 |
Good regulation ±1%
from no load to full load at 0.8pf |
|
Response
time of the order of power cycles, if suitable
forcing margins are allowed in the machine.
These lowest possible time constants guarantee
quick voltage recovery on large load imposition
/rejection. Adjustable stability control.
|
|
Adjustable Droop control
enable parallel operation of machines of
different ratings. |
|
Large
safety margins allowed on rating of all
semi conductor devices and protection against
surges. |
|
Silicon
devices selected to provide satisfactory
operation even at high ambient temperature
up to 50ºC. |
|
|
Terminal
voltage of the alternator can be set manually
at ±10% of rated value. |
|
High
Performance and high reliability is achieved
through simple (low components / function
ratio) design. |
|
Design
offers DC contactor and Field Discharge
resistance to ensure very fast discharge
of rotor energy to prevent damage in an
event of stator fault. |
|
Manually selectable redundant
AUTO modes of operation, Thus 100% redundancy
is provided in the Electronic Control circuit.
100% redundancy in rectifier bridge can
be provided for critical application. |
|
Under
frequency roll off circuit to protect against
over excitation at low frequency (speed). |
|
Critical raw material
is meticulously chosen to give better performance,
reliability and long trouble free service. |
|
The
AVR can be used on all brush less alternators
and alternators with pilot DC exciter. |
|
AVR
is designed to cater to thyristor loads
up to 30-40%of rated generator load capacity. |
|
AVR
unit is capable of running in parallel with
other alternator and grid with little modification
and adjustments. By adding HT step down
transformer, this unit can also be used
on HT alternator. |
|
AVR
is offered with two Auto modes and one Manual
mode. Auto modes are powered with thyristorised
rectifier bridge while manual mode is powered
with diode rectifier bridge. Specially designed
power CTs and Choke circuit ensure reliable
operation even during transient load conditions. |
|
AVR
unit can have additional features like, Digital
AVR, Over excitation current limit, Over voltage
cut-off, RKVA upper and lower limits &
auto change over features between auto modes
possible. |
|
The
AVR Panel is suitable for Sugar industries
for cogeneration application, mini and micro
Hydro stations with added sophistication,
small and large DG sets for reliable operation
in standby mode. |
