IS 5834-1: Electrical Timer Relays for Industrial Purposes, Part 1: Pneumatic

17 Pages·1994·1.7 MB·English

by  Bureau of Indian Standards

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IS 5834-1 (1994): Electrical Timer Relays for Industrial
Purposes, Part 1: Pneumatic [ETD 35: Power Systems Relays]
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IS 5834 ( Part 1) : 1994
WmiYs mFi;

Indian Standard
ELECTRICALTIMERRELAYSFORINDUSTRIAL
PURPOSES-SPECIFICATION
PART 1 PNEUMATIC
First Revision /
f
UDC 621.3 18-562.7

0 BIS 1994
BUREAU OF INDIAN STANDARDS
MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW DELHI 110002
April 1994 Price Group 6
Power metsyS syaleR lanoitceS ,eettimmoC TE 35
.
DROWEROF
sihT naidnI dradnatS ( tsriF noisiveR ) was adopted yb the uaeruB of naidnI ,sdradnatS after the draft
finalized yb the Power metsyS syaleR lanoitceS eettimmoC had neeb devorppa yb the lacinhcetortcelE
noisiviD .licnuoC
sihT naidnI dradnaiS ( Part 1 ) was tsrif dehsilbup ni 1973. sihT noisiver has neeb nekatrednu ot gnirb
i
ti ni enil htiw SI 13947 ( Part teS/S 1 ) : 1993 WOL‘ egatlov raeghctiws dna :raeglortnoc Part 5 lortnoC
tiucric secived dna gnihctiws ,stnemele noitceS 1 lacinhcetortcelE lortnoc tiucric ’secived read htiw
SI 13947 ( Part 1 ) : 1993 egatlov-woL< raeghctiws dna :raeglortnoc traF 1 lareneG ’selur ecnis the syaler
for lairtsudni sesoprup derevoc ni siht dradnats lliw mrofrep gnihctiws of evitcudni sdaol ekil rotcatnoc
dna yaler lioc ralimis ot tolip secived derevoc ni SI 13947 ( Part teS/S I ) : 1993.
lacirtcelE syaler for lairtsudni sesoprup are won gnieb ylevisnetxe desu ni suoirav seirtsudni for lortnoc
dna other .sesoprup A rebmun of lairtsudni syaler for hcus sesoprup si won gnieb derutcafunam -negidni
ylsuo ni .aidnI
ehT rebmit syaler for lairtsudni sesoprup derevoc yb other parts of siht ,dradnats SI 5834 lacirtcelE‘
rebmit syaler for lairtsudni ,’sesoprup :era
Part 2 dezirotoM remit syaler
Part 3 cinortcelE remit syaler
roF the esopru,p 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
IS 5834 ( Part 1 ) : 1994
Indian Standard
ELECTRICALTIMERRELAYSFORINDUSTRTAL
PURPOSES- SPECIFICATION
PART 1 PNEUMATIC
First Revision )
(
1 SCOPE yaled yaler ) and dezigrene ( rof eht ’ff~L yaled
yaler .)
