User Manual

DIR 1000587R0002 (L3821)
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2.3 Commissioning
2.3.1 Connections
For the connections provided by user, the recommendations contained in this document must be strictly complied with.
This will enable us to meet all international reference standards and ensure perfect relay operation even under severe environ-
mental and electromagnetic conditions. Take particular care with earthing connections.
2.3.2 CS and TC connection check
IfLSIGhasbeeninstalledbyuser,properconnectionofTCandCScablesshouldbechecked(withCBopenandVauxorbatteryunit)
beforecommissioningthecircuitbreaker;ifnotso,maketherightconnections.IfanyoftheredLEDsislit,thismeansanerrorinCS
and/orTCconnections.Seepar.2.6.1.
2.3.3 Current sensor connection for external neutral conductor
Whenthecurrentsensorfortheexternalneutralconductorhastobeconnectedtoathree-polecircuitbreaker,remembertosetI
n
N
accordingly(seepar.2.4,ref.3).
Duringthisprocedure,thecircuitbreakermustbeopenandpreferablyisolated.
2.4 Userinterface
WordingonLSIGunitfrontside:
Ref. Description
 1 SerialnumberofLSIGprotectionrelease
 2 PositionindicatorformainsfrequencyDIPswitch
 3 PositionindicatorofDIPswitchforsettingneutralconductor’sprotection
 4 Testconnectortoconnectortestreleaseusingbatteryunit
 5 PositionindicatorofDIPswitchesforsettingthresholdI1
6 DIPswitchesformainsettingofcurrentthresholdl1
 7 DIPswitchesforne-settingofcurrentthresholdl1
 8 AlarmindicatorLEDforprotectionfunctionL
9 Pre-AlarmindicatorLEDforprotectionfunctionL
 10 PositionindicatorofDIPswitchesforsettingthresholdI2
11 DIPswitchesforsettingcurrentthresholdI2
12 AlarmindicatorLEDforprotectionfunctionS
 13 PositionindicatorofDIPswitchesforsettingthresholdI3
 14 DIPswitchesforsettingcurrentthresholdI3
 15 AlarmindicatorLEDforprotectionfunctionI
 16 PositionindicatorofDIPswitchesforsettingthresholdI4
 17 DIPswitchesforsettingcurrentthresholdI4
 18 AlarmindicatorLEDforprotectionfunctionG
 19 DIPswitchforsettingtriptimet4andtypeofcurve
 20 PositionindicatorofDIPswitchesforsettingtimet4
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