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The power circuit is a half wave rectifier controlled by a digital controller. The output of the power
circuit is applied to the exciter terminals of the generator.
For safety, the regulator should provide 20% to 30% more voltage than is required by the generator.
The supply voltage of the regulator has a range of 50 to 280 Vac and supports transients up to 300
Vac.
Example: The field voltage of the generator must be less than 20 to 30% of the supply voltage
rectified in half wave. The field voltage waveforms are shown below in figure.
Figure 7 – Output voltage in function of the firing angle
The load of the regulator will be the field of the generator which is an inductive resistive load. This
will cause the current waveform to be continuous.
Note: Field current specification in full load is made with resistive and inductive load, controlling the
tripping to obtain the maximum field currents.
PROTECTIONS
Protections act directly on the virtual key that is virtually at the output of the controller, canceling the
voltage at the regulator output. The operation will only be restored as the "RESET" of the equipment,
which is performed when the regulator is de-energized. When the regulator is operating normally
and detects an event that causes an actuation of some protection, it releases a status via relay by
opening the contacts of the auxiliary contact terminals, with the relay being NF (normally closed),
the regulator is operating normally, and with the relay being in the NA (normally open) the regulator
has some actuated protection. The relay status is activated only when the Regulator is controlling.
During the re-energization of the equipment, the last protection activated during a period of 5
seconds will be indicated through the RGB LED.
Note: After the reset before energizing the causes must be checked.
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