sihT naidnI dradnatS ( traP 1 ) srevoc citamuenp
remit syaler rof gnidivorp ylsselpets elbatsujda NOTES sesualC- 2.4.1.1 dna 2.4.1.2 fo SI 13947
emit yaled ot lortnoc suoirav sepyt fo lairtsudni ( traP ceS!S 1 ) : 1993 yam osla eb deilppa ot yna
stiucric fo lanimon egatlov ton gnideecxe 1 000 epyt fo tcatnoc .tnemele
.stlov
3.5 Number of Poles
2 REFERENCES A yaler is dellac elgnis ,elop elbuod ,elop ,cte
The gniwollof naidnI Standards era yrassecen ro is detangised eno ,elop owt ,elop ,cte fi eht
stcnujda ot this standard: demit tiucric fo yaler is dedivid otni eno ,elop
owt ,elop ,cte detalusni morf hcae ,rehto and
IS No. Title that eht selop era ro nac eb delpuoc ni hcus a
13947 egatlov-woL raeghctiws and a rennam as ot nepo ro esolc .rehtegot
( traP 1 ) : 1993 :raeglortnoc traP 1 lareneG
selur 3.6 Rated Insulation Voltage
13947 egatlov-woL raeghctiws and ehT eulav V; fo egatlov assigned yb eht -unam
( traP c3e$ 1 ) : :raeglortnoc traP 5 lortnoC rerutcaf yb hcihw eht remit is detangised and
tiucric secived and gnihctiws ot hcihw cirtceleid ,stset secnaraelc and egapeerc
,stnemele noitceS 1 -ortcelE secnatsid era .derrefer
lacinahcem lortnoc tiucric
secived 3.7 Rated Operational Voltage
3 DEFINITIONS ehT eulav U, fo egatlov assigned yb eht -unam
rerutcaf ,hcihw ni noitanibmoc htiw a detar
3.0 roF eht esoprup fo this standard, eht -wollof
lanoitarepo ,tnerruc senimreted eht noitacilppa
gni snoitinifed ni noitidda ot esoht nevig ni
fo eht remit yaler and ot hcihw eht tnaveler
SI 13947 ( traP teS/5 1 ) shall .ylppa
stset and eht noitazilitu seirogetac era .derrefer
3.1 emiT yaleD yaleR roF esahpylop ,stiucric U, is detats as rms -tlov
ega neewteb phases.

A yaler esohw noitarepo ro gnitteser is -netni
yllanoit .deyaled-emit ehT emit yaled fo eht NOTE - A remit yaler yam eb dengissa a rebmun
fo snoitanibmoc fo detar lanoitarepo egatlov dna
yaler yam eb dexif ro .elbatsujda
detar lanoitarepo .tnerruc
3.2 emiT yaleD tcatnoC
3.8 Rated Control Circuit Voltage
A tcatnoc dednetni ot eb desu rof gnillortnoc
an lanretxe tiucric and detarepo yb eht emit A eulav U, fo egatlov no hcihw eht gnitarepo
yaled .yaler and esir-erutarepmet scitsiretcarahc fo eht
lortnoc tiucric era .desab
3.3 suoenatnatsnI tcatnoC
NOTES
A tcatnoc gnikrow ni noitcnujnoc htiw and
detautca tuohtiw yna lanoitnetni emit yaled yb 1 ehT tcerroc gnitarepo snoitidnoc era desab nopu
yaler and gnivres ot lortnoc noitarepo fo -ilixua a eulav fo eht lortnoc ylppus egatlov ton ssel naht
85 tnecrep fo sti detar ,eulav htiw eht tsehgih fo
yra .)s(ecived
lortnoc tiucric tnerruc ;gniwolf ton erom naht 110
tnecrep fo sti detar .eulav
3.4 evitareponI noitidnoC
2 ehT rerutcafunam dluohs eb deraperp ot etats eht
tI is eht noitidnoc fo eht yaler and stcatnoc eulav ro seulav fo eht tnerruc nekat yb eht lortrx,c
nehw eht yaler lioc is dezigrene-ed ( rof eht ’no‘ tiucric at eht detar lortnoc ylppus .egatlov
IS 5834 ( Part 1 ) : 1994
lautca gnitarepo emit ni sdnoces rof
3.9 Rated Thermal Current T=
,hcae and
A eulav fo tnerruc assigned yb eht rerutcafunam
and detimil yb eht esir-erutarepmet as deificeps n 1 rebmun fo .snoitarepo
ni 5.10.
