Unipower ARE Series User manual

ARE SERIES
SINGLE-PHASE INPUT
Installation and Operating
Instructions for Standby
Power Chargers
PRODUCT MANUAL
RS-759, Rev. 11
UNIPOWER, LLC
65 Industrial Park Rd
Dunlap, TN 37327
Phone: [phone]
Toll Free: 1-800-440-3504
Web site – www.unipowerco.com

ARE Series Chargers
RS-759, Rev. 11 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.

ARE Series Chargers
RS-759, Rev. 11 ii
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.
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.

ARE Series Chargers
RS-759, Rev. 11 iii
REVISION HISTORY
REV DESCRIPTION
CHECKED/APPROVED
& DATE
11
See PCO 45405
CJM / 8-8-19
PRODUCT MANUAL SUMMARY
This product manual provides installation, operation, maintenance, and troubleshooting procedures for the
UNIPOWER ARE Series Chargers.
Thank you for purchasing an ARE Series Charger. We at UNIPOWER are proud of the quality of our products
and welcome any suggestions to further improve our design to fit your needs.
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.

ARE Series Chargers
RS-759, Rev. 11 iv
TABLE OF CONTENTS
INTRODUCTION ................................................................................................................................................VII
1. RECEIVING AND INSTALLATION............................................................................................................ 1-1
1.1 RECEIVING.............................................................................................................................................. 1-1
1.2 IDENTIFICATION ................................................................................................................................... 1-1
1.3 UNPACKING AND HANDLING............................................................................................................ 1-1
1.4 STORAGE................................................................................................................................................. 1-1
1.5 LOCATION............................................................................................................................................... 1-1
1.6 MOUNTING.............................................................................................................................................. 1-1
1.7 POWER SOURCE..................................................................................................................................... 1-2
1.8 CONNECTIONS....................................................................................................................................... 1-2
1.9 GROUNDING INSTRUCTIONS ............................................................................................................. 1-3
1.10INSTALLER’S DIAGRAM...................................................................................................................... 1-3
1.11PRODUCT SUPPORT.............................................................................................................................. 1-4
2. EQUIPMENT OPERATION AND MAINTENANCE ................................................................................. 2-1
2.1 EQUIPMENT OPERATION..................................................................................................................... 2-1
2.1.1 AC Turn-On Procedure ................................................................................................................ 2-1
2.1.2 Alternate AC Turn-On Procedure ................................................................................................ 2-1
2.1.3 AC Turn-Off Procedure................................................................................................................ 2-1
2.1.4 Float/Equalize Settings................................................................................................................. 2-1
2.2 FLOAT VOLTAGE ADJUSTMENT ....................................................................................................... 2-2
2.3 EQUALIZE VOLTAGE ADJUSTMENT................................................................................................. 2-2
2.4 CURRENT LIMIT ADJUSTMENT ......................................................................................................... 2-2
2.5 COARSE VOLTAGE ADJUSTMENT (24 AND 48 VOLT UNITS ONLY).......................................... 2-3
2.6 HIGH VOLTAGE SHUTDOWN (HVSD)............................................................................................... 2-3
2.7 AC POWER FAILURE ALARM RELAY (ACPFAR)............................................................................ 2-3
2.8 ROUTINE MAINTENANCE.................................................................................................................... 2-3
3. TROUBLESHOOTING................................................................................................................................... 3-1
3.1 GENERAL DESCRIPTION OF OPERATION........................................................................................ 3-1
3.2 TROUBLESHOOTING CHART.............................................................................................................. 3-2
3.3 CHECKING COMPONENTS................................................................................................................... 3-3
4. DRAWINGS...................................................................................................................................................... 4-1
4.1 ASSEMBLY AND SCHEMATIC DIAGRAM FOR SINGLE-PHASE “ARE” HIGH VOLTAGE
SHUTDOWN MBC-3970-UNIT VOLTAGE......................................................................................... 4-31
4.1.1 Instructions................................................................................................................................. 4-31
5. OPTIONAL ALARMS AND ACCESSORIES.............................................................................................. 5-1
5.1 LIGHTNING ARRESTER........................................................................................................................ 5-1
5.2 BLOCKING DIODE................................................................................................................................. 5-1
5.3 EQUALIZE TIMER.................................................................................................................................. 5-1
5.4 HIGH AND LOW VOLTAGE ALARM RELAYS DESCRIPTION....................................................... 5-2
5.5 HIGH AND LOW VOLTAGE ALARM .................................................................................................. 5-3
5.5.1 Connections.................................................................................................................................. 5-3
5.5.2 Adjustment ................................................................................................................................... 5-3
5.6 HIGH VOLTAGE ALARM WITH ADJUSTABLE TIME DELAY....................................................... 5-4
5.6.1 High Voltage Alarm Connection Diagram................................................................................... 5-4
5.6.2 Connections.................................................................................................................................. 5-4
5.6.3 Operation...................................................................................................................................... 5-4
5.6.4 Adjustment Procedure.................................................................................................................. 5-4
5.6.5 Specifications ............................................................................................................................... 5-4
5.7 LOW VOLTAGE ALARM WITH ADJUSTABLE TIME DELAY........................................................ 5-5
5.7.1 Low Voltage Alarm Connection Diagram ................................................................................... 5-5
5.7.2 Connections.................................................................................................................................. 5-5

