/PERATING INSTRUCTIONS
3*
6
# ' #
3ETTINGS FOR OVERVOLTAGE PROTECTION
ADDRESS BLOCK
/6%2
6/,4!'%
"EGINNING OF THE BLOCK /VERVOLTAGE PROTECTION
2
/6%26/,4'
/&&
/.
3WITCHING
/.
OF THE OVERVOLTAGE PROTECTION
3WITCHING
/&&
OF THE OVERVOLTAGE PROTECTION
OVERVOLTAGE PROTECTION OPERATES BUT ISSUES
!,!2-
/.,9
NO TRIP NO FAULT EVENT
!,!2- /.,9
.
n
5NDER ADDRESS IT HAS BEEN DETERMINED WHETH
ER PHASE TO EARTH VOLTAGES OR PHASE TO PHASE
VOLTAGES ARE CONNECTED TO THE RELAY AS MEASURING
QUANTITIES AND WHICH VOLTAGES SHALL BE EVALUATED
7HEN PHASE TO EARTH VOLTAGES ARE CONNECTED
THEN THE RELAY CAN CALCULATE THE PHASE TO PHASE
VOLTAGES AND USE THEM OPTIONALLY FOR CALCULATION BY
THE PROTECTION FUNCTION TOO $EPENDENT ON THE CON
FIGURATION UNDER ADDRESS ONLY THE RELEVANT PA
RAMETERS ADDRESS FOR PHASE TO EARTH VOLT
AGES OR FOR PHASE TO PHASE VOLTAGES ARE
SHOWN
&OR THE SETTINGS NO GENERALLY APPLICABLE VALUES CAN
BE GIVEN 4AKING INTO ACCOUNT THAT THE PROTECTION
SHALL IN THE FIRST PLACE PREVENT SWITCHGEAR AND CON
SUMERS FROM EXCESSIVE INSULATION STRESS THE SETTING
VALUES WILL BE BETWEEN AND OF THE RATED
VOLTAGE 4HE TIME DELAY HAS TO BE SELECTED SUCH THAT
TRIPPING FOR PERMISSIBLE SHORT TIME VOLTAGE PEAKS IS
AVOIDED
4HE SET TIME 4 5 IS AN ADDITIONAL TIME DELAY
WHICH DOES NOT INCLUDE THE PROTECTION FUNCTION S IN
HERENT OPERATING TIME
5 0( %
6
0ICK UP THRESHOLD OF THE OVERVOLTAGE PROTECTION
WHEN THE PHASE TO GROUND VOLTAGES ARE PRO
CESSED
3ETTING RANGE
6 TO
6
m
n
5 0( 0(
6
0ICK UP THRESHOLD OF THE OVERVOLTAGE PROTECTION
WHEN THE PHASE TO PHASE VOLTAGES ARE PRO
CESSED
3ETTING RANGE
6 TO
6
m
n
4 5
S
4RIP DELAY OF OVERVOLTAGE STAGE 5
3ETTING RANGE
S TO
S
AND
0
NO TRIP WITH 5
m
n
4HE 5 STAGE CAN BE MADE DEPENDENT ON A CURRENT
CRITERION 7HEN THE CURRENT CRITERION IS ACTIVATED UN
DER ADDRESS THEN THE RELEASE CONDITION OF THE
CURRENT CRITERION HAS TO BE FULFILLED ADDITIONALLY TO THE
OVERVOLTAGE CONDITION 4HIS MEANS A MINIMUM CUR
RENT WHICH CAN BE PARAMETERIZED ADDRESS
HAS TO FLOW FOR PROTECTION PICK UP 4HE MINIMUM
CURRENT STAGE ,3 ) IS COMMON FOR THIS VOLTAGE PRO
TECTION THE BREAKER FAILURE PROTECTION THE THERMAL
OVERLOAD PROTECTION AND THE RESTART LOCKOUT PROTEC
TION FOR MOTORS
# #2)4 /6
/&&
/.
#URRENT CRITERION OF OVERVOLTAGE PROTECTION IS
SWITCHED
/&&
OR
SWITCHED
/.
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m
n
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