Instructional Literature
Page
188
Effective: May 2008
Instructions for the FP-6000 Protective Relay
For more information visit: www.eaton.com
IB02602004E
11.2.3.1 Verifying Current and Voltage Inputs
Using a current source provides a 3-phase input current to the
current transformer input terminals (TB4). See Section 6 for
phase identification and wiring tips. Also provide a 3-phase
voltage input to the unit under test. Refer to the FP-6000 time
current curves. Set the unit’s setpoints as desired and note the
expected trip time as indicated on the trip curve. Apply the test
current and note the start time. Select the “Monitor” button on
the front panel and verify the proper current and voltage inputs.
Polarity and phasing of the currents and voltages must be
considered. Next, note the trip time of the trip coil. The FP-6000
should trip within the time indicated on the time current curves.
For tolerances see the Table of Specifications in Section 3.1.
11.2.3.2 Verify Zone Interlock
Connect the contact of the Zone Interlock output to the contact of
the Zone Interlock input. Verify settings, input current and
expected trip times as mentioned above in Section 11.2.3.1. In the
View Settings menu, verify the Zone Interlock is enabled. Test the
unit by applying current as in the test in 11.2.3.1. Trip times should
be as indicated in Table specification. Remove the short from
Zone Interlock Out to Zone Interlock In. Repeat the previous test.
The trip times should be much faster (around .050 seconds).
The Zone Interlock output can be checked through the use of the
“Test Zone Interlock” menu item from the test menu. A simple
voltmeter can be used for this test. This function is available
under the bottom lower protective cover labeled “Set” and
“Test.” This function is found under Test/Test Zone Interlock
menu. You will have a choice of “Turn on ZI Output” or “Reset ZI
Output.” Move cursor and press Enter to select either mode.
Using a voltmeter, measure the voltage on TB3 connector J3-1
and J3-2. A voltage of 4.5 to 5.0 volts should be measured when
on and then near zero when off.
11.2.3.3 Testing Overvoltage and Undervoltage Protection
Under the View Settings menu, find the setting of both the
undervoltage and overvoltage protection. If the settings are not
as desired then modify it in the setting’s menu under Protection/
Main V Protection. Set the undervoltage to 60 volts and then the
overvoltage to 120 volts, both with no delay. Starting with
100 volts, apply the test voltage to the voltage input terminals
TB2 213-215. Decrease the voltage input to just below 60 V and
the unit should trip on undervoltage, raise the voltage to just over
120 V and the FP-6000 should trip on overvoltage as expected.
11.2.3.4 Testing Trip Monitors
The trip monitor feature status can be viewed under the “Status/
Control” menu - Input status/Trip # Monitor. The trip monitor
circuits can be tested on the bench by simply applying a fused ac
voltage source and series load across the trip relay contacts
TB117 and 118 or TB115 and 116 – see Figure 78. The fuse and
load should limit current to stay within the relay rating in case the
relay contacts are engaged. A 120 Vac indicator lamp can serve
this purpose. With the trip relay open, apply the 120 V source to
trip relay 1. The Trip 1 monitor display should indicate the “on”
status. Remove the source or close the relay and the status
should indicate “off.” Repeat this procedure for the Trip 2 relay.
11.2.4 Self Test Status
The FP-6000 Feeder Protection Relay performs a self-test of the
microprocessor and supporting hardware such as memory and
analog circuitry. To view the results, select the Status/Control
menu then Status/Self Test Status. See the troubleshooting
Section 12.1.4 - Self Test Failure Indication for a detailed
description of each function.
11.2.5 Test Menu
Tests performed under the test menu allow the user to perform
fault simulations and control the state of relays 1 – 6. To access
the test menu functions, lift the protective cover labeled “Set”
and “Test”, press the “Test” button, and enter the unit’s password.
11.2.5.1 Fault Simulation
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. The various functions that can be checked
are:
•
Overvoltage
•
Undervoltage
•
Unbalanced voltage
•
Instantaneous overcurrent
•
Inverse time overcurrent
•
Unbalance current protection
Figure 78. Testing Trip Monitors.
