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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.

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RESULT:

1. Before minimum brilliance is reached,

the light bulb should attain maximum

brilliance to signify the regulating point.

2. At the regulation point, a small change

in the VAR should turn the light bulb on or

off.

Interconnection Diagram, 208/240 V Nominal

Operational Test