8
Instruction Booklet
IB015001EN
Effective June 2015
Power Xpert Solar DC
breaker recombiner
EATON
www.eaton.com
Electrical connection of
Recombiner sections
Electrical connections between Recombiner sections, when
required, are made using bus splice plates . Consult the
manufacturer’s drawings for details for each Recombiner section .
Remove structure deadfront covers and side sheets as needed
to access Recombiner chassis and components . Retain all cover
mounting hardware and covers for reassembly . Protect hardware
and parts from moisture, debris, and damage .
Splice plates
Splice plates are short flat pieces of busbar that join the main
bus running horizontally through a multiple section Recombiner
(see
Figure 14
) .
Figure 14. Splice plates
For larger amperage Recombiners, multiple splice plates are to be
used on the same phase . Maintain the orientation, by phase and
sequence of the splice plates . The orientation of the splice plates
must remain identical to the way they were shipped from the
manufacturer . Clearances must be maintained . If you are unsure
about the correct orientation or have questions about the installation,
contact Eaton before installing the splice plates .
Splice plates are used to attach the main horizontal bus between
Recombiner sections or shipping splits . While maintaining the correct
phase orientation and sequence, install splice plates with the carriage
bolts and hex nuts with captive Belleville washers supplied by the
manufacturer . Refer to
Appendix A,
Table 1
for torque values .
Carriage bolts must align with the corresponding rectangular
holes in the fixed horizontal bus and the splice plates . If multiple
splice plates are used, install in the same sequence as shipped
from the manufacturer . The ground bus should be connected in the
same manner .
Inspect splices plates and main fixed horizontal bus prior to
installation . If there is any suspected damage, contact the
manufacturer immediately for replacements . NEVER ENERGIZE
ANY RECOMBINER WITH DAMAGED BUS OR COMPONENTS .
To accommodate future serviceability, the manufacturer
recommends that the head of the carriage bolt be mounted from
the rear of the Recombiner for FRONT ACCESSIBLE Recombiners
with the hex nut with Belleville washer positioned to the front .
For REAR ACCESSIBLE Recombiners, the manufacturer
recommends that the head of the carriage bolt be mounted from
the front of the Recombiner with the hex nut and Belleville washer
positioned to the rear .
Repeat the process until all holes in the horizontal bus are connected
with bolts and nuts for each shipping split . Inspect connections to
ensure that there is no foreign material at the connection point and
that all connections are properly aligned and bolts are seated .
Torque all connections to torque requirements on labels affixed to
each Recombiner and as shown in
Appendix A,
Table 1
.
Grounding
WARNING
THE DC INPUT AND DC OUTPUT CIRCUITS ARE ISOLATED FROM THE
ENCLOSURE AND SYSTEM GROUNDING, IF REQUIRED BY SECTION 250 OF
THE NATIONAL ELECTRICAL CODE, ANSI/NFPA 70, IS THE RESPONSIBILITY
OF THE INSTALLER.
WARNING
THE PHOTOVOLTAIC SYSTEM GROUNDING SHALL BE INSTALLED PER
THE REQUIREMENTS OF SECTIONS 690.41 THROUGH 690.47 OF THE
NATIONAL ELECTRICAL CODE, ANSI/NFPA 70 AND IS THE RESPONSIBILITY
OF THE INSTALLER.
Torque both line and load connections to values indicated on the
labeling on the Recombiner . Refer to
Appendix A, Table 2
for
torque values .
Installation of incoming Recombiner connections
DANGER
DE-ENERGIZE RECOMBINER—HAZARDOUS VOLTAGE WILL CAUSE SEVERE
INJURY OR DEATH.
DO NOT work on electrical equipment while it is energized . Verify
that power entering the equipment is de-energized at the source .
Power is brought into a Recombiner by cable .
Remove structure covers as needed to access Recombiner chassis
and components . Retain all cover mounting hardware and covers for
reassembly . Protect hardware and parts from moisture, debris, and
damage
otee:
N
As a minimum, all Recombiner connections are rated for use with
90 °C or higher rated conductors . When wire is used with temperature ratings
above 90 °C, it shall be sized based on the ampacity of wire rated 75 °C .
View "A"
Typical view when more
than one bar per phase
