S&C TA-3370 User manual

January 27, 2020
© S&C Electric Company 2019-2020, all rights reserved Instruction Sheet 661-500
Three-Phase Battery Charger For 24-Volt Batteries
Operation
Table of Contents
Section Page Section Page
Introduction
Qualified Persons ........................... 2
Read this Instruction Sheet ................... 2
Retain this Instruction Sheet. . . . . . . . . . . . . . . . . . . 2
Proper Application .......................... 2
Warranty .................................. 2
Warranty Qualifications ...................... 2
Safety Information
Understanding Safety-Alert Messages........... 3
Following Safety Instructions .................. 3
Replacement Instructions and Labels ........... 3
Safety Precautions ......................... 4
Ratings and Standards...................... 6
Components
Overview.................................. 7
Wiring Interface............................. 9
LCD Screen ...............................10
Operation
Accessing the GUI Application Software .........11
Navigating the GUI Application Software .........12
Power Switch Operation and Configuration .......17
Connecting and Powering On the Charger with
a 24-Volt Battery ..........................18
Removing the Battery for Maintenance
or Replacement ...........................19
Connecting and Powering On the Charger
with a 120-Vac Single-Phase Source ......... 20
Connecting and Powering On the Charger
with S&C Three-Phase Voltage Sensors........21
Troubleshooting Tips ....................... 23
Appendix A
Using the Charger Pushbuttons for
Manual Operation ........................ 24
Appendix B
Connector Pin Descriptions .................. 28
Appendix C
System Line-to-Ground Voltage Calibration...... 30
Appendix D
Drawings................................. 32

2S&C Instruction Sheet 661-500
Introduction
Qualified Persons WARNING
The equipment covered by this publication must be installed, operated, and
maintained by qualified persons who are knowledgeable in the installation, operation,
and maintenance of electric power distribution equipment along with the associated
hazards. A qualified person is one who is trained and competent in:
• The skills and techniques necessary to distinguish exposed live parts from nonlive
parts of electrical equipment
• The skills and techniques necessary to determine the proper approach distances
corresponding to the voltages to which the qualified person will be exposed
• The proper use of the special precautionary techniques, personal protective
equipment, insulating and shielding materials, and insulated tools for working on
or near exposed energized parts of electrical equipment
These instructions are intended only for such qualified persons. They are not intended
to be a substitute for adequate training and experience in safety procedures for this
type of equipment.
Read this
Instruction Sheet NOTICE
Read this instruction sheet thoroughly and carefully before installing or operating
your Three-Phase Battery Charger. Familiarize yourself with the Safety Information
and Safety Precautions on pages 3 through 5. The latest version of this publication
is available online in PDF format at sandc.com/en/support/product-literature/.
For use with PME Pad-Mounted Gear, please familiarize yourself with Instruction
Sheet 666-510 to understand operating the PME gear.
Retain this
Instruction Sheet
This instruction sheet should be available for reference wherever and whenever Three-
Phase Battery Charger is to be used. Retain this instruction sheet in a location where
you can easily retrieve and refer to this publication.
Proper Application WARNING
The equipment in this publication must be selected for a specific application. The
application must be within the ratings furnished for the equipment.
Warranty The warranty and/or obligations described in S&C’s standard conditions of sale, as set
forth in Price Sheet 150, plus any special warranty provisions, as set forth in the applicable
product-line specication bulletin, are exclusive. The remedies provided in the former
for breach of these warranties shall constitute the immediate purchaser’s or end user’s
exclusive remedy and a fulllment of all seller’s liability. In no event shall the seller’s
liability to the immediate purchaser or end user exceed the price of the specic product
that gives rise to the immediate purchaser’s or end user’s claim. All other warranties,
whether express or implied or arising by operation of law, course of dealing, usage of
trade or otherwise, are excluded. The only warranties are those stated in Price Sheet 150,
and THERE ARE NO EXPRESS OR IMPLIED WARRANTIES OF MERCHANTABILITY
OR FITNESS FOR A PARTICULAR PURPOSE. ANY EXPRESS WARRANTY OR OTHER
OBLIGATION PROVIDED IN PRICE SHEET 150 IS GRANTED ONLY TO THE IMMEDIATE
PURCHASER AND END USER, AS DEFINED THEREIN. OTHER THAN AN END USER,
NO REMOTE PURCHASER MAY RELY ON ANY AFFIRMATION OF FACT OR PROMISE
THAT RELATES TO THE GOODS DESCRIBED HEREIN, ANY DESCRIPTION THAT
RELATES TO THE GOODS, OR ANY REMEDIAL PROMISE INCLUDED IN PRICE SHEET
150.
Warranty
Qualifications
The seller’s standard warranty does not apply to components not of S&C manufacture
that are supplied and installed by the purchaser or to the ability of the seller’s equipment
to work with such components.

