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IB02602004E
For more information visit: www.eaton.com
Instructional Literature
Effective: May 2008
Page
147
Instructions for the FP-6000 Protective Relay
chassis on activated circuits is possible. However depending on
the design of the alarm circuit the healthy alarm may be
engaged.
On removal of the inner chassis verify that all the CT connections
have shorted. Inspect for obvious damage to the connectors both
in the Outer Chassis and at the rear of the Inner Chassis.
Carefully reinsert the chassis, being careful to engage the latches
at the sides into the slots. As the inner chassis is pushed into the
outer chassis the outer frame will capture the latches causing the
release handles to pop in and out. When the inner chassis is fully
inserted it should be ~ flush with the outer chassis mounting
frame. Verify that the FP-6000 energizes and proper metering
display is activated.
7.6 Trip Test with Built-in Function
The FP-6000 has a self-test function, which allows voltages and
currents, both rms and phasor values, to be applied to the
internal firmware in a simulation process. The unit can be placed
in a trip or no trip mode to verify coordination trip times,
demonstrate tripping and indicate trip times under user selected
overload conditions. Refer to Section 11.2.5.1.
7.7 Checks After Closing the Breaker
•
Disconnect all control power from the system.
•
Reconnect the breaker lead to FP-6000 trip relay terminals 116
and 118.
•
Clear away any loose or foreign objects.
•
Clear all personnel from the area of the breaker and loads.
•
Turn on all control power.
•
Make sure the FP-6000 green Operational LED is flashing on
and off, and that the display shows the normal Currents/
Voltages values.
•
Follow any startup procedures for the load equipment.
•
Close the breaker, the external Start Switch or contacts.
•
Using the information supplied by the application engineer or
equipment manufacturer, verify that the breaker is operating
properly and the load is energized.
•
With a load on the breaker, use a clamp-on type ammeter to
measure the ac current on each of the line phases.
•
Verify that the IA, IB, and IC currents as indicated by the
FP-6000 on the Default Monitor Page are within about 5% of
the ammeter values.
•
Verify the voltage and current phase rotation and the polarity
of the wiring for correctness.
•
If the CTs are far from the optimum ratio, errors may be larger.
This test is intended to show incorrectly set CT ratios or faulty
wiring, rather than precision of measurements.
•
If the IX CT is connected, check the magnitude of IX. Consider
the cause of any anomalies. For instance, if ground current is
being measured, investigate the cause of any abnormal
ground leakage current flow.
•
If a PowerNet data communications host is connected, upload
an oscillographic sample of the operating currents and
voltages. Review for inconsistencies or problems.
•
It is wise to verify the ability of the FP-6000 to open the breaker
and trip the load. The easiest way is by remote trip, via remote
trip contact or data communications. Many other internal
functions can be manipulated to force a relay trip.
•
Verify if the 52a and/or 52b contacts are used and the Breaker
Closed LED lights.
•
Verify that the trip coil monitor function is reading trickle
current around trip 1 relay.
•
Verify the phasor angles have correct polarity between voltage
and current inputs.
CAUTION
IT IS POSSIBLE TO GET A TRIP ON THE INITIAL CLOSING OF THE
BREAKER DUE TO MIS-PROGRAMMING AND WIRING PROBLEMS
AND ALL PRECAUTIONS SHOULD BE TAKEN IN ANTICIPATION OF A
TRIP EVENT.
CAUTION
THE BREAKER CONTROL CIRCUIT IS TO BE RECONNECTED. AT THIS
TIME THE LOAD(S) ASSOCIATED WITH THE APPLICATION MAY BE
STARTED. IT IS IMPORTANT TO ENSURE THAT ALL SAFETY PRE-
CAUTIONS ASSOCIATED WITH THE LOAD EQUIPMENT AND THE
ASSOCIATED MECHANISM BE TAKEN. FAILURE TO DO SO CAN
RESULT IN SERIOUS OR FATAL INJURY AND/OR EQUIPMENT
DAMAGE.