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13
Instruction Manual
IM01500001E
Effective July 2011
Pow-R-Line switchboards
eaton Corporation
www.eaton.com
Pre-energizing procedures and inspection
Before energizing any switchboard, perform a comprehensive
inspection to make certain that the switchboard is ready to be
energized . This includes the following steps:
1.
Verify that the switchboard is not energized .
2.
Visually inspect the switchboard and remove all foreign materials,
such as tools, scraps of wire, and other debris from all switch-
board sections .
3.
Remove and discard all packing materials and temporary shipping
braces from the switchboard .
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 switchboard 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 switch terminals, contactors, metering, and other connec-
tions, including the incoming terminals .
8.
Visually inspect switchboard insulators, busbar, and conductors
for damage . DO NOT ENERGIZE IF DAMAGE FOUND .
Contact Eaton .
9.
If fusible switch type overcurrent devices are used, verify that
proper fusing has been selected and installed . Eaton does not
typically supply switchboards with these fuses .
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 switchboard . Contact Eaton .
Circuit breakers
Some circuit breaker types provide the ability to adjust trip settings .
When shipped, settings are typically at the minimum rating . There
are two types of trip units included in this group: adjustable thermal
magnetic and electronic trip units .
Thermal magnetic trip units
may have an adjustable magnetic
setting . Use the engineering study recommendations, if available,
to adjust to the proper setting . Low magnetic settings feeding high
inrush loads, such as motors, could nuisance trip on startup . For
specifics on breaker types, consult the circuit breaker instruction
leaflets shipped with the switchboard .
Electronic trip units
have several settings depending on the breaker
ordered . Electronic trip units may include long-time (L), short-time
(S), instantaneous (I), and ground fault (G) settings . These trip units
are available in combinations LS, LSI, LSG, and LSIG . Check the
electrical drawings, engineering study, or the engineer’s recommen-
dations for these trip unit settings . For details on each type, refer to
the Eaton circuit breaker and electronic trip unit instruction leaflets
shipped with the switchboard .
For certain breakers with electronic trip units, a portable test kit is
available from Eaton . An auxiliary power module is included in the
test kit . This auxiliary power module powers the electronic trip unit
when the board is de-energized and allows testing . The kit includes
complete instructions and test times for testing long-time, short-
time/instantaneous operations, and optional ground fault operation
of the circuit breakers .
Figure 25. Circuit Breakers
Circuit Breaker with
Adjustable Magnetic
Trip Unit
Circuit Breaker with
Electronic Trip Unit
Содержание Pow-R-Line SPX0361126
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