2018.01 / a
6
Electric Power Generation
T1
T4
T7
T10
-
+
T2
T5
T8
T11
T3
T6
T9
T12
UF OE
UF S V
R1 R2 U N F1 F2
R121
Installation and maintenance
R121
AVRs
5657 en -
4 - MAIN FUNCTION OF THE AVR
The AVR is powered by the terminals of the AC generator with 110 VAC-220 VAC at 50/60 Hz.
The regulated sensing voltage is based on the AVR input power.
MAIN FIELD
STATOR: 12 wires (T1 to T12 identification)
Exciter field
Fuse
Slow blow
250 V 6.3 Amps
Over excitation
limit
50 Hz/60 Hz
section
Voltage setting
Under speed
Under speed
Stability
Voltage reference
2K POTENTIOMETER
OR WIRE LINK
red
black
Armature
Varistor