ADVR-073
Contents
1. SW 2 ON 170 260VAC SW 2 OFF 340 520VAC Figure 3 Figure 4 aano zZ Aux winding zl 1000 OHM e g Vv alee ADVR 073 Flash with Battery With Aux Winding Figure 5 Figure 6 X Use only original supplied spare protection fuse for fuse replacement x Please accept our sincere apology if any modification in performance specification or appearance is made without prior notice 6 ADVR 0732. ADV REO S Hybrid Universal Analog Digital Voltage Regulator Operation Manual Self Excited 7 Amp Analog Digital Voltage Regulator For shunt and auxiliary windings generators With over excitation and lost of sensing protection HURRA LARAOS KUTAI ELECTRONICS INDUSTRY CO LTD Headquarters No 3 Lane 201 Chien Fu ST Chyan Jenn Dist Kaohsiung TAIWAN Tel 886 7 8121771 Fax 886 7 8121775 URL http www kutai com tw 1 SUMMARY The ADVR 073 is an advance Hybrid Analog Digital Voltage Regulator design for general purpose isochronous stand alone applications The ADVR 073 uses an extremely reliable CPU Central Processing Unit in its design This eliminates complex analogue components and circuits that are inherently over sensitive to temperature anomalies as a result eliminating voltage instability and drift 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 68 VDC 220 VAC input Current Continuous 7A Intermittent 15A for 10 sec Resistance 9to 100 ohm Voltage Regulation lt 0 5 with 4 engine governing Voltage Build up Residual voltage at AVR terminal gt 5 VAC Thermal Drift 0 03 per C change in AVR ambient 3 WIRING 3 1 Ato C Sensing Input e DIP SW 2 is switch ON voltage sensing range from 170 to 260V See Figure 2
3. STAB Stability incorrectly adjusted Please refer to section 5 Adjustment Output 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 C E Over Excitation protection E U F Frequency protection SW Frequency Selectior SW 2Z Sensing Voltage Selectior SW 2 ON 1 70 ie 260VAC SW 2 Activate Over Excitation Protectior Figure 1 Outline Drawing Figure 2 ADVR 073 5 Howz 1000 OHM
4. amp 3 e DIP SW 2 is switch OFF voltage sensing range from 340 to 520V See Figure 4 3 2 B to C Power Input Power Input terminals from B to either C use 100 to 300VAC shunt or auxiliary windings 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 with its resulting exciter and regulator damage It is easy to install and flexible for use in both shunt type and generators with auxiliary windings 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 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 ADVR 073 3 4 F F Connect generator field wires e F and F are the positive and negative excitation output terminals e EXT VR is the connections for the external voltage adjustment Use a 1K ohm 1W rheostat when not in use keep terminals shorted X Alway
5. e 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 e f 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 ADVR 073 9 TROUBLE SHOOTING No Voltage Output Engine under speed Please refer to generator service manual Low residual voltage Please refer to section 7 Field Flashing B C F F Terminal connection Reference from Figure 2 Figure 4 not properly connected Defective generator Please refer to generator service manual Low Voltage Output A C B C Terminal incorrect Reference from Figure 2 Figure 4 connection Defective VR or not properly Check connection and VR connected Under frequency Please refer to generator service manual Incorrect exciter specification Please refer to generator service manual AVR Incorrect voltage selected Please refer to section 3 DIP Switch setting Over excitation current incorrect Reference from Figure 2 Figure 4 wiring Over Voltage Output A C terminals not properly Reference from Figure 2 Figure 4 connected or incorrectly connected AVR Incorrect voltage selected Please refer to section 3 DIP Switch setting Unstable Voltage
6. ed on a auxiliary powered AVR the excitation voltage rapidly increase causing severe damage to the AVR or exciter The ADVR 073 has over excitation protection shutdown that cuts excitation at once e When over excitation protection is activated and the excitation voltage exceeds 78 t5VDC 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 e 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 e DIP SW 2 switch ON input voltage 170 to 260V e DIP SW 2 switch OFF input voltage 340 to 520V 6 2 STAB Stability Adjustment e 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 to ON set for 50Hz operation e U F adjustment range at 50Hz is from 40 to 50Hz Factory preset 45Hz e DIP SW 1 set to OFF set for 60Hz operation e U F adjustment range at 60Hz is from 50 to 60Hz Factory preset 55Hz 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 vo
7. ltage 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 e 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 e Flash for 3 seconds before removing the battery e Disconnect the AVR AC power input terminals and restart the generator measur
8. s use high quality connection 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 e DIP SW 1 switch ON for use in 50Hz e DIP SW 1 switch OFF for use in 60Hz 4 2 SW 2 Sensing Voltage Selection e DIP SW 2 switch ON input voltage 170 to 260V e DIP SW 2 switch OFF input voltage 340 to 520V 4 3 SW 3 Activate Over Excitation Protection e DIP SW 3 switch ON Over Excitation Protection Disabled If over excitation occurs the O E LED turns on but the ADVR will not shutdown and protect e DIP SW 3 switch OFF Over Excitation Protection 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 e To prevent over excitation if the generator runs at the wrong speed the ADVR activates the under frequency protection and decreases field excitation e 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 e 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 ADVR 073 5 2 Over Excitation Protection e f you are using a standard AVR and you overload the generator or the sensing wires get disconnect
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