/PERATING INSTRUCTIONS
3*
6
# ' #
&OR DEFINITE TIME DIRECTIONAL OVERCURRENT PROTECTION
ONLY
0ICK UP VALUE OF THE OVERCURRENT STAGE )
%
FOR EARTH FAULTS
3ETTING RANGE
TO
|
)
.
AND
0
NO PICK UP WITH )
%
$)2 FOR EARTH FAULTS
)% $)2
))N
m
n
4RIP TIME DELAY FOR THE OVERCURRENT STAGE )
%
3ETTING RANGE
S TO
S
AND
0
NO TRIP WITH )
%
$)2 FOR EARTH FAULTS
4 )% $)2
S
m
n
!DDRESSES TO ARE RELEVANT ONLY IN CASE AN
INVERSE
TIME CHARACTERISTIC HAS BEEN CHOSEN UNDER
ADDRESS /# $)2 %
).6 4)-% )%#
OR
).6
4)-% !.3)
3ECTION
)T MUST BE CONSIDERED THAT ACCORDING TO )%#
OR !.3))%%% THE PROTECTION PICKS UP ONLY WHEN
TIMES THE SET VALUE IS EXCEEDED
$EPENDING ON THE SELECTED CHARACTERISTICS THE TIME
MULTIPLIERS CAN BE FOUND UNDER ADDRESS FOR THE
CHARACTERISTICS ACCORDING )%# AND THE USER SPECIFIED
CHARACTERISTIC OR UNDER ADDRESS FOR THE CHAR
ACTERISTICS ACCORDING TO !.3))%%%
)F THE OVERCURRENT STAGE )%P $)2 IS NOT USED THE
PICK UP VALUE )%P $)2 CAN BE SET TO
0
SO THAT THE
STAGE IS COMPLETELY INEFFECTIVE 7HEN SETTING ONLY
THE TIME MULTIPLIER 4 )%P OR $ )%P TO
0
THE STAGE
OPERATES AND ANNUNCIATES PICK UP BUT DOES NOT TRIP
BECAUSE THE TIME WILL NEVER ELAPSE
&OR INVERSE TIME DIRECTIONAL OVERCURRENT PROTECTION
ONLY
0ICK UP VALUE OF THE INVERSE TIME DIRECTIONAL OVERCURRENT
STAGE )
%P $)2
FOR EARTH FAULTS
3ETTING RANGE
TO
|
)
.
AND
0
NO PICK UP WITH )
%P $)2
FOR EARTH FAULTS
)%P $)2
))N
m
n
4IME MULTIPLIER FOR THE INVERSE TIME OVERCURRENT STAGE )
%P
ACCORDING TO
).6 4)-% )%#
OR
53%2 #(!2!#4%2
AD
DRESS
3ETTING RANGE
S TO
S
AND
0
NO TRIP WITH )
%P $)2
FOR EARTH FAULTS
4 )%P $)2
S
m
n
$ )%P $)2
m
n
4IME MULTIPLIER FOR THE INVERSE TIME OVERCURRENT STAGE )
%P
ACCORDING TO
).6 4)-% !.3)
ADDRESS
3ETTING RANGE
TO
AND
0
NO TRIP WITH )
%P $)2
FOR EARTH FAULTS
7ITH THE DEFINITE TIME CHARACTERISTIC THE FUNDAMENTAL
WAVES OF THE MEASURED CURRENTS ARE EVALUATED FOR
PICK UP 7HEN ONE OF THE
INVERSE TIME
CHARACTERIS
TICS IS SELECTED A CHOICE CAN BE MADE WHETHER THE
&5.$!-%.4!,
WAVES OF THE MEASURED CURRENTS ARE
FORMED FOR EVALUATION OR IF THE
425% 2-3
VALUES ARE
CALCULATED !S THE RELAY IS USED AS SHORT CIRCUIT PRO
TECTION THE PRESET VALUE IS RECOMMENDED )F THE TIME
GRADING IS TO BE COORDINATED WITH CONVENTIONAL RE
LAYS WHICH OPERATE WITH TRUE RMS VALUES THEN
425% 2-3
MAY BE ADVANTAGEOUS ADDRESS
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