Siemens 7VK512

/PERATING INSTRUCTIONS6+
6
#
' #

,IMIT VALUE 5 FOR THE PERMISSIBLE VOLTAGE DIFFERENCE IN
MAGNITUDE PHASE
PHASE OR PHASE EARTH IN 6
3MALLEST SETTING VALUE
,ARGEST SETTING VALUE
 $%,4! 5
6
6
 6
,IMIT VALUE F FOR THE PERMISSIBLE FREQUENCY DIFFERENCE
IN (Z
3MALLEST SETTING VALUE
,ARGEST SETTING VALUE
 $%,4! F
 (Z
 (Z
 (Z
,IMIT VALUE  FOR THE PERMISSIBLE PHASE ANGLE DIFFER
ENCE IN ^
3MALLEST SETTING VALUE
,ARGEST SETTING VALUE
 $%,4! 0()
 ^
^
 ^
4HE SYNCHRONISM AND VOLTAGE CHECK FUNCTION IN
6+ CAN ALSO GIVE CLOSING COMMAND IN ASYNCH
RONOUS NETWORKS )N THIS CASE CLOSING COMMAND IS
GIVEN SUCH THAT
UNDER CONSIDERATION OF THE CIRCUIT
BREAKER CLOSING TIME ADDRESS 
THE VOLTAGE
PHASORS OF THE LINE AND BUS
BAR VOLTAGES AGREE IN
PHASE AT THE INSTANT WHEN THE BREAKER POLES TOUCH
EACH OTHER
&OR AUTOMATIC RECLOSURE ADDRESS 
$%,F39.# DEFINES THE LIMIT WITHIN WHICH THE FRE
QUENCY DIFFERENCE MUST LIE WHEN THE NETWORKS ARE
REGARDED AS SYNCHRONOUS !BOVE THIS FREQUENCY DIF
FERENCE ASYNCHRONOUS CLOSING IS CARRIED OUT UNDER
CONSIDERATION OF THE PHASE ANGLE DIFFERENCE FRE
QUENCY DIFFERENCE AND THE CIRCUIT BREAKER CLOSING
TIME "ELOW THIS FREQUENCY DIFFERENCE THE SYNCHRO
CHECK CONDITIONS AS SET UNDER ADDRESSES 
 AND  ARE ONLY RELEVANT 4HE SETTING VALUE
OF ADDRESS  MUST LIE BELOW THAT OF ADDRESS 
)F SET TO 0 ASYNCHRONOUS SWITCHING IS SUPPRESSED
FOR AUTOMATIC RECLOSURE
,IMIT VALUE F FOR SYNCHRONOUS AUTO
RECLOSURE
3MALLEST SETTING VALUE
,ARGEST SETTING VALUE
AND 0 NO ASYNCHRONOUS AUTO
RECLOSURE
 $%,F39.#
(Z
 (Z
 (Z
0
4HE FURTHER RELEASE CONDITIONS FOR AUTOMATIC RECLOS
ING ARE SET UNDER ADDRESSES  TO 
 39.#(2 SYNCHRO
CHECK THE CONDITIONS
FOR SYNCHRONISM 5 F AND 
ARE CHECKED BEFORE RECLOSURE
 55 DEAD
BUS CHECK THE FEEDER
5 MUST BE LIVE 5 REFER AD
DRESS  THE BUS
BAR 5
MUST BE DEAD 5 REFER TO AD
DRESS 
 55 DEAD
LINE CHECK THE FEEDER
5 MUST BE DEAD 5 REFER AD
DRESS  THE BUS
BAR 5
MUST BE LIVE 5 REFER TO ADDRESS

 55 DEAD
LINE AND DEAD BUS CHECK
THE FEEDER 5 AND THE BUS
BAR
5 MUST BOTH BE DEAD 5 REFER
TO ADDRESS 
 /6%22)$% AUTOMATIC RECLOSURE IS RELEASED
WITHOUT ANY CHECK
4HE FIVE POSSIBLE RELEASE CONDITIONS ARE INDEPEN
DENT FROM EACH OTHER AND CAN BE COMBINED