S&C Instruction Sheet 661-500 3
Safety Information
Understanding
Safety-Alert
Messages
Several types of safety-alert messages may appear throughout this instruction sheet and
on labels and tags attached to the Three-Phase Battery Charger and gear. Familiarize
yourself with these types of messages and the importance of these various signal words:
DANGER
“DANGER” identifies the most serious and immediate hazards that will likely result in
serious personal injury or death if instructions, including recommended precautions,
are not followed.
WARNING
“WARNING” identifies hazards or unsafe practices that can result in serious personal
injury or death if instructions, including recommended precautions, are not followed.
CAUTION
“CAUTION” identifies hazards or unsafe practices that can result in minor personal
injury if instructions, including recommended precautions, are not followed.
NOTICE
“NOTICE” identifies important procedures or requirements that can result in product
or property damage if instructions are not followed.
Following Safety
Instructions
If you do not understand any portion of this instruction sheet and need assistance, contact
your nearest S&C Sales Ofce or S&C Authorized Distributor. Their telephone numbers
are listed on S&C’s website sandc.com, or call the S&C Global Support and Monitoring
Center at 1-888-762-1100.
NOTICE
Read this instruction sheet thoroughly and carefully
before operating your Three-Phase Battery Charger.
Replacement
Instructions
and Labels
If additional copies of this instruction sheet are needed, contact your nearest S&C
Sales Office, S&C Authorized Distributor, S&C Headquarters, or S&C Electric Canada Ltd.
It is important that any missing, damaged, or faded labels on the equipment be replaced
immediately. Replacement labels are available by contacting your nearest S&C Sales
Office, S&C Authorized Distributor, S&C Headquarters, or S&C Electric Canada Ltd.

Safety Precautions
4 S&C Instruction Sheet 661-500
DANGER
Pad-mounted gear contains high voltage. Failure to observe the precautions
below will result in serious personal injury or death.
Some of these precautions may differ from company operating procedures and
rules. Where a discrepancy exists, users should follow their company’s operating
procedures and rules.
SAFETY INFORMATION CONTINUES ▶
1. QUALIFIED PERSONS. Access to pad-mounted
gear must be restricted only to qualified persons.
See the “Qualified Persons” section on page 2.
2. SAFETY PROCEDURES. Always follow safe
operating procedures and rules.
3. PERSONAL PROTECTIVE EQUIPMENT. Always
use suitable protective equipment, such as rubber
gloves, rubber mats, hard hats, safety glasses, and
flash clothing, in accordance with safe operating
procedures and rules.
4. SAFETY LABELS. Do not remove or obscure and
of the “CAUTION,” “WARNING,” or “DANGER”
labels.
5. KEY INTERLOCKS.
• If optional key interlocks were furnished, they
must be in place.
• Check the operating sequence of key interlocks
to verify proper sequencing.
• After the pad-mounted gear is installed, either:
(1) destroy the extra set of keys or (2) make them
accessible only to qualified persons. This will
maintain the integrity of the key-interlock
scheme.
• Key interlocks are not security locks and are not
substitutes for padlocks.
6. OPENING DOORS. Do not force doors open.
Forcing a door open can damage the latching
mechanism. If optional key interlocks are provided,
correctly position the interlocks so the doors can be
opened.
7. CLOSING AND LOCKING DOORS.
• Doors must be securely closed and latched, with
padlocks in place at all times unless work is
being performed inside the enclosure.
• Mini-Rupter® Switches have switch-operating
shaft access covers located on the sides of the
pad-mounted gear enclosure. They must be
closed and padlocked at all times unless the
switches are being operated.
• For PME pad-mounted gear, do not close a door
on a TransFuser™ Mounting in the Open
position with a fuse in the mounting. The door will
strike the fuse pull-ring, which will interfere with
door-closing. The door may be closed if the fuse
is removed from the mounting.
• For PMH pad-mounted gear, do not close a door
on a fuse in the Open position. The door will
strike the fuse pull-ring, which will interfere with
door-closing. The door may be closed if the
fuse is removed from the mounting.
8. ENERGIZED COMPONENTS.
• Always assume both sets of power terminals on
any Mini-Rupter Switch or fuse are energized
unless proved otherwise by test, by visual
evidence of open-circuit conditions on both sets
of terminals, or by observing both sets of
terminals are grounded.
• The Three-Phase Battery Charger contains the
following energized components:
— 300 Volts in pins 1 through 10 in the J3 connector.
— 30 Volts for the other wire connection terminals
(pins 11 through 20 in the J3 connector,
J2 connector, and J4 connector).
9. BACKFEED. Mini-Rupter Switches and fuses may
be energized by backfeed.
10. DE-ENERGIZING,TESTING,ANDGROUNDING.
Before touching any device to be inspected,
replaced, serviced, or repaired in the high-voltage
compartments, always disconnect Mini-Rupter
Switches and fuses from all power sources
(including backfeed), test for voltage, and properly
ground.
11. TESTING. Test for voltage on both sets of power
terminals of any Mini-Rupter Switch or fuse using
proper high-voltage test equipment before
touching any device that is to be inspected,
replaced, serviced, or repaired in the high-voltage
compartments.

