargeLinear (70W)RX7s726500152514207.57.60.330.23Linear (150W)14713500155014407.67.70.320.22LinearFc225024200157514607.77.80.310.2140036000160014807.87.90.30.2100090000162515007.980.290.1919502000001650152088.10.280.18Bulb shapedG8,5 (35W)393300167515408.18.20.270.17G8,5 (70W)726700170015608.28.30.260.16G12 (35W)393300172515808.38.40.250.15G12 (70W)7266600175016008.48.50.240.14G12 (150W)15014500177516208.58.60.230.13GX12-1 (50W)532300180016408.68.70.220.12GX12-1 (100W)974900182516608.78.80.210.11Main voltageBulb shapedG925260185016808.88.90.20.140490187517008.990.190.09608201900172099.10.180.08751100192517409.19.20.170.07LinearR7s60840195017609.29.30.160.061001600197517809.39.40.150.051502500200018009.49.50.140.04200320018209.59.60.130.03300500018409.69.70.120.02500950018609.79.80.110.01750165001880100022000190015003600019202000440001940Extra low voltage halogenBulb shapedGY6,352032019603590019805012602000751450901800G45601014020320

kA

Project:Date:Revision:

Calculate LT FEEDER FAULT CURRENT

Feeder Ref:Fault pointSupplyFeeder Voltage (A)Source Rating (KVA)Power Factor (P.F)Source Fault (A)Feeder Rating (A)Length (Mt)Wire Size (Sq.mm)No. of RunsInduction Motors FLA (A)Synchronous Motors FLA (A)Resistance X (/km)Reactance Z (/km)Fault Current (A)1SMP13Ph41515000.852171.7410020150110100.1476380.16732328377.0428377.0369848131Ph2312.510.17060.239501 F = V / sqrt(P) / ((L x R / 1000) ^ 2 + (L x X / 1000 + V / (A x sqrt(P))) ^ 2) ^ 0.5 + 4 x M + 5 x N23Ph41510000.8532735.212005015010.1476380.16732313821.1913821.19240564973Ph3246.561680.223097 ERROR:#VALUE!363.9370080.206693F= Available fault current at source (A) ERROR:#VALUE!220500.84102.5590550.213255V= Circuit voltage (use line voltage if three-phase and phase voltage if single-phase) (V) ERROR:#VALUE!2301000.815161.6076120.209974P= Number of phases (1 or 3) ERROR:#VALUE!2401600.826251.017060.19685L= Distance from source of feeder to point of interest (m.) ERROR:#VALUE!3802000.837350.6561680.187008R= Resistance of feeder per 1000 m. () ERROR:#VALUE!4002500.848500.5249340.187008X= Reactance of feeder per 1000 m. () ERROR:#VALUE!4153150.859700.3280840.177165A= Available fault current at the source of the feeder (A) ERROR:#VALUE!4404000.8610950.2591860.170604M= Total fault current contribution of induction motors (A) ERROR:#VALUE!5005000.87111200.2066930.167323N= Total fault current contribution of synchronous motors (A) ERROR:#VALUE!5256300.88121500.1476380.167323 ERROR:#VALUE!6607500.89131850.1279530.164042 ERROR:#VALUE!6908000.9142400.0951440.1574810000.91153000.0820210.1574812500.92164000.0688980.1574815000.93175000.0590550.15091916000.941820000.951925000.962032000.97210.980.99

CB

Project:Date:Revision:

