/PERATING INSTRUCTIONS
3*
6
# ' #
4ESTING THE VOLTAGE PROTECTION
FUNCTIONS
4HE FUNCTIONS UNDERVOLTAGE AND OVERVOLTAGE PROTEC
TION CAN BE TESTED ONLY WHEN THEY ARE SWITCHED AC
TIVE WHAT IS NOT THE CASE UPON DELIVERY ADDRESS
5.$%26/,4'
/.
RESP ADDRESS
/6%26/,4'
/.
AND WHEN THE VOLTAGE PROTEC
TION IS CONFIGURED
%8)34
ADDRESS SEE 3ECTION
&OR THE UNDERVOLTAGE PROTECTION THE SMALLEST OF THE
THREE MEASURED VOLTAGES IS USED FOR THE OVERVOLTAGE
PROTECTION THE LARGEST 4HEREFORE A SINGLE PHASE
TEST IS SUFFICIENT FOR THE OVERVOLTAGE PROTECTION )N THE
UNDERVOLTAGE PROTECTION THE PICK UP VALUE CAN ONLY
BE MEASURED WHEN AT FIRST ALL THREE PHASE VOLTAGES
ARE ABOVE THE PICK UP THRESHOLD 4HEREFORE A
THREE PHASE MEASUREMENT IS RECOMMENDED )T IS
HOWEVER ALSO POSSIBLE TO FEED ALL THREE VOLTAGE IN
PUTS IN PARALLEL WITH A SINGLE PHASE VOLTAGE
)T HAS TO BE NOTED THAT THE CONNECTED VOLTAGES ARE
NOT NECESSARILY IDENTICAL WITH THOSE THAT ARE TAKEN FOR
THE EVALUATION 4HERE IS AN OPTION TO EVALUATE THE
CONNECTED PHASE TO EARTH VOLTAGES OR TO CALCULATE
AND EVALUATE THE CORRESPONDING PHASE TO PHASE
VOLTAGES IN THE RELAY ADDRESS )N LATTER CASE
THE SELECTED PICK UP VALUES REFER TO PHASE TO
PHASE VOLTAGES &OR A TEST OF THE PICK UP VALUES WITH
THREE PHASE CONNECTION THE PHASE TO PHASE
VOLTAGE MUST BE MEASURED THEREFORE
4EST VOLTAGES LARGER THAN 6 MAY OVER
LOAD AND DAMAGE THE RELAY IF APPLIED CON
TINUOUSLY REFER TO 3ECTION FOR OVER
LOAD CAPABILITY
#AUTION
5NDERVOLTAGE AS WELL AS OVERVOLTAGE PROTECTION CAN
BE COMBINED WITH A CURRENT CRITERIA 7HEN THE CUR
RENT CRITERION IS SWITCHED ON THEN THE RELEASE CONDI
TION OF THE CURRENT CRITERION MUST BE FULFILLED IN ADDI
TION TO THE VOLTAGE CRITERION FOR PROTECTION PICK UP
4HE TIME DELAYS ARE TESTED FOR OVERVOLTAGE WITH AP
PROXIMATELY TIME PICK UP VALUE FOR UNDERVOL
TAGE BY SWITCHING THE VOLTAGE TO ZERO )T IS RECALLED
THAT THE SET TIMES ARE PURE DELAY TIMES OPERATING
TIMES OF THE MEASUREMENT FUNCTIONS ARE NOT IN
CLUDED
3WITCH VOLTAGE TO TIMES PICK UP VALUE 5 AD
DRESS RESP
R
ANNUNCIATION
5 &AULT
OR
5 CC &AULT
IF
THE CURRENT CRITERION IS SWITCHED ON AND FULFILLED
UPON DELIVERY ,%$ RELAY PICK UP
R
AFTER 4 5 S ADDRESS ANNUNCIATION
5 4RIP
,%$ AND SIGNAL RELAY
R
COMMAND RELAY
.OTE
7HEN THE UNDERVOLTAGE PROTECTION IS ACTIVATED
ADDRESS
/.
WHICH IS NOT THE CASE UPON
DELIVERY AND NO MEASURING VOLTAGE IS PRESENT THEN
THE UNDERVOLTAGE CRITERION IS IMMEDIATELY FULFILLED
AND THE PROTECTION PICKS UP !S NO OPERATION IS POS
SIBLE DURING A PICK UP CONDITION A MEASURING VOLT
AGE ABOVE THE RESET THRESHOLD OF THE UNDERVOLTAGE
PROTECTION WOULD HAVE TO BE APPLIED TO ALLOW ACCESS
TO THE OPERATION FUNCTIONS )F THIS IS NOT FEASIBLE FROM
THE SWITCHGEAR SIDE OR TOO COMPLICATED THE UNDER
VOLTAGE PROTECTION MAY BE BLOCKED BY ENERGIZING
BINARY INPUT PRE SET BLOCK UNDERVOLTAGE PRO
TECTION SO THAT THE PICK UP RESETS
7HEN THE CURRENT CRITERION IS ACTIVE ADDRESS
/.
THE PICK UP MAY RESET IN CASE OF MISSING MEA
SURING VOLTAGE EVEN WITHOUT BLOCKING 4HIS HAPPENS
IF THE CURRENT DROPS BELOW A SETTABLE MINIMUM CUR
RENT LIMIT ADDRESS AFTER THE VOLTAGE HAS BEEN
DISCONNECTED
2EDUCE VOLTAGE TO A VALUE BELOW THE SETTING 5 AD
DRESS RESP
R
ANNUNCIATION
5 &AULT
OR
5 CC &AULT
IF
THE CURRENT CRITERION IS SWITCHED ON AND FULFILLED
UPON DELIVERY ,%$ RELAY PICK UP
R
AFTER 4 5 S ADDRESS ANNUNCIATION
5 4RIP
,%$ AND SIGNAL RELAY
R
COMMAND RELAY
$ISCONNECT VOLTAGE
R
ANNUNCIATION
5 &AULT
OR
5 CC
&AULT
IF THE CURRENT CRITERION IS SWITCHED ON AND
FULFILLED
R
AFTER 4 5 S ADDRESS ANNUNCIATION
5 4RIP
#HECK THE 5 STAGE WITH ADDITIONAL START UP
THRESHOLD 4HE START UP CRITERION HAS TO BE ACTI
VATED WHICH IS NOT THE CASE UPON DELIVERY ADDRESS
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