Related Manuals for Unipower ARR Series
Summary of Contents for Unipower ARR Series
- Page 1 ARR SERIES THREE PHASE, SIX PULSE SCR CHARGER PRODUCT MANUAL UNIPOWER, LLC 65 Industrial Park Rd Dunlap, TN 37327 Phone: +1-954-346-2442 Toll Free: 1-800-440-3504 RS-420, Rev. 7 Web site – www.unipowerco.com...
- Page 2 *SAVE ALL SHIPPING MATERIAL FOR THE INSPECTOR TO SEE! After the inspection has been made, call UNIPOWER. We will determine if the equipment should be returned to our plant for repair, or if some other method would be more expeditious. If it is determined that the equipment should be returned to UNIPOWER, ask the delivering carrier to send the packages back to UNIPOWER at the delivering carrier's expense.
- Page 3 ARR Series Three Phase, Six Pulse SCR Charger Front Matter NAMEPLATE Each piece of UNIPOWER equipment is identified by a part number on the nameplate. Please refer to this number in all correspondence with UNIPOWER. INITIAL SETTINGS All equipment is shipped from our production area fully checked and adjusted. Do not make any adjustments until you have referred to the technical reference or product manual.
- Page 4 CJM / 8-8-19 PROPRIETARY AND CONFIDENTIAL The information contained in this product manual is the sole property of UNIPOWER, LLC. Reproduction of the manual or any portion of the manual without the written permission of UNIPOWER, LLC is prohibited. © Copyright UNIPOWER, LLC...
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Page 5: Table Of Contents
ARR Series Three Phase, Six Pulse SCR Charger Front Matter TABLE OF CONTENTS INTRODUCTION ............................. 1-1 PURPOSE AND USE ..........................1-1 IDENTIFICATION ............................. 1-2 INSTALLATION............................2-1 UNPACKING .............................. 2-1 LOCATION ..............................2-1 MOUNTING ............................... 2-1 POWER SOURCE ............................2-1 CONNECTIONS (REFER TO DRAWINGS IN BACK OF MANUAL) ..........2-1 2.5.1... -
Page 6: Introduction
ARR Series Three Phase, Six Pulse SCR Charger Introduction 1. INTRODUCTION 1.1 PURPOSE AND USE ® The purpose of the UNIPOWER AutoReg battery charger is the conversion of AC power to DC power for the proper maintenance of a battery in the fully charged condition. -
Page 7: Identification
ARR Series Three Phase, Six Pulse SCR Charger Introduction ® The internal arrangement of the typical model of the AutoReg charger is given on the drawings in the back of this manual. This is shown to aid in the location of the more common adjustment points and terminal points in the charger. -
Page 8: Installation
ARR Series Three Phase, Six Pulse SCR Charger Installation 2. INSTALLATION 2.1 UNPACKING Unpack carefully to avoid marring the case or damaging the equipment. Make sure that no small parts are mislaid or thrown away with the packing material. If you are not going to use the equipment immediately, store it in a dry place and protect it from accidental damage. - Page 9 ARR Series Three Phase, Six Pulse SCR Charger Installation Follow carefully this procedure for making AC and DC connections to the charger: Place the AC circuit breaker in the “OFF” position. The battery should remain disconnected and the DC circuit breaker placed in the “OFF” position.
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Page 10: Cabinet Dimensions
ARR Series Three Phase, Six Pulse SCR Charger Installation 2.5.1 Cabinet Dimensions CABINET SERIES 1329 28” 26.5” 20” 14” 58” 41” 9.875” 2.625” 3” 2.5” 2010 36” 34.5” 17” 17” 78” 15” 4” RS-420, Rev. 7... - Page 11 ARR Series Three Phase, Six Pulse SCR Charger Installation CABINET DC OUTPUT INPUT Model Series Shpg. Wt. Current Voltage Cells Current (lbs.) (amps) Adj. (amps.) Range ARR130HK50 1329 28/14 120-145 56-64 ARR130HK75 1329 42/21 120-145 56-64 ARR130HK100 1329 54/27 120-145...