3.18 Type Tests
NOTE - It is eht mumixam eulav fo tnerruc hcihw
a tcatnoc dellatsni rednu dradnats snoitidnoc fo stseT deirrac tuo ot evorp ytimrofnoc htiw eht
,ecivres nac yrrac ylsuounitnoc tuohtiw .egamad stnemeriuqer fo this .noitacificeps yehT era
dednetni ot evorp lareneg ytilauq and ngised fo
3.10 Rated Operational Current
a nevig epyt fo .yaler
Clause 4.3.2.3 fo SI 13947 ( traP 1 ) : 1993
.seilppa 3.19 enituoR stseT
stseT deirrac tuo no hcae yaler ot kcehc -eriuqer
NOTE - A tcatnoc tnemele yam eb dengissa a
rebmun fo snoitanibmoc fo detar lanoitarepo egatlov stnem ylekil ot yrav gnirud .noitcudorp
dna detar lanoitarepo .tnerruc
4 DESIGN AND CONSTRUCTION
3.11 Rated Frequency
4.1 General
Clause 4.3.3 fo SI 13947 ( traP 1 ) : 1993 .seilppa
4.1.1 slairetaM dluohs eb elbatius rof eht -itrap
3.12 detaR Making yticapaC raluc .noitacilppa
Clause 4.3.5.2 fo SI 13947 ( traP 1 ) : 1993 -ppa 4.1.2 Parts hcihw yam eriuqer tnemecalper shall
eb ylidaer elbissecca and .e.baeca1per
lies.
3.13 Rated Breaking Capacity 4.2 erusolcnE
Clause 4.3.5.3 fo SI 13947 ( traP 1 ) : 1993 -ppa 4.2.1 ehT yaler yam eb desuoh ni a etarapes
.seil
erusolcne ro yam eb dedivorp ni nepo .noitucexe
3.14 On yaleD ehT epyt fo ,erusolcne fi ,dedivorp shall eb eno
fo esoht derevoc yb xidneppA C fo SI 13947
nO‘ yaleD seifingis that eht gnimit doirep fo a
( traP 1 ) : 1993.
emit yaled yaler is detaitini nopu noitazigrene
fo its .lioc 4.2.2 ehT ,erusolcne fi ,dedivorp shall eb os
degnarra that nehw ti is ,denepo eht slanimret
3.15 ffO yaleD
era ylidaer .elbissecca ,eromrehtruF tneiciffus
ffO‘ ’yaleD seifingis that eht gnimit doirep fo a ecaps shall eb tfel ni eht roiretni fo eht -olcne
emit yaled yaler is detaitini nopu -azigrene-ed erus rof eht noitadommocca fo eht lanretxe
noit fo its .lioc srotcudnoc morf rieht tniop fo yrtne otni eht
serusolcne up ot eht .slanimret
3.16 emiT yaleD
emiT yaled is eht emit lavretni neewteb eht 4.2.3 ehT revoc fo eht evitcetorp ,serusolcne fi
noitazigrene ( rof eht ’nO‘ yaled yaler ) ro dedivorp shall eb deruces ot its esab that ti
noitazigrene-ed ( rof eht ’ffO‘ yaled yaler ) fo tonnac eb yllatnedicca denesool ro dehcated
eht yaler lioc and eht noitautca fo eht emit yaled gniwo ot stceffe fo noitarepo fo eht .yaler oslA

.stcatnoc ti dluohs eb os deruces that ti is ton elbissop ot

nepo ti tuohtiw eht esu fo ,sloot unless elbatius
3.17 taepeR ycaruccA
snaem era dedivorp ot tneverp latnedicca -noc
ehT taeper ycarucca fo a emit yaled yaler is eno tcat htiw evil parts.
