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ARR Series Three Phase, Six Pulse SCR Charger

Corrective Maintenance

RS-420, Rev. 7

5-7

B. A complete rectifier assembly may be ordered, if you do not wish to replace individual parts.

When installing a new rectifier stack, observe the correct polarities.

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Summary of Contents for ARR Series

Page 1: ...ARR SERIES THREE PHASE SIX PULSE SCR CHARGER PRODUCT MANUAL RS 420 Rev 7 UNIPOWER LLC 65 Industrial Park Rd Dunlap TN 37327 Phone 1 954 346 2442 Toll Free 1 800 440 3504 Web site www unipowerco com...

Page 2: ...sure the carrier notes this on your receipt before you sign for the freight 2 EQUIPMENT INSPECTION 2 1 Within fifteen days open the crate and inspect the contents for damages While unpacking be carefu...

Page 3: ...RT Product support can be obtained using the following addresses and telephone numbers Corporate office UNIPOWER LLC 210 N University Dr Coral Springs FL 33071 United States Manufacturing facility UNI...

Page 4: ...accuracy or completeness of such information Further because the product s featured herein may be used under conditions beyond its control UNIPOWER LLC hereby disclaims and excludes all warranties ex...

Page 5: ...TINE MAINTENANCE 4 1 5 CORRECTIVE MAINTENANCE 5 1 5 1 VOLTAGE CHECKPOINTS 5 1 5 2 BALANCING PROCEDURE 5 1 5 2 1 2010 Series Refer to Cabinet Dimension section 5 1 5 2 2 1329 Series Refer to Cabinet Di...

Page 6: ...battery will not be required to provide the power needed for the load it remains fully charged In the AutoReg charger when the AC line supply is within the limits of 10 above or below the AC voltage...

Page 7: ...ment points and terminal points in the charger 1 2 IDENTIFICATION All UNIPOWER AutoReg chargers are equipped with a full identification nameplate as shown in the example below NOTE When requesting inf...

Page 8: ...malfunction 2 3 MOUNTING Chargers are floor mounted The dimensions of the different cabinet series are shown on page 4 If in doubt as to which cabinet series your charger belongs refer to the chart o...

Page 9: ...n the terminal board Be sure that the AC input leads are connected to points marked L1 L2 and L3 6 Connect the DC positive and the negative leads from the battery to the designated terminal points on...

Page 10: ...R Series Three Phase Six Pulse SCR Charger Installation RS 420 Rev 7 2 3 2 5 1 Cabinet Dimensions CABINET SERIES A B C D E F G H J K 1329 28 26 5 20 14 58 41 9 875 2 625 3 2 5 2010 36 34 5 17 17 78 15...

Page 11: ...1329 800 82 41 132 120 145 56 64 150 ARR130H200 2010 1100 108 132 120 145 56 64 200 ARR130K200 2010 1100 54 132 120 145 56 64 200 ARR260HK25 1329 450 28 14 264 240 290 112 128 25 ARR260HK50 1329 650 5...

Page 12: ...nt The float potentiometer controls the floating voltage of the charger when the toggle switch is in the NORMAL or FLOAT positions NOTE Both FLOAT and EQUALIZE Potentiometers are 10 turn devices The a...

Page 13: ...urrent limit setting of 125 is exceeded or the charger is operated at this output longer than two hours the charger warranty will become null and void Any adjustments above 125 of the rated output sho...

Page 14: ...C NO common normally open contacts and jumper terminals 3 and 4 3 Place the charger in equalize 4 Use the equalize adjustment to slowly raise the charger output voltage until the ohmmeter reads no re...

Page 15: ...ched 4 If the high voltage shutdown is properly set per the factory levels the ac circuit breaker will trip at 152 volts dc for a 130 volt charger or 305 volts dc for a 260 volt charger Note The setpo...

Page 16: ...on a discharged battery a higher DC voltage may be obtained by putting the toggle switch in the EQUALIZE position Refer to the chart on page 5 for the proper float and equalize voltages for specific b...

Page 17: ...e A board and also between the current transformer and the A board Its purpose is to tie the signal from the A board to the B boards to tie the signal from current transformers to the A board and to s...

Page 18: ...he terminals should be clean and should be tight Heating of terminals is a definite indication of corroded or loose terminal connections Fuse clips particularly are subject to overheating and corrodin...

Page 19: ...oint B control board for that phase so that the pattern is symmetrical Repeat this step for the remaining SCR bridges operating unit on one phase only for each balancing process Mark each board with t...

