Basler Electric VR63-4C/UL - Manual

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
(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:
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 build-
up 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.
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 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.
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.
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.
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.
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
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:
9253700991
© 1998, Basler Electric Co., Highland, IL 62249
First Printing March 1991
Revision: E September 1998
ECO: 143
INSTRUCTION MANUAL
FOR
VOLTAGE REGULATOR
Model: VR63-4C/UL