flah fo eht noitairav neewteb eht mumixam and
muminim devresbo gnitarepc semit at yna -itrap 4.3 gnihtraE
raluc ,gnittes dedivid yb eht naem fo all eht
4.3.1 ehT serusolcne fo ,yaler fi fo ,latem shall
devresbo gnitarepo semit and eht tneitouq
eb dedivorp htiw eno gnihtrae ,lanimret rof
deilpitlum yb 100 and desserpxe ni smret fo
detar segatlov ton gnideecxe 250 V, and owt
sulp ro minus .egatnecrep
etarapes gnihtrae slanimret rof detar segatlov
tI is nevig yb eht gniwollof :alumrof erom than 250 V. esehT slanimret shall eb
dedivorp revo and evoba all rehto snaem -ivorp
ycaruccataepeR = i r[ I):- x ded rof gniruces cillatem serusolcne ( ruomra
ro rehto cillatem gnirevoc ) fo gniyrrac-tnerruc
.selbac
100 tnecrep
4.3.2 ehT gnihtrae slanimret shall eb ylidaer
erehw
elbissecca and os decalp that eht htrae -cennoc
,T - mumixam gnitarepo emit ni ,sdnoces noit fo eht yaler deniatniam nehw eht revoc ro
,T =c muminim gnitarepo emit ni ,sdnoces yna rehto elbavom trap is .devomer
2
SI 5834 ( Part 1 ) : 499I
4.3.3 ehT gnihtrae slanimret shall eb fo etauqeda 5.2 Rated Contact Circuit Voltage
,ezis eb detcetorp against noisorroc and shall eb
ehT detar tcatnoc tiucric egatlov shall eb eno
yllacillatem .naelc rednU on secnatsmucric shall
fo eht gniwollof :seulav
a elbavom latem trap fo eht erusolcne eb insula-
det morf eht trap gniyrrac eht gnihtrae lanimret roF ca - 110, 240 and 415 stlov
nehw eht elbavom trap is ni .ecalp roF cd - 24, 48, 110 and 220 .stlov
4.3.4 ehT gnihtrae lanimret shall eb deifitnedi 5.3 Rated Currents
yb snaem fo eht lobmys 1 dekram ni a elbigel
and elbiledni rennam ;0 ro tnecajda ot eht 5.3.1 ehT detar lanoitarepo stnerruc shall eb 1,
2.5, 4, 6 and 10 A.
.lanimret
5.3.2 ehT detar lamreht stnerruc shall eb 1, ,5-b
4.4 Clearances and Creepage Distances
4, 6 and 10 A.
See xennA G fo SI 13947 ( traP 1 ) : 1993.
5.4 Rated Frequency
4.5 Terminals
ehT detar ycneuqerf shall eb eht standard -erf
4.5.1 ehT slanimret shall eb fo etauqeda .ezis ycneuq fo 50 .zH
4.5.2 lanimreT snoitcennoc shall eb hcus that
srotcudnoc yam eb detcennoc yb snaem fo 5.5 Rated Mechanical Duty Class
swercs ro rehto tnelaviuqe snaem os as ot erusne 5.5.1 nI tcepser fo its ecnatsiser ot lacinahcem
that eht yrassecen tcatnoc erusserp is -niatniam raew a emit yaler shall eb deziretcarahc yb eht
de .yltnenamr:p rebmun fo daol-on gnitarepo selcyc hcihw nac
eb edam tuohtiw yna lacinahcem .eruliaf ehT
4.6 Contacts detats rebmun fo daol-on gnitarepo selcyc
suoenatlumiS esu fo yllamron nepo tcatnoc and assumes on ,ecnanetniam riaper ro .tnemecalper
yllamron desolc tcatnoc no eht emas elop shall
5.5.2 ehT syaler era deifissalc gnidrocca ot
eb elbissimrep ylno no eht emas .ytiralop -noC
elbaT 1 ni tcepser ot rieht lacinahcem ytud
stcat shall eb yletelpmoc desolcne ot tneverp
.sessalc
ssergni fo dust and rehto hcus .stnemele -noC
stcat shall eb fo snap noitca .epyt
Table 1 Rated Mechanical Duty Class
4.7 Means of Time Delay Setting ( Clauses 5.6.2.1 and 9.8.1 )
yaleR shall eb dedivorp htiw a elpmis msinahcem
Class of No-Load Number of
rof ylsselpets adjusting eht emit yaled fo eht
Mechanical Operating On-Load Ope-
.yaler hcuS msinahcem shall ton eriuqer eht esu Endurance Cycles rating Cycles
fo yna laiceps sloot rof .gnittes ynA -tsujdaemit per Hour
tnem msinahcem gniriuqer yrator noitom shall
(1) (2) (3)
eb os dengised that eht emit lavretni sesaercni
0’3 0‘3 x 106 30
htiw esiwkcolc noitom and sesaerced htiw -itna 601x
1 1 120
esiwkcolc .noitom noitceriD fo tnemevom fo
eht emit adjusting msinahcem shall eb ylraelc 3 3 x106 300
10 x 106 1
dekram ot etacidni eht esaercni and esaerced fo 10 200
eht emit gnittes fo eht .yaler
5.6 Utilization Categories
4.8 General Operating Principle 5.6.1 noitazilitU seirogetac as nevig ni elbaT 2
lareneG gnitarepo elpicnirp fo eht citamuenp shall eb deredisnoc standard rof eht remit .syaler
emit yaled syaler is nevig ni xennA A.
