Milton CAT D100-6_S 100 kW AREP Excitation System User Manual
Avr14 – arep excitation system
G E N E R A T O R S
Electrical Power
Output
Sense
Main Stator
Exciter
Stator
Exciter
Rotor
Mechanical
Rotational
Power Input
Diode
Bridge
Main Rotor
Set Reference
Output
AVR
Power
Auxilliary Coils
(Series and Shunt)
to give constant
power source
AVR14 – AREP
EXCITATION SYSTEM
The AREP excitation system improves the voltage
response of the generator during transient load
application, such as motor starting. AREP also
provides a sustained short-circuit current for the
operation of protective devices. This option
requires the standard self-excited generator
be replaced by a generator that has been fitted
with auxiliary AREP coils. These coils provide
excitation power to the AVR, giving both shunt
and compound (booster) characteristics.
Isolation of the excitation power ensures
that regulation is not affected by non-linear
distorting loads.
AVR14 is only available on 3-phase models.
www.cat-ElectricPower.com
Market: N. America
Information contained in this publication may be considered confidential.
© 2005 Caterpillar
LEHE4016 (01-05)
Discretion is recommended when distributing.
All Rights Reserved.
Materials and specifications are subject to change without notice.
Printed in U.S.A.
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