ARE Series Chargers
RS-759, Rev. 11 v
5.7.3 Operation...................................................................................................................................... 5-5
5.7.4 Adjustment Procedure.................................................................................................................. 5-5
5.7.5 Specifications Same as High Voltage Alarm With Time Delay ................................................. 5-5
5.8 NO CHARGE ALARM RELAY AND LOAD SHARING...................................................................... 5-6
5.8.1 Description................................................................................................................................... 5-6
5.8.1.1 No Charge Alarm (Low Current Alarm).................................................................................. 5-6
5.8.1.2 Load Sharing............................................................................................................................ 5-7
5.8.2 Connections.................................................................................................................................. 5-7
5.8.3 Adjustment ................................................................................................................................... 5-7
5.8.4 For Two Power Supplies.............................................................................................................. 5-7
5.8.5 For More Than Two Power Supplies ........................................................................................... 5-7
5.8.6 Operational Notes......................................................................................................................... 5-7
5.8.7 Specifications ............................................................................................................................... 5-7
5.9 GROUND DETECTION ALARM RELAY (WITH LIGHTS).............................................................. 5-10
5.9.1 Description................................................................................................................................. 5-10
5.9.2 Connections................................................................................................................................ 5-10
5.10GROUND DETECTION VOLTMETER SWITCH ............................................................................... 5-10
5.10.1 Description................................................................................................................................. 5-10
5.10.2 Operation.................................................................................................................................... 5-10
5.11GROUND DETECTION LIGHTS.......................................................................................................... 5-10
5.11.1 Description................................................................................................................................. 5-10
5.11.2 Operation.................................................................................................................................... 5-10
5.12EQUALIZE TIMER SETTING INFORMATION.................................................................................. 5-16
6. SPECIFICATIONS “ARE” SINGLE-PHASE RECTIFIERS..................................................................... 6-1
6.1 GENERAL................................................................................................................................................. 6-1
6.2 DC OUTPUT RATINGS........................................................................................................................... 6-1
6.2.1 Current and Voltage Ratings........................................................................................................ 6-1
6.2.2 Regulation .................................................................................................................................... 6-1
6.3 AC INPUT RATINGS............................................................................................................................... 6-1
6.4 STANDARD FEATURES ........................................................................................................................ 6-1
6.5 ENVIRONMENTAL RATINGS .............................................................................................................. 6-2
6.6 OPTIONAL EQUIPMENT ....................................................................................................................... 6-2
6.7 “ARE” SINGLE-PHASE GENERAL SPECIFICATIONS ...................................................................... 6-2

