Kutai electronics ADVR-073 User manual

Hybrid Universal Analog/Digital 7 Amp Voltage Regulator
with over-excitation and lost of sensing Proteccion with
Provision for Power Input from an auxiliary winding
Operations Manual
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2ADVR-073
1. SUMMARY
The ADVR-073 is an advance (Hybrid Analog/Digital
Voltage Regulator) design for general-purpose
isochronous applications. The ADVR-073 uses an
reliable CPU (Central Processing Unit) in its design.
This eliminates complex analogue components and
circuits that are inherently over sensitive to
temperature eliminating voltage instabilities and drift.
In addition, we added over excitation and loss of
sensing shutdown protections, with matching U/F,
O/E LED indicator lights. Consequently, this AVR
prevents the generator from excitation overload,
preventing exciter and regulator damage. It is easy
to install and flexible for use in both shunt type and
generators with auxiliary windings.
2. SPECIFICATION
Sensing Input
Voltage 170 ~ 520 VAC, 1 phase 2 wire
DIP switch selectable
Frequency 50 / 60 Hz, DIP switch selectable
Power Input
Voltage 100 ~ 300 VAC, 1 phase 2 wire
Output
Voltage Max. 63 VDC @ 220 VAC input
Current Continuous 7A
Intermittent 15A for 10 sec
Resistance 9 to 100 ohm
Voltage Regulation
< ± 0.5% ( with 4% engine governing )
Voltage Build-up
Residual voltage at AVR terminal > 5 VAC
Thermal Drift
0.03% per
°C change in AVR ambient
External Volts Adjustment
7% with 1K ohm 1 watt trimmer
EMI Suppression
Internal electromagnetic interference filtering
Unit Power Dissipation
Max. 8 watt
Under Frequency Protection (Factory Setting)
At 50 Hz - knee point set at 45 Hz
At 60 Hz - knee point set at 55 Hz
Over Excitation Protection
78 ±5VDC @220VAC 5sec
Soft Start Ramp Time
3 sec.
Dimensions
150mm L * 115mm W * 51.5mm H
Weight
430g ± 2%
3. WIRING
3.1 A to C: Sensing Input
DIP SW-2 is switch ON, voltage sensing from 170
to 260V (See Figure 2 & 3)
DIP SW-2 is switch OFF, voltage sensing from
340 to 520V (See Figure 4)
3.2 B to C: Power Input
Power Input terminals from B to C use 100 to
300VAC shunt or from an auxiliary windings.
3.3 Power Input Voltage Selection
If generator rated voltage is 220VAC (Line to line
phase voltage), the power input B, C and sensing
input A, C can be joined (See Figure 3) or
separately (See Figure 2).
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ADVR-073 3
3.4 F+, F−: Connect generator field wires
F+ and F−are the positive and negative excitation
output terminals.
EXT.VR are used to connect the external voltage
adjustment rheostat, use a (1K ohm 1W)
Rheostat. Keep terminals shorted, when not
used.
Always use high quality wire AWG16 or 1.25mm2
85-degrees C, 600V to connection terminals A, B,
C, F+ and F−.
4. DIP SWITCH SETTING
4.1 SW-1 Frequency
DIP SW-1 switch ON, for use in 50 Hz
DIP SW-1 switch OFF, for use in 60 Hz
4.2 SW-2 Sensing Voltage Selection
DIP SW-2 switch ON, input voltage 170 to 260V
DIP SW-2 switch OFF, input voltage 340 to 520V
4.3 SW-3 Activate Over-Excitation Protection
DIP SW-3 switch ON the over Excitation
Protection is disabled. If over excitation occurs,
the O/E LED turns-on, but the ADVR will not
shutdown and protect.
DIP SW-3 switch OFF Over Excitation Protection
is activated. If over excitation occurs, the O/E
LED turns-on and the ADVR will shutdown
excitation.
5. System Protection
5.1 Under Frequency Protection (Roll off)
To prevent over excitation, or if the generator
runs at the wrong speed the ADVR activates the
under frequency protection and decreases field
excitation.
Dip switch 1 together with the U/F adjustment,
sets the Knee-Point frequency were this
activation takes place. This adjustment is already
factory preset.
When engine frequency falls under the
Knee-Point frequency setting, the U/F protection
indication LED turn on. However, when the
Generator frequency is higher than the
Knee-Point frequency the LED turns off.
5.2 Why Over Excitation Protection?
If you are using a standard AVR and you
overload the generator or the sensing wires get
disconnected (when using the auxiliary powered
winding) , the excitation voltage rapidly increase,
causing severe damage to the AVR or exciter.
The ADVR-053 has over excitation protection
shutdown that cuts excitation at once.
When over excitation protection is activated and
the excitation voltage exceeds 78 ±5VDC @220V
for over 5 seconds, the AVR immediately
shutdown the excitation output, leaving only the
residual voltage output and turning on the O/E
shutdown LED. To reset, the engine must come
to a complete stop for at least 10 seconds and
then restarted.
If over excitation protection is disabled, the
warning LED indication turn on, but the excitation
output is not disconnected.
