Technical information

J-29
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Monitoringdevices
Function Phase failure / reversal relay
Voltage window comparator + phase failure
(single phase) (three phase) (three phase + neutral)
Model DPF DPF/K DVW1 DVW3 DVW3N
Description of operation
Therelaywilloperatewhileallthree
phasesare:
•present
•inthecorrectsequence
•balanced
Ifanyoftheaboveconditionschange
therelaywillreleaseuntilconditions
arerestoredtonormalagain.
Single phase
Therelayoperatesaslongasmeasuredvoltageremainswithinthepre-set“upper”and“lower”limits.Ifmonitored
voltageexceedsorfallsbelowthepre-setlimits,therelaywillrelease.
Three phase
Therelayoperatesaslongasmeasuredvoltageremainswithinthepre-set“upper”and“lower”limitsandallphases
arepresentandinasequence.Ifmonitoredvoltageexceedsorfallsbelowthepre-setlimitoraphaseislostoroutof
sequence,therelaywillrelease.WithphasereversalbothLEDson.
Three phase + neutral
SameasDVW3butalsomonitorstheneutralphase
Delays: canbeactivatedviafrontselector
1)
No Delay
Measurementstartsimmediatelyandrelayrespondsdirectly(normalacquisitiondelaysapply)
2)
Startup delay 10 sec
Onapplicationofsupplyrelayoperatesimmediatelypower(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180secwhereafterrelayoperates(powerLED
steadies).Ifrelaytripsthe180secdelayisactivated(powerLEDflashes)beforerelayoperatesagain.
4)
Reaction delay 10 sec
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presentlongerthanfor10
sec.
Galvanic insulation 110,230,400Vareequippedwithinternaltransformervoltage(testvolts:2kV)
Range accuracy ±0.5%
Repeat accuracy ±0.2%
Time adjustment viadedicatedcalibratedfrontknob(scaleaccuracy:±5%)
Standard voltages AC:110,230,400,525V±15%
Contact rating 10A250Vac
Consumption
AC:±2.4VA
DC:100mA
Reset time 0.5sec(500mSec)
Insulation
2kVbetweensupply/outputandadjacentcontacts
1kVbetweenopencontacts.
Mechanical life 30millionoperations
Ambient limits (operating)-20+60°C
Dimensions
(H)92mmx(D)64mm(W)35.5mm(2moduleswide)
Connection diagram
Price 389.00 429.00 490.00 495.00 490.00