Multiquip MQP40IZ, MQP20IZ, MQP45GM, MQP60IV, MQP50IZ, MQP30GM Three Phase Nema Motor Code Table, 201

Page 25

GENSET SIZING — DETERMINING LOAD CHARACTERISTICS

Three Phase NEMA Motor Code Table

Table 7 lists the 3Ø motor starting kVA, starting power factor, and motor factors. Do not confuse the NEMA (National Electrical Manufacturers Association) motor Code and design letters. The code letter refers to the ratio of locked rotor kVA to HP, whereas the design letter refers to the ratio of torque to speed.

Table 7. Three Phase Motor SkVA, SPF, EFF, and RPF

HP

 

 

 

NEMA Motor Code Letters

 

 

 

 

Motor Factors

A

B

C

D

E

F

G

H

J

K

L

N

SPF

EFF

RPF

 

1/4

0.5

0.8

0.9

1.0

1.2

1.3

1.5

1.7

1.9

2.1

2.4

2.9

0.82

62.8

0.55

1/2

1.0

1.7

1.9

2.1

2.4

2.6

3.0

3.3

3.8

4.2

4.7

5.9

0.82

62.8

0.55

3/4

1.5

2.5

2.8

3.2

3.6

4.0

4.5

5.0

5.7

6.4

7.1

8.9

0.78

69.3

0.64

1

2

3

4

4

5

5

6

7

8

8

9

12

0.76

73.0

0.70

1-1/2

3

5

6

6

7

8

9

10

11

13

14

18

0.72

76.9

0.76

2

4

7

8

8

9

11

12

13

15

17

19

24

0.70

79.1

0.79

3

6

10

11

13

14

16

18

20

23

25

28

35

0.66

82.5

0.82

5

10

15

19

21

24

26

30

33

38

42

47

59

0.61

83.8

0.85

7-1/2

15

25

28

32

36

40

45

50

57

64

71

89

0.56

85.1

0.87

10

20

33

38

42

47

53

59

67

75

85

95

118

0.53

85.9

0.87

15

30

50

57

64

71

79

89

100

113

127

142

177

0.49

86.9

0.88

20

40

67

75

85

95

106

119

134

151

170

190

236

0.46

87.6

0.89

25

50

84

94

106

119

132

149

167

189

212

237

295

0.44

88.0

0.89

30

60

100

113

127

142

159

178

201

226

255

285

354

0.42

88.4

0.89

40

80

134

151

170

190

212

238

268

302

340

380

475

0.39

88.9

0.90

50

100

167

189

212

237

265

297

335

377

425

475

590

0.36

89.6

0.90

60

120

201

226

255

285

318

357

402

453

510

570

708

0.36

89.6

0.90

75

150

251

283

318

356

397

446

502

566

637

712

885

0.34

90.0

0.90

100

200

335

377

425

475

530

595

670

755

849

949

1180

0.31

90.5

0.91

125

250

418

471

531

593

662

743

837

943

1062

1187

1475

0.29

90.9

0.91

150

300

502

566

637

712

794

892

1004

1132

1274

1424

1770

0.28

91.2

0.91

200

400

669

754

849

949

1059

1189

1339

1509

1699

1899

2360

0.25

91.7

0.91

250

500

836

943

1061

1186

1324

1486

1674

1886

2124

2374

2950

0.24

92.0

0.91

300

600

1004

1131

1274

1424

1589

1784

2009

2264

2549

2849

3540

0.22

92.3

0.92

350

700

1171

1320

1486

1661

1853

2081

2343

2641

2973

3323

4130

0.19

93.1

0.92

400

800

1338

1508

1698

1898

2118

2378

2678

3018

3398

3798

4720

0.19

93.1

0.92

500

1000

1673

1885

2123

2373

2648

2973

3348

3773

4248

4748

5900

0.17

93.8

0.92

INDUSTRIAL GENERATOR SETS — APPLICATION & INSTALLATION MANUAL — REV. #4 (09/07/07) — PAGE 25

Image 25
Contents Application & Installation Manual MQ PowerPage Heres HOW to GET Help Table of Contents Page Foryour Safety and the Safety of Others Safety Message Alert SymbolsAccidental Starting Safety Message Alert SymbolsGeneral Safety Important Safety InstructionsGeneral Safety Radiator Important Safety InstructionsMaintenance Safety Operation SafetyEmergencies Always know the location of the nearest fire extinguisherBattery Safety Genset should be inspected regularly for fire hazards Fire ProtectionAlways drain fuel prior to lifting Lifting the Generator SetIntroduction Always remember Safety FIRST!!! Safety involves twoIntroduction About This ManualInstallation Application and InstallationOverview ApplicationCold Climates and Derating Factors Installation OverviewLocation Outdoor LocationsGenset Sizing Procedure „ Static Uninterrupted Power Supplies UPSGenset Sizing Generator Set Sizing CalculationsStep Sequence Guidelines 765.7 Repeat steps a and b as necessary through all the worksheets Establish the minimum size required Generator Set Sizing Calculations Select a Generator SetRunning load should not be Determining Load Characteristics Lighting Genset Sizing Determining Load CharacteristicsSingle-Phase Induction Motor Three-Phase Induction Motors Genset Sizing Determining Load CharacteristicsCalculate SkVA as follows Calculate SkW as follows Determining Load CharacteristicsFull SkVA 100201 Three Phase Nema Motor Code TableVariable Frequency Drives Synchronous MotorsStatic UPS Equation above Output kVA is the nameplate kVA capacityRadiator discharge air high frequency sound Noise ConsiderationNoise Laws and Regulations