Unipower ARR Series User manual

ARR SERIES
THREE PHASE,
SIX PULSE
SCR CHARGER
PRODUCT MANUAL
RS-420, Rev. 7
UNIPOWER, LLC
65 Industrial Park Rd
Dunlap, TN 37327
Phone: [phone]
Toll Free: 1-800-440-3504
Web site – www.unipowerco.com

ARR Series Three Phase, Six Pulse SCR Charger Front Matter
RS-420, Rev. 7 i
RECEIVING INSTRUCTIONS
&
GENERAL EQUIPMENT INFORMATION
Please Note: For your protection, the following information and the product manual should be read and
thoroughly understood before unpacking, installing, or using the equipment.
UNIPOWER, LLC presents all equipment to the delivering carrier securely packed and in perfect
condition. Upon acceptance of the package from us, the delivering carrier assumed responsibility for its
safe arrival to you. Once you receive the equipment, it is your responsibility to document any damage the
carrier may have inflicted, and to file your claim promptly and accurately.
1. PACKAGE INSPECTION
1.1 Examine the shipping crate or carton for any visible damage: punctures, dents, and any other signs of
possible internal damage.
1.2 Describe any damage or shortage on the receiving documents, and have the carrier sign their full name.
1.3 If your receiving freight bill notes that a Tip-N-Tell is attached to your freight, locate it. If the Tip-N-Tell
arrow has turned even partially blue, this means the freight has been tipped in transport. Make 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 careful not
to discard any equipment, parts, or manuals. If any damage is detected, call the delivering carrier to
determine appropriate action. They may require an inspection.
*SAVE ALL SHIPPING MATERIAL FOR THE INSPECTOR TO SEE!
2.2 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.
2.3 If repair is necessary, we will invoice you for the repair so that you may submit the bill to the delivering
carrier with your claim form.
2.4 It is your responsibility to file a claim with the delivering carrier. Failure to properly file a claim for
shipping damages may void warranty service for any physical damages later reported for repair.
3. HANDLING
Equipment can be universally heavy or top-heavy. Use adequate humanpower or equipment for handling.
Until the equipment is securely mounted, be careful to prevent the equipment from being accidentally
tipped over.

ARR Series Three Phase, Six Pulse SCR Charger Front Matter
RS-420, Rev. 7 ii
4. 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.
5. 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.
6. SPARE PARTS
To minimize downtime during installation or operation, we suggest you purchase spare fuses, circuit
boards and other recommended components as listed on the Recommended Spare Parts List in the back of
the product manual. If nothing else, we strongly recommend stocking spare fuses for all systems.
PRODUCT SUPPORT
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:
UNIPOWER, LLC
65 Industrial Park Rd
Dunlap, TN 37327
United States
Manufacturing facility:
UNIPOWER Slovakia SRO
ZLATOVSKA 1279
Business Center 22
91105 Trencin, Slovakia
Phone: [phone]
Toll Free: 1-800-440-3504
Web site – www.unipowerco.com
When contacting UNIPOWER, please be prepared to provide:
1. The product model number, spec number, S build number, and serial number - see the equipment nameplate
on the front panel
2. Your company’s name and address
3. Your name and title
4. The reason for the contact
5. If there is a problem with product operation:
•Is the problem intermittent or continuous?
•What revision is the firmware?
•What actions were being performed prior to the appearance of the problem?
•What actions have been taken since the problem occurred?

ARR Series Three Phase, Six Pulse SCR Charger Front Matter
RS-420, Rev. 7 iii
REVISION HISTORY
REV DESCRIPTION
CHECKED/APPROVED
& DATE
7 See PCO 45405 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
DISCLAIMER
Data, descriptions, and specifications presented herein are subject to revision by UNIPOWER, LLC without
notice. While such information is believed to be accurate as indicated herein, UNIPOWER, LLC makes no
warranty and hereby disclaims all warranties, express or implied, with regard to the 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, express, implied, or statutory, including
any warranty of merchantability, any warranty of fitness for a particular purpose, and any implied warranties
otherwise arising from course of dealing or usage of trade. The user is solely responsible for determining the
suitability of the product(s) featured herein for user’s intended purpose and in user’s specific application.
Throughout the remainder of this manual, “UNIPOWER” will mean “UNIPOWER, LLC.”
PERSONNEL REQUIREMENTS
Installation, setup, operation, and servicing of this equipment should be performed by qualified persons
thoroughly familiar with this Product Manual and Applicable Local and National Codes. A copy of this manual is
included with the equipment shipment.

