KVA BASE RATING : 25

FRAME : BC18F

CONTROL SYSTEM

SELF EXCITED ( NO PMG )

AVR

Std : SX460

Optional : SA421

VOLTAGE REGULATION

1.00%

0.50

WITH 4% ENGINE GOVERNING SX460 IS STANDARD AVR

INSULATION SYSTEM

CLASS H

PROTECTION

IP23 STANDARD

RATED POWER FACTOR

0.8 LAG

STATOR WINDING

DOUBLE LAYER CONCENTRIC

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 6309-2RS ( ISO )

BEARING NON-DRIVE END

BALL 6306-2RS ( ISO )

VOLTAGE SERIES STAR (Y)

415 / 240

FREQUENCY HZ

50

WEIGHT COMP. GENERATOR

154

WEIGHT WOUND STATOR

55

WEIGHT WOUND ROTOR

52.5

WR2 INERTIA KGM2

0.1909

% EFFICIENCY @ 0.8 PF AND 100% LOAD

86.9

COOLING AIR

0.095 M3 / SEC

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

0.5 OHMS

ROTOR WINDING RESISTANCE AT 22 DEG C

0.74 OHMS

X_d DIR AXIS SYNCHRONOUS

1.39

X’_d DIR AXIS TRANSIENT

0.15

X"_d DIR AXIS SUBTRANSIENT

0.09

X_q QUAD AXIS REACTANCE

0.70

X"_q QUAD AXIS SUBTRANSIENT

0.16

X_L LINKAGE REACTANCE

0.05

X2 NEGATIVE SEQUENCE

0.13

X₀ ZERO SEQUENCE

0.06

REACTANCES ARE SATURATED

VALUES ARE PER UNIT AT RATINGS AND VOLTAGE INDICATED

T’_d TRANSIENT TIME CONSTANT

0.022

T"_d SUBTRANSIENT TIME CONSTANT

0.0055

T’ do O.C. FIELD TIME CONSTANT

0.45

Ta ARMATURE TIME CONSTANT

0.0065

SHORT CIRCUIT RATIO

0.719