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BASLER ELECTRIC, BOX 269, HIGHLAND, IL 62249 PHONE 618/654-2341
FAX 618/654-2351
INTRODUCTION
The AVC63-4 Voltage Regulator is designed
for use on 50/60 Hz brushless generators.
The regulator includes frequency
compensation, overexcitation shutdown, a
solid-state build-up circuit, and EMI filtering.
ELECTRICAL SPECIFICATIONS
Dc Output Power:
4 Adc at 63 Vdc (252W) maximum
continuous,
7 Adc at 100 Vdc (700W) forcing one minute
(at 240 Vac input).
9 Adc at 134 Vdc (1206W) forcing for 10
seconds (at 153 Vac input).
Exciter Field Dc Resistance:
15 ohms, minimum; 100 ohms maximum.
Ac Power Input:
Operating range: 190 Vac to 240 Vac, Single
phase, 50/60 Hz 10%, Burden: 500 VA.
Sensing Input:
190-240 Vac, single phase, 50/60 Hz 10%,
common with Ac Power Input.
Voltage Adjust Range:
171-264 Vac.
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 filter
(EMI filter).
Overexcitation Shutdown:
Field voltage shuts down after time delay if
exciter field voltage exceeds 100 Vdc, 5%
(See Overexcitation Shutdown for inverse
time delay curve and description).
Voltage Build-up:
Internal provisions for automatic voltage build-
up from generator residual voltages as low as
6 Vac.
Power Dissipation:
8 Watts maximum.
PHYSICAL SPECIFICATIONS
Operating Temperature:
-40 C (-40 F) to +60 C (+140 F).
Storage Temperature:
-65 C (-85 F) to +85 C (+185 F).
Vibration:
Withstands 1.3 Gs at 2 to 27 Hz; 0.036"
double amplitude at 27 to 52 Hz; and 5 Gs at
52 to 1000 Hz.
Shock:
Withstands up to 20 Gs in each of three
mutually perpendicular axes.
Weight:
8 oz. (0.22 kg) Net.
FUSES
It is recommended that fuses with high
interruption capability be installed per the
interconnection diagram.
NOTE
Fuse must be installed per the
Interconnection diagram to avoid inter-
rupting the field current.
MOUNTING
The regulator may be mounted on the
generator in any convenient position. Refer to
the Outline and Drilling Diagrams.
AVC63-4 Outline Diagram
3.56
2.31(58.7)
(90.4)
0 .20 (5 .1) DIA.
(2 PLACES)
NO TE : NUM B E RS I N P A RE NTHE S I SA RE I N M I L L I M E
TERS .
12-04-97D2717-28
Drilling Diagram
VOLTAGE ADJUST RHEOSTAT
An internal screwdriver control provides
adjustment of generator output voltage
Adjustment clockwise increases voltage.
The voltage regulator is shipped from the
factory with a jumper wire connected to
terminals 6 and 7. If a remote adjust rheosta
is used, the jumper wire should be removed
and the rheostat connected across the
terminals. A 1 kohm, 1/2 watt resistance wi
provide adequate voltage adjust range fo
most applications. See Interconnection
Diagram.
V/HZ "CORNER FREQUENCY" SELECTION
AND ADJUSTMENT
For 60 Hz systems, the regulator is preset a
the factory for a 55 Hz "corner frequency"
For 50 Hz systems, a 45 Hz "corne
frequency" is achieved by connecting the
jumper wire from the 60 Hz terminal to the 50
Hz terminal.
Frequency Compensation Curves
OVEREXCITATION SHUTDOWN
Overexcitation shutdown is included that
removes the output power if the exciter field
voltage exceeds 100 Vdc. If exciter field
voltage exceeds 100 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 up to the 135 Vdc point.
Beyond 140 Vdc, the field voltage is removedafter approximately
0.2 seconds. Refer to the
following figure.
CONFIDENTIAL INFORMATION
OF BASLER ELECTRIC COMPANY, HIGHLAND, IL.