ARE Series Chargers
RS-759, Rev. 11 vi
FIGURES
FIGURE 3-1: BLOCK DIAGRAM FOR A TYPICAL “ARE” POWER SUPPLY.............................................. 3-1
FIGURE 4-1: MBC-3410B CABINET ASSEMBLY – 12 ¼” CABINET............................................................ 4-1
FIGURE 4-2: MBC-3420B CABINET ASSEMBLY – 24 ½” CABINET............................................................ 4-5
FIGURE 4-3: MBC-3420B CABINET ASSEMBLY – 24 ½” CABINET............................................................ 4-8
FIGURE 4-4: MBC-3700B CABINET ASSEMBLY – 30” CABINET................................................................ 4-9
FIGURE 4-5: MBC-3716B CABINET ASSEMBLY – 36” CABINET.............................................................. 4-12
FIGURE 4-6: DIMENSIONS FOR MBC-3410B CABINET 12 ¼” HIGH........................................................ 4-17
FIGURE 4-7: DIMENSIONS FOR MBC-3420B CABINET 24 ½” HIGH........................................................ 4-17
FIGURE 4-8: DIMENSIONS FOR MBC-3700B CABINET 30” HIGH............................................................ 4-18
FIGURE 4-9: DIMENSIONS FOR MBC-3716B CABINET 36” HIGH............................................................ 4-18
FIGURE 4-10: CONNECTION DIAGRAM FOR “ARE” 12-INCH AND 24-INCH CABINETS (120/208/240
VAC) .................................................................................................................................................................... 4-19
FIGURE 4-11: CONNECTION DIAGRAM FOR “ARE” 24-INCH CABINET (208/240/480 VAC) .............. 4-20
FIGURE 4-12: CONNECTION DIAGRAM FOR “ARE” 30-INCH CABINET (120/208/240 VAC) .............. 4-21
FIGURE 4-13: CONNECTION DIAGRAM FOR “ARE” 30-INCH CABINET (208/240/480 VAC) .............. 4-22
FIGURE 4-14: CONNECTION DIAGRAM 36-INCH CABINET (120/208/240 VAC).................................... 4-23
FIGURE 4-15: CONNECTION DIAGRAM FOR “ARE” 36-INCH CABINET (208/240/480 VAC) .............. 4-24
FIGURE 4-16: SCHEMATIC DIAGRAM FOR “ARE” 12 AND 24 INCH CABINET ................................... 4-25
FIGURE 4-17: SCHEMATIC DIAGRAM FOR “ARE” 24 INCH CABINET (208/240/480 VAC).................. 4-26
FIGURE 4-18: SCHEMATIC DIAGRAM FOR “ARE” 30 INCH CABINET (120/208/240VAC)................... 4-27
FIGURE 4-19: SCHEMATIC DIAGRAM FOR “ARE” 30 INCH CABINET (208/240/480VAC)................... 4-28
FIGURE 4-20: SCHEMATIC DIAGRAM FOR “ARE” 36-INCH CABINET (120/208/240 VAC) ................. 4-29
FIGURE 4-21: SCHEMATIC DIAGRAM FOR “ARE” 36-INCH CABINET (208/240/480 VAC) ................. 4-30
FIGURE 4-22: SCHEMATIC DIAGRAM FOR “ARE” CONTROL BOARD.................................................. 4-32
FIGURE 4-23: ASSEMBLY DIAGRAMS FOR “ARE” CONTROL BOARD.................................................. 4-33
FIGURE 5-1: CIRCUIT BOARD LAYOUT......................................................................................................... 5-2
FIGURE 5-2: CONNECTION DIAGRAM “ARE” HIGH AND LOW VOLTAGE ALARM............................. 5-2
FIGURE 5-3: HIGH OR LOW DC VOLTAGE ALARM WITH ADJUSTABLE TIME DELAY...................... 5-6
FIGURE 5-4:NO CHARGE ALARM WITH LOAD SHARING CIRCUIT BOARD.......................................... 5-9
FIGURE 5-5: CONNECTION DIAGRAM “ARE” NO CHARGE ALARM WITH LOAD SHARING............. 5-9
FIGURE 5-6: CONNECTION DIAGRAM “ARE” GROUND DETECTION ALARM.................................... 5-11
FIGURE 5-7: GROUND DETECTION ALARM RELAY................................................................................. 5-11
FIGURE 5-8: GROUND DETECTION ALARM SCHEMATIC DIAGRAM ................................................... 5-12
FIGURE 5-9:GROUND DETECTION (GROUND LIGHTS ONLY, KBC-4210) ............................................ 5-12
FIGURE 5-10: ASSEMBLY AND CONNECTION DIAGRAM GROUND DETECTION LIGHTS WITH
SWITCH............................................................................................................................................................... 5-13
FIGURE 5-11: GROUND LIGHTS WITH CENTER OFF MOMENTARY...................................................... 5-13
FIGURE 5-12: ASSEMBLY AND CONNECTION DIAGRAM ARE SINGLE-PHASE VOLTMETER
GROUND DETECTION SWITCH ..................................................................................................................... 5-13
FIGURE 5-13: LIGHTNING ARRESTER CONNECTIONS............................................................................. 5-14
FIGURE 5-14: BLOCKING DIODE ASSEMBLY............................................................................................ 5-15
FIGURE 5-15: ASSEMBLY AND CONNECTION DIAGRAM EQUALIZE TIMER..................................... 5-16
FIGURE 5-16: ASSEMBLY AND CONNECTION DIAGRAM EQUALIZE TIMER (CONTINUE)............. 5-16
TABLES
TABLE 1-1: LIST OF STANDARD MODELS.................................................................................................... 1-3
TABLE 2-1: TYPICAL FLOAT/EQUALIZE VOLTAGES................................................................................. 2-1
TABLE 4-1: 24/48V DC CONTROL BOARD ................................................................................................... 4-34
TABLE 4-2: 130V DC C12 CONTROL BOARD............................................................................................... 4-34

ARE Series Chargers
RS-759, Rev. 11 vii
INTRODUCTION
The purpose of this manual is to instruct the user of this equipment on the handling, installation, operation, and
maintenance of the equipment. Sections on theory of operation and troubleshooting, in addition to schematic and
wiring diagrams provide adequate information for maintenance personnel to service the equipment.
The replacement parts list can be used as a guide for a stock parts program, if so desired, or to simplify and
expedite the procurement of needed parts.
Sections on available models, ratings, and options will aid in the selection of the proper equipment for future
applications.
First-class materials and workmanship were utilized in the manufacture and production of this equipment. It was
produced under strict quality control supervision, carefully inspected, and thoroughly tested, before shipment. It
will give many years of productive and trouble-free service.

