Delphia 33 - Page 61

D-29.2
Anode(protector)
Pic.2.
.
Theflowofvoltaic currentincase ofusingthe
protectorand disconnectingtheprotectioncable
fromDCinstallation
58/99
8
115/230VAC
(
Thedifferentialcircuitbreakerworksontheprincpleofsummingupthe
currentamperageineveryworkingwire.Ifthecurrentsaresummedupandgivezero
result,thismeansthatnocurrentgoesfromthecircuittothe “Earth”.Ifthesumof
currentsisdifferentfromzeroandthevalueofdifferentialcurrentcausesathreatof
electricshock,thenthedifferentialcircuitbreakerbreakssuchacircuit,includingN
cable.Thedifferentialcircuitbreakerreactstoharmfulcurrentgoingto ‘Earth’,PE
cable,throughinsulationorhumanbody.Thisbreakerisequippedwithtestbutton
“T” andyoushouldrememberforyourownsafetytotestthebreakeronceamonth.
Theinquiresincludedinthissub-chapteronlyindirectlyregardsthesafe
exploitationof installationonyachts.Themainpurposeistoshowthe
influenceofelectricityonthephenomenomandprocessofcorrosion.
Eachmetalelementsoftheyachtswhichareunderwaterareespeciallyunder
thethreatofcorrosionprocess.Cathodeprotectionisusedtoprotectunderwatermetal
equipment.Thisiscommonlyperceivedasthemosteffectivemethodofmetal
constructionprotectioninnaturalelectrolyticenvironments.
Thecathodeprotectionisbasedontheconnectionofprotectedconstructions in
caseofouryachtsitismainlypropeller)withalessqualitymetalcreatingtheanode
pic p ofthecircuitwherethecathodeistheprotectedcircuit.Withtime,
dependingontheenviro-nment(highsalinityandtemperaturehelpsthecorrosion
process)andotherfactors,theanodeisgettingsmaller,itjustmeltsdown.
( .2 .109)