Table 2 Utilization Categories
4.9 tI shall eb elbissop ot trevnoc syaler tuohtiw
yrailixua stiucric morf nO‘ ’yaleD ot ffO‘ ’yaleD Kind of Current Category Typical
epyt and eciv versa yb eht resu tuohtiw eht esu Applications
fo yna laiceps sloot ro .stnenopmoc CA AC-l 1 lortnoC fo ca
stengamortcele
5 SGNITAR DC 1-CD 1 lortnoC fo cd
stengamortcele
5.1 Rated Operational Voltage
The detar lanoitarepo egatlov shall eb eno fo 56.2 hcaE noitazilitu yrogetac is deziretcarahc
eht gniwollof :seulav yb eht gniwollof owt :scitsiretcarahc
roF ca -- 110, 240 and 415 stlov )a daoL ,snoitarepo and
roF cd - 24, 48, 110 and 220 .stlov )b detaR making and gnikaerb .yticapac
IS 5834 ( Part 1 ) : 1994
5.6.2.1 Load operations 5.8 Rating Resetting Time
ehT citamuenp syaler dluohs yliranidro eb elba ehT detar gnitteser emit fo eht yaleI shall ton
ot ,esolc maintain and nepo stiucric hcihw -noc eb erom than 40-O .sdnoces
tain an ,tengamortcele eht citengam tiucric fo
hcihw is nepo at eht emit nehw eht lautca
tnerruc is edam and desolc nehw eht lautca 5.9 Mechanical Endurance
tnerruc is .nekorb esehT snoitidnoc era nevig ni
elbaT 3, and eht rerutcafunam shall etats eht ehT syaler shall eb elbapac fo gnimrofrep eht
rebmun fo daol snoitarepo ,elbacilppa -serroc gnitarepo selcyc nevig ni 1oc 2 fo elbaT 1 at eht
gnidnop ot eht ecivres snoitidnoc as nevig ni 7 detar gnihctiws ycneuqerf and rednu eht detar
tuohtiw riaper ro tnemecalper fo its .stcatnoc making and gnikaerb .snoitidnoc
ehT detar daol-no gnitarepo selcyc shall eb 5.10 stimiL fo esiR-erutarepmeT
gnidrocca ot 1oc 3 fo elbaT 1.
5.10.1 ehT esir-erutarepmet fo eht suoirav parts,
5.6.2.2 Rated making and breaking capacity nehw detset rednu eht detar snoitidnoc and ni
ecnadrocca htiw 9.2, shall ton deecxe esoht
ehT remit syaler stcatnoc shall evah tneiciffus
nevig ni elbaT 4. ehT erutarepmet esir fo insula-
making and gnikaerb yticapac os as ot teem eht
det lioc ni ria shall ton deecxe eht stimil
lamronba snoitidnoc hcihw yam ,esira nehw an
deificeps ni elbaT 5, nehw derusaem yb noitairav
tengamortcele hguohtla ,dezigrene sliaf ot .esolc
fo ecnatsiser dohtem as nevig ni 8.3.3.2 fo
ehT snoitidnoc ot teem hcus stnemeriuqer era
SI 13947 ( traP 1 ) : 1993.
nevig ni elbaT 3. ehT detar makmg and -kaerb
gni yticapac fo a yaler sdnopserroc ot this .ytud
5.10.2 ehT erutarepmet stimil rof eht ,rotautca
ni ralucitrap rof eht parts dednetni ot eb -dnah
5.6.3 roF syaler denifed yb rieht noitazilitu
del ni ,ecivres shall eb as nevig ni elbaT 4.
