SR 4 GENERATOR
SYSTEMS OPERATION
OUTPUT VOLTAGE SENSING
Voltage sensing by regulator module (A1) is through
a circuit from connections in phases 1 and 3 of stator
(L6) to terminals (20) and (22). The circuit then goes:
From terminals (20) and (22) through wires (20) and
(22) to spade terminals (1) and (2) on regulator
module (A1).
Through regulator module (A1) to spade terminal
(5).
From spade terminal (5) on regulator module (A1)
through wire (5) through the red wire to voltage
droop rheostat (R1).
From voltage droop rheostat (R1) to voltage level
rheostat (R2).
From voltage level rheostat (R2) through wire (6) to
fuse (F1).
Through fuse (F1 ), thermal protector (TP) and wire
(24) to terminal (24).
From terminal (24) to the tapped connection in
phase 2 of stator (L6).
The voltage divider in regulator module (A1) has a
capacitive reactance. Since capacitive reactance will go
up as frequency goes down or will go down as frequency
goes up. the regulator module gives a voltage control on
the basis of volts per hertz.
L6
Stator
A1
Regulator module
F1
Fuse
R1
Voltage droop potentiometer
R2
Voltage level rheostat
TP
Thermal protector
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