Noise Zones Peak DayEnvironmental Considerations dBA Comparison Chart dBABelow estimates the noise level from multiple noise sources Adding Additional Sound SourcesDistance Effects on dBA Effects of DistanceFollowing will help reduce structure-borne noise Reducing NoiseSee on page 32 for typical measures in reducing noise Following will help reduce airborne noiseReducing Noise Acoustic MaterialMounting Access to SetMounting on a Slab Floor Mounting on a Sub-Base Fuel TankMounting Foundation Mounting FoundationGeneral Information Mountingthe Generator SETVibration Isolators Mounting Vibration Isolators Installation and Adjustment ProcedureFuel System Installation Mechanical Installation Fuel System DieselDiesel Fuel Supply TankMechanical Installation Fuel System Diesel Minimum Fuel Supply / Return Hose and Pipe Sizes Diesel Fuel SupplyMechanical Installation Fuel System Gaseous Fuels Contaminants Mechanical Installation Fuel System Gaseous FuelsGaseous Fuel Supply Natural GAS Schedule 40 Iron Pipe Sizing Pipe and Tube SizingTypical Pipe Schematic for Propane Vapor Distribution Liquid Propane Schedule 40 Iron Pipe Sizing Mechanical Installation Fuel SystemEnvironmental Protection Fuel Storage RegulationsAdditional references include Exhaust System Installation Mechanical Installation Exhaust SystemField Installing a Generator Exhaust System Mechanical Installation Exhaust System Condensation Trap Factory Recommended Engine Exhaust Silencers Exhaust System Installation Reference DataPurpose of the Battery Mechanical Installation Battery SystemMQ Power Batteries How BatteriesWork„ See the Battery Safety Instructions on Mechanical Installation Battery SystemEngine Starting System New Battery Installation Mechanical Installation NEW BatteryPreparation of Charged and Wet Batteries Preparation of Dry Charged Charged and Moist BatteriesRemoving Old Battery Mechanical Installation NEW BatteryDry Charged Batteries Charged and Moist Batteries ActivationBatteryTesting Battery System -TESTING BatteryStep One 1 -Visual Inspection See Flow Chart, on next Step Three 3 Load ProcedureBattery Testing Chart Battery System Batterytesting ChartBattery Storage Battery System Charging BatteryCharging LowWater-loss Batteries Battery System Battery Charger FC & FCA Battery Charger Battery System Battery ChargerLC1224-500-2 Battery Charger FC1224-10-2011U Battery ChargerBattery Charger Installation Battery System Battery Charger SafetyBattery Charger Safety Engine Cooling Mechanical Installation -VENTILATION and CoolingVentilation and Cooling Vents and DuctsLouvers Mechanical Installation -VENTILATION and CoolingFactory Mounted RadiatorVentilation Mechanical Installation Mounted Radiator CoolingMounted Radiator Cooling System Mechanical Installation Mounted Radiator CoolingRadiator Set Requirements Remote Radiator Cooling optional Mechanical Installation Remote Radiator CoolingRemote Radiator Cooling Mechanical Installation Remote Radiator CoolingHot Well Installation Mechanical Installation Hotwell CoolingHeat Exchanger Mechanical Installation Heat Exchanger Cooling19,200/60x8 = 40 gpm CoolantTreatment Coolant TreatmentCoolant Heaters Electrical Installation DC Controlwiring Control Box DC Control Wiring Control BOX Back PanelControl box contains the following „ Digital Control Module „ Control Box Back Panel ComponentsL3 3 PH DC Controlwiring Control BOX Back PanelGenerator Set Wire Diagram AC Electrical Connections Transfer SwitchConnection Of Generator Leads For Correct Voltage Output AC Electrical ConnectionsMounted fuel tank is used, the electrical stub-up Electrical TerminationsBreaker Line circuit breakerAC Electrical Connections System Grounding Pole ATS AC Electrical Connections System GroundingEquipment Grounding AC Electrical Connections Equipment GroundingElectrical Distribution System Electrical Distribution SystemPRE-START Preparation Run the Generator Set PRE-START PreparationAppendix Installation Checklist Appendix MAIN-LINE Circuit Breaker For MQ Power Industrial GeneratorsAppendix MAIN-LINE Circuit Breaker MQ Power Industrial Generator Specifications Appendix Generator SpecificationsAppendix Generator Specifications MQ Power Industrial Generator Specifications Appendix Engine Specifications MQP175IV MQP200IV MQP250IV Appendix Engine SpecificationsGenerator Model MQP300IV MQP350IV MQP400IV Generator Model MQP30GM MQP45GM MQP60GM MQP80GM MQP100GM Appendix Engine SpecificationsMQ Power Generator Dimensions & Weights Appendix Dimensions and WeightsMQ Power Generator Dimensions & Weights Appendix Dimensions AndweightsHeres HOW to GET Help