Safety Precautions
S&C Instruction Sheet 661-500 5
DANGER
Pad-mounted gear contains high voltage. Failure to observe the precautions
below will result in serious personal injury or death.
Some of these precautions may differ from company operating procedures and
rules. Where a discrepancy exists, users should follow their company’s operating
procedures and rules.
12. GROUNDING.
• Make sure the pad-mounted gear enclosure is
properly grounded to the station or facility
ground.
• After the gear has been completely
disconnected from all sources of power and
tested for voltage, install suitable grounding
cables in all compartments before touching any
device to be inspected, replaced, serviced, or
repaired in the high-voltage compartments.
13. SWITCH POSITION.
• Always confirm the Open/Close position of
Mini-Rupter Switches by visually observing the
position of the switch blades.
• Switches may be energized by backfeed.
• Switches may be energized in any position.
14. MAINTAINING PROPER CLEARANCE. Always
maintain proper clearance from energized
components.
15. FUSE STORAGE.
• Always store fuses in a clean, dry location.
• Do not store end fittings, holders, interrupting
modules, or fuses in termination compartments
unless the unit is equipped with the optional
fuse-storage feature (catalog number suffix
“-E1,” “-E2,” or “-E3”).

6 S&C Instruction Sheet 661-500
Ratings and Standards
Input Power Requirement
Table 1. Input Power Ratings
Input parameter Rating
Three-phase current source (from S&C voltage sensor) 140 – 195 mA at 20 VA
Auxiliary voltage 120 Vac
Frequency 50 or 60 Hz
Output Power Requirement
Table 2. Output Power Ratings
Output parameter Rating
Total output power (all three phases) 30 W
Radio output power 12 W (average), 27 W (maximum) during .25 second transmit every
5 seconds.
To relays and motor load 24 Vdc
Voltage to charge the 24-V battery 26.5 – 33 Vdc
Environmental Requirements
Table 3. Environmental Ratings
Output parameter Rating
Operating temperature -40°C to +70°C (-40°F to +158°F)
Storage temperature -40°C to +85°C (-40°F to +185°F)
Relative humidity 5% to 95% at 60°C (140°F), non-condensing
Regulatory Compliance
The Three-Phase Battery Charger complies to the
following standards:
Emissions Testing
• IEC 60255-26:2013 – Radiated RF emission
Immunity Testing
• IEC 60255-26:2013 – Radiated RF immunity
80 – 2700 MHz
• IEEE C37.90.2 – Radiated Susceptibility
• IEC 60255-26:2013 – Electrical fast transient/burst
immunity
• IEEE C37.90.1:2002 – Fast transient SWC
• IEC 60255-26:2013 – Conducted RF immunity
• IEEE C37.90.1 – Oscillatory transient SWC
• IEC 60255-26:2013 – Damped Oscillatory Burst
• IEC 60255-26:2013 – Surge immunity
• IEC 61000-4-8 – Magnetic Field
• IEEE C37.90.3 – Electrostatic discharge: air and
direct
• IEC 60255-26 – Electrostatic Discharge: Air/direct
Environmental and Safety Testing
• IEC 60255-27:2013 – Dielectric Strength
• IEC 60255-27:2013 – Insulation Resistance
• Mil-Std 810, 20 cycles -40°C to +70°C (-40°F to
+158°F)– Temperature cycling

