Technical information

J-30
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Timers & control relays
Monitoringdevices
Voltage monitor Frequency monitor Current window comparator Current monitor
DVM DFM DCW / DCW15 DCM / DCM15
Monitorsaseperatevoltagethansupplyconfigurable
for‘over”or“under”voltagemonitoringviafront
mounted selector.
Overvoltage
Therelayoperatesaslongasmonitoredvoltage
remainsbelowthepre-setlimit.Ifthelimitisexceeded
therelayreleasesandwillonlyoperateagainwhen
monitoredvoltageexceedsthepre-sethysteresis
percentage5-50%.(Differencebetweentripand
recoverylevel.)
Undervoltage
Therelayoperatesaslongasmonitoredvoltage
remainsabovethepre-setlimit.Ifthevoltagefalls
belowthelimit,therelayreleasesandwillonlyoperate
agianwhenmonitoredvoltageexceedsthepre-set
hysteresispercentage5-50%.(Differencebetweentrip
andrecoverylevel.)
Delays:canbeactivatedviafrontselector
1) NoDelay
Measurement start immediately and relay responds
directly(normalacquisitiondelaysapply)
2) Startupdelay10sec
 Onapplicationofsupplyrelayoperatesimmediately
(LEDflashes)monitoringonlystartsafter10sec
(powerLEDsteadies)
3) 180secRecoverydelay
 Onapplicationofsupplyrelaydoesnotoperate
(powerLEDflashes)for180secwhereafterrelay
operates(powerLEDsteadies).Ifrelaytripsthe
180secdelayisactivated(powerLEDflashes)
beforerelayoperatesagain.
4) Reactiondelay10sec
 RelayoperatesimmediatelyandpowerLEDflashes
whenpowersupplyisapplied.Measurementstarts
after10secandpowerLEDstopsflashing.The
relaywillonlyreleaseafterafaultconditionhas
beenpresentedfor10sec.
Alatchfacilitycanbeenabledbybridgingterminals
8and10
Therelayoperatesaslongasthemeasuredfrequency
remainswithinthepre-set“upper”and“lower”limits.If
monitoredfrequencyexceedsthe“upper”orfallbelow
thelowerlimitstherelaywillrelease.
Delays:canbeactivatedviafrontselector
1) NoDelay
Measurement start immediately and relay responds
directly(normalacquisitiondelaysapply)
2) Startupdelay10sec
 Onapplicationofsupplyrelayoperatesimmediately
(LEDflashes)monitoringonlystartsafter10sec
(powerLEDsteadies)
3) 180secRecoverydelay
 Onapplicationofsupplyrelaydoesnotoperate
(powerLEDflashes)for180secwhereafterrelay
operates(powerLEDsteadies).Ifrelaytripsthe
180secdelayisactivated(powerLEDflashes)
beforerelayoperatesagain.
4) Reactiondelay10sec
 RelayoperatesimmediatelyandpowerLEDflashes
whenpowersupplyisapplied.Measurementstarts
after10secandpowerLEDstopsflashing.The
relaywillonlyreleaseafterafaultconditionhas
beenpresentedfor10sec.
Alatchfacilitycanbeenabledbybridgingterminals
8and10
DirectlyinterfaceswithconventionalCTs(5Asecodary).
Therelayoperatesaslongasthemonitoredcurrent
remainswithinthepre-set‘upper”and“lower”limits.If
themonitoredcurrentexceedsorfallsbelowthepre-set
limits,therelaywillrelease.
DCW15canmonitorupto15Adirectly.
Delays:canbeactivatedviafrontselector
1) NoDelay
Measurement start immediately and relay responds
directly(normalacquisitiondelaysapply)
2) Startupdelay10sec
 Onapplicationofsupplyrelayoperatesimmediately
(LEDflashes)monitoringonlystartsafter10sec
(powerLEDsteadies)
3) 180secRecoverydelay
 Onapplicationofsupplyrelaydoesnotoperate
(powerLEDflashes)for180secwhereafterrelay
operates(powerLEDsteadies).Ifrelaytripsthe
180secdelayisactivated(powerLEDflashes)
beforerelayoperatesagain.
4) Reactiondelay10sec
 RelayoperatesimmediatelyandpowerLEDflashes
whenpowersupplyisapplied.Measurementstarts
after10secandpowerLEDstopsflashing.The
relaywillonlyreleaseafterafaultconditionhas
beenpresentedfor10sec.
Alatchfacilitycanbeenabledbybridgingterminals
8and10
5A/15ADCcurrentalsoavailable
DirectlyinterfaceswithconventionalCTs(5Asecodary).
Configurablefor‘over”or“under”currentmonitoringvia
frontmountedselector.
DCM15canmonitorupto15Adirectly.
Over current
Therelayoperatesaslongasmonitoredcurrent
remainsbelowthepre-setlimit.Ifthelimitexceeded
therelayreleasesandwillonlyoperateagainwhen
monitoredcurrentreducesbythepre-sethysteresis
percentage5-50%.
(differencebetweentripandrecoverylevel)
Undercurrent
Therelayoperatesaslongasmonitoredcurrent
remainsabovethepre-setlimit.Ifthecurrentfalls
belowthelimittherelayreleasesandwillonlyoperate
againwhenmonitoredcurrentexceedsbythepre-set
hysteresispercentage5-50%.(differencebetweentrip
andrecoverylevel)
Delays:canbeactivatedviafrontselector
1) NoDelay
Measurement start immediately and relay responds
directly(normalacquisitiondelaysapply)
2) Startupdelay10sec
 Onapplicationofsupplyrelayoperatesimmediately
(LEDflashes)monitoringonlystartsafter10sec
(powerLEDsteadies)
3) 180secRecoverydelay
 Onapplicationofsupplyrelaydoesnotoperate
(powerLEDflashes)for180secwhereafterrelay
operates(powerLEDsteadies).Ifrelaytripsthe
180secdelayisactivated(powerLEDflashes)
beforerelayoperatesagain.
4) Reactiondelay10sec
 RelayoperatesimmediatelyandpowerLEDflashes
whenpowersupplyisapplied.Measurementstarts
after10secandpowerLEDstopsflashing.The
relaywillonlyreleaseafterafaultconditionhas
beenpresentedfor10sec.
Alatchfacilitycanbeenabledbybridgingterminals
8and10
110,230,400Vareequippedwithinternaltransformervoltage(testvolts:2kV)
±0.5%
±0.2%
viadedicatedcalibratedfrontknob(scaleaccuracy:±5%)
AC:12,24,48,110,230,400,525V±15%
DC:12,24,48,±15%
10A250Vac
AC:±2.4VA
DC:100mA
0.5sec(500mSec)
2kVbetweensupply/outputandadjacentcontacts
1kVbetweenopencontacts.
30millionoperations
(operating)-20+60°C
(H)92mmx(D)64mm(W)35.5mm(2moduleswide)
488.00 502.00 565.00 565.00