GENERATOR DATA JANUARY 30, 2015 For Help Desk Phone Numbers Click here Generator Specification Frame: 1822 Type: SR5 No. of Bearings: 2 Winding Type: FORM WOUND Flywheel: 21.0 Connection: SERIES STAR Housing: 00 Phases: 3 No. of Leads: 6 Spec Information Poles: 4 Wires per Lead: 1 Sync Speed: 1800 Generator Pitch: 0.6667 Generator Efficiency Per Unit Load kw Efficiency % 0.25 562.5 92.6 0.5 1125.0 95.2 0.75 1687.5 95.9 1.0 2250.0 95.9 Reactances Per Unit Ohms SUBTRANSIENT - DIRECT AXIS X'' d 0.1423 0.8753 SUBTRANSIENT - QUADRATURE AXIS X'' q 0.1335 0.8213 TRANSIENT - SATURATED X' d 0.2153 1.3248 SYNCHRONOUS - DIRECT AXIS X d 3.4000 20.9204 SYNCHRONOUS - QUADRATURE AXIS X q 1.5046 9.2580 NEGATIVE SEQUENCE X 2 0.1378 0.8480 ZERO SEQUENCE X 0 0.0112 0.0691 Time Constants Seconds OPEN CIRCUIT TRANSIENT - DIRECT AXIS T' d0 5.0860 SHORT CIRCUIT TRANSIENT - DIRECT AXIS T' d 0.3221 OPEN CIRCUIT SUBSTRANSIENT - DIRECT AXIS T'' d0 0.0075 SHORT CIRCUIT SUBSTRANSIENT - DIRECT AXIS T'' d 0.0065 OPEN CIRCUIT SUBSTRANSIENT - QUADRATURE AXIS T'' q0 0.0066 SHORT CIRCUIT SUBSTRANSIENT - QUADRATURE AXIS T'' q 0.0057 EXCITER TIME CONSTANT T e 0.2580 ARMATURE SHORT CIRCUIT T a 0.0454 Short Circuit Ratio: 0.38 Stator Resistance = 0.0787 Ohms Resistance = 0.8963 Ohms Voltage Regulation Voltage level adustment: +/- 5.0% Voltage regulation, steady state: +/- 0.5% Voltage regulation with 3% speed change: +/- 0.5% Waveform deviation line - line, no load: less than 3.0% Telephone influence factor: less than 50 Generator Excitation No Load Full Load, (rated) pf Series Parallel Excitation voltage: 9.82 Volts 52.56 Volts Volts Excitation current 0.9 Amps 3.98 Amps Amps
Generator Mechanical Information Center of Gravity Dimension X -1071.9 mm -42.2 IN. Dimension Y 0.0 mm 0.0 IN. Dimension Z 0.0 mm 0.0 IN. "X" is measured from driven end of generator and parallel to rotor. Towards engine fan is positive. See General Information for details "Y" is measured vertically from rotor center line. Up is positive. "Z" is measured to left and right of rotor center line. To the right is positive. Generator WT = 4905 kg * Rotor WT = 1778 kg * Stator WT = 2411 kg 10,814 LB 3,920 LB 5,315 LB Rotor Balance = 0.0508 mm deflection PTP Overspeed Capacity = 125% of synchronous speed Generator Torsional Data J1 = Coupling and Fan K1 = Shaft Stiffness between J1 + J2 (Diameter 1) J2 = Rotor TOTAL J = J1 + J2 + J3 K2 = Shaft Stiffness between J2 + J3 (Diameter 2) J3 = Exciter End J1 K1 Min Shaft Dia 1 J2 K2 Min Shaft Dia 2 J3 30.1 LB IN. s 2 62.0 MLB IN./rad 5.0 IN. 547.2 LB IN. s 2 57.3 MLB IN./rad 3.8 IN. 3.8 LB IN. s 2 3.397 N m s 2 7.0 MN m/rad 127.0 mm 61.82 N m s 2 6.47 MN m/rad 96.5 mm 0.43 N m s 2 Total J 581.0 LB IN. s 2 65.647 N m s 2
Generator Cooling Requirements - Temperature - Insulation Data Cooling Requirements: Temperature Data: (Ambient 40 0 C) Heat Dissipated: 96.2 kw Stator Rise: 125.0 0 C Air Flow: 199.2 m 3 /min Rotor Rise: 125.0 0 C Insulation Class: H Insulation Reg. as shipped: 100.0 MΩ minimum at 40 0 C Thermal Limits of Generator Frequency: 60 Hz Line to Line Voltage: 4160 Volts B BR 80/40 F BR -105/40 H BR - 125/40 F PR - 130/40 H PR - 150/40 2250.0 kva 2563.0 kva 2813.0 kva 2813.0 kva 3125.0 kva SKVA Percent Volt Dip 349 2.5 716 5.0 1,104 7.5 1,512 10.0 1,944 12.5 2,402 15.0 2,887 17.5 3,403 20.0 3,952 22.5 4,537 25.0 5,163 27.5 5,833 30.0 6,553 32.5 7,329 35.0 8,167 37.5 9,074 40.0 Starting Capability & Decrement Motor Starting Capability (0.4 pf)
Decrement Data E Time Cycle AMP 0.0 2,720 1.0 1,801 2.0 1,655 3.0 1,574 4.0 1,502 5.0 1,434 7.5 1,278 10.0 1,141 12.5 1,021 15.0 915 20.0 754 25.0 804 30.0 885 35.0 960 40.0 1,026 45.0 1,084 Instantaneous 3 Phase Fault : 2720 Amps Instantaneous Line - Neutral Fault : 3985 Amps Instantaneous Line - Line Fault : 2393 Amps Generator Output Characteristic Curves Open Circuit Curve Line - Line Volt 0.0 0 12.7 2,496 15.0 2,912 17.6 3,328 21.1 3,744 26.5 4,160 36.6 4,576 58.3 4,992 108.1 5,408 226.1 5,824
Short Circuit Curve Armature 0.0 0 41.0 234 47.8 273 54.6 312 61.4 351 68.3 390 75.1 429 81.9 468 88.7 507 95.6 546 Generator Output Characteristic Curves Zero Power Factor Curve Line - Line Volt 68.3 0 83.7 2,080 86.7 2,496 90.9 2,912 97.9 3,328 111.9 3,744 143.1 4,160 216.0 4,576 390.5 4,992 812.0 5,408
Air Gap Curve Line - Line Volt 0.0 0 12.5 2,496 14.6 2,912 16.7 3,328 18.8 3,744 20.9 4,160 23.0 4,576 25.0 4,992 27.1 5,408 29.2 5,824 Reactive Capability Curve Click to view Chart Caterpillar Confidential: Green Content Owner: Commercial Processes Division Web Master(s): PSG Web Based Systems Support Date: 8:22:08 AM Caterpillar Inc. 2015 All Rights Reserved. Data Privacy Statement. General Information DM7825 Caterpillar SR5 Generators (50 Hz, 60 Hz) Data for 1400, 1600, 1700, 1800 and 1900 frames Caterpillar SR5 generators built by Leroy Somer - USA and Leroy Somer France. Refer to DM7821 for explanation of all generator data in Technical Marketing Information (TMI) except generator efficiency for which the explanation is given below. GENERATOR EFFICIENCY Generator efficiency is the percentage of engine flywheel (or other prime mover) power that is converted into electrical output. The generator efficiency shown is calculated by the summation of all losses method, and is determined in accordance with the IEC Standard 60034. The efficiency considers only the generator. There is no consideration of engine or parasitic losses here.