S&C Instruction Sheet 661-500 7
Components
Overview
The purpose of this document is to instruct users how to
operate the Three-Phase Battery Charger to supply power
to gear radios, relays, and motor loads in the event of no
source power. This document also instructs users to know
the status of the battery and to be familiar with the use
the graphical user interface (GUI) computer application
software to monitor the gear. Table 4 on page 8 provides
the description of the components.
J4 connector
pinout label
J2 connector
pinout label
J3 connector
pinout label
CHARGER power switch
Three-phase
power switch
Indicator
LEDs
Communication
port J4 connector J2 connector
J3 connector
UP pushbutton
(for LCD screen)
DOWN pushbutton
(for LCD screen)
Charger RESET
pushbutton
BATTERY TEST
pushbutton
120-Vac single-phase
power switch
LCD Screen
Figure 1. The Three-Phase Battery Charger components.

8 S&C Instruction Sheet 661-500
Components
Table 4. Component Descriptions
Component or Label Type Description
CHARGER ON/OFF Switch
The charger will be powered from any of the three sources (three-phase, 120 Vac, or battery) when
this switch is turned on. Charging power is exported from the charger only when the battery is
connected.
Simulated Loss of
Primary Feeder
(three-phase power
switch)
Switch Turns on/off the three-phase voltage sensors to the charger
120 Vac Switch Turns on/off the 120-V single-phase ac source to the charger
COMM PORT DB9 connection
port
Using a USB-to-DB9 serial cable, this port is used to connect a computer to the charger in order to
use the GUI application software
Upper-right green
connector①
Wire connection
terminals This is the J2 connector. Used to connect output wires
Lower-right green
connector①
Wire connection
terminals This is the J3 connector. Used to connect power wires
Upper-left green
connector①
Wire connection
terminals This is the J4 connector. Used to connect control wires
J2 connector pinout
label Drawing label Shows the pin locations to connect the output wires
J3 connector pinout
label Drawing label Shows the pin locations to connect the power wires
J4 connector pinout
label Drawing label Shows the pin locations to connect the control wires
UP②Pushbutton Used to increment digits on the LCD screen. The digit displayed after the maximum will roll back to
the minimum digit
DOWN②Pushbutton Push and hold: Used to change programming modes on the LCD screen
Push: Used to shift to the next digit(s) on the LCD screen
RESET②Pushbutton
Used to reset the charger when any of these occurs:
• The battery is bad
• The battery has open cells
• The battery has been removed
BAT TEST②Pushbutton Used to test the battery
BATTERY TESTING LED Indicator turns on during battery testing
UNDER VOLTAGE LED Turns on when the battery voltage is lower than 21 Volts
OVER VOLTAGE LED Turns on when the battery voltage is higher than 34 Volts
AC NOT PRESENT LED Turns on when the charger is powered by the battery only
Screen LCD screen Used to show menus and status of the battery charger
①Refer to Appendix B for wire connector pin location details. ②S&C recommends using the GUI application software to operate and
configure the charger. See pages 11 to 16. For manual operation, refer
to Appendix A.

S&C Instruction Sheet 661-500 9
Components
Wiring Interface
The charger has three wiring connector interfaces (J2,
J3, and J4), each with two removable 10-terminal Phoenix
interface connectors. See Figure 1 on page 7. Pins 1 through
10 are located in the upper row (inside) and pins 11 through
20 are on the lower row (outside). See Figure 2.
Complete the following steps to install a wire in a con-
nector pin:
STEP 1. Using a small athead screwdriver, unscrew the
pin location needed to wire. See Figure 3.
STEP 2. When the pin screw is loosened, place the bare
part of the wire in the square slot under the
loosened screw and tighten the screw. Tighten
the screw until tight. Pull the wire to ensure it is
installed properly and does not come out. The
wire is now installed. See Figure 4.
NOTICE
For functional descriptions of the J2, J3, and
J4 connector pin locations, please refer to
Appendix B.
Figure 2. Wiring connector pin locations.
Figure 4. An installed wire.
Figure 3. Loosening a pin screw to install a wire.
Screwdriver
Pin number locations
1
11
10
20