6. ADJUSTMENT
6.1 VOLT: Voltage Adjustment
DIP SW-2 switch ON, input voltage 170 to 260V
DIP SW-2 switch OFF input voltage 340 to 520V
6.2 STAB: Stability Adjustment
careful adjust the STAB (Stability) adjustment,
improves the AVR and generator feedback time
to improve voltage stability.
6.3 U/F: Setting the under-frequency knee
point
DIP SW-1 set on OFF, set for 60Hz operation.
U/F adjustment range at 60Hz is from 50 to 60Hz
(Factory preset @ 55Hz).
DIP SW-1 set to ON, set for 50Hz operation.
U/F adjustment range at 50Hz is from 40 to 50Hz
(Factory preset @ 45Hz).
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4ADVR-073
7. Startup Adjustment
7.1 Voltage Adjustment (VOLT)
Set VOLT and STAB full CCW. Start generator and
wait until it reaches rated frequency. Slowly adjust
VOLT CW to its rated voltage. If you are using an
external VR, set it first to its center position before
setting volts.
7.2 Stability Adjustment (STAB)
If the generator voltage oscillates back and forth,
adjust the STAB to steady the output voltage. Over
adjustment, CW may give you large voltage swings
when changing loads, Use an analog type voltmeter
when setting STAB. Connect the voltmeter to
terminals F+ and F−and slowly adjust STAB for
minimum needle movement when varying load.
7.3 Under Frequency Adjustment (U/F)
To adjust the U/F setting, select working HZ using
DIP SW 1, start the engine and adjust engine speed
to either 55Hz or 45Hz slow adjust U/F until the red
U/F LED turns ON. Returning the engine speed
back to normal turns the LED light off.
8. Field Flashing
When setting up the AVR for the first time, the
polarity of the residual magnetism may be reversed
or too weak to operate the regulator. If reversing the
field connections does not induce build-up, and the
residual voltage is less than 5 VAC, shut down the
engine and continue with the following steps.
Stop the generator and disconnect the field wires
(F+ and F−), apply a DC Voltage (3 to 12VDC)
using a car batteries positive to terminal F+ and
battery negative to terminal F−, using a
current-limiting resistor from 3 to 5 ohms 20 watt.
(See Figure 5).
Flash for 3 seconds before removing the battery.
Disconnect the AVR AC power input terminals
and restart the generator, measure the residual
voltage. If this voltage is now greater than 5VAC,
reconnect the voltage regulator, now voltage
build-up should be successful. If the voltage is
still less than 5VAC, repeat steps 7.1 and 7.2.
If residual voltage is greater than 5VAC, but still
unable to build up voltage output, replace with a
new voltage regulator.
WARNING
Excessive field flashing may cause damage
to the AVR or the generator exciter coil.
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ADVR-073 5
9. TROUBLE SHOOTING
NOITCERROCESUACMOTPMYS
Engine under speed Please refer to generator service manual
Low residual voltage Please refer to section 7 “FieldFlashing”
B, C, F+, F–, Terminal connection
not properly connected
Reference from Figure 2 ~ Figure 4
No Voltage Output
Defective generator Please refer to generator service manual
A, C, B, C, Terminal incorrect
connection
Reference from Figure 2 ~ Figure 4
Defective VR or not properly
connected
Check connection and VR
Under frequency Please refer to generator service manual
Incorrect exciter specification Please refer to generator service manual
Low Voltage Output
AVR Incorrect voltage selected Please refer to section 3 “DIP Switch setting”
Blown Fuse Over excitation current / incorrect
wiring
Reference from Figure 2 ~ Figure 4
A, C, terminals not properly
connected or incorrectly connected
Reference from Figure 2 ~ Figure 4
Over Voltage Output
AVRIncorrect voltage selected Please refer to section 3 “DIP Switch setting”
Unstable Voltage
Output
“STAB” Stability incorrectly adjusted Please refer to section 5 “Adjustment”
ATTENTION
1.AVR can be mounted directly on the engine, genset, switchgear, control panel, or any position that will not
affects operation. For dimension reference, please see Figure 1.
2. All voltage readings are to be taken with an average-reading voltmeter Meggers and high-potential test
equipment must not be used. Use of such equipment could damage the AVR.
10. FIGURE AND SIZE
ADVR-073
G
~
S
T
R
N
1000 OHM
EXT. VR
SW-2 ON 170 ~ 260VAC
Figure 2
ADVR-073
UNITS:MM
Figure 1
UNIT : mm
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6ADVR-073
ADVR-073
G
~
S
T
R
N
1000 OHM
EXT. VR
G
~
S
T
R
N
1000 OHM
EXT. VR
ADVR-073
20~200 OHM
DIODE
Field
SWITCH
BATT.
ADVR-073
G
~
S
T
R
N
Field
Aux. winding
1000 OHM
EXT. VR
Substitute only with original model protection fuse.
We reserve the right to make changes without prior notice.
ADVR-073
G
~
S
T
R
N
1000 OHM
EXT. VR
CAV025~043FFO2-WS
CA
V062~071NO2-WS
Figure 3 Figure 4
Figure 5 With Aux. Winding
Figure 6
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