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Chapter 8. Alphanumeric Keypad and Display
M7IRDA2003I
7IRD-A/J/M: Distribution Protection & Control Terminal
© ZIV APLICACIONES Y TECNOLOGÍA, S.L.U. 2020
8-6
8.3
Access to Functions Using Key F2
The protection functions can be accessed by the
F2
key. Access is available from the default
screen or the last trip information screen (if the IED is at Protection
[PRO]
). Pressing
F2
will
cause the display of information in a circular window, allowing access to the following
operations:
- Phase Currents and Ground measurements.
- Recloser Status Information and its lock / lockout.
- Reset Last Trip Indication.
- Reset LEDs.
- Reset Number of Recloses Counter.
8.3.1
Last Trip Indication and Recloser Status
If a trip has occurred, the screen displays the associated elements. This information will
displays as follows:
T
means TRIP and the following elements
indicates which elements initiated the last trip. If a
single protection element operated, only the first
line is used. If the protection elements were
involved, both lines are used.
Instantaneous Overcurrent Trip
7IRD-A/M Model: IOC_XXXX
XXXX is replaced by the Phase or Ground elements that have generated the trip. For example,
a Two-Phase-to-Ground Fault (A to B to Ground) produces IOC_ABG.
7IRD-J Model: I1_ XXXX / I2_ XXXX
I1 refers to Instantaneous 1 element; I2 refers to Instantaneous 2 element. XXXX is replaced by
the Phase or Ground elements that have generated the trip.
Time Overcurrent Trip: TOC_XXXX
XXXX is replaced by the Phase or Ground elements that have generated the trip. For example,
a trip due to an A Phase-to-Ground Fault produces TOC_AG.
Open Phase Trip: TEM_F
Residual Current Trip: TEM_R
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Страница 175: ...D List of Illustrations and Tables...