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MARATHON ELECTRIC
GENERATORS
TYPICAL SUBMITTAL DATA
MODEL : 433RSL4021
Winding H-SG430039
BASE MODEL: 433RSL4021
Submittal Data: 480 Volts*, 404.8 kW, 506 kVA, 0.8 P.F., 1800 RPM, 60 Hz, 3 Phase
Kilowatt ratings at
1800 RPM
60 Hertz
kW (kVA)
3 Phase
0.8 Power Factor
Class F
Class B
105º C 
British
Standard
Voltage*
330 (413)
350 (438)
365 (456)
380 (475)
480/240
325 (406)
345 (431)
355 (444)
370 (463)
460/230
315 (394)
335 (419)
345 (431)
360 (450)
440/220
315 (394)
320 (400)
330 (413)
355 (444)
416/208
280 (350)
295 (369)
315 (394)
315 (394)
380/190
Rise by resistance method, Mil-Std-705, Method 680.1b.
80º C 
Continuous
90º C 
Lloyds
95º C 
ABS
12 LEADS
105º C 
Continuous
380 (475)
370 (463)
360 (450)
355 (444)
315 (394)
5/3/2013
Standard 3 phase
Dripproof or Open Enclosure
Class H
125º C 
125º C 
British
Continuous
Standard
405 (506)
400 (500)
405 (506)
400 (500)
395 (494)
395 (494)
390 (488)
380 (475)
380 (475)
380 (475)
365 (456)
375 (469)
315 (394)
315 (394)
315 (394)
 British Standard Rating per BS 5000
130º C 
Standby
150º C 
Standby
440 (550)
425 (531)
410 (513)
400 (500)
315 (394)
Submittal Data: 480 Volts*, 404.8 kW, 506 kVA, 0.8 P.F., 1800 RPM, 60 Hz, 3 Phase
STD. CONNECTION
Mil-Std-705B
Mil-Std-705B
Method
Description
Value
Method
Description
Value
301.1b Insulation Resistance
>1.5 Meg
505.3b
Overspeed
2250 RPM
302.1a High Potential Test
507.1c
Phase Sequence CCW
CCW-ODE
ODE
ABC
Main Stator
2000 Volts
508.1c
Voltage Balance, L-L or L-N
0.20%
Main Rotor
1500 Volts
601.4a
L-L Harmonic Maximum - Total
5.0%
Exciter Stator
1500 Volts
(Distortion Factor)
Exciter Rotor
1500 Volts
601.4a
L-L Harmonic Maximum - Single
3.0%
PMG Stator
1500 Volts
601.1c
Deviation Factor
5.0%
401.1a Stator Resistance, Line to Line
--TIF (1960 Weightings)
< 50
High Wye Connection
0.0137 Ohms
--THF (IEC, BS & NEMA Weightings)
<2%
Rotor Resistance
0.297 Ohms
652.1a
Shaft Current
< 0.1 ma
E it St
t
22 5 Oh
Exciter
Stator
22.5
Ohms
Main Stator Capacitance to ground
Exciter Rotor
0.022 Ohms
--0.021 mfd
PMG Stator
2.1 Ohms
410.1a No Load Exciter Field Amps
0.61 A DC
at 240/480 Volts Line to Line
Additional Prototype Mil-Std Methods
420.1a Short Circuit Ratio
0.533
are Available on Request.
421.1a Xd Synchronous Reactance
2.553 pu
-Generator Frame
433
MAGNAMAXDVR
1.162 ohms
-Type
422.1a X2 Negative
g
Sequence
q
React.
0.218 p
pu
-Insulation
Class H
0.099 ohms
-Coupling - Single Bearing
Flexible
423.1a X0 Zero Sequence Reactance
0.039 pu
-Amortisseur Windings
Full
Ext. Voltage Regulated, Brushless
0.018 ohms
-Excitation
425.1a X'd Transient Reactance
0.13 pu
-Voltage Regulator
DVR2000E+
0.059 ohms
-Voltage Regulation
0.25%
426.1a X''d Subtransient Reactance
0.108 pu
0.049 ohms
-Xq Quadrature Synchronous
1.14 pu
-Cooling Air Volume
1050 CFM
0 519 ohms
0.519
427.1a T'd Transient Short Circuit
-Heat rejection rate
1392 Btu's/min
Time Constant
0.074 sec.
428.1a T''d Subtransient Short Circuit
-Full load current
609 amps
Time Constant
0.006 sec.
430.1a T'do Transient Open Circuit
-Minimum Input hp required
575.4
Time Constant
1.55 sec.
Efficiency at rated load :
94.3%
432.1a Ta Short Circuit Time
Constant of Armature Winding
0.019 sec.
-Full load torque
1678 Lb-ft
* Voltages refer to wye (star) connection, unless otherwise specified.
www.marathonelectric.com
MARATHON ELECTRIC
GENERATORS
TYPICAL DYNAMIC CHARACTERISTICS
MODEL : 433RSL4021
BASE MODEL: 433RSL4021
1
0
0
100
200
300
400
500
Recov
very time /
sec.
Recov
very time /
sec.
Winding H-SG430039
Submittal Data: 480 Volts*, 404.8 kW, 506 kVA, 0.8 P.F., 1800 RPM, 60 Hz, 3 Phase
1
0
0
100
300
400
500
400
500
Load rejection
Load application
30%
% Volta
age Rise
30%
% Voltag
ge Dip
200
20%
10%
0%
0
100
200
300
400
500
kW
20%
10%
0%
kW
0
100
200
300
Efficiency at rated voltage and frequency vs. load kW
.8 pf
1.0 pf
9
0%
97.0%
96.0%
95.0%
94.0%
93.0%
92.0%
91.0%
90.0%
0
50
100
Percent dip
150
200
250
kW Output
300
350
400
450
500
Voltage dip with motor starting
40%
35%
30%
25%
0%
20%
15%
10%
5%
0%
0
500
1000
1500
2000
2500
Locked rotor kVA
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