14
Recorded data
When the relay performs a tripping, the cur-
rent values at the moment of tripping, the du-
ration of the starting for different units and other
parameters are stored in a two place memory
stack. A new operation moves the old values up
to the second place and adds a new value to the
first place of the stack consisting of registers
1...9. Two value pairs are memorized - if a third
trip occurs, the oldest set of values will be lost.
A master reset of the relay erases all the con-
tents of both of the register blocks.
The left-most red digit displays the register ad-
dress and the other three digits the recorded
information.
Register Recorded information
1 Filtered phase current I
L1
(n) measured as a multiple of the rated input current I
n
of
the protective relay. // Event (n-1) value of filtered phase current I
L1
.
2 Filtered phase current I
L2
(n) measured as a multiple of the rated input current I
n
of
the protective relay. // Event (n-1) value of filtered phase current I
L2
.
3 Filtered phase current I
L3
(n) measured as a multiple of the rated input current I
n
of
the protective relay. // Event (n-1) value of filtered phase current I
L3
.
4 Duration of the latest starting situation (n) of overload stage I
a
> as a percentage of
the set operating time t
a
. When the concerned stage has tripped the counter reading
is 100 percentage. // Duration of event (n-1) starting of stage I
a
>. // Number of
startings of the stage I
a
> in the range 0...255.
5 Duration of the latest starting situation (n) of overload stage I
b
> as a percentage of
the operation time-lag . When the concerned stage has tripped the counter reading
is 100 percentage. // Duration of event (n-1) starting of stage I
b
>. // Number of
startings of the stage I
b
> in the range 0...255.
6 Compensated phase unbalance current ∆I
c
(n) measured as a percentage of the rated
input current ∆I
n
of the protective relay. // Uncompensated phase unbalance cur-
rent ∆I (n) measured as a percentage of the rated input current ∆I
n
of the protective
relay. // Event (n-1) value of compensated phase unbalance current ∆I
c
. // Event (n-1)
value of uncompensated phase unbalance current ∆I.
7 Duration of the latest starting situation (n) of stage ∆I
1
> as a percentage of the set
operating time t
∆1
. When the concerned stage has tripped the counter reading is
100 percentage. // Duration of event (n-1) starting of stage ∆I
1
>. // Number of
startings of the stage ∆I
1
> in the range 0...255.
8 Duration of the latest starting situation (n) of stage ∆I
2
> as a percentage of the
operation time-lag. When the concerned stage has tripped the counter reading is
100 percentage. // Duration of event (n-1) starting of stage ∆I
2
>. // Number of
startings of the stage ∆I
2
> in the range 0...255.
9 Duration of the latest starting situation (n) of stage I< as a percentage of the set
operating time t<. When the concerned stage has tripped the counter reading is 100
percentage. // Duration of event (n-1) starting of stage I<. // Number of startings of
the stage I< in the range 0...255.
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