Basler Electric AVC63-2.5 User Manual
INTRODUCTION
AVC63-2.5 Voltage Regulators are intended
for use on 50/60 Hz brushless generators.
AVC63-2.5 features include frequency
compensation, a solid-state buildup circuit,
EMI filtering, and remote adjust capability.
WARNING!
To prevent personal injury or
equipment damage, only qualified
personnel should install, operate, or
service this device.
ELECTRICAL SPECIFICATIONS
DC Output Power
Maximum Continuous: 2.5 Adc at 63 Vdc
One-Minute Forcing: 3.97 Adc at 100 Vdc
(at 240 Vac input).
Exciter Field DC Resistance
25.2 Ω minimum.
AC Power Input
Single phase, 50/60 Hz
Operating range: 171 to 264 Vac, +10%
Burden: 350 VA.
Sensing Input
Single phase, 50/60 Hz
Operating Range: 171 to 264 Vac, +10%
Burden: 350 VA.
Regulation Accuracy
Better than ±1.0% no-load to full-load.
EMI Suppression
Internal electromagnetic interference (EMI)
filter
Voltage Buildup
Internal provisions for automatic voltage
buildup from generator residual voltages as
low as 10 Vac.
Terminations
¼ inch quick-connect terminals.
PHYSICAL SPECIFICATIONS
Temperature
Operating: –40 to 60°C (–40 to 140°F)
Storage: –40 to 85°C (–40 to 185°F)
Vibration
Withstands 1.5 G at 5 to 29 Hz; 0.036"
double amplitude at 29 to 52 Hz; and 5 G at
52 to 500 Hz.
Shock
Withstands up to 15 G in each of three
mutually perpendicular axes.
Weight
3.8 oz (108 g)
FOR
VOLTAGE REGULATOR
AVC63-2.5
9318300106
FUSES
It is recommended that fuses with high
interruption capability be installed per the
interconnection diagram to protect wiring
from faults before the regulator. See
Interconnection Drawings
Fuse must be installed per the
interconnection diagrams to avoid
interrupting the field current.
V/HZ "CORNER FREQUENCY"
SELECTION AND ADJUSTMENT
The corner frequency is adjusted by the UF
ADJ rheostat on the AVR. Clockwise
rotation raises the corner frequency (shifting
the curve to the right). To set the UF
rheostat:
1. Adjust the UF Rheostat fully CCW.
2. Start the generator and set at rated
voltage.
3. Adjust the generator frequency to the
desired kneepoint frequency.
4. Slowly adjust the UF ADJ rheostat
clockwise (CW) until the generator
voltage just begins to decrease.
Typical Frequency Compensation Curves
OPERATION
The following system operation procedures
provide instructions for adjusting the AVC63-
2.5 voltage regulator. Symptoms resulting
from a faulty regulator and certain generator
system problems are included, together with
suggested remedies.
Complete the following steps before
proceeding with system startup.
CAUTION
Meggers and high potential test
equipment must not be used.
Incorrect use of such equipment
could damage the semiconductors
contained in the regulator.
PRELIMINARY SETUP
1. Verify that the voltage regulator
specifications conform with the generator
system requirements.
2. Ensure the voltage regulator is correctly
connected to the generator system.
3. Install the fuses as described in Fuses.
4. Set the regulator VOLT ADJ and external
VOLT ADJ (if used) as follows:
.
NOTE
Regulator VOLT ADJ: Fully CCW
Remote VOLT ADJ: Centered
SYSTEM STARTUP
1. Perform preliminary set-up as described
in the above paragraphs.
NOTE
All voltage readings are to be taken
with an average reading voltmeter.
2. Start prime mover and bring up to
rated speed.
RESULT: Voltage should build up. If not,
perform field flashing.
3. Slowly adjust the regulator VOLT ADJ
CW until the generator output voltage
reaches the nominal value. If used, adjust
the remote VOLT ADJ to set the
generator voltage to the exact value
desired.
RESULT: Voltage should build up to rated
value. If voltage does not build up to rated
value, check generator for short or
excessive load.
4. Check regulator under normal operating
and loading conditions.
RESULT: Voltage regulation should be
better than ±1.0% no-load to full-load. If
regulation is not within this range, perform
the following steps:
a. Voltage reduction under load may be
due to speed change from no load to
full load, causing the frequency
compensation (V/Hz) circuit to reduce
voltage at lower frequencies.
b. Replace voltage regulator.
OPERATIONAL TEST
1. Connect the test setup as shown in the
Operational Test Connections
Do not apply power. Ensure that the light
bulb is rated for 120 V and less than 100
W.
2. Adjust the regulator VOLT ADJ and/or
remote VOLT ADJ to maximum CW.
3. Apply 240 V, 50/60 Hz power to the
regulator. The light bulb should illuminate.
4. Slowly adjust the regulator VOLT ADJ
control CCW. At the regulation point, the
light bulb should extinguish.
The following notes apply to the interconnection diagrams:
1. If external pot is not used, short terminals
6 and 7.
2. Item not supplied by Basler Electric.
3. Select fuses with high interrupting
capacity.
4. Excitation On/Off Switch (If Used).
illustration.
Publication
9318300991
Revision
B
First Printing: 01/98
Revised: 10/06
Copyright
2006
AVC63-2.5 Dimensions, Top View
AVC63-2.5 Dimensions, Side View
Operational Test Connections
Interconnections, 277/480 V Nominal,
3-Phase, 4-Wire, Wye Connection
Interconnections, 120/240 V Nominal, 1-Phase, 3-Wire
Interconnections, 120/208 V Nominal,
3-Phase, 4-Wire, Wye Connection
Locations of Controls and Connectors
Page 2 First Printing: 01/98
Revised: 10/06
Revision
B
Publication
9318300991
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