HT automatic voltage stabilizers and servo voltage
stabilizers are used to get stable input voltage, irrespective of the
voltage received from electricity authorities. Additionally, these
stabilizers also prevent the transformer and other electrical equipment
from getting overloaded. Automatic voltage stabilizers and servo voltage
stabilizers take care of wide voltage variation ranges continuously and
in on load conditions.
The variations of more than ± 1% of the rated output voltage are
sensed through solid state relay. This relay operates on 230 V, 1Ø
supply. It sends signals to the controlling servo voltage stabilizers
motor, which drives the roller mechanism in a direction to bring voltage
to the rated output voltage.
Construction:
- Automatic voltage stabilizers and Automatic servo voltage
stabilizers have helical coils mounted on a conventional laminated
core.
- Carbon rollers are assembled on a fiber glass carrier board and
are traverse to the length of the coil track. The rollers are
connected to the electric output terminals.
Nearby the regulating coil, a number of compensating winding are
connected in parallel, which are short circuited to reduce the effect of
core-flux fringing. It also keeps the reactance of the regulator
constant at any position of the rolling contact.