ARR Series Three Phase, Six Pulse SCR Charger Front Matter
RS-420, Rev. 7 iv
TABLE OF CONTENTS
1. INTRODUCTION..................................................................................................................................... 1-1
1.1 PURPOSE AND USE ................................................................................................................................. 1-1
1.2 IDENTIFICATION ..................................................................................................................................... 1-2
2. INSTALLATION....................................................................................................................................... 2-1
2.1 UNPACKING.............................................................................................................................................. 2-1
2.2 LOCATION................................................................................................................................................. 2-1
2.3 MOUNTING ............................................................................................................................................... 2-1
2.4 POWER SOURCE ...................................................................................................................................... 2-1
2.5 CONNECTIONS (REFER TO DRAWINGS IN BACK OF MANUAL) .................................................. 2-1
2.5.1 Cabinet Dimensions................................................................................................................................. 2-3
2.5.2 Preliminary Adjustments.......................................................................................................................... 2-5
2.5.3 Float Voltage Adjustment........................................................................................................................ 2-5
2.5.4 Equalize Voltage Adjustment.................................................................................................................. 2-6
2.5.5 Current Limit Adjustment........................................................................................................................ 2-6
2.5.6 High Voltage Shutdown........................................................................................................................... 2-7
3. OPERATION............................................................................................................................................. 3-1
3.1 STARTING AND STOPPING.................................................................................................................... 3-1
3.2 METERS ..................................................................................................................................................... 3-1
3.3 FLOAT-EQUALIZE OPERATION............................................................................................................ 3-1
3.4 DESCRIPTION OF OPERATION.............................................................................................................. 3-1
3.4.1 Block Diagram......................................................................................................................................... 3-1
4. ROUTINE 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 Dimension section).................................................................................. 5-1
5.3 VOLTAGE CHECKPOINT SCHEMATIC (GENERALIZED)................................................................. 5-2
5.4 SPECIFIC PROBLEM CHART.................................................................................................................. 5-3
5.5 INSTRUCTION NOTES............................................................................................................................. 5-5
5.5.1 Checking of Potentiometers..................................................................................................................... 5-5
5.5.2 Checking of Diodes and Silicon Controlled Rectifiers............................................................................ 5-5
5.5.3 Checking the Current Transformer.......................................................................................................... 5-8
5.5.4 Checking the Auxiliary Transformer....................................................................................................... 5-8
5.5.5 Checking DC Filter Capacitors................................................................................................................ 5-8
5.5.6 Checking of Printed Circuit Control Cards.............................................................................................. 5-9
6. CIRCUIT DESCRIPTIONS..................................................................................................................... 6-1
6.1 BASIC CONTROL...................................................................................................................................... 6-1
6.2 CONTROL BOARD SCHEMATICS......................................................................................................... 6-3
6.3 CONTROL BOARD PARTS LIST............................................................................................................. 6-4
6.4 CONTROL BOARD "A" (MBC01970-1) .................................................................................................. 6-6
6.5 CONTROL BOARD “B” (MBC01971-2) .................................................................................................. 6-6
6.6 INTER-PHASE BALANCE BOARD......................................................................................................... 6-7
7. ACCESSORIES AND OPTIONAL EQUIPMENT ............................................................................... 7-1

ARR Series Three Phase, Six Pulse SCR Charger Introduction
RS-420, Rev. 7 1-1
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.
The battery is maintained in the fully charged state, because the AutoReg®will continually deliver a DC output
equal to the given load, provided that load does not exceed the DC output rating indicated on the nameplate.
The battery then is said to be in float service. Since, unless there is an AC power failure, the 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
rating on the nameplate, and 5% above or below the AC frequency rating on the nameplate, the charger will
maintain a steady DC output voltage within ±½%, for any load from 0% to 100%. The efficiency of the charger
is shown by the following graph.
On the AutoReg®charger, the float and equalize voltages can be adjusted within the range of 10% above or below
the nominal voltages, which are factory set.
The AutoReg®charger has incorporated into its control circuitry a current-limit system. This is factory set at
115% of the rated output. The following graph shows the effectiveness of the current-limit.