Page 20: ...ARR Series Three Phase Six Pulse SCR Charger Corrective Maintenance RS 420 Rev 7 5 2 5 3 VOLTAGE CHECKPOINT SCHEMATIC GENERALIZED...

Page 21: ...ds a Replace control fuse and check secondary voltage of AXF Auxiliary Transformer See instruction 5 4 4 a Replace auxiliary transformer a See instruction 5 4 6 a Replace printed cards or see instruct...

Page 22: ...5 Each should read 45 VAC 15 b If waveform is not correct replace the 18 point printed circuit board c See instruction 5 4 6 G Low Output Voltage approximately 50 output and not adjustable with NON V...

Page 23: ...ON NOTES CAUTION FOR YOUR OWN SAFETY BEFORE ATTEMPTING ANY OF THESE CHECKS BE SURE TO DISCONNECT BOTH THE AC POWER SOURCE AND THE BATTERY DISCHARGE THE FILTER CAPACITORS IF A PARTICULAR CHECK REQUIRES...

Page 24: ...Repeat this procedure for the other SCR To check for resistance of each gate to cathode of SCR s use X10 scale Should read from 70 to 200 ohms in forward and reverse directions An open or shorted gat...

Page 25: ...ix Pulse SCR Charger Corrective Maintenance RS 420 Rev 7 5 7 B A complete rectifier assembly may be ordered if you do not wish to replace individual parts When installing a new rectifier stack observe...

Page 26: ...s 5 and 6 and terminals 5 and 7 should be 45 volts 15 If these voltages are not found the auxiliary transformer is defective and should be replaced CAUTION Connect voltmeter probes before placing the...

Page 27: ...ot wish to check the circuit boards replace the entire board and return the defective one to the factory NOTE Ohmmeter checks for Printed Circuit Card Components A Transistors To check a transistor it...

Page 28: ...n of the same rating See parts list on page 22 E Capacitors To check a capacitor apply the ohmmeter probes to the capacitor terminals If the capacitor is good it will show a deflection to the zero res...

Page 29: ...ulse When one saturable reactor is conducting the other is being reset The reset current path consists of diode D25 or D26 the control transistor Q11 and the secondary winding of the AXF The amount of...

Page 30: ...nt load for the CT also limits the current limit adjustment range The current limit circuit consists of diodes D10 12 13 resistors R11 14 16 potentiometer P1 The voltage developed by the CT is applied...

Page 31: ...ARR Series Three Phase Six Pulse SCR Charger Circuit Descriptions RS 420 Rev 7 6 3 6 2 CONTROL BOARD SCHEMATICS...

Page 32: ...Resistor 5 6k Ohm W 10 JE00115 R12 112 Resistor 681 Ohm W 1 JE00101 R13 Resistor 1k Ohm W 10 JE00102 R14 Resistor 33k Ohm W 10 JE00109 R15 Resistor 390 Ohm W 10 JE00116 R16 Resistor 4 7k Ohm W 10 JE0...

Page 33: ...JE00186 R25 Resistor 33k Ohm W 10 JE00109 R26 Resistor 330k Ohm W 10 JE00463 R27 Resistor 10k Ohm W 10 JE00111 R28 29 210 Resistor 2 2k Ohm W 10 JE00105 R221 Resistor 1 5k Ohm W 1 JE00108 R212 213 Res...

Page 34: ...ARR Series Three Phase Six Pulse SCR Charger Circuit Descriptions RS 420 Rev 7 6 6 6 4 CONTROL BOARD A MBC01970 1 6 5 CONTROL BOARD B MBC01971 2...

Page 35: ...ARR Series Three Phase Six Pulse SCR Charger Circuit Descriptions RS 420 Rev 7 6 7 6 6 INTER PHASE BALANCE BOARD...

Page 36: ...rges from the same source the gradual build up of its voltage turns on Q14 When Q14 conducts it reverse biases D14 which allows the base voltage of Q13 to be established at the level determined by fee...

Page 37: ...r more chargers to be used on the same load with each charger having the same load 6 A blocking diode can be provided in the DC output to allow individual sensing of faults in chargers operation in pa...

Page 38: ...PROPRIETARY INFORMATION NOT TO BE COPIED USED TRANSMITTED OR DISCLOSED WITHOUT PRIOR WRITTEN PERMISSION FROM UNIPOWER LLC...

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