KVA BASE RATING : 50

FRAME : UC22D

CONTROL SYSTEM

SEPARATELY EXCITED (PMG)

SELF EXCITED ( NO PMG )

AVR

MX341

MX321

SX460

SX440

SX421

VOLTAGE REGULATION

1.00%

0.50%

1.50%

1.00%

0.50

WITH 4% ENGINE GOVERNING SX440 IS STANDARD AVR

INSULATION SYSTEM

CLASS H

PROTECTION

IP23 STANDARD

RATED POWER FACTOR

0.8 LAG

STATOR WINDING

DOUBLE LAYER LAP

WINDING PITCH

TWO THIRD

WINDING LEADS

12

OVERLOAD

10% OVERLOAD FOR 1 HOUR ONCE EVERY 12 HOURS

WAVE FORM DISTORTION

NO LOAD <1.8%, NON DISTORTING BALANCED LINEAR LOAD < 5%

MAXIMUM OVERSPEED

2250 REV / MIN

BEARING DRIVE END

BALL 6312-2RS ( ISO )

BEARING NON-DRIVE END

BALL 6309-2RS ( ISO )

VOLTAGE SERIES STAR (Y)

415 / 240

FREQUENCY HZ

50

1BRG

2BRG

WEIGHT COMP. GENERATOR

287

291

WEIGHT WOUND STATOR

86

86

WEIGHT WOUND ROTOR

89.68

78.38

WR2 INERTIA KGM2

0.4742

0.4303

% EFFICIENCY @ 0.8 PF AND 100% LOAD

88.5

STATOR WINDING RESISTANCE (L-L) @ 22 DEG C

0.258 OHMS

ROTOR WINDING RESISTANCE AT 22 DEG C

0.64 OHMS

X_d DIR AXIS SYNCHRONOUS

1.95

X’_d DIR AXIS TRANSIENT

0.150

X"_d DIR AXIS SUBTRANSIENT

0.100

Xq QUAD AXIS REACTANCE

0.900

X"_q QUAD AXIS SUBTRANSIENT

0.120

X_L LINKAGE REACTANCE

0.060

X₂ NEGATIVE SEQUENCE

0.110

X₀ ZERO SEQUENCE

0.070

REACTANCES ARE SATURATED

VALUES ARE PER UNIT AT RATINGS AND VOLTAGE INDICATED

T’_d TRANSIENT TIME CONSTANT

0.027

T"_d SUBTRANSIENT TIME CONSTANT

0.006

T’ do O.C. FIELD TIME CONSTANT

0.7

Ta ARMATURE TIME CONSTANT

0.0055

SHORT CIRCUIT RATIO

0.513