ARE Series Chargers
RS-759, Rev. 11 1-1
1. RECEIVING AND INSTALLATION
1.1 RECEIVING
This equipment was assembled, tested and packed with care to enable the purchaser to install and place it in
operation with a minimum of time and labor. Immediately upon receiving the equipment, it should be checked
against the memorandum of shipment.
1.2 IDENTIFICATION
All UNIPOWER’ Model ARE power supplies are equipped with a full identification nameplate. When requesting
information, or ordering spare parts, please specify the Model No., Serial No., and Spec. No. of the charger. This
information will speed your request.
1.3 UNPACKING AND HANDLING
The power supply is shipped attached to a wooden skid. This facilitates handling with a lift truck by inserting the
forks under the bottom of the skid. The smallest units are packed inside the carton that is banded to the skid. The
larger units are bolted to the skid and covered by the shipping carton that is banded to the skid. To unpack, cut
the bands (Caution: Do not stand in front of steel bands since they may whip out when cut) and remove
carton from the skid. Next, either remove the unit from the carton or unbolt the unit from the skid.
Check shipping carton, before discarding, for the packing slip and other material, which may be contained in it.
Carefully inspect the unit for loosened connections or mountings, dislodged circuit boards, etc., which can occur
during shipping. Report any findings to our nearest sales office.
1.4 STORAGE
If you are not going to use the equipment immediately, store it (fully packed, if possible) in a clean dry place and
protect it from possible damage or overhead drip.
All ARE Series power supplies can be safely stored for up to one year at temperatures ranging from –40 C to +85
C.
1.5 LOCATION
Caution: 130 Volts, 35 and 50A power supplies may have hot surfaces at top and rear of cabinet.
Install so that these surfaces are not likely to be contacted by personnel.
The power supply should be installed in a convenient, cool, clean, dry place, protected from overhead drip. Like
all electrical equipment, it should not be mounted where it would be subjected to extreme vibration, which could
possibly cause a malfunction.
Adequate ventilation is required for proper functioning. The environmental operating limits for the ARE Series
power supplies are:
Ambient temperature: 0 C to 50 C
Relative humidity: 0 to 95%
Altitude: 10,000 ft. (3,000 meters) or less
1.6 MOUNTING
These units may be mounted on walls, relay racks, or floors. All units are furnished with brackets for wall or
relay rack mounting. Optional floor mounting brackets are furnished upon request, as well as extra-wide brackets
for large relay racks.

ARE Series Chargers
RS-759, Rev. 11 1-2
One-fourth (1/4)-inch hardware must be used in all available mounting holes to mount the brackets to the cabinet.
See cabinet dimensions on (Figures 4-6, 4-7, 4-8, & 4-9) for minimum hardware recommendations for mounting
the power supply to the wall, relay rack, or floor.
1.7 POWER SOURCE
The nominal voltage of the AC source to which the equipment is to be connected must be the same as the nominal
voltage for which the equipment input is set. Check the card supplied with the equipment to see if the unit is
connected for your incoming ac line voltage. If it is not, reset the unit following the voltage changeover
instructions on the schematic diagrams Section 4 of this manual.
For the equipment to function properly, the AC supply voltage must be within the following ANSI Standard
Ranges:
Nominal
Voltage Minimum Maximum
120V AC 106V AC 127V AC
208V AC 184V AC 220V AC
240V AC 212V AC 254V AC
480V AC 424V AC 508V AC
Other voltages must be ±10% of the nominal voltage for which the charger is connected. The frequency of the
AC supply must be the specified nominal frequency ±5%.
Table 1-1 lists the AC input currents at rated output for each ARE power supply model.
If the sustained AC voltage fluctuations are outside the specified ranges, contact the Field Service Department of
UNIPOWER.
1.8 CONNECTIONS
Caution: This equipment must be installed by competent electrical personnel, familiar with
both local and national electrical codes.
All connection terminals are reached through the front door. The input and output power connection points are
located on the accessory panel. On large units, the input connection points are located on the back panel. The
optional alarm connection terminal block is located on the bottom screen.
All equipment is furnished with conduit entrances on each side panel. Clear space is provided in the floor area of
the cabinet for those cases when bottom entrance for cables is desirable.
The power supply should be connected to either a fused AC disconnect switch or an AC circuit breaker. Before
selecting the rating of the protective device and the AC and DC cables sizes, check the equipment nameplate or
Table 1-1 of this manual for the rated currents. National Electrical Code (NEC) should be followed in selecting
the cables sizes. The rating of the protective device on the power circuit feeding the unit must equal or exceed
equipment breaker rating.
Caution: Make sure the DC breaker is “OFF” and that the correct polarity (i.e. positive to positive
and negative to negative) is observed when connecting the battery to the power supply. Loads
should be connected to the battery terminals, not the power supply terminals (unless no battery is
used).

