IM30-SA
Doc. N° MO-0089-ING
Rev.
1
FW:
1.01
Pag.
12
of
25
Copyright 2010 - Microener
10.3 - LASTTRIP
Display of the function which caused the tripping of the relay plus values of the parameters at the
moment of tripping. The last five events are recorded
The memory buffer is refreshed at each new relay tripping with a decreasing numbering (FIFO logic).
Display
Description
LastTr-x
Indication of the recorded event (x= 0 to 4)
Example: Last event (LastTr -0) - Last but one event (LastTr-1) - etc...
F:
xxxxxx
Function which produced the event being displayed and faulty phase in case of phase
current element’s trip
I> ph A,B,C; I>> ph A,B,C; O>; O>>.
IA
xxxx
In
Current of phase A. (value recorded at the moment of tipping)
IB
xxxx
In
Current of phase B. (as above)
IC
xxxx
In
Current of phase C. (as above)
Io
xxxx
On
Earth fault current. (as above)
I
2
xxxxx
In
Negative Sequence component of current.
10.4 - TRIP NUM
Counters of the number of operations for each of the relay functions.
The memory is non-volatile and can be cancelled only with a secret procedure.
Display
Description
I>
xxxx
Trip number of
Low set overcurrent time delayed element [tI>].
I>>
xxxx
Trip number of
High set overcurrent time delayed element [tI>>].
Io>
xxxx
Trip number of
Low set earth fault time delayed element
[tO>].
Io>>
xxxx
Trip number of
High set earth fault time delayed element [tO>>].
So>
xxxxx
Trip number of Sensitive earth fault time delayed element [tSo>].
I
2
xxxxx
Trip number of Negative Sequence O/C time delayed element [tI
2
>].
