/PERATING INSTRUCTIONS
3*
6
# ' #
)F THE DIRECTIONAL OVERCURRENT STAGE ) $)2 IS NOT
USED THE PICK UP VALUE CAN BE SET TO
0
SO THAT THE
STAGE IS COMPLETELY INEFFECTIVE 7HEN SETTING ONLY
THE TIME DELAY 4 ) $)2 TO
0
THE STAGE OPERATES
AND ANNUNCIATES PICK UP BUT DOES NOT TRIP BECAUSE
THE TIME WILL NEVER ELAPSE
&OR DEFINITE TIME DIRECTIONAL OVERCURRENT PROTECTION
ONLY
0ICK UP VALUE OF THE OVERCURRENT STAGE ) FOR PHASE FAULTS
3ETTING RANGE
TO
|
)
.
AND
0
NO PICK UP WITH ) $)2 FOR PHASE FAULTS
) $)2
))N
m
n
&OR DEFINITE TIME DIRECTIONAL OVERCURRENT PROTECTION
ONLY
4RIP TIME DELAY FOR THE OVERCURRENT STAGE )
3ETTING RANGE
S TO
S
AND
0
NO TRIP WITH ) $)2 FOR PHASE FAULTS
4 ) $)2
S
m
n
!DDRESSES TO ARE RELEVANT ONLY IN CASE AN
INVERSE TIME
CHARACTERISTIC HAS BEEN CHOSEN UNDER
ADDRESS /# $)20(
).6 4)-% )%#
OR
).6
4)-% !.3)
REFER TO 3ECTION
)T MUST BE CONSIDERED THAT ACCORDING TO )%#
OR !.3))%%% THE PROTECTION PICKS UP ONLY WHEN AT
LEAST 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 OVERCURRENT PROTECTION ONLY
0ICK UP VALUE OF THE INVERSE TIME OVERCURRENT STAGE )
P
FOR
PHASE FAULTS
3ETTING RANGE
TO
|
)
.
AND
0
NO PICK UP WITH )
P $)2
FOR PHASE FAULTS
4IME MULTIPLIER FOR THE INVERSE TIME OVERCURRENT STAGE )
P
ACCORDING TO
)%#
OR
53%2 #(!2!#4%2
ADDRESS
3ETTING RANGE
S TO
S
AND
0
NO TRIP WITH )
P $)2
FOR PHASE FAULTS
)P $)2
))N
4 )P $)2
S
m
n
m
n
4IME MULTIPLIER FOR THE INVERSE TIME OVERCURRENT STAGE )
P
ACCORDING TO
!.3)
ADDRESS
3ETTING RANGE
TO
AND
0
NO TRIP WITH )
P
FOR PHASE FAULTS
$ )P $)2
m
n
7ITH THE DEFINITE TIME CHARACTERISTIC THE FUNDAMENTAL
WAVES OF THE MEASURED CURRENTS ARE EVALUATED FOR
PICK UP 7HEN ONE OF THE
INVERSE TIME
CHARACTERIS
TICS IS SELECTED A CHOICE CAN BE MADE WHETHER THE
&5.$!-%.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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