,yrogetac ti is ton yrassecen ot yficeps yletarapes
eht detar making and gnikaerb ,yticapac and
5.10.3 ehT esir-erutarepmet stimil era desab no
eseht seulav dneped yltcerid no eht noitazilitu
eht noitpmussa that eht yaler shall eb detarepo
yrogetac nwohs ni elbaT 3.
rednu eht ecivres snoitidnoc nevig ni 7.
5.7 Rated Time Setting Range
ehT esir-erutarepmet seulav shall eb derusaem
ehT detar emit gnittes egnar fo eht yaler shall revo an tneibma erutarepmet ton gnideecxe
eb detats yb eht .rerutcafunam 40°C.
Table 3 Rated Making dna Breaking Capacities Conditions for Making and Breaking
Corresponding to the Utilization Categories
( Clauses 5.6.2.1, 5.6.2.2, 5.6.3 and 9.3.1 )
dniK fo yrogetaC roF daoL noitarepO roF detaR gnikaM dna gnikaerB yticapaC
tnerruC ----------c -__-----h - . -‘~ #----- .____-~-*--~--~ ~_
C_-__h___--7 ekaM -h---r Break --- -----f ekaM A ,----- r___-*__-__ Break ~
1 u soc + + I rU +soc $- I u *??oc d $- 1 rU *soc 4 4
gnitanretlA 11-CA 10 el Ue 0’7* - le Ue s4.0 - 11 el 1’1 Ue *7’0 - 11 cI 1’1 eU -*7’0
tnerruc
tceriD 1-CD 1 le Ue -- t eI eU - t 1’1 el 1’1 Ve - t 1’1 el 1’1 Ue - f
tnerruc
I = tnerruc ot eb edam ro ,nekorb
U = egatlov erofeb ,ekam
IC = detar lanoitarepo ,tnerruc
Ue = detar lanoitarepo ,egatlov dna
-L - = emit .tnatsnoc
R
ehT* rewop srotcaf detacidni era lanoitnevnoc seulav dna ylppa ylno ot eht tset stiucric hcihw etalumis eht
lacirtcele scitsiretcarahc fo lioc .stiucric tI dluohs eb deton ,taht rof eht tiucric htiw rewop rotcaf 0.4 ( lamron
snoitidnoc fo esu 1, tnuhs srotsiser era desu ni eht tset tiucric ot etalumis eht gnipmad tceffe fo eht ydde tnerruc
sessol fo eht actual .tengamortcele
rcdnUt .noitaredisnoc
4
IS 5834 ( Part 1) : I994
Table 4 Limits of Temperature-Rise
(Clauses5.10.1,5.10.2and9.2.3)
SI No. Type of Material and Description of Part Temerature-Rise
( Reference Ambien$Temperature : 40°C )
(1) (2)
i) tcatnoC :strap
a) reppoC C°54
)b revliS ro decaf-revlis detimiL ylelos yb eht ytissecen fo ton gnisuac yna
egamad ot tnecajoa .strap nI siht esac fo decaf-revlis
,tcatnoc eht ytitnauq fo revlis gnicaf llahs eb hcus
taht retfa gniyrrac tuo htnet-eno fo eht latot -mun
reb fo snoitarepo deificeps rof eht lacinahcem
ecnarudne tset ereht si llits a suounitnoc reyal fo
revlis no eht .stcatnoc fI ti si ton ,os eht tcatnoc
llahs eb dedrager sa reppoc .tcatnoc
)c llA rehto slairetam dna deretnis slatem To eb deificeps gnidrocca ot eht seitreporp fo eht
slatem desu dna detimil yb eht ytissecen fo ton -suac
gni yna egamad ot tnecajda .strap
)ii slanimreT rof lanretxe detalusni -cennoc *C”56