ARE Series Chargers
RS-759, Rev. 11 1-3
1.9 GROUNDING INSTRUCTIONS
This power supply should be connected to a grounded, metal, permanent wiring system; or an equipment-
grounding conductor should be run with circuit conductors and connected to the equipment-grounding terminal on
the power supply. Connections to power supply should comply with all local codes and ordinances.
The terminal in the equipment labeled GROUND or GRD is provided for connection of the AC system ground.
Internally, that terminal is connected to the cabinet. The power supply electrical circuits are isolated from ground
so the AC supply must connect to terminals TS1-1 and TS2-2 on all models except the ARE130CE35 and
ARE130CE50, which connects to TS8-1 and TS8-2.
See installer’s diagram.
1.10 INSTALLER’S DIAGRAM
TABLE 1-1: LIST OF STANDARD MODELS
24 – Volt output
Model Input
Volts
AC
Amps
AC
Terminal
Block cap.
AWG
Min. Max.
DC
Amps Cabinet
Recommended
DC cable
size
AWG
DC Circuit
Breakers
Approx.
Ship. Wt.
Lbs. Kgs.
ARE24AC6E
ARE24AC12E
120/208/240
120/208/240
2/1.1/1
4/2.3/2
16 10
16 10
6
6
12
12
14
10
10
20
65 30
72 33
48 – Volt output
Model Input
Volts
AC
Amps
AC
Terminal
Block cap.
AWG
Min. Max.
DC
Amps Cabinet
Recommended
DC cable
size
AWG
DC Circuit
Breakers
Approx.
Ship. Wt.
Lbs. Kgs.
ARE48AC6E
ARE48AC12E
120/208/240
120/208/240
4/2.3/2
7/4/3.5
10 16
16 10
6
12
12
12
14
10
10
20
72 33
95 43
130 – Volt output
Model Input
Volts
AC
Amps
AC
Terminal
Block cap.
AWG
Min. Max.
DC
Amps Cabinet
Recommended
DC cable
Size
AWG
DC Circuit
Breakers
Approx.
Ship. Wt.
Lbs. Kgs.
ARE130AC6F
ARE130AC12F
ARE130AC16F
ARE130AC25F
ARE130AC35F
ARE130CE12F
ARE130CE25F
ARE130CE35F
ARE130CE50F
120/208/240
120/208/240
120/208/240
120/208/240
120/208/240
208/240/480
208/240/480
208/240/480
208/240/480
8.5/5/4
18/10/9
22/13/11
35/20/17
50/29/25
10/8.8/4.4
20/17/8.5
29/25/12.5
40/35/17.5
16 10
16 10
16 10
12 6
12 4
16 10
12 6
12 6
12 6
6
12
16
25
35
12
25
35
50
12
24
24
30
36
24
30
36
36
14
10
10
8
8
10
8
8
4
10
20
20
40
50
20
40
50
70
100 46
170 77
185 84
325 148
460 209
170 77
325 148
460 209
600 273
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     

 
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 


  
 
  




 


ARE Series Chargers
RS-759, Rev. 11 1-4
1.11 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?

ARE Series Chargers
RS-759, Rev. 11 2-1
2. EQUIPMENT OPERATION AND MAINTENANCE
2.1 EQUIPMENT OPERATION
2.1.1 AC Turn-On Procedure
After making all connections to the power supply and making sure they are tight, follow this procedure to
energize the equipment:
1. Place the “Float-Equalize” rocker switch in the “Float” position.
2. Close the DC circuit breaker. The battery will charge the filter capacitors connected across the DC
output. The DC voltmeter on the front panel should read the battery voltage.
*Note: In-rush current may trip the breaker. If so, reclose.
3. Close the AC circuit breaker. The output current will build up gradually due to the “walk-in” or
“soft-start” characteristic of the equipment.
If the equipment is used without a battery, the capacitor will become charged when the AC breaker is closed. In
this instance, both the current and voltage will build up gradually, provided some load is connected.
2.1.2 Alternate AC Turn-On Procedure
After making all connections to the power supply and checking them for tightness use the following procedure to
energize the equipment:
1. Place the float/equalize rocker switch in the float position and set the local/remote switch to local.
2. Close the ac circuit breaker. Wait several seconds for the dc voltage to reach its set point.
3. Close the dc circuit breaker. If inrush of current trips the dc breaker, reset it and proceed. Refer to
drawings in back of manual for location of switches.
2.1.3 AC Turn-Off Procedure
In order to de-energize or turn off the power supply, the following steps need to be followed in the indicated
order: 1. Open the AC circuit breaker.
2. Open the DC circuit breaker.
2.1.4 Float/Equalize Settings
The float and equalize voltage levels are factory set. These settings are indicated by a red card attached on the
inside front of the equipment. However, you may wish to change the settings to fit your particular application.
The table 2-1 shows typical float and equalize voltages on a per cell basis for different types of batteries.
TABLE 2-1: TYPICAL FLOAT/EQUALIZE VOLTAGES
CELL VOLTAGE
BATTERY TYPE
FLOAT
EQUALIZE
LEAD ANTIMONY (1.210 Specific gravity)
LEAD CALCIUM (1.210 Specific gravity)
NICKEL CADMIUM
NICKEL IRON
LEAD-ACID, VALVE-
REGULATED (SEALED)
(1.300 Specified gravity)
(1.290 Specified gravity)
(1.245 Specified gravity
2.15 – 2.17
2.17 – 2.25
1.43
1.50 – 1.55
2.25 – 2.30
2.25 – 2.30
2.17 – 2.22
2.33
2.33
1.55
1.60 – 1.65
**
**
**

