Publication:
Rev
First Printing 09/01
Copyright
9 2858 00 991
-
Revised
2001
Basler Electric
Phone 618 654-2341
Route 143 Box 269
Highland IL 62249 USA
Power Systems Group
Fax 618 6542351
http://www.basler.com
info@basler.com
INSTRUCTIONS
FOR
VOLTAGE REGULATOR
AVC63-4A
9 2858 00 102
INTRODUCTION
The AVC63-4A Voltage Regulators are
designed for use on 50/60 Hz brushless
generators. The regulator includes frequency
compensation, over-excitation shutdown, a
solid-state buildup circuit, and EMI filtering.
ELECTRICAL SPECIFICATIONS
Dc Output Power:
4 Adc at 63 Vdc (252 W) maximum
continuous,
7 Adc at 100 Vdc (700 W) forcing one minute
(at 120 Vac input).
9 Adc at 134 Vdc (1206 W) forcing for 10 sec-
onds (at 153 Vac input).
Exciter Field Dc Resistance:
15 ohms, minimum; 100 ohms maximum.
AC Power Input:
Operating range: 95 Vac to 139 Vac, ±10%;
Single phase, 50/60 Hz; Burden: 450 VA.
Sensing Input:
95-139 Vac, ±10%, or 190-277 Vac, ±10%,
single phase, 50/60 Hz.
Regulation Accuracy:
Better than ±1.0% no load to full load.
Response Time:
Less than 1.5 cycles for ±5% change in
sensing voltage.
EMI Suppression:
Internal electromagnetic interference (EMI)
filter.
Overexcitation Shutdown:
Field voltage shuts down after time delay if
exciter field voltage exceeds 95 Vdc, ±5%.
(See
Overexcitation Shutdown for inverse
time delay curve and description).
Voltage Buildup:
Internal provisions for automatic voltage
buildup from generator residual voltages as
low as 6 Vac.
Power Dissipation:
15 Watts maximum.
Terminations:
1/4 inch "Fast-On" terminals.
PHYSICAL SPECIFICATIONS
Operating Temperature:
-40 ° C to +60 ° C (-40 ° F to +140 ° F).
Storage Temperature:
-40 ° C to +85 ° C (-40 ° F to +185 ° F).
Vibration:
Withstands 1.2 Gs at 5 to 26 Hz; 0.036"
double amplitude at 27 to 52 Hz; and 5 Gs at
53 to 1000 Hz.
Shock:
Withstands up to 20 Gs in each of three
mutually perpendicular axes.
Weight:
10 oz. (0.28 kg) Net.
FUSES
Although the AVC63-4A has an internal fuse,
it is recommended that fuses with high
interruption capability be installed per the
interconnection diagram to protect wiring from
faults before the regulator. A spare fuse is
included with the AVC63-4A (internal fuse). It
is mounted "piggy-back" to the original fuse.
Refer to the
Outline Diagrams.
NOTE
Fuse must be installed per the inter-
connection diagrams to avoid inter-
rupting the field current.
AVC63-4A Outline Diagram (Top View)
AVC63-4A Outline Diagram (Side View)
V/HZ "CORNER FREQUENCY" SELECTION
AND ADJUSTMENT
For 60 Hz systems, the regulator is preset at
the factory for a 55 Hz "corner frequency.”
For 50 Hz systems, a 45 Hz "corner
frequency" is achieved by connecting a
jumper across terminals HZ1 and HZ2.
The corner frequency can be adjusted by the
UF ADJ rheostat on the AVR. Clockwise
rotation results in raising 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.
Frequency Compensation Curves
OVEREXCITATION SHUTDOWN
Overexcitation shutdown is included that re-
moves the output power if the exciter field
volt-age exceeds 95 Vdc. If exciter field
voltage exceeds 95 Vdc ±5%, the regulator
automatically removes field current, after a
time delay. The time delay is inversely
proportional to the magnitude of the detected
overvoltage condition. At 134 Vdc, the field
voltage is removed after approximately 10
seconds. Refer to the following figure.
Typical Time Delay Characteristic Curves
