Automatic Voltage Regulator User s Manual

Automatic Voltage Regulator User S Manual-Free PDF

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1 GENERAL INFORMATION,1 1 DESCRIPTION, EA63 5 is an automatic voltage regulator AVR for AMG synchronous generator industrial. application series The AVR is typically supplied by a single phase auxiliary winding wound into the. stator slots It also can be supplied by permanent magnet generator PMG or phase voltage of. main terminal,1 2 SPECIFICATION,Table 1 Specifications. Sensing input Current compensation, Voltage 220 440 VAC SW1 selectable 1 or 5 A 0 2 VA SW2 selectable. 185 290 VAC at 220 VAC Voltage built up, 330 515 VAC at 440 VAC Residual voltage 5 VAC at 25 Hz. Frequency 50 60 Hz SW3 selectable Max 7 at p f 0 7. 49 60 Hz at 60 Hz preset 57Hz Analogue voltage input. 40 50 Hz at 50 Hz preset 47Hz Un 0 15 at 0 10 VDC,Power input External voltage adjustment VR.
Voltage 30 260 VAC 10 with 1 k resistance 0 5 W,Frequency 40 500 Hz C C. Output External filter capacitor terminal,Voltage 85 VDC at 110 VAC input Respond time. 170 VDC at 220 VAC input 1 cycle,Current continuous 5 ADC Temperature drift. maximum 40 ADC 0 45 at 35 to 65,Voltage built up Dissipation. Residual voltage 5 VAC at 25 Hz 12 W,Voltage adjustment Dimensions.
1 0 engine speed variation within 4 140 mm x 125 mm x 43 mm. Excitation resistance,Document identification Lang Rev ind Sheet. ABB Generators Ltd 8AMG 5855292 en C 2,1 3 DIMENSIONS. Figure 1 AVR outline drawing, For enclosure dimensions and mounting holes refer to Figure 1 The protection fuse capacity is. 5 A 250 V slow blow type, 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. Safely secure all wiring connection Do not install AVR at place with high vibration to. prevent loosen connection For safety reasons please do not touch the heat sink while. Document identification Lang Rev ind Sheet,ABB Generators Ltd 8AMG 5855292 en C 3.
2 ADJUSTMENTS,2 1 DIP SWITCH ADJUSTMENT, 2 1 1 SW 1 see Figure 2 voltage selection SW 1 is used to select the suitable. genset s sensing input voltage S1 S2 When sensing input is 440 VAC. 380 480 V switch the SW 1 to ON If the sensing input is 220 VAC switch. SW 1 to OFF position, ATTENTION If system voltage is 220 V but the SW 1 is set to ON position 440V it will. cause over voltage,1 2 3 4 5 6,Figure 2 Dip switch SW. 2 1 2 SW 2 see Figure 2 is used to select the suitable current transformer s. current input C1 C2 If current transformer s current is 5 A switch SW 2 to. ON position If the current is 1 A switch SW 2 to OFF position. 2 1 3 SW 3 see Figure 2 is used for frequency selection If genset s rated. frequency is 60 Hz switch SW 3 to ON position If rated frequency is 50 Hz. switch SW 3 to OFF position, ATTENTION If 60 Hz frequency is selected while the rated frequency of the generator is 50. Hz it may result the under voltage fault, ATTENTION If a 60 Hz generator is used but selected frequency is 50 Hz stop the engine.
The over excitation current may damage AVR and generator. 2 1 4 If genset power is less than 90 kW switch SW 4 SW 5 and SW 6 to OFF. position see Figure 2 If the power is 90 200 kW switch SW 4 to ON. position SW 5 and SW 6 remain in OFF position If the power is more than. 200 kW switch SW 4 SW 5 and SW 6 to ON position, ATTENTION Each time when SW 4 SW 5 or SW 6 positions are changed the stability. STAB must be re adjusted to achieve the optimum genset performance The setting of the. dip switches SW must be conducted while the generator is not in operation. 2 2 TRIMMER ADJUSTMENT, VOLT Voltage setting see Figure 3 is used to adjust the genset s rated output. voltage When SW 1 is ON 440 V the adjustable range is 330 515 VAC. When SW 1 is OFF 220 V the adjustable range is 180 270 VAC. ATTENTION AVR AC voltage readings are all average values. Ext potentiometer Connect 0 5 W potentiometer with 500 resistance to the VR terminal see. Figure 3 The adjustable voltage range is 5 of Un With 1 K resistor the. adjustable voltage range is 10 of Un If this function is not required. please short circuit these two terminals, STAB Stability adjustment see Figure 3 It must be conducted while the. generator is operating without load At first adjust the STAB potentiometer. POT clockwise until the voltage becomes unstable Then adjust to anti. clockwise approximately 1 5 of rotation as the voltage just reaches the. critical point knee point of stabilization The voltage is now stable but very. close to become unstable,Document identification Lang Rev ind Sheet. ABB Generators Ltd 8AMG 5855292 en C 4, U F Under frequency protection adjustment see Figure 3 When generator s.