ARE Series Chargers
RS-759, Rev. 11 2-2
* Equalize charge is required only if cells have experienced a discharge.
** Additional equalize charging is not recommended after initial equalization.
Consult battery manufacturer for particular recommendations.
2.2 FLOAT VOLTAGE ADJUSTMENT
Caution: Do not attempt to set either float or equalize voltage until the unit is out of the current-limit
mode.
The setting of the float potentiometer “FL” on the instrument panel, determines the float voltage level, provided
the rocker switch, also on the instrument panel, is in the “Float” position.
Turning the potentiometer clockwise increases the float voltage. Turning it counterclockwise decreases the
voltage.
In order to correctly adjust, the float voltage, the battery should be in a fully charged condition with some load
connected. Adjust the float potentiometer only while the equipment is operating.
2.3 EQUALIZE VOLTAGE ADJUSTMENT
Caution: Do not attempt to set either float or equalize voltage until the unit is out of the current limit
mode.
The potentiometer for this adjustment is also on the instrument panel and is labeled “EQ”.
Move the rocker switch to the “Equalize” position. Then with the equipment in operation, as it was during float
voltage adjustment, make the equalize voltage adjustment.
The equalize voltage potentiometer works exactly as the float voltage potentiometer – a clockwise turn increases
voltage; a counter clockwise turn decreases voltage.
The equalize voltage setting will depend upon the type of battery used (refer to chart) and the maximum limiting
voltage of the connected load equipment.
NOTE: If used with lead-calcium alloy grid batteries, (not requiring regular equalizing), the equalize
pot should be adjusted to zero (full CCW) to minimize the possibility of over voltage on the load.
2.4 CURRENT LIMIT ADJUSTMENT
Caution: Operating the equipment at greater than 110% of rating is not recommended for periods
greater than 3-4 hours. The current limit setting should be left at 110% for normal operation.
The current limit is factory set at 110% of the rated output current of the power supply. If a lower current limit
setting is desired, it may be set within the range of 50% and 110% of rated DC current. The setting of the current
limit potentiometer, labeled “CL ADJ” and located on the bottom edge of the control board on the inside of the
door, determines the current limit setting.
Turning the “CL ADJ” clockwise increases the current limit setting, turning it counter clockwise decreases the
setting. To adjust, follow on of the procedures outlined below:
A. If dummy load is available:
1. Increase load until 110% of charger rating is reached.
2. Turn “CL ADJ” slowly counter clockwise until the desired setting is reached. For
example, if 90% setting is desired and the equipment rating is 30 amps, stop when 27
amps is reached.

ARE Series Chargers
RS-759, Rev. 11 2-3
3. Remove dummy load.
B. If dummy load is not available, but some system load is:
1. Open the AC breaker.
2. Allow the battery voltage to drop to about 90% of float voltage. This will discharge
the battery enough to require the equipment to operate in the current limit mode when
it is turned on.
3. Close the AC circuit breaker. The unit should now be operating in the current limit
mode with its output current equal to 110% of rated output.
4. Slowly turn “CL ADJ” counter clockwise until the desired setting is reached.
2.5 COARSE VOLTAGE ADJUSTMENT (24 AND 48 VOLT UNITS ONLY)
Caution: Do not attempt to set either float or equalize voltage until the unit is out of the current limit
mode.
DESCRIPTION: This is normally a factory adjustment and will only be required when a replacement control
board is installed. The coarse voltage adjustment is used to set the minimum float voltage setting and to match
the control board to the voltage rating of the unit. The coarse adjusting potentiometer is located on the right hand
side of the control board as it is mounted on the back of the door. It is turned down at a 45º angle so that it can be
adjusted with the board mounted in place.
ADJUSTMENT: Place the float-equalize switch in the float position. Turn the float potentiometer fully counter
clockwise. With less than 5% load on the unit adjust CP for a DC output voltage of two volts per cell or for the
minimum float range desired. Turn CP counter clockwise to decrease the voltage and clockwise to increase the
voltage. After the coarse adjustment is set, raise the DC output voltage back to the normal float setting of the
battery with the float potentiometer.
2.6 HIGH VOLTAGE SHUTDOWN (HVSD)
Caution: Do not exceed the maximum system bus voltage when setting or checking this alarm.
DESCRIPTION: The high voltage shutdown monitors the DC output voltage and turns the unit off in case of an
unacceptable high voltage condition, protecting both the load and the power supply. The HVSD turns the unit off
by activating a trip coil on the AC input circuit breaker.
ADJUSTMENT: The high voltage shutdown level is set by a potentiometer on the HVSD printed circuit board.
Turning clockwise increases the set point. To check the HVSD setting, place the power supply in equalize,
observe and slowly raise the output voltage until the power supply shuts down. To set the HVSD, first turn
voltage adjust POT fully clockwise. Place the power supply in equalize and adjust the output voltage to the
desired trip level. It may be necessary to use the float potentiometer as well. Slowly turn POT counter clockwise
until the power supply shuts down. Check the setting by following the procedure in the above paragraph.
RESET THE FLOAT AND EQUALIZE POTENTIOMETERS AFTER ADJUSTING ALARMS.
2.7 AC POWER FAILURE ALARM RELAY (ACPFAR)
The AC power failure alarm is a three-pole, double throw, 120 VAC relay connected across the primary of the
power transformer. When AC power is removed, the relay de-energizes and may be used to provide an alarm
signal. Two sets of form C contacts are terminated for use at TS-3. The contacts are rated ten amperes at 125
volts AC, 60 Hz.
2.8 ROUTINE MAINTENANCE
Caution: Before attempting any maintenance, make sure the AC input power is off and the battery is
disconnected from the power supply.

