IS 302-2-26: Safety of household and similar electrical appliances, Part 2: Particular requirements: Section 26 Clocks

12 Pages·1994·1.2 MB·English

by  Bureau of Indian Standards

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timely dissemination of this information in an accurate manner to the public.
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“The Right to Information, The Right to Live” “Step Out From the Old to the New”
IS 302-2-26 (1994): Safety of household and similar
electrical appliances, Part 2: Particular requirements:
Section 26 Clocks [ETD 32: Electrical Appliances]
“!ान $ एक न’ भारत का +नम-ण”
Satyanarayan Gangaram Pitroda
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IS 302-2-26 ( 1994 )

lndian Standard
SAFETY OF HOUSEHOLD AND SIMILAR
ELECTRICAL APPLIANCES
PART 2 PARTICULAR REQUIREMENTS
Section 26 Clocks
UDC 645’5 : 681’113’1

0 BIS 1994
BUREAU OF INDIAN STANDARDS
MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW DELHI 110002

February 1994 Price Group 3
ytefaS of dlohesuoH dna ralimiS lacirtcelE secnailppA lanoitceS ,eettimmoC DTE 32
DROWEROF
sihT naidnI dradnatS was adopted yb the uaeruB of naidnI ,sdradnatS after the draft dezilanif yb
the ytefaS of dlohesuoH dna ralimiS lacirtcelE secnailppA lanoitceS eettimmoC had neeb devorppa
yb the lacinhcetortcelE noisiviD .licnuoC
sihT dradnats srevoc the lareneg dna ytefas stnemeriuqer for .skcolc sihT dradnats does ton revoc
the ecnamrofrep .stnemeriuqer
sihT dradnats si ot eb read ni noitcnujnoc htiw SI l-203 ( 1979 ) ytefaS‘ of dlohesuoh dna ralimis
lacirtcele :secnailppa Part 1 lareneG stnemeriuqer ( $frh revision )‘. roF the sake of ,ecneinevnoc
the sesualc of siht dradnats dnopserroc ot those of SI 302 - 1 ( 1979 ) hcihw are elbacilppa ( hcihw
snaem that tnaveler snoisivorp of the esualc llahs ylppa ), or ton elbacilppa dna the sesualc-bus or
snoitrop thereof hcihw are ton elbacilppa are detacidni as :rednu
a) nI case of a esualc where ti si elbacilppa or ton ,elbacilppa the gnidrow desu ni siht esualc
of SI I-203 ( 1979 ) si ton/elbacilppa .elbacilppa
)b nI case of a esualc-bus or part thereof ‘Not .’elbacilppa
reverehW a esualc-bus of SI l-203 ( 1979 ) si ot eb decalper yb a wen test, ti has neeb detacidni as
:rednu
tnemecalpeR - dewolloF yb the wen text.
ynA noitidda ot the gnitsixe snoisivorp of a esualc-bus of SI l-203 ( 1979 ) has neeb detacidni as
.rednu
noitiddA - dewollof yb the text of the lanoitidda .rettam
selbat/sesualC hcihw are lanoitidda ot those of SI I-203 ( 1979 ) are derebmun gnitrats morf 101
dna lanoitidda sesualc-bus are derebmun htiw the niam sesualc rebmun dewollof yb 101, ;201 etc,
for ,elpmaxe 7.101.

dluohS revewoh yna noitaived tsixe neewteb SI -203 1 ( 1979 ) dna siht ,dradnats the snoisivorp of
the rettal llahs .ylppa
elihW gniraperp siht ,dradnats ecnatsissa has neeb devired morf the gniwollof :snoitacilbup
CEI buP l-533 ( 1976 ) ytefaS‘ of dlohesuoh dna ralimis lacirtcele secnailppa : Part 1 lareneG
.’stnemeriuqer
CEI buP 62-2-533 ( 1987 1 ytefaS‘ of dlohesuoh dna ralimis cirtcele secnailppa : Part 2
ralucitraP stnemeriuqer for .’skcolc
ehT naidnI 3dradnatS hcihw are yrassecen stcnujda of siht ,dradnats are nevig ni xennA .AA
roF the esoprup of gnidiced whether a ralucitrap tnemeriuqer of siht dradnats si deilpmoc ,htiw the
lanif ,eulav devresbo or ,detaluclac gnisserpxe the tluser of a test llahs eb dednuor off ni
ecnadrocca htiw SI 2 : 1960 seluR‘ for gnidnuor off laciremun seulav ( revised )‘. ehT rebmun of
tnacifingis secalp deniater ni the dednuor off eulav dluohs eb the emas as that of the deificeps eulav
ni siht .dradnats
AMENDMENT NO. 1 APRIL 2002
TO
IS 302-2-26(1994) SAFETY OF HOUSEHOLD AND
SIMILAR ELECTRICAL APPLIANCES
PART 2 PARTICULAR REQUIREMENTS
Section 26 Clocks
(Page 3, clause 101.1, line 3) — Substitute 'a sample' for 'two samples of
the same type and rating'.
(Page 4, clause 101.1.1, line 1) — Substitute 'Sample' for 'Both samples'.
(ETD 32)