10 S&C Instruction Sheet 661-500
Components
LCD Screen
When the charger is on, the LCD screen will display the
charger status. Information displayed on the LCD screen
depends on either of the following:
• If the charger is powered from the battery only
• If the charger is powered from either the 120-Vac single-
phase or three-phase power source with the battery
connected
Display on the screen when the charger is pow-
ered from battery only: If the charger is powered from
battery only, the following information will be displayed
on the LCD screen:
Battery status:
• BAT OK–Battery is good
• BAT LOW–Battery is low
• BAT BAD–Bad battery
Internal temperature (°F)
Time (24-hour format)
Date (MM/DD/YYYY format)
BV – Battery Voltage
Battery test history
NOTICE
The battery test results on the LCD screen will be
overwritten by the results of subsequent battery tests.
The battery test results on the LCD screen are also
cleared if the charger is turned off and then turned
back on.
This information will automatically scroll on the LCD
screen every three seconds.
Display on the screen when the charger is powered
from either ac source with the battery connected:
If the charger is powered from an ac source (either
120-Vac single-phase or three-phase voltage sensors) with
the battery connected, the following information will be
displayed on the LCD screen:
Battery Status:
• BAT OK–Battery is good
• BAT LOW–Battery is low
• BAT BAD–Bad battery
Charger Status:
• CHR OK–Charger is good
• CHR UV–Charger undervoltage
• CHR OV–Charger overvoltage
Internal temperature (°F)
Time (24-hour format)
Date (MM/DD/YYYY format)
CV–Charger Voltage
BC–Battery Charge Current
Battery test history
NOTICE
The battery test results on the LCD screen will be
overwritten by the results of subsequent battery tests.
The battery test results on the LCD screen are also
cleared if the charger is turned off and then turned
back on.
This information will automatically scroll on the LCD
screen every three seconds.

S&C Instruction Sheet 661-500 11
Operation
Accessing the GUI Application Software
The GUI application software is used to operate and
configure the charger. S&C recommends using this
application instead of manually operating and conguring
the charger through the pushbuttons on the charger. To
use the pushbuttons, please refer to Appendix A of this
instruction sheet.
Complete the following steps to log in to the GUI
application:
STEP 1. Obtain the USB-to-DB9 serial cable and connect
the DB9 end to the COMM PORT on the charger
and the USB end to the user’s computer.
STEP 2. Run the BatteryCharger.exe le from the
computer to launch the GUI application.
NOTICE
The GUI application software BatteryCharger.exe
file can be downloaded by logging in to S&C’s
customer portal at sandc.com/en/support/
sc-customer-portal.
STEP 3. When the GUI application Log-in screen opens,
enter the User Name and Password as shown in
Figure 5 to log in:
NOTICE
To obtain the User Name and Password to
log in to the GUI application, please contact
S&C Electric Company.
STEP 4. Click on the Login button to access the GUI
application. The user can also click on the
Cancel button to clear the User Name and
Password text boxes.
Figure 5. The GUI application Log-in screen.

12 S&C Instruction Sheet 661-500
Operation
Navigating the GUI Application Software
When logged in to the GUI application software, the user
will see ve tabs across the top of the screen from left to
right:
• Firmware Upload
• Battery Status
• Settings
• Battery Test
• Battery Test History
To the left side of each tab screen is a side window that
shows the available communication ports, the connected
port, and the status of the connection. See Figure 6. At the
bottom of the side window is a reference to the version of
the GUI application software.
Firmware Upload Tab
The Firmware Upload tab is the default screen when the
user logs in and is used for updating the charger rmware.
See Figure 7. Table 5 denes the elds and buttons in the
Firmware Upload screen.
Table 5. Firmware Upload Field and Button
Descriptions
Field or Button Description
Firmware Path This field allows the user to enter the location
of the firmware file using the Browse button.
Browse This button allows the user to select the
firmware file from the computer.
Clear This button is used to clear the Firmware
Path field.
Install
This button is used to start the firmware
upload. While updating, the user is restricted
from accessing other tabs.
Firmware Upload This status bar shows the % completion of the
firmware upload.
Figure 6. The side window.
Figure 7. The Firmware Upload screen.
Side window