ARE Series Chargers
RS-759, Rev. 11 2-4
1. Ventilation is of prime importance. Check the area around the unit; be sure that nothing interferes
with the free flow of air through the unit.
2. All equipment performs better when clean, since there is better heat dissipation. The power supply
should be blown out with low-pressure dry air to remove dust accumulations.
3. Connections should be clean and tight. Discoloration of terminals or wire is an indication of loose or
corroded connections.
4. Capacitors (both AC and DC) should be checked for oil leakage, case or seal rupture, etc. All screw
connections should be tightened or checked. DC capacitors over five years old or showing signs of
degradation should be removed and checked for excessive leakage and/or replaced.
5. Float and equalize voltages should be checked and adjusted. See sections 2.2 & 2.3.
6. If possible, the operation of current limit should be checked as excessive overload may be damaging.
7. To insure accurate meter readings, they should be checked periodically against portable standards.
Meters may be adjusted with the zero-adjusting screw on the face of the meter. Use care in doing so.

ARE Series Chargers
RS-759, Rev. 11 3-1
3. TROUBLESHOOTING
3.1 GENERAL DESCRIPTION OF OPERATION
The main components of ARE Series power supplies are shown in the accompanying block diagram. AC input
power is applied through the input circuit breaker to the power transformer. The circuit breaker provides over-
current and fault protection in case of malfunction or a short circuit in the input side of the equipment.
The power transformer in ARE Series power supplies is of the ferroresonant type. This class of transformers has
the output coil on the same leg of the core as the resonant winding. This winding, together with the same resonant
capacitor, maintains the core at a high level of saturation, resulting in fairly constant output voltage against
changes in the input voltage. The high reactance of this type of transformer provides protection against overload
and short circuit of the output.
To improve on the output voltage regulation of ferroresonant transformers against changes in load and input
frequency, the ARE Series power supplies employ UNIPOWER’s own controlled – ferro technique, which
controls the level of core saturation.
This is accomplished by shunting the resonant circuit with a triac in series with an inductor. The electronic
voltage/current control senses the start of the resonant capacitor charge cycle and also senses the output voltage
level, which it compares with a reference voltage. The error signal that results determines the instant the triac
turns on the interrupt the capacitor charge cycle and thus maintains the core saturation at the desired level.
Output current limit circuitry is also on the control board. When the current exceeds a preset level, a signal
proportional to the output current, developed by the DC ammeter shunt, overrides the voltage regulator and
maintains output current at the preset level. If a fault occurs, resulting in a higher output voltage, it is sensed by
the high voltage shutdown circuit, which trips the shunt trip AC breaker turning off the unit.
The power rectifier, which converts the AC voltage from the transformer into DC voltage, consists of silicon
diodes arranged in a full-wave circuit. The output of this rectifier is filtered and supplied to the battery and the
load through the DC circuit breaker.
FIGURE 3-1: BLOCK DIAGRAM FOR A TYPICAL “ARE” POWER SUPPLY










 




