Reprography Unit, BIS, New Delhi, India
IS 302-2-26( 1994)
Indian Standard
SAFETY OF HOUSEHOLD AND SIMILAR
ELECTRICAL APPLIANCES
PART 2 PARTICULAR REQUIREMENTS
Section 26 Clocks
1 SCOPE 3 LARENEG TNEMERIUQER
ehT esualc of 1s l-203 ( 1979 ) si elbacilppa sihT esualc of SI I-203 ( 1979 ) si .elbacilppa
except as .swollof
4 LARENEG SETON ON STSET
1.1 Replacement
sihT esualc of SI l-203 ( 1979 ) si .elbacilppa
sihT dradnats srevoc lareneg dna ytefas -eriuqer
stnem of detarepo-sniam skcolc hcihw are 5 GNITAR
yliramirp dednetni for gnitacidni-emit sesoprup
that rated egatlov ton gnideecxe 250 V ac elgnis sihT esualc of SI l-203 ( 1979 ) si elbacilppa
phase or dc. except as .swollof
mralA ,skcolc skcolc gnillortnoc oidar sreviecer 5.1 Replacement
dna the ,ekil that are regarded as gnieb yliramirp
dednetni for gnitacidni-emit sesoprup dna -gnirps ehT mumixam rated egatlov si 250 V.
nevird skcolc htiw na detarepo-yllacirtcele gnidniw
,msinahcem are nihtiw the scope of siht .dradnats ecnailpmoC si checked yb noitcepsni of the
skcolC gnitaroprocni gnivird snaem other naht .gnikram
srotom are osla nihtiw the scope.
6 CLASSIFICATION
sihT dradnats does ton ylppa :ot
sihT esualc of SI l-203 ( 1979 ) si .elbacilppa
skcolC- gnivah other ,snoitcnuf whether or
ton ni noitanibmoc htiw emit ,noitacidni
hcus as retsam lortnoc skcolc dna sremit for 7 GNIKRAM
gnikooc ,segnar gnihsaw senihcam dna the
;ekil sihT esualc of SI l-203 ( 1979 ) si elbacilppa
except as .swollof
skcolC- for ’ni-gnikcolc‘ ;sesoprup
skcolC- detaroprocni ni detarepo-sniam 7.14 tnemecalpeR

cinortcele dna detaler sutarappa for -esuoh
dloh dna ralimis lareneg ;esu dna daetsnI of the gnikram tnemeriuqer for dexif
,secnailppa the gniwollof .seilppa
skcolC- gnitaroprocni cinortcele stiucric
.ylno ehT gnikram of skcolc dednetni ot eb yltnenamrep
detcennoc ot dexif gniriw llahs ton eb dniheb a
elbahcated-non ,revoc sselnu the revoc has ot eb
2 YGOLONIMRET
devomer ot tcennoc the kcolc ot the .ylppus
sihT esualc of SI l-203 ( 1979 ) si elbacilppa
7.101 ehT skcolc yam osla eb dekram htiw the
except as .swollof
dradnatS Mark.
2.30 Replacement
8 PROTECTION AGAINST ELECTRIC
lamroN daol setoned the daol deniatbo nehw the
SHOCK
kcolc si detcennoc ot the sniam ylppus dna ydaets
snoitidnoc evah neeb dehsilbatse rednu the sihT esualc of SI I-203 ( 1979 ) si elbacilppa
gniwollof .snoitidnoc
except as .swollof
nevird-gnirpS skcolc htiw na detarepo-yllacirtcele
8.5 Replacement
gnidniw msinahcem are operated as ni lamron
;esu for other ,kcolc the rotor si .dekcol sdnaH dna rieht eldnips dna shafts of gnitarepo
,sbonk ,seldnah srevel dna the ekil llahs ton eb
NOTE - fI eht kcolc setaroprocni na -ortcele .evil
yllacinahcem detarepo mrala ,msinahcem siht si rehtie
ni tiucric ro tuo fo ,tiucric revehcihw sevig eht tsom
elbaruovafnu .noitidnoc ecnailpmoC si checked yb .noitcepsni