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Page 12: Preliminary Adjustments
ARR Series Three Phase, Six Pulse SCR Charger Installation 2.5.2 Preliminary Adjustments All adjustments are factory set. The settings are indicated by the red card (pictured here) attached on the inside front of the charger. However, you may wish to change some of the following settings to fit your particular battery. (This chart, shown below, shows the proper float and equalize voltages for the different battery types. -
Page 13: Equalize Voltage Adjustment
Any adjustments above 125% of the rated output should be made by a UNIPOWER service personnel. If the current limit setting is changed without authorization by UNIPOWER warranty will become null and void. -
Page 14: High Voltage Shutdown
ARR Series Three Phase, Six Pulse SCR Charger Installation 2.5.6 High Voltage Shutdown The high voltage shutdown is designed to operate up if the charger output goes to high voltage. There are two different high voltage shutdown system. One system uses a latching relay and the other system uses a shunt trip curcuit breaker on the input of the charger. - Page 15 ARR Series Three Phase, Six Pulse SCR Charger Installation Once activated the high voltage shutdown is reset by moving the ac circuit breaker operator from the “tripped” position to the “off” position and then to the “on” position. This will restart the charger. If the breaker trips again, check for the cause of the high voltage condition.
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Page 16: Operation
ARR Series Three Phase, Six Pulse SCR Charger Operation 3. OPERATION 3.1 STARTING AND STOPPING After the charger has been installed and the connections made, to activate the unit, simply close the DC circuit breaker (move DC switch to “ON” position). - Page 17 ARR Series Three Phase, Six Pulse SCR Charger Operation The phase controlling circuit consists of three printed circuit boards (control boards B). Each board controls a pair of SCR’s in a rectifier unit. The purpose of these boards is to form pulses that will turn on the SCR’s at the proper time.
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Page 18: Routine Maintenance
ARR Series Three Phase, Six Pulse SCR Charger Routine Maintenance 4. ROUTINE MAINTENANCE CAUTION: The charger will have live terminals unless both the AC power source and the battery are disconnected. Be careful, to avoid electric shocks and burns. Ventilation is of prime importance. Check the area around the charger; be sure that nothing interferes with the free flow of air. -
Page 19: Corrective Maintenance
ARR Series Three Phase, Six Pulse SCR Charger Corrective Maintenance 5. CORRECTIVE MAINTENANCE 5.1 VOLTAGE CHECKPOINTS When there is no DC output on the charger, check the following list for possible failure points in the charger. (The schematic given on page 10 indicates points where a voltage reading should be taken. The chart on the schematic lists the proper voltages to be found at each point.) -
Page 20: Voltage Checkpoint Schematic (Generalized)
ARR Series Three Phase, Six Pulse SCR Charger Corrective Maintenance 5.3 VOLTAGE CHECKPOINT SCHEMATIC (GENERALIZED) RS-420, Rev. 7... -
Page 21: Specific Problem Chart
ARR Series Three Phase, Six Pulse SCR Charger Corrective Maintenance 5.4 SPECIFIC PROBLEM CHART PROBLEM POSSIBLE CAUSES SOLUTION A. No Voltage (E) at power 1. Open AC circuit breaker. a. Close AC circuit breaker. transformer secondary (sec.) 2. Open winding (s) on power b. - Page 22 ARR Series Three Phase, Six Pulse SCR Charger Corrective Maintenance PROBLEM POSSIBLE CAUSES SOLUTION Input Should be ± 10% of Nameplate F. Low Output Voltage 1. Low AC Input Voltage Adjustable Within 10% of a. Unit Connected for 240 Volts AC Voltages.
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Page 23: Instruction Notes
ARR Series Three Phase, Six Pulse SCR Charger Corrective Maintenance PROBLEM POSSIBLE CAUSES SOLUTION J. Normal Operation except 1. Defective Card - MBC-1970-1 a. With ohmmeter, check diode D2 or D12 unit does not current limit. for open. (See 5.4.6.) b. - Page 24 ARR Series Three Phase, Six Pulse SCR Charger Corrective Maintenance cathode for the other diode will be the other anode of the rectifier stack), and a very high resistance from cathode to anode. A shorted diode will show no or very low resistance both ways. An open diode will show a very high resistance both ways.
- Page 25 ARR Series Three Phase, Six Pulse SCR Charger Corrective Maintenance 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. RS-420, Rev. 7...
