-ETHOD OF OPERATION3*
6
#
' #
#ONTROL OF SWITCHING DEVICES
'ENERAL
! CONTROL FUNCTION IS INCORPORATED IN 3)02/4%#
3* WHICH PERMITS THE CLOSING AND OPENING OF
CIRCUIT BREAKERS BY MEANS OF SEPARATE CONTROL ELE
MENTS IN THE RELAY 4HE MOMENTARY SWITCHING STATE OF
ALL SWITCHING DEVICES IS SHOWN IN A FEEDER MIMIC DIA
GRAM ON THE INTEGRATED GRAPHICAL DISPLAY ON THE
RELAY
S FRONT PLATE /UT OF A LARGE NUMBER OF MIMIC
DIAGRAMS SEE !PPENDIX % A SUITABLE ONE CAN BE SE
LECTED FOR THE SWITCHGEAR
! PAIR OF AUXILIARY CONTACTS ON AND OFF IS REQUIRED
FROM EACH SWITCHING DEVICE WHICH SHALL BE DIS
PLAYED 4HESE FEEDBACK SIGNALS ARE ASSIGNED TO THE
CORRESPONDING BINARY INPUTS OF THE 3* 4HE AS
SIGNMENT OF THE SWITCH STATE FEEDBACK SIGNALS IS
FIXED FOR EACH MIMIC DIAGRAM AND CANNOT BE MAR
SHALLED &OR BREAKERS THE ITEM DESIGNATION
1NN IS
USED WHICH IS ESTABLISHED IN $).
&IGURE SHOWS A CONNECTION EXAMPLE AND ALL
RELEVANT BREAKER DESIGNATIONS
!LL POSITION FEEDBACK SIGNALS ARE MONITORED FOR PLAU
SIBILITY )F NEITHER THE CHECK
BACK SIGNAL /. NOR /&&
IS RECEIVED FROM A SWITCHING DEVICE 1NN A FAILURE IN
DICATION
ERROR POS IS SENT AFTER A PARAMETER
IZED TIME 4HE SWITCH HAS TO BE IN ONE OF THE TWO POSI
TIONS EXCEPT FOR THE INSTANT WHEN SWITCHING IS PER
FORMED )N PARALLEL TO THE INDIVIDUAL FAILURE INDICATION
A COLLECTIVE ALARM
ERR#"$# POS IS CREATED WITH
THE FIRST INDICATION WHICH IS GIVEN 4HIS SIGNAL DISAP
PEARS WHEN ALL SWITCHING DEVICES HAVE AGAIN RE
SUMED A DEFINED STATE
0ICK UP OF THE MONITORING OF THE FEEDBACK SIGNAL
DOES NOT CREATE AN ALARM AS LONG AS THE SWITCHING
COMMAND IS UNDER EXECUTION
-
3*
$#0 1 OPD
$#0 1 CLD
FUNCTION
CONTROL
#"0 1 OPD
#"0 1 CLD
$#0 DISCONNECTOR POSI
TION
#"0 CIRCUIT BREAKER POSI
TION
AUX CONTACT
DISCONNECTOR
POSITION
CLOSED
AUX CONTACT
BREAKER POSITION
OPENED
DISCONNECTOR
CIRCUIT BREAKER
,
,
,
,
BUS BAR
CIRCUIT BREAKER 1
LOAD DISCONNECTOR 1 1 IN FORMER VERSION
BUS
BAR DISCONNECTOR 1
BUS
BAR DISCONNECTOR 1
MAINTENANCE EARTHING DISCONNECTOR 1
MEASURING EARTHING DISCONNECTOR 1
FEEDER EARTHING DISCONNECTOR 1
1
COUPLING DISCONNECTOR 1
BUS
BAR EARTHING DISCONNECTOR 1
BUS
BAR EARTHING DISCONNECTOR 1
&IGURE #ONNECTION EXAMPLE FOR FEEDBACK ALARMS IN THE 3* TO THE BAY AND DEVICE DESIGNATIONS
OF POSSIBLE SWITCHING DEVICES
www . ElectricalPartManuals . com
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