1
SI 62-2-203 ( 1994 )
19.6 noitiddA
8.6 noitiddA
skcolC gnitaroprocni sroticapac or srotsiser ot
sdnaH are ton deredisnoc as gnieb detautca ni ecuder the egatlov for the rotom are operated
lamron ,esu sselnu yeht evah ot eb dehcuot ot htiw the rotom dekcol dna htiw the yticapac or
retla the emit .gnittes srotsiser detiucric-trohs eno at a .emit
9 GNITRATS FO MOTOR-OPERATED ehT gnidniw msinahcem of nevird-gnirps skcolc
SECNAILPPA si deredisnoc ot evah gnivom parts elbail ot eb
.demmaj
sihT esualc of SI l-203 ( 1979 ) si .elbacilppa
19.11. sihT esualc si .elbacilppa
OI TUPNI DNA TNERRUC
Other skcolc are ton tested for lamronba
sihT esualc of SI l-203 ( 1979 ) si ton .elbacilppa .noitarepo
20 YTILIBATS DNA LACINAHCEM
11 ESIR-ERUTAREPMET
SDRAZAH
sihT esualc of SI I-203 ( 1979 ) si .elbacilppa
sihT esualc of SI l-203 ( 1979 ) si .elbacilppa
2I NOITAREPO REDNU DAOLREVO
21 LACINAHCEM HTGNERTS
SNOITIDNOC FO SECNAILPPA HTIW
GNITAEH STNEMELE sihT esualc of SI I-203 ( 1979 ) si elbacilppa
except as .swollof
sihT esualc of SI t-203 ( 1979 ) si ton .elbacilppa
21.1 NOITACIFIDOM
13 LACIRTCELE NOITALUSNI DNA
EGAKAEL TNERRUC TA GNITAREPO daetsnI of the gnirps remmah tnemtsujda deificeps
ERUTAREPMET the gniwollof :seilppa
sihT esualc of SI I-203 ( 1979 ) si .elbacilppa ehT remmah gnirps si detsujda so that the tcudorp
of the ,noisserpmoc ni ,sertemillim dna the force
4I OIDAR DNA NOISIVELET exerted, ni ,snotwen slauqe 500, the noisserpmoc
ECNEREFRETNI NOISSERPPUS gnieb yIetamixorppa 13 .mm htiW siht -tsujda
,tnem the tcapmi ygrene si 0’25 f 0’05 .mN
sihT esualc of SI I-203 ( 1979 ) si .elbacilppa
noitiddA
5I ERUTSIOM ECNATSISER
ehT swolb are ton deilppa ot seldnips of sdnah or
sihT esualc of SI l-203 ( 1979 ) si .elbacilppa ot laid ,sessalg sselnu the kcolc does ton ylpmoc
htiw the stnemeriuqer of 8.1 nehw the laid ssalg
6I NOITALUSNI ECNATSISER DNA si ,devomer ni hcihw case the swolb are osla
CIRTCELE HTGNERTS ( RETFA YTIDIMUH deilppa ot the laid .ssalg
TNEMTAERT )
22 NOITCURTSNOC
sihT esualc of SI l-203 ( 1979 ) si .elbacilppa
sihT esualc of SI I-203 ( 1979 ) si elbacilppa
17 DAOLREVO NOITCETORP except as .swollof
sihT esualc of SI l-203 ( 1979 ) si .elbacilppa 22.1 noitiddA
skcolC yam eb of ssalC ,I ssalC II or ssalC .III
8I ECNARUDNE ( rednu noitaredisnoc ).
22.19 noitiddA
19 LAMRONBA NOITAREPO
fI lioc sremrof of gnitator-non sgnidniw are desu
sihT esualc of SI l-203 ( 1979 ) si etbacilppa
as decrofnier ,noitalusni yeht llahs eb dedluom ni
except as .swollof
eno .eceip lioC sremrof of other sgnidniw llahs
ton eb desu as decrofnier .noitalusni
19. t tnemecalpeR
lanoitiddA esualc-buS
daetsnI of the sesualc-bus ,elbacilppa the
gniwollof :seilppa 22.101 ehT gnihctiws msinahcem of skcolc -noc
gnillort oidar sreviecer dna of skcolc for ralimis
roF nevird-gnirps skcolc htiw na -yllacirtcele sesoprup llahs ylpmoc htiw the tnaveler naidnI
operated gnidniw msinahcem dna for skcolc dradnatS as far as si .elbanosaer
. .
gmtaroprocm srotom gnivah sroticapac ni the
tiucric of na yrailixua ,gnidniw ecnailpmoc si ecnailpmoC si checked gnidrocca ot the tnaveler
checked yb the test of 19.6. .dradnats

