Circutor computer SMART III-Fast Series Manuale Utente Scaricare il pdf (Pagina 41)

Active alarms Parameters

Active alarm code E01 to E017

(Table 9)

Iftherearemore than 4 alarms,the

informationisscrolledonthescreen�

Table 9: Alarm codes�

Code Description

E01

No current�Theloadcurrentislowerthantheminimumvalueorsomeofthe

currenttransformers(CT)arenotconnected�

Itisactivatedwhenthesecondarycurrentofthetransformerislowerthan50

mAinsomeofthephases�

Theunitdisconnectsthecapacitorsautomatically�

E02

Overcompensation�Theunitmeasurescapacitivepowerbutallthestages

aredisconnected�

ThiscanbeduetoanincorrectadjustmentoftheC/Kparameter�

Inordertoavoidpossiblefalseactions,thisalarmhasapredeneddelayof90

seconds�

E03

Undercompensation�Theunitmeasuresinductivepowerbutallthestages

aredisconnected�

ThiscanbeduetoanincorrectadjustmentoftheC/Kparameter�

Inordertoavoidpossiblefalseactions,thisalarmhasapredeneddelayof90

seconds�

E04

Overcurrent�Themeasuredcurrentexceedsthenominalcurrentby+20%

insomeofthephases�ThenominalcurrentisconsideredtobethatoftheCT

primary�

Inordertoavoidpossiblefalseactions,thisalarmhasapredeneddelayof5

seconds�

E05

Overvoltage�Thevoltagemeasuredinsomeofthephasesexceedsthecon-

guredvoltage(Vp-n)�

Theunitdisconnectsthecapacitorsautomatically�

Inordertoavoidpossiblefalseactions,thisalarmhasapredeneddelayof5

seconds�

E06

Low voltage�Thevoltageinsomeofthephasesislowerthanthecongured

voltage(Vp-n)�

Theunitdisconnectsthecapacitorsautomatically�

Inordertoavoidpossiblefalseactions,thisalarmhasapredeneddelayof5

seconds�

E07

Cos φ alarm�Thethree-phasecos φ islowerthanthelimitconguredinthe

Cosφalarm�Also,themeasuredcurrentsshouldbehigherthanthecongured

threshold�

Inordertoavoidpossiblefalseactions,thisalarmhasapredeneddelayof15

seconds�

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Circutor computer SMART III-Fast Series Manuale Utente Pagina 41

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