Alpha DCX Series - Output Connections

12
C048-699-30 R03, Rev. B (01/2021)
Step 3. Check voltage on the battery termination plate relative to battery positive and ensure that approximately 54 VDC is
measured. Ensure there are no cables connected to the DCX output bus bar and that the clear plastic covers are
installed.
Step 4. Flip DCX breaker to the ON position. The “ON-Line” blue LED should light and the unit should be functional. To
test the EPO trip, push in the remote EPO switch; the DCX breaker should trip to the OFF position and the ON-line
LED will go out and the OFF-line LED will turn on. The EPO Tripped LED will also turn on and will stay on as long
as the remote EPO switch is on.
Step 5. Reset the remote EPO switch to o󰀨, reset the DCX breaker to ON. Observe correct LED indication of ON-LINE.
The alarm contacts can be tested with an ohmmeter if desired by ipping the DCX breaker handle o󰀨 and on and
observing the alarm contacts opening and closing with the ohmmeter.
Step 6. Flip DCX breaker to the OFF position.
4.10 4.10 Output ConnectionsOutput Connections
TURN OFF THE DCX BREAKER AND DISCONNECT A SERIES CELL BUS BAR TO DISABLE SERIES
STRING CONNECTION AND VOLTAGE TO THE DCX UNIT.
CAUTION!
WARNING! ELECTRICAL HAZARD
MULTIPLE POWER SOURCES ARE PRESENT. ENSURE ALL POWER FEEDS ARE NOT ENERGIZED
BEFORE INSTALLING THEM. ELECTRICAL INSTALLATION SHOULD ONLY BE PERFORMED BY
QUALIFIED PERSONNEL WITH PROPER TOOLS AND PROTECTIVE SAFETY EQUIPMENT.
FAILURE TO INSTALL/REINSTALL THE SAFETY COVERS WILL CREATE AN ELECTRICAL HAZARD.
MAKE SURE THAT ALL FEEDER CABLES HAVE HEAT SHRINK APPLIED PRIOR TO TERMINATION,
AND THAT NO-OXIDE COMPOUND IS APPLIED TO ALL COPPER-TO-COPPER CONNECTIONS. SEE
SECTION 5 FOR TERMINAL SPECIFICATIONS, TOOLING, AND ORDERING INFORMATION.
NOTICE:
Table 6. Output Cable Torque Specications
TERMINATION
TYPE
HOLE/STUD
SIZE
CENTER TO
CENTER
RECOMMENDED
TORQUE VALUE
Threaded Insert 1/2 in. 1.75 in. 43.75 ft·lbs
Threaded Insert 3/8 in. 1 in. 18.75 ft·lbs
Step 1. Remove the top clear cover for access to the output cable lug landing bus bar area by removing the four phillips
head screws. Four mounting patterns are included for 1/2 in. hardware large pattern lugs such as up to 750MCM,
and three 3/8 in. hardware lug patterns are included for smaller lug mounting. Double check with a voltmeter that
the input to the DCX is not energized. Ensure no-oxide compound is used on the lug and bus bar surfaces, then
secure the output cables and lugs into place. Refer to Table 6 for output cable torque specications.
Step 2. Route the cables vertically to the lacing bar or ladder rack above the unit and lace securely. Ensure that the cable
is well supported above the DCX unit to ensure that the cable weight does not place undo strain on the battery
terminal or DCX unit.
Step 3. Use ush cutters or scissors to cut the appropriate cable access notches in the clear cover to provide clearance
for the number of output cables installed. Reinstall the clear cover.
Prior to connection of the battery series cell connections or connection of the output cable ends to rectier bays or load
devices, the user is advised to perform several safety checks and verication of correct wiring polarity and installation.