Calculate kVAR rating, cable size and protection of CAPACITOR BANK

Sr.NoDescriptionMaximum Load (Kw)Existing P.F. (Lag) cos 1Desired P.F. (Lag) cos 2tan 1tan 2MD at existing P.F. (kVA)MD at improved P.F. (kVA)Saving in MD (kVA)Required kVAR Selected kVAR Breaker (A)Cable size (Sq.mm)tan1 tan2 PFCOS INVERSETANCapacitor Value and corresponding Breaker & Cable sizes9000.840.970.650.25107192814435635010003R.4C x 185kVARAmpsSqmm5000.750.900.880.486675561111992005002R. 4C x 150132.8598803814.069867750.4563.256316051.98450795000.750.960.880.296675211462952005002R. 4C x 1501071.430.6459361880.2506236240.4662.61289251.930258512501254C x 50 927.840.4761.965703461.878013648752004C x 95 143.590.395312564355.78130760.4861.314597991.8276426841002504C x 150 10003R.4C x 1850.4960.659418431.7790253741755002R. 4C x 150 241.4096221125.841932760.50601.7320508082005002R. 4C x 150 666.670.8819171030.4843220960.5159.336170261.6866164732256302R.4C x 185 555.560.5258.66774851.6426274232506302R.4C x 185 111.110.397595007198.79750350.5357.994545171.599995552758002R.4C x 240 5002R. 4C x 1500.5457.316361151.5586389193008002R.4C x 240 341.4096221116.260204710.5556.6329870301.518481193258002R.4C x 240 666.670.8819171030.2916666660.5655.9442022601.47945108435010003R.4C x 185 520.830.5755.2497742501.44148191637510003R.4C x 185145.830.590250437295.12521850.5854.549457361.40451116240010003R.4C x 185TOTAL19005002R. 4C x 1500.5953.84299181.36848007642512503R.4C x 3004000.6053.130102351.33333333345012503R.4C x 300KVAR CUM SAVING CALCULATOR FOR HT ELECTRICITY CONSUMERS0.00000.6152.410497031.2990187147512503R.4C x 300INPUT SECTIONOUTPUT SECTION0.000.6251.683865531.2654867950012503R.4C x 300Maximum load (KW)800 MD at existing P.F. (kVA)10671066.66666666670.00000.6350.949877461.232690687-00Existing Power Factor (Lag) cos 1 0.75 MD at improved P.F. (kVA)842842.1052631579000.6450.20818051.200585795000Desired Power Factor (Lag) cos 2 0.95 Saving in MD (kVA)225224.56140350885000.6549.458398131.16912955Operating Voltage1000 KVAr at existing P.F. (kVAr)706705.53368240.8819171030.00000.6648.700127211.13828121 KVAr at improved P.F. (kVAr)263262.9472840.3286841050.000.6747.93293521.108001639 KVAr required (kVAr)443442.58639840.5532329980.00000.6847.156356961.078253105 Load Current at existing P.F. (Amps)616615.85835257891.299000.6946.369891141.048999083 Load Current at improved P.F. (Amps)486486.20396256231.64546000.7045.5729961.020204061 Reduction in Load Current (Amps)130129.65439001660.00000.7144.765084670.9918333460.000.7243.945519560.9638528650.00000.7343.113605950.936228965000.7442.268584430.9089282017000.7541.409622110.8819171030.00000.7640.535802110.8551619370.000.7739.646111150.8286284230.00000.7838.73942460.802281428000.7937.814488510.776084618000.8036.869897650.750.00000.8135.904068580.7239875010.000.8234.915206250.6980042930.00000.8333.901261990.672004085000.8432.859880380.6459361889000.8531.788330610.6197443380.00000.8630.683417110.5933651540.000.8729.54136050.5667261160.00000.8828.357636570.539742822000.8927.126753120.51231519610000.9025.841932760.4843220960.00000.9124.494648470.455613460.000.9223.073918070.4259982160.00000.9321.265185020.389183871000.9419.9484435900.36295153411000.9518.1948723300.3286841050.00000.9616.2602047100.2916666660.000.9714.0698677500.2506236240.00000.9811.4783409500.20305866000.998.1096144560.1424933511200-000.00000000.000.00000013000.00000.000.00000014000.00000.000.000000TOTAL000.00000.000.000000

Income

ER

Project:Date:Revision:AluminiumCopperLT EARTHING CalculationResistanceReactanceResistanceReactance

