Daiichi Electronics ASY-96 - Automatic Synchronization Control

ASY‑206‑077
9
6.3Automaticsynchronizationcontrol
6.3.1Incaseofsynchronizingclosingfrombus(receivingside)togenerator.
①Underthebusvoltageinputcondition(AC90to125V)andafterthegeneratorvoltageisstable(more
thanAC80V),automaticsynchronizationisdone.Underunstablevoltagecondition,thecontrolwillstop
anddisplayERROR(E5).(Willautomaticallyreturnwhenthevoltagecomesinwithintherange.)
②Whenvoltageandfrequencyarecontrolwithinthelimits(referto7pagesitem5.1),thedisplayof
phasedifferencedisplayLEDrotatesatthespeedaccordingtoafrequencydifference.
7segmentLEDofvoltage(△V)andfrequency(△F)displaysadifference.
③“60R,60L”outputwillcontrolthedifferenceofbusandgeneratorvoltagewithinthesettingrange
(△V).“LED”△Vturnsonwithintherange.
④“15R,15L”outputwillcontrolthedifferenceofbusandgeneratorvoltagewithinthesettingrange
(△F).“LED”△Fturnsonwithintherange.
⑤Incasethephasedifferenceisatsynchronizingpoint±15°underthesettingrangeinbothvoltage
andfrequencydifference,synchronismchecksignal(±15°)isoutputand“LED”turnson.
⑥Circuitbreakerclosingsignal(25)willbeoutputaheadofsynchronizingpoint,accountingonthe
advancetimeofthecircuitbreakerclosingand“LED”turnson,inordertoclosethecircuitbreaker
atsynchronizingpointunderthesettingrangeinbothvoltageandfrequencydifference.
Thecircuitbreakerinputsignal(25)isOFFafter+200msofadvancetime.(However,ifitcomesupto±
10°withinin200ms,itbecomesanOFF→inputmistake.)
6.3.2Incaseofsynchronizingclosingfromgeneratortobus(receiving).
①Automaticsynchronizationstartcanbedoneunderthebusvoltageinputcondition(AC90to125V)and
“SLOW”sideclosingdesignation(morethanAC80Vingeneratorvoltage)isinput.Thecontrolwillstop
underunstablevoltageconditioninthegeneratorsideand“ERROR”(E5)isdisplayed.
(Willautomaticallyreturnatwhenitcomesinwithintherange.)
<Note>Reversepowerpreventionispossibleby“SLOW”sideclosingdesignation,inthereceivingside
atthetimeofsynchronizingclosing.)
②Whenvoltageandfrequencyarecontrolwithinthelimits(referto7pagesitem5.1),thedisplayof
phasedifferencedisplayLEDrotatesatthespeedaccordingtoafrequencydifference.
7segmentLEDofvoltage(△V)andfrequency(△F)displaysadifference.
③“60R,60L”outputwillcontrolthedifferenceofbusandgeneratorvoltagewithinthesettingrange
(△V).“LED”△Vturnsonwithintherange.
④“15R,15L
”outputwillcontrolthedifferenceofbusandgeneratorvoltagewithinthesettingrange
(0〜‑△F).“LED”△Fturnsonwithintherange.
⑤Incasethephasedifferenceisatsynchronizingpoint±15°underthesettingrangeinbothvoltage
andfrequencydifference,synchronismchecksignal(±15°)isoutputand“LED”turnson.
⑥Circuitbreakerclosingsignal(25)willbeoutputaheadofsynchronizingpoint,accountingonthe
advancetimeofthecircuitbreakerclosingand“LED”turnson,inordertoclosethecircuitbreaker
atsynchronizingpointunderthesettingrangeinbothvoltageandfrequencydifference.
Thecircuitbreakerclosingsignal(25)turnsoffaftertheadvancetimeplus200ms.(Incaseof
closingfailure,itwillturnoffat±10°,whenitcomesupto±10°within200ms.)