/PERATING INSTRUCTIONS
3*
6
# ' #
3* CAN BE USED AS DEFINITE TIME OVERCURRENT
PROTECTION OR INVERSE TIME OVERCURRENT PROTECTION !
CHOICE CAN BE MADE WHETHER THE INVERSE TIME CHAR
ACTERISTICS MEET THE )%# STANDARDS OR THE !.3) STAN
DARDS4HIS FUNCTION MODE HAS BEEN SELECTED DURING
CONFIGURATION IN 3ECTION ADDRESS )N THIS
BLOCK ONLY THOSE PARAMETERS ARE AVAILABLE WHICH
ARE ASSOCIATED WITH THE FUNCTION MODE OF THE SE
LECTED OVERCURRENT TIME PROTECTION
!DDRESSES AND ARE RELEVANT ONLY IN CASE
THE
DEFINITE TIME
CHARACTERISTIC HAS BEEN CHOSEN UN
DER ADDRESS #(!2!# 0(
$%&).)4% 4)-%
4HE MAXIMUM LOAD CURRENT DETERMINES THE SETTING OF
THE OVERCURRENT STAGE ) 0ICK UP ON OVERLOAD MUST
BE EXCLUDED SINCE THE UNIT OPERATES IN THIS MODE AS
SHORT CIRCUIT PROTECTION WITH ADEQUATE SHORT TRIPPING
TIME AND NOT AS OVERLOAD PROTECTION 4HEREFORE THE
OVERCURRENT STAGE IS SET TO FOR FEEDER LINES
AND FOR TRANSFORMERS OR MOTORS REFERRED TO
MAXIMUM OVER LOAD CURRENT
4HE TIME DELAY 4 ) DEPENDS ON THE GRADING PLAN
FOR THE NETWORK
)F THE OVERCURRENT STAGE ) IS NOT USED THE PICK UP
VALUE ) CAN BE SET TO
0
SO THAT THE STAGE IS COM
PLETELY INEFFECTIVE 7HEN SETTING ONLY THE TIME DELAY
4 ) TO
0
THE STAGE OPERATES AND ANNUNCIATES
PICK UP BUT DOES NOT TRIP BECAUSE THE TIME WILL NEV
ER ELAPSE
&OR DEFINITE TIME OVERCURRENT PROTECTION ONLY
0ICK UP VALUE OF THE OVERCURRENT STAGE ) FOR PHASE FAULTS
3ETTING RANGE
TO
|
)
.
AND
0
NO PICK UP WITH ) FOR PHASE FAULTS
)
))N
m
n
&OR DEFINITE TIME OVERCURRENT PROTECTION ONLY
4RIP TIME DELAY FOR THE OVERCURRENT STAGE )
3ETTING RANGE
S TO
S
AND
0
NO TRIP WITH ) FOR PHASE FAULTS
4 )
S
m
!DDRESSES TO ARE RELEVANT ONLY IN CASE AN
INVERSE TIME
CHARACTERISTIC HAS BEEN CHOSEN UNDER
ADDRESS #(!2!# 0(
).6 4)-% )%#
).6
4)-% !.3)
OR
53%2 #(!2!#4%2
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
IS NOT USED THE PICK UP
VALUE )P CAN BE SET TO
0
SO THAT THE STAGE IS COM
PLETELY INEFFECTIVE 7HEN SETTING ONLY THE TIME MULTI
PLIER 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
FOR PHASE FAULTS
)P
))N
n
ONLY FOR MODEL 3*
J JJJJ
JJJJ
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