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Instruction Manual IM01500001E
Effective July 2011
Pow-R-Line switchboards
EATON CORPORATION www.eaton.com
Overcurrent devices with ground fault protection
This switchboard may contain overcurrent devices with ground fault
protection (GFP). The National 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 overcurrent
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 sensors and
ground connections. Refer to manufacturer’s instructions for details.
Prior to shipment, the manufacturer has pre-set 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 National Electrical Code.
The National Electrical Code, Article 230-95 requires that any GFP
systems must be performance tested when first installed. Conduct
tests in accordance with the approved instructions provided with the
equipment. A written test report must be available for the Authority
Having Jurisdiction (AHJ). Refer to the National 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/instanta-
neous 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 NOT TEST 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 instruc-
tion leaflets that are shipped with each switchboard containing GFP
or contact Eaton.
Current transformers
Switchboards containing metering and monitoring equipment may
contain current transformers (CTs) integral to the switchboard.
Ensure that the load side of the CTs are connected or are shorted
together with terminal block shorting means. Remove shorting
means for normal CT operation with metering equipment. For
additional information and instructions, refer to instruction leaflet
shipped with the switchboard.
Preparing switchboard for insulation/megger testing
CAUTION
FAILURE TO SHORT OR DISCONNECT DURING SWITCHBOARD TESTING
WILL RESULT IN FAILURE OF ELECTRONIC COMPONENTS.
Devices installed with control power fusing
Devices that require control power fusing can be easily damaged
beyond repair if not disconnected during the testing phase.
These devices include, but are not limited to, customer metering
equipment, electronic breaker trip units, motor operators, and
communication equipment.
WARNING
DISCONNECT POWER AT SOURCE BEFORE REMOVING OR INSTALLING
FUSES. HAZARDOUS VOLTAGE WILL CAUSE SEVERE INJURY OR DEATH.
Prior to testing the switchboard, turn off all control power devices
in the switchboard to prevent damage to components. The control
power may be turned off by utilizing the control power switch or by
removing the fuses. Components that use power supplies include
customer metering and certain breaker accessories, and these must
be isolated before testing.
The following label will appear on the equipment:
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