11
Instruction Manual
IB015002EN
Effective November 2021
Pow-R-Line CS switchboards
EATON
www.EatonCanada.ca/PRLCS
Circuit breakers
Some circuit breaker types include 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 . These types are
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
recommendations 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 .
Circuit breaker with
adjustable magnetic
trip unit
Circuit breaker with
electronic trip unit
Figure 16. Circuit breakers
Overcurrent devices with ground fault protection
This switchboard may contain overcurrent devices with Ground Fault
Protection (GFP) . The Canadian Electrical Code may require ground
fault protection for this installation . Other GFP applications may
be used including multi-level ground fault protection . Refer to the
switchboard drawings and electrical construction drawings for usage
and placement within the switchboard .
Ground fault protection may be installed integral to over-current
device(s) or as a separate system . Separate systems typically are
connected to a shunt tripping mechanism on an overcurrent device .
Visibly inspect connections on GFP systems, neutral sensor s and
ground connections . Refer to manufacturer’s instructions for details .
Prior to shipment, the manufacturer has preset the ground fault
protection at minimum set points . Adjust settings per engineered
electrical plan drawings . If this information is not readily available,
contact the design engineer or other qualified persons responsible
for the specifics of the installation and system design .
Prior to testing the GFP system, remove the neutral disconnect
link(s) on the switchboard to isolate the neutral of the system from
the supply and ground .
Confirm that the neutral connection has been run from the supply to
the service equipment per the Canadian Electrical Code .
GFP systems should be performance tested when first installed .
Conduct tests in accordance with the approved instructions provided
with the equipment . A written test report should be available for the
Authority Having Jurisdiction . Refer to the Canadian Electrical Code
for specific requirement or contact Eaton .
For certain breakers with electronic trip units, a portable test kit is
available from Eaton, at additional cost . The kit includes complete
instructions and test times for testing long-time, short-time/
instantaneous operations and ground fault operation of the circuit
breakers . Use of testing equipment other than that supplied by
Eaton can cause permanent damage to the circuit breaker trip unit
and will void the warranty .
CAUTION
DO NOTTEST A CIRCUIT BREAKER WHILE IT’S IN-SERVICE AND
ENERGIZED.
CAUTION
TESTING OF A CIRCUIT BREAKER THAT RESULTS IN THE TRIPPING
OF THE CIRCUIT BREAKER SHOULD BE DONE ONLY WHEN THE
SWITCHBOARD IS DE-ENERGIZED.
Field-testing of ground fault protection must follow instructions
provided with each GFP device . Due to the varied types of GFP
systems, testing instructions can vary from device to device .
Refer to the specific testing instructions for each device . Refer
to instruction leaflets that are shipped with each switchboard
containing GFP or contact Eaton .