S&C Instruction Sheet 661-500 13
Operation
Complete the following steps to download the latest
firmware to the charger:
STEP 1. Obtain the USB-to-DB9 serial cable. Connect
the DB9 end to the COMM PORT of the charger
and the USB end to the computer.
STEP 2. Log in to the S&C customer portal at
sandc.com/en/support/sc-customer-portal
to download the latest version of the rmware
to the computer.
STEP 3. Log in to the GUI application software. In
the Firmware Upload tab (See Figure 7 on
page 12), select the le from the computer and
download the rmware to the charger by
clicking on the Install button.
Battery Status Tab
The Battery Status screen is used to view the status of the
charger. See Figure 8.
NOTICE
The Battery Status screen may need to be refreshed
to capture present data. Click on the Battery Status
tab to refresh.
The two buttons the user can use are:
Convert to °C – This button enables the user to convert
the temperature seen on the screen to degrees centigrade.
The button can also revert the temperature shown on the
screen from degrees centigrade to degrees Fahrenheit.
Alarm Reset – This button enables the user to reset
external alarms with these conditions:
• Battery Bad
• Battery Under Voltage
• Battery Over Voltage
• Battery Removed
• Battery with Open Cells
For Battery Removed or Battery with Open Cell
alarms: To replace a battery or to clear the battery
records:
STEP 1. Disconnect the two-pin connector separating
the battery from the charger. See Figure 17 on
page 18.
STEP 2. Run a battery test by clicking on the Battery
Test button in the Battery Test tab. See Figure
11 on page 15.
STEP 3. Conrm the NO BAT (No Battery) message
appears on the LCD.
Figure 8. The Battery Status screen.

14 S&C Instruction Sheet 661-500
Operation
Figure 10. Fields on the Settings screen that are configurable.
STEP 4. Connect the desired battery. Click on the Alarm
Reset button to enable the battery to reconnect
to the charger. When the button is clicked, a
message will pop up, “Do you want to override
the BAT Records?” See Figure 9.
STEP 5. Click on the Yes button if battery test results
must be overwritten. This is recommended if
the battery was replaced so records from the old
battery are not displayed for a newly installed
battery.
STEP 6. Click on the No button if battery test results
must be stored. This is recommended if the
battery was just unplugged for maintenance.
Settings Tab
In the Settings tab, the user can congure the charger with
the elds shown in Figure 10. Each setting must have the
box to the left of the setting checked in order to be saved.
Table 6 shows the descriptions of the elds shown on the
Settings screen.
Table 6. Field Descriptions for the Settings Tab
Field Description
Battery Charger Current
The user can set the battery charger
current. The current range is from 0.000
to .500 amperes. A readback of this
value is displayed on the Battery Status
screen under the User Set Max Current
field.
Date/Time
The user can configure the date and
time. By placing the cursor on the exact
parameter, the user can click on the
up and down arrows to increment or
decrement the values respectively.
The date and time can also be entered
by means of the keyboard numbers and
traversing left and right by using the
keyboard arrows.
Date is in the form of MM/DD/YYYY and
time is in the form of HH:MM:SS
(24-hour format).
Remove battery from
charger under BAD
condition or less than
17.5 V①
The charger will disconnect the battery
from the charger under the Battery Bad
condition or if battery voltage is less
than 17.5 V.
Select the Yes option if the battery
should be disconnected.
Select the No option if the battery
should not be disconnected.
A readback of this selection is displayed
on the Battery Status screen under the
Bad Battery or Under 17.5V Action
field.
Save
This button allows the user to save the
changes made to the checked/selected
configurable fields.
Update Setting
This status bar shows the % completion
of the saving process when the Save
button is used.
①Default answer is the Yes option (recommended).
Figure 9. The battery test results override pop up window.