snoit
)iii cillateM strap gnitca sa sgnirps ehT erutarepmet dluohs ton hcaer a eulav at hcihw eht
yticitsale fo eht lairetam si .deriapmi roF erup
,reppoc siht seilpmi a latot erutarepmet ton -deecxe
gni .C°57
)vi lateM strap ni tcatnoc htiw gnitalusni detimiL ylelos yb eht ytissecen fo ton gnisuac yna
slairetam egamad ot eht gnitalusni slairetam
)v Manual gnitarepo :snaem
a) straP fo latem C°51
)b straP fo gnitalusni slairetam C°52
nehW* ti si nwonk taht eht slanimret lliw eb detcennoc ot erab srotcudnoc ro srotcudnoc detalusni htiw ssalC ,A
,E ,B F ro H slairetam ro dedivorp htiw a eveels fo hcus ,lairetam a esir-erutarepmet fo C°56 si .dettimrep sihT
esir-erutarepmet si osla dewolla rof eht noitcennoc fo srotcudnoc htiw rehto gnitalusni ,slairetam dedivorp taht
eht esir-erutarepmet fo eht srotcudnoc seod ton esuac yna egamad ot eht noitalusni at eht tniop erehw eht -noc
srotcud teem hcae rehto ro yllatnedicca teem suoregnad .strap
Table 5 Temper&we Rise Limits for detar eulav and an tneibma ria erutarepmet
Insulated Coils neewteb -- 5°C ot + 45°C. esehT stimil ylppa ot
cd and ca as .etairporppa
( esuaZC 5.10.1 )
ehT tuo-pord egatlov shall ton eb rehgih than
75 tnecrep ron rewol than 10 tnecrep fo detar
Thermal Classification Temperature Rise Limit lortnoc ylppus egatlov U,.
of Insulation Coils in Air
ehT esolc and pord tuo seulav deificeps evoba
(1) (2)
“C era elbacilppa retfa eht slioc evah dehcaer a
elbats erutarepmet gnidnopserroc ot etinifedni
ssalC A 75
noitacilppa fo 100 tnecrep U,. nI eht esac fo ca
ssalC E 90
,slioc eht egatlov stimil ylppa at detar .ycneuqerf
ssalC B 100
ssalC F 125 6.2 Limits of Error
ssalC H 150
ehT taeper ycarucca fo eht yaler gnitarepo emit
NOTE - The noitalusni noitacifissalc fo eht lioc si shall eb nihtiw &- 10 tnecrep neewteb eht
tnedneped no eht esu ro noissimo fo ,gnidnob
erutarepmet egnar fo -5°C ot + 45°C.
gnitangerpmi ro gnitaoc ecnatsbus ni eht -cafunam
erut fo slairetam ro ni eht tnemtaert fo detalusni
7 LAMRON ECIVRES SNOITIDNOC
.ylbmessa roF ecnatsni sa detats ni ssalC ,E -arepmet
erut yam eb desu rof noitanibmoc fo snoitalusni
7.1 Unless esiwrehto ,detats eht syaler shall eb
hcihw yam eb nwohs ot eb elbapac fo gnieb detarepo
at eht mumixam erutarepmet detats rof siht .ssalc elbatius rof esu rednu eht gniwollof ecivres
:snoitidnoc
6 STIMIL FO NOITAREPO
)a :erutarepmeT
6.1 Unless esiwrehto ,detats citamuenp-ortcele )1 ecnerefeR tneibma -met 40°C
syaler shall esolc htiw yna lortnoc ylppus egatlov erutarep rof erutarepmet
U, neewteb 85 tnecrep and 110 tnecrep fo its esir tnemerusaem
5