driving speed falls below the knee point the under frequency protection. circuit will begin to intervene The voltage and frequency begin to decrease. in linear descend Coordinate with the dip switch SW 3 to make the. frequency selection of 50 or 60 Hz When selecting 50 Hz the adjustable. range is from 40 50 Hz and the factory presets is at 47 Hz When selecting. 60 Hz the adjustable range is from 49 60 Hz and the factory presets is at. U FL When under frequency protection is activated see Figure 3 the red LED. will light up, DROOP Droop adjustment see Figure 3 When paralleling the AVR compensates. the input rating and voltage shifting based on load current This is based on. AVR s internal circuit calculation This way the AVR increases or decreases. the voltage When phase current lags the voltage AVR decreases original. voltage setting and if the phase current leads the voltage it increases the. original voltage setting The increase and decrease range can be preset by. the DROOP adjustment, TRIM Analogue voltage input sensitivity see Figure 3 When terminals A1 and A2. are added with a DC input 0 10 VDC the TRIM is used to adjust the. influence level from the DC input to the rated voltage If the TRIM potential. POT is adjusted fully to counter clockwise the additional signal will not. cause any influence If the TRIM is adjusted fully clockwise then the. additional signal will produce a maximum effect,Document identification Lang Rev ind Sheet. ABB Generators Ltd 8AMG 5855292 en C 5,3 CONNECTION. 3 1 TERMINALS,P1 P2 Auxiliary winding power input see figure 3.
PMG power input see figure 4,The input range is 30 260 VAC at 40 500 Hz. C C External filter capacitor terminal see figure 3 The filter voltage endurance. must be greater than 1 7 x voltage between P1 and P2. F F Excitation output see figure 3 Connect to generator excitation winding. VR External voltage adjustment see figure 3 Use 1 W VR with 1K. resistance Voltage adjustable range is now 10 If this function is not. required please short circuit these two terminals, C1 C2 Load current compensation see figure 3 Input range is 1 A or 5 A. selected by SW 2 0 2 VA, S1 S2 Sensing input see figure 3 Input range 220 or 440 VAC selected by SW. 1 Input resistance is 2 M, A1 A2 Analogue voltage input terminal see figure 3. Document identification Lang Rev ind Sheet,ABB Generators Ltd 8AMG 5855292 en C 6.
3 2 CONNECTION DIAGRAM, Figure 3 Connection diagram Power input Auxiliary winding. Figure 4 Connection diagram Power input PMG,Document identification Lang Rev ind Sheet. ABB Generators Ltd 8AMG 5855292 en C 7,4 TROUBLE SHOOTING. The following instructions are intended to assist in localizing a fault within the excitation system as a. whole However it is not possible to deal with all eventualities in full. Table 2 Trouble shooting,FAILURE POSSIBLE CAUSE ACTION. Make separate excitation running then make, Voltage not built up Low remanence self excitation running.
AVR wires disconnected Check AVR connections,Problem with rectifier. bridge Check the diode,Defective AVR Change AVR,Defective generator Refer generator manual. Low voltage AVR wires disconnected Check AVR connections. Defective generator Refer to generator manual,Problem with rectifier. bridge Change the diode,Generator below allowed,frequency Correct engine speed. Original AVR settings,High voltage incorrect Adjust VOLT trimmer.
AVR wires disconnected Check AVR connections,Defective AVR Change AVR. Original AVR settings,Voltage unstable incorrect Adjust STAB trimmer. Variable running speed Correct engine speed,AVR connections wrong Check AVR terminals. Defective AVR Change AVR,Voltage lost during, running Defective generator Refer to generator manual. Defective rectifier Change invalid parts,Defective AVR Change AVR.
Document identification Lang Rev ind Sheet,ABB Generators Ltd 8AMG 5855292 en C 8. Automatic Voltage Regulator User s Manual Type designation EA63 5 Application AMG Synchronous Generator Industrial Application Series Document identification Lang Rev ind Sheet ABB Generators Ltd 8AMG 5855292 en C 2 1 GENERAL INFORMATION 1 1 DESCRIPTION EA63 5 is an automatic voltage regulator AVR for AMG synchronous generator industrial application series The AVR is typically su

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