Kutai electronics EA63-2.5 User manual

KUTAI ELECTRONICS INDUSTRY CO., LTD.
TEL : [phone] FAX : [phone] Website : www.kutai.com.tw
Headquarters : No.3, Ln. 201, Qianfu St., Qianzhen Dist., Kaohsiung City 80664, Taiwan
EA63-2.5
Generator Automatic Voltage Regulator
Operation Manual
Self ExcitedAutomatic Voltage Regulator
Compatible with Basler AVC63-2.5*
* Use for reference only and not a genuine Balser product
Use with Kutai EP200 Paralleling Module for parallel operation

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2EA63-2.5
SECTION 1 : SPECIFICATION
Sensing Input
EMI Suppression
Voltage 90 130 Vac @ 120 Vac
Internal electromagnetic interference filtering
180 260 Vac @ 240 Vac
1 phase 2 wire, DIP switch selectable
Static Power Dissipation
Frequency 45/65 Hz, adjustment
Max.10 watts
Output
Under Frequency Protection
Voltage Max. 50 Vdc @power input 120 Vac
Adjustable range 45 55 Hz
Max. 63 Vdc @power input 240 Vac
Current Continuous 2.5A
Voltage Thermal Drift
Intermittent 4A for 60 sec.
Less than 3% at temperature range -40 to +70 ˚C
Resistance Min. 25 ohms
Fuse Spec. Slow blow 5x 20mm S505-3.15A / 250V
Environment
Operating Temperature -40 to +60 ˚C
External Voltage Adjustment
Storage Temperature -40 to +85 ˚C
Max. +/- 15% @ 5K ohms 1 watt potentiometer
Relative Humidity Max. 95%
Vibration 1.5 Gs @ 5 –30 Hz
Voltage Regulation
5.0 Gs @ 30 –500 Hz
Less than +/- 1% ( with 4% engine governing )
Dimensions
Build Up Voltage
101.0 (L) x 69.0 (W) x 22.0 (H) mm
5 Vac residual volts at power input terminal
Weight
107 g +/- 2%
TYPICAL FREQUENCY COMPENSATION
CURVES (See Figure 1)
1. When the frequency of the generator is lower
than the factory setting, the rated phase voltage
will decrease to protect the regulator or exciter
because of over exciter current.
2. Factory Setting：45 Hz +/- 4%
ATTENTION
1. AVR can be mounted directly on the engine,
genset, switchgear, control panel, or any position
that will not affect operation. For dimension
reference, please see Figure 2.
2. All voltage readings are to be taken with an
average-reading voltmeter.
Figure 1 Typical Frequency Compensation Curves
Unit : mm
Figure 2 Outline Diagram

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EA63-2.5 3
SECTION 2 : WIRING
2.1 Operation
The following system operation procedures provide
instructions for adjusting the EA63-2.5 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
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.
2.2 Preliminary SET-UP
2.2.1 Verify that the voltage regulator specifications
conform with the generator system requirements.
2.2.2 Ensure the voltage regulator is correctly
connected to the generator system.
2.2.3 Install the fuses as described in Fuses.
2.2.4 Set the regulator 「VOLT ADJ」and external
「VOLTADJ」( if used ) as follows :
Regulator 「VOLTADJ」: Fully CCW
Remote 「VOLTADJ」: Centered
2.3 System Start-UP
2.3.1 Perform preliminary set-up as described in the
above paragraphs.
NOTE :
All voltage readings are to be taken with an average
reading voltmeter.
2.3.2 Start prime mover and bring up to rated speed.
RESULT :
Voltage should build up. If not, perform Field Flashing.
2.3.3 Slowly adjust the regulator VOLT ADJ CW until
the generator output voltage reaches the nominal
value. If used, adjust the remote VOLTADJ 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.
2.3.4 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.
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.
2.4 Operational Test
2.4.1 Connect the test setup as shown in the following
figure, Operational Test. Do not apply power.
Ensure that the light bulb is rated for 120V and is
less that 100W.
2.4.2 Adjust the regulator VOLT ADJ and/or remote
VOLTADJ to maximum CW.
2.4.3 Apply 240V, 50/60 Hz power to the regulator. The
light bulb should illuminate.
2.4.4 Slowly adjust the regulator VOLT ADJ control
CCW. At the regulation point, the light bulb
should extinguish.
Figure 3 Potentiometer and Connector Locations

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4EA63-2.5
2.5 The following notes () apply to the
interconnection diagrams :
2.5.1 If external pot is not used, short terminals 6 and 7.
2.5.2 Item not supplied by KUTAI ELECTRONICS.
2.5.3 Select fuses with high interrupting capacity.
2.5.4 Excitation On / Off Switch ( If used).
Operational Test
Figure 4
Interconnection Diagram, 120 / 240 V Nominal,
1-phase, 3-Wire
Figure 5
Interconnection Diagram, 120 / 208 V Nominal,
3-phase, 4-Wire, Wye Connection
Figure 6
Interconnection Diagram, 277 / 480 V Nominal,
3-phase, 4-Wire, Wye Connection
Figure 7
※Use only original supplied spare protection fuse for fuse replacement.
※Appearance and specifications of products are subject to change for improvement without prior notice.