CONFIDENTIAL INFORMATION
OF BASLER ELECTRIC COMPAN Y, 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 OF BASLER ELECTRIC COMPANY.
INSTRUCTION MANUAL
FOR
VOLTAGE REGULATOR
Model: VR63-4C/UL
Publication:
9253700991
© 1998, Basler Electric Co., Highland, IL 62249
Revision: E September 1998
ECO: 143
First Printing March 1991
BASLER ELECTRIC, BOX 269, HIGHLAND, IL 62249 PHONE 618/654-2341 FAX 618/654-2351
INTRODUCTION
The VR63-4C/UL Voltage Regulators are
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.
WARNING
To prevent personal injury or equipment
damage, only qualified technicians or
operators should install, operate, or
service this device.
ELECTRICAL SPECIFICATIONS
DC Output Power:
4 Adc at 63 Vdc (252W) maximum continuous,
7 Adc at 100 Vdc (700W) forcing one minute
Weight:
10 oz. (0.28 kg) Net.
FUSES
It is recommended that fuses with high
interruption capability be installed per the
interconnection diagram to protect wiring from
faults before the regulator. Refer to the
Interconnection Diagrams.
NOTE
Fuse must be installed per the
interconnection diagrams to avoid interrupting the field current.
MOUNTING
The regulator may be mounted in any position.
Refer to the
Drilling Diagram
.
For 50 Hz system, the regulator is preset at
the factory for a 45 Hz “corner frequency”. For
60 Hz systems, a 55 Hz “corner frequency”. is
achieved by cutting the external Hz jumper
wires on the generator. Be sure to insulate the
two wires so that they are not exposed.
(at 120 Vac input).
Exciter Field DC Resistance:
15 ohms minimum; 100 ohms maximum.
AC Power Input:
Operating range: 85 Vac to 139 Vac, Single
phase, 50/60 Hz +
5%, Burden 450 VA.
Sensing Input:
85-139 Vac, Single phase, 50/60 Hz +5
%,
common with AC Power Input.
Voltage Adjust Range:
85-139 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:
Frequency Compensation Curves
OVEREXCITATION SHUTDOWN
If the exciter field voltage exceeds 95 ±5 Vdc,
the regulator automatically removes the field
current after a time delay. The time delay is
inversely proportional to the magnitude of the
detected overvoltage condition up to the 140
Vdc point. Beyond 140 Vdc, the field voltage is
removed within 0.2 seconds.
After shutdown, reset the regulator by
decreasing voltage below 6 Vac either by
stopping the prime mover or interrupting the
regulator input with a reset switch for 2
seconds or more.
Internal electromagnetic interference filter
(EMI filter).
Overexcitation Shutdown:
Output power is removed under the following
conditions: Exciter field voltage exceeds 95+
5
Vdc for a time inversely proportional to voltage
magnitude, or within 2 seconds if the exciter
field voltage exceeds 140+
5 Vdc.
Voltage Build-up:
Internal provisions for automatic voltage buildup from generator residual voltages as low as
6 Vac.
Power Dissipation:
12 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 1.2 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.
Drilling Diagram
EXCITER FIELD POWER CIRCUIT (wires F+
and F-).
Connect the regulator wire F+ to the brushless
exciter field terminal F+, and wire F- to
terminal F-.
CAUTION
The dc resistance of the exciter field must
be equal to or greater than 15 ohms and
less than 100 ohms.
POWER/SENSING INPUT CIRCUIT (wires 3
and 4)
Connect as shown by the
Interconnection
Diagrams.
Power for the exciter field and regulator
circuitry is derived from the generator output
or auxiliary winding. The operable power input
range is 85 to 139 Vac and is connected to
Terminals 3 and 4.
FREQUENCY COMPENSATION
The frequency compensation characteristic is
to improve system load pickup performance by
restraining voltage recovery until frequency
has also started to recover.
Typical Time Delay Characteristic Curves
VOLTAGE ADJUST
Screwdriver adjustable potentiometer adjusts
generator output voltage. Adjustment CW
increases voltage.
When using remote voltage adjust rheostat
(VAR), the VAR wire on the regulator should
be cut and the rheostat connected to both
ends. A 1 kohm and ½ watt resistance is
adequate for most applications. See
Interconnection Diagrams.
STABILITY ADJUST
An internal screwdriver adjustable
potentiometer provides adjustment to the
response rate of the generator output voltage
to a change in load. Clockwise rotation of this
adjustment provides an increase in the
response time and therefore decreases the
amount of voltage overshoot (increased
stability). Counterclockwise rotation of this
adjustment provides a decrease in the
response time (faster response time) and
therefore increases the amount of voltage
overshoot (decreased stability).
OPERATION
The following system operation procedures
provide instructions for adjusting the VR634C/UL Voltage Regulator.
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
To prevent damage to the regulator, complete
the following steps before proceeding with
system start-up.
a. Verify that the voltage regulator
specification conforms with the generator
system requirements.
b. Ensure that the regulator is correctly
connected to the generator.
See
Interconnection Diagrams.
c. Install fuses per
FUSES
paragraph.
d. Set the regulator VAR fully CCW and the
remote VAR (if used) to centered.
SYSTEM START-UP
a. Start the prime mover and bring up to
rated speed. Voltage should buildup. If a
minimum residual of 6 Vac is not present,
perform field flashing.
b. Slowly adjust VAR CW until voltage
reaches nominal value. If used, adjust
remote VAR to set generator output to
exact value desired.
OPERATIONAL TEST
a. Connect the test setup as shown in
Operational Test.
Do not apply power.
b. Adjust regulator VAR and/or remote VAR
to maximum CCW.
c. Apply 120V, 50/60 Hz power to regulator.
RESULT: Light bulb should flash momentarily.
d. Slowly adjust the regulator VAR control
CW.
Operational Test
RESULT:
1) Before minimum brilliance is reached, the
light bulb should reaches maximum brilliance
to signify the regulating point.
2) At the regulating point, a small change in
the VAR should turn the light bulb on or off.
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:
a. With the prime mover at rest, apply a dc
source (not grounded) of not more than
12V, to terminals F+(positive) and F-
(negative) in series with a limiting resistor
of 3-5 ohms.
b. Allow approximately 3 seconds before
removing the dc source.
c. Start prime mover and measure voltage
at regulator leads 3 and 4. If voltage is
greater than 6 volts, voltage build-up
should be successful. Repeat field
flashing procedure if less than 6 V
residual is measured.
d. If repeating steps 1 and 2 does not result
in generator voltage build-up, replace the
voltage regulator.
ACCESSORY EQUIPMENT
Voltage Adjust Rheostat for remote mounting Order Basler P/N 17724 for locking, slotted
shaft rheostat.
Interconnection Diagram, 208/240 V Nominal, 3-Phase, 4-Wire
Interconnection Diagram, 240 V Nominal, 3 Phase, 3-Wire
Interconnection Diagram, 120/240 V Nominal, Single-Phase with Neutral
Interconnection Diagram, 120 V Nominal, Single Phase