IT IS LOANED FOR CONFIDENTIAL USE, SUBJECT
TO RETURN ON REQUEST, AND WITH THE
MUTUAL UNDERSTANDING THAT IT WILL NOT BE
USED IN ANY MANNER DETRIMENTAL TO THE
INTEREST OFBASLER ELECTRIC COMPANY.
Publication:
9 1668 00 999
1997, Basler Electric Co., Highland, IL 62249
First Printing June 1995
Revision: A December 199
INSTRUCTION MANUAL
FORVOLTAGE REGULATOR
Model: AVC63-4Part Number: 9 1668 00 126
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Typical Time Delay Characteristic Curves
After output power is removed, the regulator
can be reset by decreasing the input voltage
to less than 10 Vac for a minimum of 2
seconds; this may be accomplished by
stopping the prime mover or by interrupting
the regulator input with a reset switch.
EXCITER FIELD POWER CIRCUIT
Connect regulator terminal F+ to the brushless
exciter field terminal F+ and regulator terminal
F- to exciter field terminal F-.
CAUTION
The dc resistance of the exciter field
must be equal to or greater than 15 ohms
and less than 100 ohms.
If the exciter field dc resistance is less than 15
ohms and if the full load field current does not
exceed the maximum continuous current
rating of the regulator, a resistor of sufficient
wattage must be added in series with the field
to bring the total resistance to 15 ohms.
POWER /SENSING INPUT
Connect wiring as shown in the
Interconnection Diagram.
Power for the exciter field and regulatorcircuitry is derived
from the generator output
or auxiliary winding. The operable power
input range is 171 to 264 Vac and is
connected to Terminals 3 and 4.
OPERATION
The following system operation procedures
provide instructions for adjusting the AVC63-4
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 the system start-up.
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 SET-UP
1. Verify that the voltage regulator
specifications conform with the generator
system requirements.
2. Ensure that the regulator wires are as
follows:
a) If the remote voltage adjust rheostat is
not to be connected, ensure terminals 6
and 7 are shorted with a jumper.
b) If a 55 Hz "corner frequency" for 60 Hz
systems is desired, ensure that the Hz
wire is connected to the 60 Hz terminal.
If a 45 Hz "corner frequency" for 50 Hz
systems is desired, ensure that the Hz
wire is connected to the 50 Hz.
terminal.
3. Ensure the voltage regulator is correctlyconnected to the
generator system.
4. Install the fuses per paragraph Fuses.
5. Set the regulator VAR and external VAR
(if used) as follows:
Switch Initial Setting
Regulator VAR Fully CCW
Remote VAR Centered
SYSTEM START-UP
1. Perform preliminary set-up as described
in the above paragraphs.
NOTE
All voltage readings are to be taken withan 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 VAR CW until
the generator output voltage reaches the
nominal value. If used, adjust the remote
VAR 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. If a minimal residual of 6 V is not
present, perform Field Flashing.
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:
1. 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.
2. Replace voltage regulator.
FIELD FLASHING
When the regulator is operated with the
generator for the first time, the polarity of
residual magnetism may not be correct or the
magnitude not enough. If the generator does
not build up after startup, shut down the prime
mover and proceed with the following steps:
1. With the prime mover at rest, apply a dc
source (not grounded) of not more than 12
V, to terminals "F+" (positive) and "F-"
(negative) in series with a limiting resistor of
3 to 5 ohms.
2. Allow approximately 3 seconds before
removing the dc source.
3. With the voltage regulator inpu
disconnected (Terminals 3 and 4), start the
prime mover and measure voltage a
generator terminals. If voltage is greate
than 6 volts, voltage buildup should be
successful. Reconnect voltage regulator
Repeat field flashing procedure if less than
6 volts residual is measured.
4. If repeating steps (1) and (2) does not resul
in generator voltage buildup, replace the
voltage regulator.
OPERATIONAL TEST
1. Connect the test setup as shown in the
following figure, Operational Test. Do no
apply power. Ensure that the light bulb i
rated for 120 V and is less than 100 W.
2. Adjust the regulator VAR and/or remote
VAR to maximum CCW.
3. Apply 240 V, 60 Hz power to the regulator
The light bulb should flash momentarily.
4. Slowly adjust the regulator VAR contro
CW.
