Basler VR63-4A/UL User manual

BASLER ELECTRIC, BOX 269, HIGHLAND, IL 62249 PHONE [phone] FAX [phone]
INTRODUCTION
The VR63-4A/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
(at 240 Vac input).
Exciter Field Dc Resistance:
15 ohms minimum; 100 ohms maximum.
Ac Power Input:
Operating range: 190 Vac to 240 Vac ±10%
Single phase, 50/60 Hz, Burden 500 VA.
Sensing Input:
100-120 Vac, Single phase, 50/60 Hz ±10%,
1 VA burden.
Voltage Adjust Range:
90-132 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:
Output power is removed under the following
conditions: Exciter field voltage exceeds 100
±5 Vdc for a time inversely proportional to
voltage magnitude, or within 0.2 seconds if the
exciter field voltage exceeds 135 ±5 Vdc.
Voltage Build-up:
Internal provisions for automatic voltage build-
up from generator residual voltages as low as
10 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 26 Hz; 0.036"
double amplitude at 26 to 50 Hz; and 5 Gs at
50 to 500 Hz.
Shock:
Withstands up to 15 Gs in each of three
mutually perpendicular axes.
Weight:
14 oz. (0.40 kg) Net.
CSA Approved/UL Recognized
FUSES
It is recommended that fuses with high
interruption capability be installed per the
interconnection diagram to protect wiring from
faults before the regulator. Install 5 A, 250 V
fuses with a high interruption capability in the
lines 3 and 4. Refer to the Interconnection
Diagrams.
NOTE
Fuse must be installed per the
interconnection diagrams to avoid inter-
rupting the field current.
MOUNTING
The regulator may be mounted in any
position. Refer to the Drilling Diagram.
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.
INSTRUCTION MANUAL
FOR
VOLTAGE REGULATOR
Model: VR63-4A/UL

Power for the exciter field and regulator
circuitry is derived from the generator output
or auxiliary winding. The operable power
input range is 90 to 132 Vac.
For sensing, single-phase voltage from the
generator is connected between E1 and 4.
Note that terminal 4 is common to both power
and sensing.
FREQUENCY COMPENSATION
The frequency compensation characteristic is
to improve system load pickup performance
by restraining voltage recovery until frequency
has also started to recover.
The regulator is preset at the factory for 45 Hz
“corner frequency” for 50 Hz system. For 60
Hz system, a 55 Hz “corner frequency” is
achieved by disconnecting the external Hz
leads. Be sure to insulate the disconnection.
Frequency Compensation Curves
OVEREXCITATION SHUTDOWN
If the exciter field voltage exceeds 100 ±5
Vdc, the regulator automatically removes the
field current after a time delay. The time
delay is inversely proportional to the mag-
nitude of the detected overvoltage condition
up to the 135 ±5 Vdc point. Beyond 135 ±5
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.
Typical Time Delay Characteristic Curves
VOLTAGE ADJUST RHEOSTAT (VAR)
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 1/2 watt resistance is
adequate for most applications. See
Interconnection Diagrams.
OPERATION
The following system operation procedures
provide instructions for adjusting the VR63-
4A/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 Diagram.
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 the
generator output voltage reaches
nominal value. If used, adjust remote
voltage adjust to set generator output to
exact value desired.
ACCESSORY EQUIPMENT
Voltage Adjust Rheostat for remote mounting-
Order Basler P/N 17724 for locking, slotted
shaft rheostat.
OPERATIONAL TEST
a. Connect the test setup as shown in
Operational Test. Do not apply power.
Ensure that light bulbs are rated for 120
V and less than 100 W.
b. Adjust regulator VAR and/or remote VAR
to maximum CCW.
c. Apply 240V, 60 Hz power to regulator.
d. Slowly adjust the regulator VAR control
CW.
RESULT:
1) Before minimum brilliance is reached, the
light bulb should attain 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 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 3and 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.
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 OF BASLER ELECTRIC COMPANY.
Publication:
9 1668 00 995
© 1998, Basler Electric Co., Highland, IL 62249
First Printing November 1986
Revision: D December 1998
ECO: 1867

Interconnection Diagram, 208/240 V Nominal
Operational Test
Interconnection Diagram, 120V Generator with Auxiliary Winding