Sr.No.Fault level on Source SSO (MVA)Equipment Lumped Induction motor SM (KVA)pu per MVAFault level at LT Side (MVA)Fault current IF (KA)Line to Earth UO (V)Impedance ZS ()Soil resistivity (-m)Duration of earth fault t (sec)Max. permissible current density (A/Sq.mm)Req. Earth Electrode area (Sq.mm)Earth electrodeReq. No. of Electrodes Ref:TypeReactance X T/DG (%)Capacity X T/DG (KVA)X SOX T/DGX MX Eq.TypeDia. (m)Length (m)Area Ea (Sq.m)1350Transformer57505560.00285714290.06666666670.44960.060216.61123.1092400.01041012393.849.6535GI Pipe0.100030.942114110.06022350Transformer57505560.00285714290.06666666670.44960.060216.61123.1092400.01041012393.849.6535GI Pipe0.100030.942114110.06024Transformer5052203350D.UPS57505560.00285714290.06666666670.44960.060216.61123.1092400.01041012393.849.6535GI Pipe0.100030.942114110.06024.1D.Generator10062304350Transformer57505560.00285714290.06666666670.44960.060216.61123.1092400.01041012393.849.6535GI Pipe0.100030.942114110.06024.2D.UPS16092405D.Generator101000200 0.11.250.11013.9122400.01731012393.845.8116GI Pipe0.100030.9427370.14.320011 ERROR:#VALUE!ERROR:#VALUE! 4.450025013 ERROR:#VALUE!ERROR:#VALUE! 4.563031515 ERROR:#VALUE!ERROR:#VALUE! 4.675040019 ERROR:#VALUE!ERROR:#VALUE! 4.780050020 ERROR:#VALUE!ERROR:#VALUE! 4.8100063025 ERROR:#VALUE!ERROR:#VALUE! 4.9125075031 ERROR:#VALUE!ERROR:#VALUE! 5150080038 ERROR:#VALUE!ERROR:#VALUE! 5.11600100044 ERROR:#VALUE!ERROR:#VALUE! 5.220001250505.32500150056515.432001600635.52000695.6GI Pipe2500755.7CI Pipe3200805.8Cu. Rod885.99460.050.01271006.10.10.01421066.20.0161136.310.01721256.41.10.0181386.51.20.021446.61.30.0221506.71.40.0251566.81.51636.91.617571.71887.11.81947.21.92067.322137.42.12197.52.22257.62.32387.72.42507.82.52757.92.628882.73008.12.83138.22.93258.333448.43638.53758.64388.75008.85638.962596889.17509.28139.38759.49389.510009.611259.715639.818759.9218810250028123130375043755000

DG

Project:Date:Revision:

