9
Instruction Booklet
IB015001EN
Effective June 2015
Power Xpert Solar DC
breaker recombiner
EATON
www.eaton.com
Wire/cabling
When cable connections are used, either mechanical set screw or
compression lugs are typically supplied (see
Figure 15
.) See factory
drawing for specific lug terminations and wire ranges .
Figure 15. Screw and compression lugs
Unless a Recombiner specifically restricts entry to a single means or
area, cables may enter through the top, bottom, side, or back of the
section . These restrictions are typically required to conform to wire
bending space requirements of the NEC . Consult the manufacturer’s
drawings for conduit entry data .
Once the conductors are pulled inside the Recombiner, the cables
should be formed in the space provided . Clearly identify and
segregate conductors by phase . Care should be taken in forming
insulated cables to ensure that no insulation is forced permanently
against the edges of any metal parts .
Using appropriate tools, the installer must strip the conductor
insulation sufficiently to fill the entire barrel of the connector with
bare, uninsulated conductor . Conductor must be stripped without
damage to the conductor strands . Bare strands should be of equal
length (flush) on the end cut .
Do not strip off more insulation than needed . Exposure of bare
conductor outside lug can compromise clearances .
The connector and conductor should be free of all foreign debris .
Never clip cable/wire strands in order to fit within connectors .
If cable/wire does not match the rating of the connector, contact
the manufacturer .
Mechanical set screw lugs are the most common . Use an
antioxidant compound, if required . Insert bare conductor into lug
so the bare conductor fills the full length of the lug body . Tighten lug,
then torque to levels indicated on the Recombiner label .
If compression lugs are used and supplied with the Recombiner, the
lugs will be mounted on the outgoing lug pad . Remove lugs from
the pad . Use an antioxidant compound, if required . Use a crimping
tool approved for that specific lug manufacturer and lug size . Follow
instructions provided by the manufacturer of the crimp tool .
Once the lug is affixed to the conductor, reinstall the lug on the lug
pad using the existing hardware . Torque hardware using information
provided on Recombiner labeling . Refer to
Appendix A, Table 1
for
torque values .
Pre-energizing procedures and inspection
Before energizing any Recombiner, perform a comprehensive
inspection to make certain that the Recombiner is ready to be
energized . This includes the following steps:
1.
Verify that the Recombiner is not energized .
2.
Visually inspect the Recombiner and remove all foreign
materials, such as tools, scraps of wire, and other debris
from all Recombiner sections .
3.
Remove and discard all packing materials and temporary shipping
braces from the Recombiner .
4.
Any accumulation of dust and dirt should be removed with a
vacuum cleaner . Use a lint-free cloth to remove dust and dirt
on other surfaces . Never use compressed air as this may blow
contaminants into electrical and/or electronic components .
Never use solvents or other chemicals to clean surfaces or
components .
5.
Visually inspect all ventilation points to ensure that there is no
blockage or debris . Remove any debris that is present .
6.
Verify that all field bus and wire connections have the proper
torque per instructions on the Recombiner and on components .
7.
All factory connections are made using calibrated power tools .
However, vibrations do occur in transit and handling . Verify
factory connections by checking at least 10% of the total factory
connections for tightness . If this spot check reveals loose
connections, proceed to check all factory connections . These
connections include bus hardware connections, circuit breaker
and other connections, including the incoming terminals .
8.
Visually inspect Recombiner insulators, busbar, and conductors
for damage . DO NOT ENERGIZE IF DAMAGE FOUND .
Contact Eaton .
Overcurrent devices
Overcurrent devices are typically shipped in either the open (OFF)
or “tripped” position . Manually close, and then open these devices
to ensure that they are functioning properly . At the completion of
this process, be sure that the overcurrent device is in the OFF or
“tripped” position .
Inspect overcurrent devices for any visible damage . If damage is
found, DO NOT ENERGIZE the Recombiner . Contact Eaton .
Mechanical set
screw lug
Standard one-hole
compression-type lug