ARE Series Chargers
RS-759, Rev. 11 3-2
3.2 TROUBLESHOOTING CHART
The following troubleshooting chart is designed to help a qualified technician diagnose the causes of equipment
malfunctions. It is intended to be used with the wiring and schematic diagrams. Following this section on
troubleshooting is a section on testing or checking of components. For best results, first identify the nature of the
problem and then check for each of the possible causes listed beside the symptom.
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 and resonant capacitors, if required. If a particular
check requires AC and /or DC power, follow the specific instructions for that test.
TROUBLESHOOTING CHART
Problem
Possible Causes
Solution
A. AC breaker trips
1. Short circuit in AC power circuit.
a. Inspect primary wiring for possible
shorts or grounded connections.
2. Input connected for lower voltage.
a. Check position of jumpers. Consult
connection diagram.
b. Measure input voltage.
3. High voltage shutdown operating.
a. Remove load and check for high
voltage.
4. Input voltage outside ANSI range.
a. Measure input voltage.
5. Frequency of supply less than 57 Hz.
a. Check input frequency.
6. Short in transformer winding.
a. Visually inspect power transformer
primary coils for signs of overheating.
B. No DC output.
1. AC power outage.
a. Check for AC voltage on both sides
of the breaker.
2. Short circuit in DC power circuit.
a. Inspect secondary power wiring and
terminals for shorts or grounded
connections.
b. Check power rectifier diodes.
c. Check for shorted DC filter
capacitors.
3. Open circuit.
a. Check all wiring for open or loose
connections.
C. Low DC output voltage.
Note: Panel VM may be defective.
Check voltage at DC output
Terminals with a portable meter.
1. Short in resonant circuit.
a. Check triac.
b. Check resonant capacitor.
c. Check resonant circuit wiring.
2. Open negative sensing lead.
a. Check wiring for continuity.
3. Unit in current limit.
a. Adjust current limit potentiometer.
4. Component failure in control board.
a. Replace control board.
5. Out of adjustment.
a. Adjust float potentiometer.
b. Adjust coarse adjustment on control
board.
D. High DC output voltage.
1. Open triac in resonant circuit.
a. Check triac.
2. Open sensing leads.
a. Check for DC voltage across voltage
divider resistor.
3. Control board failure.
a. Replace control board.
E. DC breaker trips.
1. Battery connection reversed.
a. Check polarity of battery
connections.
2. Short circuit in DC power circuit.
a. Inspect secondary power wiring and
terminals for possible shorts or
grounded connections.
b. Check power rectifier diodes or
molded rectifier (and DC filter
capacitors).
F. Excessive output current.
1. No current limit.
a. Current limit control improperly set.
b. Component failure in control board.
Replace.
c. Check connections from shunt to
control board.

ARE Series Chargers
RS-759, Rev. 11 3-3
TROUBLESHOOTING CHART continue
Problem
Possible Causes
Solution
G. Excessive electrical noise or
ripple.
1. Loose filter connections.
a. Check wiring and bus bars for loose
or corroded connections.
2. Open filter capacitor.
a. Check filter capacitors.
3. Open power diode.
a. Check power diodes.
4. DC cable routing (excessive noise).
a. Check broken cable ties.
5. Improperly sized battery.
a. Check battery rating.
H. Oscillations or poor regulation.
1. Loose connection.
a. Inspect circuit boards, connectors,
and wiring for loose contacts.
2. Defective triac.
a. Replace triac.
3. Component failure in control board.
a. Replace control board.
4. Open power diode.
a. Check power diodes. Replace as
required.
5. Resonant capacitor not grounded.
a. Check AC capacitor case to ground
with ohmmeter.
I. Low output current.
Note: Panel AM may be open or
defective. Check with portable
meter.
1. Loose connection.
a. Inspect wiring.
2. Open power diode.
a. Check power rectifier diodes.
Replace as required.
3. Unit in current limit.
a. Current limit control improperly
set.
b. Defective control board.
Replace.
J. Acoustic noise.
1. Loose laminations.
a. Check air gap areas of power
transformer and control reactor
with insulated screwdriver.
2. Cabinet vibration.
a. Check welds and bolted joints.
3.3 CHECKING COMPONENTS
Caution: Before attempting any of the following tests, be sure to disconnect both the AC power and the
battery, and discharge filter and resonant capacitors, if required.
NOTE: Replace defective components with exact duplicates only. See Section 4, Parts List.
FUSES: Fuses should be removed and then checked with an ohmmeter. A good fuse will show zero
resistance; and open fuse will show infinite resistance. Any ohmmeter scale can be used when checking
fuses.
DIODES: First, remove at least one connection to the diode, and then check using an ohmmeter to
measure resistance, first cathode to anode and then anode to cathode. A good diode will show low
resistance one way and very high resistance the other way. A shorted diode will show no or very low
resistance both ways. An open diode will show a very high resistance both ways. Suggested scales for
these checks are either X10 or X100.
CAPACITORS: First, isolate capacitors and then check with an ohmmeter. Proper scale range will vary
as to type of meter and capacitor size. Start with highest range and work down. Reverse leads each time.
If the capacitor is good, it will show a deflection towards zero resistance initially, then a steady increase
toward infinite resistance. If, however, the capacitor is shorted, it will show zero resistance. If the
capacitor is open, it will read infinite resistance.
RESONANT TRIAC: Remove one triac connection, being careful not to remove gate wire and check
with an ohmmeter. A good triac will indicate high resistance in both directions. To check for turn on of
the triac, do the following: with one lead still disconnect, connect the positive lead of an analog ohmmeter
to the anode of the triac and the negative lead to the cathode. The triac should read open or high
resistance. Connect the gate to the anode with a jumper. A low resistance reading indicates that the triac
is turning on.

ARE Series Chargers
RS-759, Rev. 11 4-1
4. DRAWINGS
FIGURE 4-1: MBC-3410B CABINET ASSEMBLY – 12 ¼” CABINET
Note: May be one to three capacitors in filter circuit. Items 14 and 18.