Calculate size, effeciency and fuel consumption of Diesel GENERATOR0.10.71Ph3PhLinearNon-LinearMotorLinerNon-LinearMotorTotal Starting KvaLinerNon-LinearMotorTotal Running KvaFuel Consumption Chart3.7878787879Sr.NoEquipmentLoad TypeSupplyVoltage (P-P)Voltage (P-N)QtyLoadStarting P.FRunning P.FDiversity FactorMotor StarterStarting ConditionRunning ConditionStarting ConditionRunning Condition0.20.8KwFull Load KvaStarting KvaFull Load AmpFull Load AmpStarting AmpStarting AmpStarting AmpStarting AmpStarting AmpStarting AmpFull Load AmpStarting AmpStarting KvaStarting KvaStarting KvaRunning KvaRunning KvaRunning Kva 0.25 Load(Lt/Hr)0.50Load(Lt/Hr)0.75 Load(Lt/Hr)Full LoadKVAKWLoadKw/HpStarting AmpStarting KvaStarting KwFull Load KvaFull Load Kw Full Load AmpStarting AmpStarting KvaStarting KwFull Load KvaFull Load Kw Full Load Amp0.30.9 20 0.6 0.9 1.3 1.6 252.273.414.926.06Full Load6.38Non-Linear3Ph400230150Kw0.90.91128898089808012889808980800.41.05056560800001280080128089089089089LinearDol1Ph 30 1.3 1.8 2.4 2.9 384.926.829.0910.983/4 Load9.412Linear3Ph400230150Kw0.90.918056505650803802208056505650800.550565608008000008080560056560056Non-LinearY-D3Ph 40 1.6 2.3 3.2 4.0 506.068.7112.1215.151/2 Load12.516Motor3Ph400230150Kw0.90.81Y-D2712222006350904002302712222006350900.6506356090000002719027100222222006363MotorAuto.Tra. 60 1.8 2.9 3.8 4.8 756.8210.9814.3918.181/4 Load18.723 4152400000000.7000000000000000000000KwSoft. 75 2.4 3.4 4.6 6.1 949.0912.8817.4223.112531 4400000000.8000000000000000000000HpFreq.Conv 100 2.6 4.1 5.8 7.4 1259.8515.5321.9728.0331.339 0000000.9000000000000000000000 125 3.1 5.0 7.1 9.1 15611.7418.9426.8934.4737.547 0000001000000000000000000000 135 3.3 5.4 7.6 9.8 16912.5020.4528.7937.125063 0000001.1000000000000000000000 150 3.6 5.9 8.4 10.9 18813.6422.3531.8241.2962.578 0000001.2000000000000000000000 175 4.1 6.8 9.7 12.7 21915.5325.7636.7448.117594 0000001.3000000000000000000000 200 4.7 7.7 11.0 14.4 25017.8029.1741.6754.5593.8117 0000001.4000000000000000000000 230 5.3 8.8 12.5 16.6 28820.0833.3347.3562.88100125 0000001.5000000000000000000000 250 5.7 9.5 13.6 18.0 31321.5935.9851.5268.18125156 0000001.6000000000000000000000 300 6.8 11.3 16.1 21.5 37525.7642.8060.9881.44156195 000000000000000000000000000 350 7.9 13.1 18.7 25.1 43829.9249.6270.8395.08187234661.3787878788 400 8.9 14.9 21.3 28.6 50033.7156.4480.68108.33219274FUTURE LOAD EXPANSION20%AVERAGE INTERMITTENT USE OF EQUIP.0.9TOTAL4793673302071802511.2150 500 11.0 18.5 26.4 35.7 62541.6770.08100.00135.232503130.90.0001.5 600 13.2 22.0 31.5 42.8 75050.0083.33119.32162.12342428ALTERNATOR DETAILSVoltage (P-N)230Efficiency90%Engine Overload Capacity (~ 130% To 150%)150%Engine KW243REQUIRED GENERATOR RATING39699 750 16.3 27.4 39.3 53.4 93861.74103.79148.86202.27375469 1000 21.6 36.4 52.1 71.1 125081.82137.88197.35269.32438548Calculate D.G Set Efficiency & Unit Rate of PowerCalculate Approximate Fuel Consumption 1250 26.9 45.3 65.0 88.8 1563101.89171.59246.21336.36500625D.G Size ( Kva )1000D.G Size (Kva)100 1500 32.2 54.3 77.8 106.5 1875121.97205.68294.70403.41625781D.G P.F1D.G P.F0.8 1750 37.5 63.2 90.7 124.2 2188142.05239.39343.56470.45350438D.G Running Hours20D.G OperationFull Load 2000 42.8 72.2 103.5 141.9 2500162.12273.48392.05537.508751094Diesel Consumption (Liter)1000REQUIRED DIESEL 2250 48.1 81.1 116.4 159.6 2813182.20307.20440.91604.5510001250KWH Reading of Meter10000Liter/Hour23.1111251406M.F of KWH Meter112501563Diesel Rate /Liter (Local currency)4015631954EFFICIENCY OF D.G50%23.11518752344KWH/Liter (Unit Per Liter)1024883110UNIT RATE OF POWER (LOCAL CURRENCY)4.0250031252812351531303913375046884375546950006250

1.2533333333

LP

Project: Date: Revision:

Calculate risk assesment and protection level of LIGHTNING PROTECTION SYSTEM

Dimensions of StructureMaximum Length (m)10(L = 30m) Maximum Width (m)10(L = 45m) Maximum Height (m)10(L = 60m) Distance between Lightning rod & farthest point to protect (m)100-0.28NARolling sphere methodProtection levelProtection effeciencyMaximum impulse currentC1 - Environment CoefficientSurrounded by structures or trees of the same height or higher0.25-0.27NAProtection angle methodLevel I + ADD>200Surrounded by smaller structures0.5Surrounded by smaller structures0.5-0.26NAMesh methodLevel I0.98200C2 - Structural CoefficientNo other structures within a distance equal to the height1-0.25NALevel II0.95150Structure / Roof - Metallic / Metallic0.5Isolated on top of a hill2-0.24NALevel III0.9100C3 - Structural Coefficient-0.23NALevel IV0.8100Non flammable0.5Structure / Roof - Metallic / Metallic0.5-0.22NANANc...Protection Required0.12Level IVE=1-(Nc/Nd)0.13Level IVE > 0.980.14Level IV0.95