Overcurrent Protection in the Bay Unit
191
7SS52 V4 Manual
C53000-G1176-C182-1
This parameter is only displayed if the parameter CHARAC. E (7815/BU) is set to IN-
VERSE TIME.
TIEp The parameter TIEp (1515/BU) is used to set the trip time delay (time multiplier) for
the overcurrent stage of the inverse-time O/C protection.
This parameter is only displayed if the parameter CHARAC. E
(7815/BU) is set to IN-
VERSE TIME.
RMS FORMAT The parameter RMS FORMAT (1516/BU) is used to select the format in which the cur-
rents will be evaluated for the current calculation of the overcurrent stage.
This parameter is only displayed if the parameter CHARAC. E
(7815/BU) is set to IN-
VERSE TIME.
With setting FUNDAMENTAL the fundamental wave of the currents will be evaluated.
With setting TRUE RMS the r.m.s. value of the currents will be evaluated.
MAN.CLOSE The parameter MAN.CLOSE (1521/BU) is used to set whether the trip time delay for
the overcurrent or high-set current stage for the earth current will be overridden if the
circuit breaker is manually closed.
With setting IE>> UNDELAYED the delay time set with the parameter TIE>> (1503/
BU) will be disregarded.
With setting IE> /IEp UNDELAYED. the delay time set with the parameter TIE>
(1513/BU) will be disregarded.
With setting INEFFECTIVE the delay times set with the parameters TIE>> (1503/
BU) or TIE> (1513/BU) respectively are not disregarded.
5.16.3 Settings of the Bay Unit
Addr. Setting Title Setting Options Default Settings Comments
1201 O/C PHASES ON
OFF
ON O/C protection for phase cur-
rents
1202 I>> 0.05 .. 25.00 I
N
2.00 I
N
Pick-up value of the phase cur-
rents for the high-set stage
1203 TI>> 0.00 .. 60.00 s; +* 0.10 s Trip time delay of the high-set
stage for phase currents
1206 MEAS.REPET. YES
NO
NO Option to set a measurement
repetition
1211 CHARACTER. NORMAL INVERSE
VERY INVERSE
EXTREMELY INVERS
NORMAL IN-
VERSE
Tripping characteristic for the
phase current
1212 I> 0.05 .. 25.00 I
N
1.00 I
N
Pick-up value of the phase cur-
rents for the overcurrent stage
1213 TI> 0.00 .. 60.00 s; +*
infinite
0.50 s Trip time delay of the overcur-
rent stage for phase currents
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