S&C Instruction Sheet 661-500 15
Operation
Battery Test Tab
The Battery Test tab is used to conduct a battery test.
See Figure 11.
To conduct a battery test, click on the Battery Test
button. The user cannot access any other tabs until battery
test is complete. The status box will be updated during the
battery test, and the progress bar will visually show the
progression of the test. See Figure 12.
NOTICE
During the first 24-hour operation period, the battery
is automatically tested every two hours. After that,
when ac power is present and the charger is turned
on, the battery is tested once a day at midnight (per
the time on the charger). If the battery is powering
the charger due to a loss of ac source, a battery test
will occur every two hours. The battery test is used to
measure effective battery capacity and can be started
remotely with the GUI application Battery Test
command, as shown in Figure 11, by the Battery Test
Start input relay through the J2 connector, or by the
BAT TEST pushbutton on the charger, as described in
Appendix A.
Battery Test History Tab
The Battery Test History tab enables the user to view
automated test reports. Manually initiated tests are not
shown. See Figure 13.
The report subtabs in this screen are as follows:
First 12 Test Records–Displays the rst 12 battery test
records that are automatically initiated (Manual battery
tests are not captured in this record.)
First Year Monthly Records–Displays the battery test
records from the rst year
Latest 1 Year Monthly Records–Displays the battery
test records of the present year
The reports will show the date, time, battery status,
temperature, voltage, and impedance.
Figure 12. The Battery Test screen status box and progress bar.
Figure 11. The Battery Test screen.
Progress bar
Status box
Figure 13. The Battery Test History screen.

16 S&C Instruction Sheet 661-500
Operation
Figure 14. An exported battery test history report.
Complete the following steps to view the battery test
history reports:
STEP 1. Select a report subtab (rst 12 test records, rst
year monthly records, or latest 1 year monthly
records).
STEP 2. Click on the Test History button. This will
enable the user to see the subtab report.
NOTICE
If the data does not appear, click on the Test
History button again to refresh the data.
STEP 3. If desired, the user can export the data as a CSV
le by clicking on the Export To CSV button. A
pop-up window will appear and display the
directory wherethele is saved onthecomputer.
STEP 4. When the le is located, the user can open it
using software such as Microsoft Excel®,
Notepad, Google Sheets, etc. See Figure 14.

S&C Instruction Sheet 661-500 17
Operation
Power Switch Operation and Configuration
The charger has three power switches, as shown in
Figure 15:
• A charger power switch
• A 120-Vac single-phase power switch
• A three-phase power switch
Complete the following steps to turn on the charger
(assuming all power sources are connected to the charger):
STEP 1. Turn on the desired power switch to power the
charger from an ac source (either the three-
phase power switch or the 120-Vac single-phase
power switch).
STEP 2. After the desired power source switch is turned
on, turn on the CHARGER POWER switch. The
LCD screen will turn on and the charger will
power on.
NOTICE
If the charger has a battery connection,
a 120-Vac single-phase power source
connection, and a three-phase power
source connection, and all three switches
are turned on, the charger will be powered
by the 120-Vac single-phase power source
as a default.
If the charger has a battery connection,
but no 120-Vac single-phase power source
connection and no three-phase power
source connection, and all three switches
are turned on, the charger will be powered
by the battery.
Figure 15. The charger’s three power switches.
Figure 16. Switches in the Off position.
120-Vac SINGLE-PHASE
POWER switch
Three-phase power
switch
CHARGER POWER switch

18 S&C Instruction Sheet 661-500
Operation
Figure 19. The LCD will turn on when the CHARGER POWER
switch is in the On position if a battery is connected.
Connecting and Powering On the Charger
with a 24-Volt Battery
Complete the following steps to connect and power on the
charger with a 24-Vdc battery:
STEP 1. Make sure the 120-Vac single-phase power
switch, the three-phase power switch, and the
charger power switch are in the Off position.
See Figure 16 on page 17.
STEP 2. Making sure the two-pin connector is
disconnected, use a small athead screwdriver
to conrm the 24-Vdc battery wires to the
charger are connected. The battery positive
wire should be connected to pin 1 and the
battery negative wire should be connected to
pin 4 of the J2 connector. See the J2 connector
pinout label on the charger faceplate for exact
pin locations to terminate the wires.
STEP 3. Connect the two-pin connector. See Figure 17.
Before turning on the charger, use a voltmeter
to conrm the voltage at the J2 connector.
Voltage across pin 1 (battery positive) and pin 4
(battery negative) should be between 20 Vdc and
26 Vdc (depending on the battery state of
charge). See Figure 18.
STEP 4. Turn the CHARGER POWER switch to the On
position. The charger will turn on, and the LCD
screen will display the charger and battery
status. See Figure 19.
NOTICE
With the charger power switch on, the
battery will power the charger if no 120-Vac
single-phase power source or three-phase
power source is supplied to the charger,
regardless of the 120-Vac single-phase or
three-phase power switch positions.
Figure 17. Battery wires connected to the J2 connector. The J2
connector pinout label is used as a reference for battery wire
connection locations.
Sample battery
Two -pin
connector
Battery wire
connections
J2 connector
pinout label
Figure 18. Locations to test the battery connections using a
voltmeter.
Battery wires
Voltmeter leads

