Instructional Literature
Page
162
Effective: May 2008
Instructions for the FP-6000 Protective Relay
For more information visit: www.eaton.com
IB02602004E
The Trigger setpoint determines what will start the data logging
process. If set to Auto then upon saving and exiting the program
mode the data logging will begin. If Manual is selected then any
one of the following events will cause the data logging function
to start:
•
Contact Input – One of the contact inputs can be configured to
Data log Trigger, when this input becomes true the data
logging function is started.
•
Control Pushbutton – A data logging function is started from
the FP-6000 front faceplate. This can be accomplished by
pushing the “Status/Control” button, selecting Control and
pressing enter, selecting Trigger Datalogger and pressing
enter, and pressing enter a second time. This function is useful
for testing the data logging function.
•
Communication Channel – Using external communications
channel to initiate the data logging function.
The Interval setpoint determines how often data will be recorded.
This parameter along with the knowledge that the data will be
sampled a maximum of 1024 times sets the period of time that
the logging will take place without loss of information. If set to
1 second, the total time of recording of data without loss is
17 minutes and 4 seconds. If set to 3600 seconds, the total time of
recording of data without loss is 42 days, 16 hours.
The Value setpoints, eight in all, describe what data values are
recorded at each interval. Eight data measurements can be
selected from the following:
•
All current inputs (IA, IB, IC, IX, IR, Iavg).
•
All current sequential components (I0, I1, I2).
•
All phase current demand (IA Demand, IB Demand, IC
Demand).
•
All phase current Total Harmonic Distortion (IA THD, IB THD, IC
THD).
•
All Wye voltage inputs (VA, VB, VC, VLNavg,). Use only if
voltage connection is Wye.
•
All phase-to-phase voltage inputs (VAB, VBC, VCA, VLLavg).
•
Auxiliary voltage (VX).
•
All voltage sequential components (V0, V1, V2).
•
All Wye voltage Total Harmonic Distortion (VA THD, VB THD,
VC THD). Use only if voltage connection is Wye.
•
All Delta Voltage Total Harmonic Distortion (VAB THD, VBC
THD, VCA THD). Use only if voltage connection is Delta.
•
All power measurements (W, var, VA).
•
All power demand measurements (W, var, VA).
•
All power factor measurements (Dsp PF, App PF).
•
The voltage frequency.
•
All contact inputs (Cin1 – Cin8).
•
All logic block outputs (LB1 – LB6).
•
All timer block outputs (TB1 – TB6).
•
RTD 1 to 11 temperatures.
If the data logger is programmed to 1-Pass then a trigger will not
be recognized until the data logger is reset. The data logger can
have its data reset in one of the following ways:
•
Front Panel Reset – Press the reset button until the “Reset
Main” menu is displayed, select “Datalog Trigger” and press
enter, press enter again.
•
Communication – A reset is performed through an external
communication command being given.
8.12 Autoreclose Logic
Majority of the faults on transmission or distribution lines is
transient, and such faults are usually caused by lighting, or swing
wires, or some foreign floating objects. Once the fault is cleared
and the line is deionized, the service can be restored by the
autoreclose relay or recloser with a high successful rate. The
application of autoreclose function requires careful
considerations of many factors. These factors may include
system configurations, load characteristic, downstream
protections, local and downstream breaker characteristics, and
etc.
The FP-6000 provides a very comprehensive yet flexible
autoreclose function that meets the requirements of different
applications. It is so flexible that the user must be careful when
configuring the autoreclose function. The user should
understand the logic first before making the setting changes.
The autoreclose logic is involved in three mutually exclusive
states: Ready, Run, and Lockout. The Ready is a state where the
following conditions are met:
•
Autoreclose enabled
•
Four cycles after power up, neither in Run nor in Lockout state
•
Autoreclose blocking conditions are present and
•
Reclose shot count is equal to zero.
The Run is a state where the following conditions are met:
•
Reclose shot count is greater than zero, but less than or equal
to the maximum allowable shots
•
Not in Lockout state
•
Previous state is Ready
•
Autoreclose blocking conditions are present within the
autoreclose timeout limit and
•
Not in the Auto Zone Coordination (AZC) process.
The Lockout is a state where the following conditions are met:
•
Previous state can be Ready or Run
•
Breaker failure detected
•
Remote/manual trip blocking timeout
•
Undervoltage blocking timeout
•
External autoreclose blocking timeout
•
External autoreclose lockout signal is present
•
Reclose failure (incomplete sequence)
•
Reclose shot counts per hour exceed the limit and
•
Breaker wear exceeds the safety or lockout level.
Transitions between Ready and Run, Ready and Lockout are
bilaterally permissible, while the transition from Run to Lockout
is permissible, but not in the reverse direction. When the
autoreclose is disabled, the autoreclose state will remain in Off
mode. Once it is enabled and if undervoltage blocking is absent,
the autoreclose state will transit from Off to Ready after four
cycles.