EA45A220
Contents
1. 160 0 189 0 169 0 180 0 150 0 SECTION 2 ADJUSTMENT OOOO O SUTNING Outline Drawing Figure 1 Unit mm AUTOMATIC VOLTAGE REGULATOR QO POWER LAMP POWER LAMP Lights up when AVR is powered STAB Stability Adjustment Correct stability adjustment must be conducted while the generator is operating without load First adjust this STAB POT anti clockwise until the voltage becomes unstable and then slightly adjust it clockwise about 1 5 turn When the voltage just reaches the critical point knee point of stabilization where the voltage is stable yet very close to becoming unstable VOLT Voltage Adjustment Generator output voltage adjustment U F LAMP Lights up when the generator is in U F Under Frequency Protection QO U F LAMP Select frequency 50 or 60Hz according to the generator in use refer to section 4 U F Under Frequency Protection Adjustment When generator speed falls below the knee point the under frequency protection circuit will activate and the voltage begin to decrease in linear descend Adjustment Figure 2 EA45A220 SECTION 3 WIRING CONNECTION ae re F e Powen Fie Barr EA45A220 Figure 3 SECTION 4 FREQUENCY SELECTION AND KNEE POINT ADJUSTMENT 4 1 Frequency Selection Detach the controller from enclosure refer to Figure 4 and select the system freque2. 2 NASAZZO Generator Automatic Voltage Regulator Operation Manual Self Excited Automatic Voltage Regulator 45 Amp AVR for Carbon Brush Type Generators EA45A220HL Half Wave EA45A220FL Full Wave Parallel version is available for option Ise LARC A 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 SECTION 1 SPECIFICATION Sensing amp power Input Voltage 170 265 Vac 1 phase 2 wire Frequency 50 60 Hz selectable Output at 220 Vac input Voltage EA45A220HL Half wave Max 90 Vdc EA45A220FL Full wave Max 180 Vdc Current Continuous 45A Intermittent 60A for 10 sec Resistance EA45A220HL_ Min 1 4 ohms EA45A220FL Min 2 7 ohms Voltage Regulation lt 1 with 4 engine governing Build Up Voltage Residual voltage at AVR terminal gt 5 Vac 25 Hz External Volts Adjustment 6 330 0 Under Frequency Protection Factory Knee Point Setting 50 Hz system presets knee point at 45 Hz 60 Hz system presets knee point at 55 Hz Environment Operation Temperature 40 60 C Storage Temperature 40 85 C Relative Humidity Max 95 Vibration 3 Gs 100 2K Hz Cooling condition Forced with 120 0 L x 120 0 W x 38 0 H mm fan Dimensions 330 0 L x 189 0 W x 180 0 H mm Weight EA45A220HL 4 5 kgs 2 EA45A220FL 5 2 kgs 2
3. ated Refer to Section 4 Frequency selection and knee point adjustment Over output voltage Voltage set point is not properly adjusted Adjust VOLT POT anti clockwise to reach rated voltage Output voltage Stability range is not set properly Refer to Section 2 Adjustment unstable Hunting Field voltage or field resistance is too low Connect suitable resistor in series to increase total resistance X Appearance and specifications of products are subject to change for improvement without prior notice 4 EA45A220
4. dual voltage still cannot be built Kutai EB500 is strongly recommended see Figure 6 Figure 6 Manual Field Flash Solution 2 Install Kutai automatic flash module EB500 WARNING This Automatic Voltage Regulator is not equipped with loss Sensing Protection function Over Excitation Protection An additional Over Voltage Protection device for load may be required to avoid possible damage to the equipment or severe personal injury or death ATTENTION AVR installation should only be performed by a qualified technician Install AVR inside the generator control panel Sites to avoid high temperature moisture and fuel switch N O location where AVR cannot be easily reached AVR heat sink may reach a high temperature above 60 C when AVR is powered do not touch or ground AVR heat sink Make sure you have read and understand the Figure 7 contents of the instruction manual prior to installation Incorrect wiring connection may result in irreversible damage to the product and other equipments anc ee e POWER FIELD BATT EA45A220 ACC1 ACC2 SECTION 6 TROUBLE SHOOTING SYMPTOM POSSIBLE CAUSES SOLUTIONS Voltage does nol puid up Low output voltage Voltage set point is not properly adjusted Adjust VOLT POT clockwise to reach desired voltage External voltage adjusted too low Turn the external VR to reach desired voltage Under Frequency Protection is activ
5. ncy on the back of the controller refer to Figure 5 Figure 4 Open 50Hz Close 60Hz EA45AF PCB Reverse Side J1 close enable Low frequency protection open disable Low frequency protection Ji J2 2336 a gt im Figure 5 Magenta Pink Blue White EA45A220 4 2 Knee Point Adjustment 4 2 1 Turn the U F POT fully clockwise 4 2 2 Adjust VOLT POT to nominal level and speed down the engine to knee point 4 2 3 Turn the U F POT counter clockwise until the voltage starts to decrease U F lamp illuminates re adjust engine speed to rated speed SECTION 5 FIELD FLASHING When the regulator is installed correctly but the generator is failed to generate power Besides carbon brushes were worn out here are two possible causes below 5 1 The polarity of field is inverse Solution Exchange the connection of F and F 5 2 The residual voltage is less than 5 Vac Solution 1 5 2 1 Shut down generator disconnect the wiring between AVR and generator then flash the field Flashing duration 3 seconds See wiring in Figure 6 Resistor 3 5 ohms for full wave AVR Resistor 5 10 ohms for half wave AVR Warning Over field flashing may damage the field winding of generator 5 2 2 Restart generator and measure the residual voltage by AC Voltmeter if it is still less than 5 Vac repeat the previous process after several times the resi
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EA45A220