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Page 26: Checking The Current Transformer
ARR Series Three Phase, Six Pulse SCR Charger Corrective Maintenance 5.5.3 Checking the Current Transformer First make sure all the leads and cables connected to the current transformer are making good contact. If the connections are good, then disconnect the outer leads (terminals may be marked 1 and 3 on the transformer itself), and with an ohmmeter check the resistance between terminals 1 and 3. -
Page 27: Checking Of Printed Circuit Control Cards
ARR Series Three Phase, Six Pulse SCR Charger Corrective Maintenance connection will be on the bottom. If the red dot is to the left of center, the positive terminal connection will be on the top. 5.5.6 Checking of Printed Circuit Control Cards Before taking the printed circuit cards from the charger, open AC &... - Page 28 ARR Series Three Phase, Six Pulse SCR Charger Corrective Maintenance A good diode will read some resistance one way and infinite resistance the other way when the test probes of the ohmmeter (use scale X1000) are applied. A shorted diode will read no resistance both ways. An open diode will read infinite resistance both ways.
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Page 29: Circuit Descriptions
ARR Series Three Phase, Six Pulse SCR Charger Circuit Descriptions 6. CIRCUIT DESCRIPTIONS 6.1 BASIC CONTROL The secondary winding of the auxiliary voltage transformer (AXF) supplies the AC voltage to a full-wave rectifier composed of diodes D21, D22, D23 and D24 in the control circuit. This DC voltage is then filtered by capacitors C23 and C24, and regulated by resistors R23 and R24 and zeners Z21 and Z22. - Page 30 ARR Series Three Phase, Six Pulse SCR Charger Circuit Descriptions The opposite reaction occurs when the output voltage increases, that is, Q13 is turned off. This turns Q11 full on and results in decreasing charger output. The current limit resistor (RCL) provides a constant load for the CT also limits the current limit adjustment range.
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Page 31: Control Board Schematics
ARR Series Three Phase, Six Pulse SCR Charger Circuit Descriptions 6.2 CONTROL BOARD SCHEMATICS RS-420, Rev. 7... -
Page 32: Control Board Parts List
ARR Series Three Phase, Six Pulse SCR Charger Circuit Descriptions 6.3 CONTROL BOARD PARTS LIST Note: Items on Board #1 and #2 are denoted by preceding the component number with a 1 or 2. (Example: Q11 is on board #1: Q21 is on board #2.) MBC-1970-1 (“A”... - Page 33 ARR Series Three Phase, Six Pulse SCR Charger Circuit Descriptions MBC-1971-2 (“B” Board) Part No. Q21, 22 Transistor, 2N2219A, NPN JS00407 D21 to 218 Diode , 1 A, 400 PIV, 1N4004 JS00500 Diode, Zener, 18V, 5%, 5W JS00762 Diode, Zener, 20V, 5%, 1N5357B JS00444 Z23, 24, 25, &...
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Page 34: Control Board "A" (Mbc01970-1)
ARR Series Three Phase, Six Pulse SCR Charger Circuit Descriptions 6.4 CONTROL BOARD "A" (MBC01970-1) 6.5 CONTROL BOARD “B” (MBC01971-2) RS-420, Rev. 7... -
Page 35: Inter-Phase Balance Board
ARR Series Three Phase, Six Pulse SCR Charger Circuit Descriptions 6.6 INTER-PHASE BALANCE BOARD RS-420, Rev. 7... - Page 36 ARR Series Three Phase, Six Pulse SCR Charger Circuit Descriptions The “Soft-Start” circuit consists of capacitors C11 & 14, diode D14, resistors R112, 114, 119, & 120, and transistor Q14. On turn-on, C14 is instantly charged to full voltage. This decreases the base voltage of Q13 which turns off and increases the base voltage of Q11.
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Page 37: Accessories And Optional Equipment
ARR Series Three Phase, Six Pulse SCR Charger Accessories & Optional Equipment 7. ACCESSORIES AND OPTIONAL EQUIPMENT Thirty millivolt filtering reduces the AC ripple voltage. Voltage alarms sense and signal low and high DC voltages in the charger and the batteries. - Page 38 PROPRIETARY INFORMATION NOT TO BE COPIED, USED, TRANSMITTED, OR DISCLOSED WITHOUT PRIOR WRITTEN PERMISSION FROM UNIPOWER, LLC.
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