Technical information

J-31
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Function Load shed relay with real-time clock Load shed relay Three circuit load shed relay
Model DRLS DLS DLS3
Description of operation
Therelaywillremainofffor15minonapplying
powertotheunit.Afterwhichtherelay
energises.Theinputismonitoredandwill
releasetherelayifthecurrentexceeds5A..
Therelaywillonlyoperateagainifthecurrent
remainsbelowthelimitfor15min.
Thegeyserwillswitchoffinthepre-
programmedpeaktime.Thiscanbeoverridden
bypressingandreleasingthefrontpanel
button.ThestatusLEDwillflashandthegeyser
willremainonfor1hour.
Thegeysercanbeswitchedoffbypressingthe
frontpanelbuttonformorethen10s.Thepower
lightwillstartflashingandtherelaywillrelease.
Theunitcanbeswitchedtonormaloperation
bypressingthefrontpanelbuttonagainfor10s.
Current settings
5A(viafrontmountedselector)
Currentover16Ampsonthesensingcircuit
requires a CT.
Designedtomonitorcurrentconsumptionand
disconnectnon-criticalloadsfromthesystem.
Ideaforload-sheddingindomesticapplications
wheregeyserscanbedisconnectedwhen
switchingonthestoveselectablecurrentsetting
5A(or)10A.
Onapplyingsupply,relayisoperatedaslong
asdetectedcurrentisbelowpre-setlimit5A
(or)10A.Ifcurrentexceedsthelimittherelay
willreleasedisconnectingthecircuitandonly
operate pre-set once sensed current drops
belowthesetlimitfor15minutes.
Onstart-upunitdelaysrelayfor15min.
Current settings
5A(or)10A(viafrontmountedselector)
Currentover16Ampsonthesensingcircuit
requires a CT.
Step Function
Theloadshedrelaycontinuouslycompares
theinputcurrenttothesetvalue.Ifthe
inputcurrentexceedsthesetvaluerelay1
energisestodisconnectthefirstcircuit.If
theoverloadisstillpresentthenextrelay
willbeenergised.Theunitwillattemptto
reconnectremovedcircuitsafter5min.If
nooverloadispresentallcircuitswillbe
re-connected.Thisenablescircuitstobe
removed in a priority manner.
Cyclic Function
Ifacircuitisre-connectedafterthe5min
cycletime,andanoverloadremainstheunit
willremovethenextcircuitinacyclicfashion.
Whenanewoverloadconditionisdetected
thenextcircuitinthecycleisremoved.This
enablescircuitstobefunctionalwithout
priority.
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
16A250Vac 1x16A2x6A
Consumption
AC:±2.4VA
DC:100mA
Reset time 0.5sec(500mSec)
Insulation
4kVbetweensupply/outputandadjacentcontacts
1kVbetweenopencontacts.
Mechanical life 30millionoperations
Ambient limits (operating)-20+60°C
Connection diagram
Price
848.00 542.00 706.00
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Supply
Monitoringdevices