Generator Automatic Voltage Regulator Operation Manual
Contents
1. the user can disable this function by placing the jumper from terminals JUMP 1 to 2 To reactivate protection place the jumper back to 2 and 3 Notice of Use Installation Notice Refer to Figure 2 and 4 Only a trained professional can Installation calibrate and inspections this AVR Install this AVR inside the generator enclosure away from moisture corrosion and from any easy to reach area Generator Operation Notice During operation the temperature on the surface of the AVR can reach higher the 60 C 140 F DANGER When the AVR is working never touch or ground the heat sink on the AVR The AVR heat sink is an electrically live terminal A warning sticker is in place on top of the heat sink 5 Field Flashing When operating this AVR for the first time the polarity of the residual magnetism may be reversed or too weak to achieve the necessary build up on the regulator If reversing the field connections does not induce build up and the residual voltage is less than 5 Vac shut down the Prime mover and proceed with the following steps 1 Stop the generator and disconnect the field wires F and F apply a DC Voltage using a batteries positive terminal to F and the negative terminal to F using a current limiting resistor of 3 5 ohms 20 watt Allow approximately 3 seconds before removing the battery 3 4 Disconnect the AVR AC power input terminals and restart the generator re2. 2 4 Generator Automatic Voltage Regulator Operation Manual Universal 16Amp Self Excited Automatic Voltage Regulator for use in 220 380 440 480 VAC brushless generators with paralleling compatibility SP illll POWERWORLD This component must be housed inside alternator terminal box and be fitted by a competent electrical engineer SP POWERWORLD LTD Willows Waterside Ryhall Stamford Lincs PE9 4EY UK Tel 44 1780 756872 Email info sp powerworld com www sp powerworld com 1 INTRODUCTION Sensing Input Voltage 170 510 VAC Single Phase 2 wires Voltage is DIP Switch selectable Frequency 50 60 Hz DIP Switch selectable Power Input Voltage 60 300 VAC Single Phase 2 wires Output Voltage Max 90 VDC 240 VAC input Current Continuous 16A Intermittent 20A for 10 sec Resistance Min 5 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 Load Current Compensation 1A or 5A Max 7 PFO 5 DIP Switch Selectable Analogue Voltage Input Max t5VDC 10 3VDC Over Excitation Protection Max Output DCV 95 20Sec External Volts Adjustment 5 with 2K ohm 1 watt trimmer Unit Power Dissipation Max 10 watt Under Frequency Protection Factory Setting 50 60 Hz DIP SW selectable Soft Start Ramp Time 2 Sec Dimensions 41mm L 156mm W 106mm H Weight
3. 450g 2 The EA16 AVR is an update of the EA15A AVR It is similar to the original EA15A in power and voltage sensing capabilities but with new enhanced paralleling functions the user can now select the CT inputs either 1 amp 5 Amp or use new A1 amp A2 analogue signal inputs terminals for use with PLC paralleling controls It has new over voltage excitation safety circuits to prevent damage caused by the accidental detachment of the sensing wires or irregularities on the generator s excitation circuits d kd td 156 138 ae lt R N lt A z LL elelelelelelele W w AA AA ollo uh q Y i TRIM DROOP STAB VOLT U F SwW1 UF OE UNIT mm Figure 1 Outline Drawing Outline Dimension 1 For enclosure dimension and mounting hole diameter please reference from Figure 1 The protection fuse capacity is 16A 250V slow blow type Terminal 6 35mm 1 4 inch Fast On terminals With 4mm crimping terminal ATTENTION 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 Safely secure all wirin
4. LT trim to the rated voltage NOTE If the external VR is not used short terminal VR1 and VR2 5 U F Under Frequency protection setting At 60Hz U F factory set at 55Hz At 50Hz U F factory set at 45Hz To adjust the U F setting select the correct system frequency start engine and adjust engine speed to the required U F frequency for example 55Hz or 45Hz slow adjust U F potentiometer until the U F red LED turn ON returning the engine speed to normal turn the LED off Function of the Under Frequency trim pot During start up or shutdown the engine speed changes going over or under its rated RPM Hz This AVR has an Under Frequency circuit to protect the AVR and exciter you do not need to disconnect the AVR when idling the engine If load is higher than the generator s capacity the Under Frequency activates reducing the generators voltage preventing generator overload 3 Over Excitation Protection This AVR has over Excitation Protection preventing the generator from working under unusually high excitation Excitation Protection includes generator overload accident removal of sensing wires and incorrect voltage setting When problems occur the AVR will gradually shutdown the excitation voltage to the minimum residual voltage If the O E LED turn ON and stays ON you need to reset the AVR by shutting the engine for 10 seconds When working the generator in parallel this protection is not required