ARR Series Three Phase, Six Pulse SCR Charger Introduction
RS-420, Rev. 7 1-2
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.
1.2 IDENTIFICATION
All UNIPOWER AutoReg®chargers are equipped with a full identification nameplate, as shown in the example
below.
NOTE: When requesting information, or ordering spare parts, please specify the Model No. and Serial No. of the
charger. This information will speed your request.
AC VOLTS 480 PH 3
HZ 60
AC AMPS 27
DC VOLTS 132 CELLS 60
DC AMPS 100
MODEL NO. ARR130K100 SPEC. S04545
SER.NO. FPS06 16558 °T C 50

ARR Series Three Phase, Six Pulse SCR Charger Installation
RS-420, Rev. 7 2-1
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.
2.2 LOCATION
The equipment should be installed in a convenient, dry place, protected from overhead drip. Adequate ventilation
is required for proper functioning. It is recommended that 3 to 6 inches of free air space be provided on each side
of the charger.
The equipment can be operated in elevated temperatures for some time without harm. However, if the
charger is to be in continuous operation in temperatures above 50°C (122°F), it is recommended that the charger
be located in an air conditioned room. In temperatures below -20°C (-4°F), heaters should be installed.
The charger, like all electrical equipment, should not be mounted where it would be subjected to extreme
vibration which could possibly cause a 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 on page 4, for the cabinet series number of your
model.
2.4 POWER SOURCE
To function properly, the AC supply voltage (i.e. the AC input line) must be within the limits of ±10% of the
voltage rating stamped on the nameplate; and ±5% of the frequency rating (frequency is indicated by Hertz on
nameplate).
The chart on page 4 list the possible AC supply voltages and current draws for all standard models of the ARR
AutoReg®charger. The cabinet series is also indicated on this chart, as well as the DC voltage range.
If the source voltage is other than the rated value, or if the sustained AC voltage fluctuations are beyond the range
of ±10%, contact the nearest sales office of UNIPOWER.
2.5 CONNECTIONS (REFER TO DRAWINGS IN BACK OF MANUAL)
The charger input and output connection points are reached through the hinged front or removable top panel.
The AC input connections are made to the AC terminal points on the terminal board. The DC output connections
are located opposite the AC connection points on the terminal board. Both the AC and DC connection points are
clearly marked on the board.

ARR Series Three Phase, Six Pulse SCR Charger Installation
RS-420, Rev. 7 2-2
Follow carefully this procedure for making AC and DC connections to the charger:
1. Place the AC circuit breaker in the “OFF” position.
2. The battery should remain disconnected and the DC circuit breaker placed in the “OFF” position.
3. Place the “NORMAL-EQUALIZE” toggle switch in the “NORMAL” position.
4. Check the card (pictured above) supplied with the charger to see if the transformer primary terminal
block is connected in the proper sequence for your incoming AC line voltage.
If you have a different line voltage, and the transformer primary is not connected in the proper
sequence, refer to the INSTALLER’S DIAGRAM. Then, reconnect the transformer primary terminal
block as indicated. NOTE: If your charger is not equipped with an AC fuse, the AC circuit breaker
must be changed to meet the proper current and voltage ratings whenever the AC input is reconnected.
5. Connect the incoming AC leads to the AC terminal blocks located on 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 the
terminal board. Make sure all connections are tight, and that the correct polarity has been observed (i.e.
Positive to Positive and Negative to Negative).
7. CLOSE THE DC CIRCUIT BREAKER. This energizes the charger filter capacitors connected across
the DC output. The DC voltmeter on the front panel should read the battery voltage and ammeter
should read zero or slightly above.
8. Close the AC circuit breaker. The DC ammeter on the front panel will register the current flow and the
charger voltage will gradually increase as your battery charges to the floating voltage level which was
set at the factory.
9. (Acceptable alternate sequence) Close the ac circuit breaker. The charger output voltage slowly rises to
the float voltage set point. The filter capacitors will be charged by the charger.
10. Close the dc breaker. The dc ammeter will register the current flow to the load and battery.
It is possible to damage the rectifier stack or blow the anode fuses if the above procedures are not followed.

ARR 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”
4”