Siemens SIPROTEC 7SJ531 - Page 43

4ECHNICAL DATA3*
6

#
' #
#HARACTERISTICS INVERSE TIME USER SPECIFIED CHARACTERISTIC
DEFINED BY MAX  PAIRS OF VALUES OF
CURRENT AND DELAY TIME
-EASURING TOLERANCE ACCORDING 6$%  PART 
DEFINITE TIME   OF SET VALUE
INVERSE TIME PICK UP AT   ))
P
 
4IME TOLERANCES
DEFINITE TIME   OF SET VALUE OR  MS
INVERSE TIME WITHIN LINEAR RANGE   OF THEORETICAL VALUE FOR   ))
%%P
 
   CURRENT TOLERANCE AT LEAST  MS
$ROP
OFF RATIO APPROX 
.OTE $UE TO THE HIGH SENSITIVITY OF THIS PROTECTION FUNCTION THE MEASURED CURRENT INPUT HAS RESTRICTED LINEARITY
RANGE OF  TO  ! 4HE FUNCTION WILL RESET ABOVE  !
4HE SET TIMES ARE PURE DELAY TIMES IN DEFINITE TIME MODE
$IRECTIONAL DETERMINATION


-EASUREMENT WITH )
%
 

)

 AND 5
%
 Q

5


-EASURING PRINCIPLE MEASUREMENT OF ACTIVE AND REACTIVE POWER
-EASUREMENT RELEASE )
%% $)2%#
 ! TO  ! STEPS  !
$IRECTIONAL CHARACTERISTIC )
%
| COS  OR )
%
| SIN 
ADDITIONAL PHASE SHIFTING q 
POSSIBLE
#4 ANGLE ERROR CORRECTION OF SUMMATION CT 
TO  STEPS   FOR  OPERATING POINTS
FOR COMPENSATED SYSTEMS OF THE CT CHARACTERISTIC
-EASURING TOLERANCE ACCORDING 6$%  PART    OF SET VALUE
FOR )
%
  !
!NGLE TOLERANCE IF 5
EN
VOLTAGE CONNECTED  FOR )
%
  ! TO  !

FOR )
%
  !
!NGLE TOLERANCE IF 5
EN
VOLTAGE NOT CONNECTED 
.OTE $UE TO THE HIGH SENSITIVITY OF THIS PROTECTION FUNCTION THE MEASURED CURRENT INPUT HAS RESTRICTED LINEARITY
RANGE OF  TO  ! .O CORRECT DIRECTIONAL DECISION IS ENSURED FOR CURRENTS ABOVE  ! AT THIS CURRENT INPUT

 ONLY FOR MODEL 3* J JJJJ JJJJ
www . ElectricalPartManuals . com