S&C Instruction Sheet 661-500 19
Operation
Removing the Battery for Maintenance or
Replacement
Complete the following steps to remove a battery:
STEP 1. Disconnect the two-pin connector separating
the battery from the charger. See Figure 17 on
page 18.
STEP 2. Run a battery test by clicking on the Battery
Test button in the Battery Test tab. See Figure
11 on page 15.
STEP 3. Conrm the No Battery message appears on
the GUI application software.
STEP 4. To place a new battery or to rewire the existing
battery to the charger, follow Steps 2 through 4
of the previous section on page 18.
STEP 5. Using the Battery Status tab in the GUI
application (Figure 8, page 13), click on Alarm
Reset button to reset the charger. A pop-up
window will ask, “Do you want to override the
BAT (battery) records?” Selecting the No option
means the battery records will not be
overwritten. Selecting the Yes option means all
battery records will be deleted and new battery
records will be stored. This enables the charger
to connect to the battery.

20 S&C Instruction Sheet 661-500
Connecting and Powering On the Charger
with a 120-Vac Single-Phase Source
Complete the following steps to connect and power on the
charger using a 120-Vac single-phase source:
STEP 1. Make sure the 120-Vac single-phase power
switch, the three-phase power switch, and the
charger power switch are in the Off position.
See Figure 16 on page 17.
STEP 2. Using a small athead screwdriver, connect the
120-Vac power source wires to the J3 connector
by connecting the ground wire to pin 10, the line
(hot) wire to pin 9, and the neutral wire to pin 8.
See the J3 connector pinout label on the charger
faceplate for exact pin locations to terminate
the wires. See Figure 20.
STEP 3. Plug in the 120-Vac source and use a voltmeter to
conrm the voltage at the J3 connector before
turning the 120-Vac single-phase power switch
On. The voltage between pin 10 (ground wire)
and pin 9 (line wire) should be 120 Vac +/-10%.
See Figure 21(a). The voltage between pin 10
(ground wire) and pin 8 (neutral wire) should be
less than 1 Vac. See Figure 21(b).
STEP 4. Making sure the two-pin connector is
disconnected, use a small athead screwdriver
to secure the 24-Vdc battery wires to the charger
by connecting the battery positive wire to pin 1
and battery negative wire to pin 4 of the J2
connector. See the J2 connector pinout label
on the charger faceplate for exact pin locations
to terminate the wires. Now, connect the two-
pin connector so the battery is connected to the
charger. See Figure 17 on page 18.
STEP 5. Before turning on the charger, use a voltmeter
to conrm the voltage at the J2 connector.
Voltage at pin 1 (battery positive) and pin 4
(battery negative) should be between 20 Vdc
and 26 Vdc (depending on the battery state of
charge). See Figure 18 on page 18.
STEP 6. Turn the 120-Vac single-phase power switch to
the On position. See Figure 22.
STEP 7. Turn the CHARGER POWER switch to the On
position. The charger will turn on, and the LCD
screen will display the charger and battery
status. See Figure 23 on page 21.
NOTICE
If all three power switches are turned on and the
sources are present, the charger is powered by the
120-Vac single-phase power source.
Connecting and Powering On the Charger
Operation
Figure 21. Locations to test the 120-Vac power source using a
voltmeter: (a) measuring pin 10 to pin 9, and (b) measuring pin
10 to pin 8.
(a) Voltmeter leads (b) Voltmeter leads
Figure 20. 120-Vac wires connected to the J3 connector. The J3
connector pinout label is used as a reference for wire connection
locations.
120-V ac wire
connections
J3 connector
pinout label
Figure 22. The 120-Vac single-phase power switch in the On
position.