ABB REF 610 Technical Reference Manual page 69

1MRS 755535
Feeder Protection Relay
Technical Reference Manual - ANSI Version
Note!
The number of trips and auto-reclose shots is stored in the non-volatile EEPROM
memory and will thus not be cleared when performing a master reset. The number
of trips can be erased by entering the value 1 and the number of auto-reclose shots
by entering the value 2 into parameter V166.
REF 610 collects data during fault conditions. When all pickup or thermal alarm
signals have been reset or a element trips, the collected data and time stamp will be
stored as "EVENT1" and the previously stored events will move one step forward.
When a sixth event is stored, the oldest event will be cleared.
Table 4.1.12-1 Recorded data
REGISTER Data description
EVENT1
• Phase current la, measured as a multiple of the rated current,
displayed in two registers: the main register and the sub register. When a
element picks up but does not trip, the maximum fault current during the
pick-up period will be stored in both the main register and the sub register.
When a element trips, the fault current at the time of the trip will be stored in
the main register and the maximum fault current during the pick-up period in
the sub register. The same applies to phase currents lb, lc and ln.
• The phase unbalance, I (unbal), as a percentage of the maximum phase
current value. When the element picks up but does not trip, the maximum
phase unbalance value during the pick-up period will be stored. When the
element trips, the fault unbalance at the time of the trip will be stored.
• Thermal level, as a percentage of the maximum thermal level of the cable, at
activation of a pickup or alarm signal. If the thermal protection element has
been set out of operation, dashes will be shown on the LCD and "999" when
read via serial communication.
• The maximum thermal level during the time the pickup or alarm signal was
active, as a percentage of the maximum thermal level of the cable, or in case
of a trip, the thermal level, as a percentage of the maximum thermal level of
the cable, at activation of a trip signal. If the thermal protection element has
been set out of operation, dashes will be shown on the LCD and "999" when
read via serial communication.
• Duration of the pickup of elements 51P, 50P-1, 50P-2, I (unbal), 51N and
50N, the trip of element ARC (local), the trip of element ARC (remote), and
of the external trip. A value other than zero indicates that the corresponding
element has picked up whereas the value 100% indicates that the operate
time of the element has elapsed, i.e. the element has tripped. If the operate
time of a element has elapsed but the element is blocked, the value will be
99% of the set or calculated operate time.
• Trip number in the auto-reclose sequence. The number 1...20 indicates the
order of the trip in the AR sequence. The value 1 indicates the first trip in the
AR sequence, the value 2 the second trip, and so forth. On expiration of the
set reset time, the value will pickup from 1 again. If the AR function has been
set out of operation, the value will always be 1.
• Time stamp for the event. The time when the collected data was stored. The
time stamp is displayed in two registers, one including the date expressed as
yy-mm-dd, and the other including the time expressed as HH.MM; SS.sss.
EVENT 2 Same as EVENT 1.
EVENT 3 Same as EVENT 1.
EVENT 4 Same as EVENT 1.
EVENT 5 Same as EVENT 1.
Number of • The number of times each protection element, 51P, 50P-1, 50P-2, I (unbal),
pickups 51N and 50N, has picked up, counting up to 999.
REF 610
, is
I (CT)
n
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