2
SI 62-2-203 ( 1994 )
23 LANRETNI GNIRLW 30 ECNATSlSER OT ,TAEH ERIF DNA
GNIKCART
sihT esualc of SI I-203 ( 1979 ) si .elbacilppa
sihT esualc of 1s l-203 ( 1979 ) si .elbacilppa
24 STNENOPMOC
31 ECNATSISER OT GNITSUR
sihT esualc of SI l-203 ( 1979 ) si elbacilppa
except as .swollof
sihT esualc of SI l-203 ( 1979 ) si .elbacilppa
24.1 noitiddA
32 NOITAIDAR SDRAZAH
sehctiwS detaroprocni ni skcolc are ton deriuqer
sihT esualc of SI l-203 ( 1979 ) si .elbacilppa
ot eb sehctiws for tneuqerf .noitarepo
101 STSET
24.9 Not .elbacilppa
25 YLPPUS NOITCENNOC DNA LANRETXE 101.1 Type Tests
ELBIXELF SELBAC DNA SDROC
ehT tests deificeps ni elbaT 101 llahs -itsnoc
etut the epyt tests dna llahs eb deirrac tuo no
sihT esualc of SI l-203 ( 1979 ) si elbacilppa
two selpmas of the emas epyt dna gnitar detceles
except as .swollof
ylbareferp at modnar morf a raluger noitcudorp
.tol Before tnemecnemmoc of the tests, the
25.2 tnemecalpeR
selpmas llahs eb yllausiv denimaxe dna detcepsni
ehT tnemeriuqer that secnailppa dednetni ot eb for suoivbo lausiv defects ni respect of -opmoc
yltnenamrep detceimoc ot dexif gniriw llahs wolla ,stnen parts dna rieht ,ylbmessa ,noitcurtsnoc
the noitcennoc of the ylppus seriw after the lacinahcem hazards, ,sgnikram noisivorp of
ecnailppa has neeb dexif ot sti ,troppus seilppa elbatius slanimret ylppus ,snoitcennoc gnihtrae
for
ylno ot ,foorp-pird foorp-hsalps dna thgitretaw dna the ssenevitceffe of screws dna .snoitcennoc
,skcolc dednetni ot eb yltnenamrep detcennoc ot ehT lanretxe ecafrus hsinif llahs eb neve dna
dexif .gniriw free morf gnihsinif defects.
25.4 noitacifidoM Table 101 Schedule of Type Tests
epyT- 2 tnemhcatta .dewolla (Chuse 101.1 )
25.6 Replacement IS .oN ecnerefeR esualC
daetsnI of the sepyt of cord deificeps the gniwollof )i noitcetorP tsniaga cirtcele kcohs 8
.seilppa
)ii gnitratS fo rotom detarepo secnailppa 9
Power ylppus cords llahs eb ton rethgil :naht )iii tupnI 10
)vi esir-erutarepmeT 11
fI- lynivylop edirolhc ,detalusni talf niwt
)v noitarepO rednu daolrevo snoitidnoc 12
elblxeli cord as per SI 694 : ;0991 dna
)iv lacirtcelE noitalusni dna egakael 13
fI-- rebbur ,detalusni dediarb elbixelf cord as tnerruc at gnitarepo erutarepmet
per SI 9968 ( Part 1 ) : 1988. )iiv oidaR dna noisivelet ecnerefretni 14
noisserppus
25.11 noitiddA )iiiv erutsioM ecnatsiser 15
)xi noitalusnI ecnatsiser dna cirtcele 16
stonK si the cord are dewolla for lynivylop htgnerts ( retfa ytidimuh tnemtaert )
edirolhc detalusni cord, ni hcihw case ti llahs eb )x daolrevO noitcetorp 17
a elpmis daehrevo tonk dnuora a htooms duts or )ix ecnarudnE ( rednu noitaredisnoc ) 18
.nip
)iix lamronbA noitarepo 19
)iiix ytilibatS dna lacinahcem sdrazah 20
26 SLANlMRET ROF LANRETXE
SROTCUDNOC )vix lacinahceM htgnerts 21
)vx noitcurtsnoC 22
sihT esualc of SI I-203 ( 1979 ) si .elbacilppa )ivx lanretnI gniriw 23
)iivx stnenopmoC 24
27 NOISIVORP ROF GNIHTRAE
)iiivx ylppuS noitcennoc dna lanretxe elbixelf 25
selbac dna sdroc
sihT esualc of SI l-203 ( 1979 ) si .elbacilppa
)xix s!animreT rof lanretxe srotcudnoc 26
28 SWERCS DNA SNOITCENNOC )xx noisivorP rof gnihtrae 27
)ixx swercS dna snoitcennoc 28
sihT esualc of SI l-203 ( 1979 ) si .elbacilppa
xxii) egapeerC ecnatsid dna secnaraelc 29
29 EGAPEERC SECNATSID DNA xxiii) ecnatsiseR ot ,taeh erif dna gnikcart 30
SECNARAELC xxiv) ecnatsiseR ot gnitsur 31
)vxx noitaidaR sdrazah 32
sihT esualc of SI l-203 ( 1979 ) si .elbacilppa