5. g 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 operating EAI6 2 P1 P2 Power Input Terminals from 60 to Terminal Description 300Vac 50 60Hz 16A rated F F Maximum Output current 16A VS1 VS2 Voltage sensing input terminals Volts selected using DIP SW1 for 220V or 400V 1 S2 Load Current Compensation Droop CT secondary current input selected by using DIP SW 1A or 5A If droop not used leave terminals open VR1 VR2 External Voltage trim use 2K Ohms 1 watt trimmer for 5 voltage adjustment Keep terminals shorted when not in use A1 A2 Analogue Voltage Input terminals used for Power Factor correction from a external PLC The PLC controls provides a DC voltage signal to adjust the generator voltage Max Adjustment range is 5VDC Keep terminals open when not used DIP Switch 1 to 3 SW1 OFF 220VAC 170 to 260VAC ON 400VAC 340 to 510VAC OFF CT Secondary Input 1A ON CT Secondary Input 5A OFF Generator Frequency 60Hz 52 61 Adjustment ON Generator Frequency 50Hz 42 51 Adjustment SW2 SW3 LED Indicator U F Under Frequency Indicator O E Over Excitation Indicator Terminals 1 2 and 3 If 1 and 2 shorted Over Excitation Protection is OFF If 2 and 3 Shorted Over Excitation Protection is ON Adjustment and Setting TRIM works
6. h Breaker not turned on Switch on ON Engine RPM under speed Increase engine speed frequency above25HZ Out voltage low Poor adjustment is made Read start procedure carefully and adjust again U F protection activated Increase generator speed U F activated Incorrect voltage Read user s manual to select correct voltage selection Out voltage high Poor adjustment is made Read start procedure carefully and adjust again Incorrect voltage selection Read user s manual to select correct voltage Out voltage instable Poor adjustment is made Read start procedure carefully and adjust again Field voltage requirement lower Inquire our distributor to solve the rang of regulator x Please use original spare fuse x Product Performance specification and appearance are subject to change Improvement without prior notification EAI6 5
7. measure the residual voltage If this voltage is greater than 5VAC reconnect voltage regulator and voltage build up should be successful If measured less than 5VAC repeat steps 5 1 and 5 2 If repeating steps 5 1 and 5 2 does not result in generator voltage build up and residual is greater than 5VAC replace with a new voltage regulator CAUTION Over excite may damage the AVR or the exciter GEN e VR1 VR2 M A2 VR1 VR2 At A2 Figure 2 Paralleling Connection EAI6 P1 P2 F F VS1 VS2 K IL P1 P2 F F VS1 VS2 K L EA16 EA16A VR1 VR2 A1 A2 VR1 VR2 At A2 EXT VR EXT VR Figure 3 220V Connection Figure 4 380 480V Connection 6 TROUBLE SHOOTING SYMPTOM CAUSE CORRECTION Voltage does not Residual voltage below 5VAC Reference from 5 Field Flashing build up F F polarity reversed F and F reverse the connection F F P1 P2 VS1 VS2 not Reference from Figure 3 and 4 connection connected Burnt fuse Change fuse 16A 250V Ext Switc
8. together with a bias voltage applied to terminals A1 and A2 This signal is supplies by an external Power Factor Paralleling PLC Use the TRIM potentiometer to adjust the DC voltage input that controls the level of the generator s output voltage When set counter clockwise the control level is zero and if moved clockwise the maximum control range is 10 The signal connected to A1 and A2 can be unipolar 0 or bipolar Check with the manufacture of the Paralleling control PLC EAI6 2 DROOP Select switch S1 or S2 pending on the secondary current of the CT that you are using Voltage droop works when the CT and the AVR senses that the output of the generator voltage and current waveforms are out of synch and the AVR droops the output voltage of the generator to correct it STAB If the generator output voltage oscillate adjusting the STAB potentiometer will stabilize the output voltage over adjustment will result in high voltage variation when load is applied Use an analog type multimeter when making this adjustment Connect the meter to terminals F and F and slowly adjust STAB potentiometer to the point when the pointer stops moving VOLT Move to set the generator output voltage set DIP Switch 1 to the generator working voltage Set SW1 to OFF 220V for use from 170 to 260V Set SW1 to ON 400V for use from 340 to 510V When using and external VR set it to the central position and adjust the AVR VO
Download Pdf Manuals
Related Search