KYORITSU 5406A - Page 14

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●  RCD type S = Selective type (with trip out time-delay), this RCD is
specially designed for electrical installation where the selectivity
characteristicisnecessary.
In order to assure successful protection on an electrical installation using
RCD's,theyshouldbecheckedtesting:
● Tripouttimet⊿
● AndinsomecasesalsotheTrippingcurrentI⊿.
Tripouttimet⊿istimeneededbytheRCDtotripatratedresidualoperative
currentI⊿N.TypicallyRCDratedresidualoperativecurrentsI⊿nare:
10mA,20mA,30mA,200mA,300mA,500mA
ThestandardvaluesoftrippingtimedefinedbyIEC61009(EN61009)and
IEC61008(EN61008)arelistedinthetablebelow(forI⊿nand5I⊿n):
This tripping time values are concerning the RCD's correctly mounted
followingthemanufacturer'sspecifications.
TheRCDtesterModel5406AcontinuesdrivingtestcurrentuntilRCDtrips
oruptomaxtesttime.
ThistestisnamedTriptest(×1I⊿n)orFasttriptest(×5I⊿n).
NOTE:
There are special protection devices called "Adjusted RCD" where the
tripping time and tripping current are adjustable, in these cases the above
tableshouldnotbeconsidered.
TypeofRCD
General(G)
Selective(S)
I⊿n
300ms
max.allowedvalue
500ms
max.allowedvalue
130ms
min.allowedvalue
5
I
⊿n
40ms
max.allowedvalue
150ms
max.allowedvalue
50ms
min
.allowedvalue