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Basler Electric AVC63-2.5 User Manual

Basler Electric Accessories for electrical

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Publication

9318300991

Revision

B

First Printing: 01/98

Revised: 10/06

Copyright

2006

FOR

VOLTAGE REGULATOR

AVC63-2.5

9318300106

INTRODUCTION

AVC63-2.5 Voltage Regulators are intended
for use on 50/60 Hz brushless generators.
AVC63-2.5 features include frequency
compensation, a solid-state buildup circuit,
EMI filtering, and remote adjust capability.

WARNING!

To prevent personal injury or
equipment damage, only qualified
personnel should install, operate, or
service this device.

ELECTRICAL SPECIFICATIONS

DC Output Power

Maximum Continuous: 2.5 Adc at 63 Vdc

One-Minute Forcing: 3.97 Adc at 100 Vdc
(at 240 Vac input).

Exciter Field DC Resistance

25.2

Ω minimum.

AC Power Input

Single phase, 50/60 Hz

Operating range: 171 to 264 Vac, +10%

Burden: 350 VA.

Sensing Input

Single phase, 50/60 Hz

Operating Range: 171 to 264 Vac, +10%

Burden: 350 VA.

Regulation Accuracy

Better than ±1.0% no-load to full-load.

EMI Suppression

Internal electromagnetic interference (EMI)
filter

Voltage Buildup

Internal provisions for automatic voltage
buildup from generator residual voltages as
low as 10 Vac.

Terminations

¼ inch quick-connect terminals.

PHYSICAL SPECIFICATIONS

Temperature

Operating: –40 to 60

°C (–40 to 140°F)

Storage: –40 to 85

°C (–40 to 185°F)

Vibration

Withstands 1.5 G at 5 to 29 Hz; 0.036"
double amplitude at 29 to 52 Hz; and 5 G at
52 to 500 Hz.

Shock

Withstands up to 15 G in each of three
mutually perpendicular axes.

Weight

3.8 oz (108 g)

FUSES

It is recommended that fuses with high
interruption capability be installed per the
interconnection diagram to protect wiring
from faults before the regulator. See
Interconnection Drawings.

NOTE

Fuse must be installed per the
interconnection diagrams to avoid
interrupting the field current.

V/HZ "CORNER FREQUENCY"
SELECTION AND ADJUSTMENT

The corner frequency is adjusted by the UF
ADJ
rheostat on the AVR. Clockwise
rotation raises 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.

Typical Frequency Compensation Curves

OPERATION

The following system operation procedures
provide instructions for adjusting the AVC63-
2.5 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 system startup.

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 SETUP

1. Verify that the voltage regulator

specifications conform with the generator
system requirements.

2. Ensure the voltage regulator is correctly

connected to the generator system.

3. Install the fuses as described in Fuses.

4. Set the regulator VOLT ADJ and external

VOLT ADJ (if used) as follows:


Regulator VOLT ADJ: Fully CCW

Remote VOLT ADJ: Centered

SYSTEM STARTUP

1. Perform preliminary set-up as described

in the above paragraphs.

NOTE

All voltage readings are to be taken
with an 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 VOLT ADJ

CW until the generator output voltage
reaches the nominal value. If used, adjust
the remote VOLT ADJ 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.

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:

a. 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.

b. Replace voltage regulator.

OPERATIONAL TEST

1. Connect the test setup as shown in the

Operational Test Connections illustration.
Do not apply power. Ensure that the light
bulb is rated for 120 V and less than 100
W.

2. Adjust the regulator VOLT ADJ and/or

remote VOLT ADJ to maximum CW.

3. Apply 240 V, 50/60 Hz power to the

regulator. The light bulb should illuminate.

4. Slowly adjust the regulator VOLT ADJ

control CCW. At the regulation point, the
light bulb should extinguish.

The following notes apply to the intercon-
nection diagrams:

1. If external pot is not used, short terminals

6 and 7.

2. Item not supplied by Basler Electric.

3. Select fuses with high interrupting

capacity.

4. Excitation On/Off Switch (If Used).