3
IS 302-2-26 ( 1994 )
f) noitalusnI ecnatsiser dna cirtcele 16
101.1.1 Criteriafor Acceptance
htgnerts ( after ytidimuh tnemtaert )
htoB selpmas llahs yllufsseccus pass lla the epyt
tests for gnivorp ytimrofnoc htiw the stnemeriuqer g) noisivorP for gnihtrae 27
of the .dradnats fI yna of the selpmas sliaf ni
NOTE roF- eht esoprup fo ecnatpecca ,stset eht
yna of the epyt tests, the gnitset ,ytirohtua at sti
ytidimuh tnemtaert llahs eb enod rof 24 sruoh elihw
,noitercsid yam call for fresh selpmas ton -deecxe gnitcudnoc eht tset rof erutsiom ecnatsiser ees( 15).
gni eciwt the lanigiro rebmun dna tcejbus meht
niaga ot lla tests or ot the test(s) ni hcihw 101.2.1 A dednemmocer gnilpmas erudecorp for
)s(eruliaf had .derrucco No eruliaf dluohs eb ecnatpecca tests si nevig ni xidneppA B of
dettimrep ni the repeat test(s). 1s l-203 ( 1979).
101.2 Acceptance Tests
101.3 Routine Test
ehT gniwollof llahs etutitsnoc the ecnatpecca :stset
ehT gniwollof llahs etutitsnoc the enituor :stset
Test Clause
Reference Test Clause
Reference
a) noitcetorP tsniaga cirtcele shock 8
)b tupnI OI a) noitcetorP tsniaga cirtcele 8
shock
c) esir-erutarepmeT 11
d) lacirtcelE noitalusni dna egakael 13 )b hgiH egatlov 13.3.2 of
tnerruc at gnitarepo erutarepmet SI I-203 ( 1979)
e) erutsioM ecnatsiser 15 c) noisivorP for gnihtrae 27
ANNEX A
xidneppA A of SI l-203 ( 1979 ) si ton .elbacilppa
ANNEX I3
SAMPLING POCEDURE FOR ACCEPTANCE TESTS
xidneppA B of SI l-203 ( 1979) si .elbacilppa

ANNEX C
ELECTRONIC CIRCUITS
xidneppA C of SI I-203 ( 1979 ) si elbacilppa fi cinortcele stiucric are .desu
ANNEX D
TNEMERUSAEM OF TEMPERATURE WITH THERMOMETER
xidneppA D of SI l-203 ( 1979 ) si .elbacilppa
ANNEX E
ALTERNATIVE TESTS FOR PROTECTED MOTOR UNITS
xidneppA E of SI l-203 ( 1979 ) si ton .elbacilppa
4