Kutai electronics EA04C Manuale utente

KUTAI ELECTRONICS INDUSTRY CO., LTD.

TEL : +886-7-8121771 FAX : +886-7-8121775 Website : www.kutai.com.tw

Headquarters : No.3, Ln. 201, Qianfu St., Qianzhen Dist., Kaohsiung City 80664, Taiwan

EA04C

Generator Automatic Voltage Regulator

Operation Manual

Self ExcitedAutomatic Voltage Regulator

Compatible replacement for Basler VR63-4, VR63-4A and Marathon SE100A *

* Use for reference only and not genuine Basler product.

Use with Kutai EP200 Paralleling Module for parallel operation

______________________________________________________________________________________

2EA04C

1. SPECIFICATION

Sensing & power Input

Voltage 160 ~ 265 / 300 ~ 550VAC

DIP switch selectable

Frequency 45 / 55 Hz, selectable

Output

Voltage Max. 63 VDC @ 240 VAC input

Current Continuous 4A

Intermittent 7A for 60 sec.

Resistance Min. 15 ohm Max. 100 ohm

Voltage Regulation

< ± 1% ( with 4% engine governing )

Voltage Build-up

Residual voltage at AVR terminal > 5 VAC

Thermal Drift

0.05% per C change in AVR ambient

External Volts Adjustment

±15% with 1K ohm 1 watt trimmer

EMI Suppression

Internal electromagnetic interference filtering

Unit Power Dissipation

Max. 8 watt

Under Frequency Protection ( Factory Setting )

50 Hz system presets knee point at 45 Hz ±4%

60 Hz system presets knee point at 55 Hz ±4%

DIP switch selectable

Over Excitation Shutdown

Field volts shut down after a time delay if exciter

field volts exceed 100 ± 5 VDC.

Beyond 135 VDC, field volts will be removed

immediately

Operating temperature

-40C (-40F) to +60 C (+140F)

Storage temperature

-65C (-85F) to +85 C (+185F)

Dimensions

101mm L * 69mm W * 47.3mm H

Weight

175 g ±2%

2. WIRING (Refer to Figure 3)

●Power input 3, 4.

●Sensing input 4, P.

●F+, F–: Exciter.

●EXT. VAR : External Voltage Adjustment.

3. FREQUENCY COMPENSANION

The frequency compensation characteristic to

improve system load pickup performance by

restraining voltage recovery until frequency has also

started to recover.

For 50Hz system, the regulator is preset at the

factory for a 45Hz “corner frequency”.

For 60Hz systems, a 55Hz “comer frequency”.

●DIP switch 1 ON for sensing 160 ~ 265VAC.

●DIP switch 1 OFF for sensing 300 ~ 550VAC.

●DIP switch 2 ON for 50Hz generator system.

●DIP switch 2 OFF for 60Hz generator system.

4. 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 magnitude of the detected over

voltage condition up to the 135 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.

5. STARTUP PROCEDURE

5.1 Setting

1. Ensure the AVR model and the generator are

compatible.

2. Ensure all the wires of the regulator are correctly

connected.

______________________________________________________________________________________

EA04C 3

3. Ensure proper fuse is installed.

4. Turn voltage and stability potentiometer full

anticlockwise (lowest voltage level).

5. If used, turn external voltage potentiometer to the

middle position.

6. Use 600 VAC Voltage meter connect to AC

output terminal and measure the output voltage.

5.2 Startup Procedure

1. To start and run the generator at no load and

rated speed. The generator output voltage

should build up to a minimum level if the voltage

does not build up, It may cause by low residual

voltage of generator. Refer to field flashing

section in generator manual.

2. Slowly adjust voltage potentiometer until the

generator voltage reach the proper value.

6. STABILITY ADJUSTMENTS

1. Slowly rotate the STAB control in the clockwise

(CW) direction will change the AVR and

generator’s response time, if over adjusted the

voltage will become unstable, if under, the

instant heavy load voltage will change

significantly.

2. It is advised to use a voltmeter DCV to adjust the

STAB control F+, F–until the oscillate becomes

minor. By doing so helps to improve and reduce

the voltage change under heavy load.

7. FIELD FLASHING

When the regulator is operated with the generator

for the first time, the polarity 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 :

1. 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.

2. Allow approximately 3 seconds before removing

the dc source.

3. Start prime mover and measure voltage at

regulator leads 3 and 4. If voltage is greater then

5 volts, voltage build-up should be successful.

Repeat field flashing procedure if less than 6V

residual is measured.

4. If repeating steps 1 and 2 does not result in

generator voltage build-up, replace the voltage

regulator.

WARNING

Please make sure you have read and

understand the contents of the instruction

manual prior to installation. Incorrect wiring

connection may result in irreversible damage

to the product and other equipments.

Volt

EXT

FUSE

5A SW Stab

FUSE VR

EXT

Volt

Stab

F- 3F+ 4 P

(% OF NOMINAL)

GENERATOR OUTPUT VOLTAGE

10 20 30 40 6050

100

120

50HZ 60HZ

FREQUENCY (HZ)

Outline dimension

Figure 1

Frequency compensation curves

Figure 2

UNIT : mm

______________________________________________________________________________________

4EA04C

CAUTION

Meggers and high potential test equipment

must not be used. Incorrect use of such

equipment could damage the semiconductors

contained in the regulator.

VARF-

EA04C

3F+

4VAR

1K OHM

Field

SW 1 2 3

3F+ F- VAR

4VAR

1 32 EA04C

1K OHM

Field

8. SW DESCRIPTION

(1) SW-1 Sensing voltage selector

ON for 220V OFF for 380 / 480V.

(2) SW-2 Frequency selector

ON for 50Hz OFF for 60Hz.

(3) SW-3 Response

ON for fast OFF for slow.

※Use only original supplied spare protection fuse for fuse replacement.

※Please accept our sincere apology if any modification in performance, specification or appearance is

made without prior notice.

※SW-1 OFF for 380/480VAC system

(3Ø 4W 380/480 VAC)

Figure 3

SW-1 ON for 220VAC system

Figure 4

SW 1 2 3

AC Power Input :

3, 4 90 ~ 240VAC 50/60Hz

Sensing Input :

P, 4 160 ~ 265VAC 50/60Hz

300 ~ 550VAC 50/60Hz

DC Output Power :

F+, F–Max 63VDC 4A

EXT. VAR (1 K)

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