Iec 60384 14 2016

FIXED CAPACITORS FOR USE IN ELECTRONIC EQUIPMENT – Part 14: Sectional specification – Fixed capacitors f or electromagnetic interf erence suppression and connection to the supply mains 1

Fix ed capacit ors for use in elect ronic equipment –

Part 14: Sect ional specificat ion – Fix ed capacit ors for elect romagnet ic

inter erence suppression and connect ion to the supply mains

Partie 14: Spécificat ion int ermédiaire – Condensat eurs fix es d'ant iparasit age

et raccordement à l'al ment at ion

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Fix ed capacitors for use in elect ronic equipment –

Part 14: Sect ional specification – Fix ed capacit ors for elect romagnet ic

int er erence suppression and connect ion t o t he supply mains

Partie 14: Spécificat ion int ermédiaire – Condensat eurs fix es d'ant iparasit age

et raccordement à l'al mentat ion

W arnin ! Mak e s re th t you o tain d this publc tion from a a thorize distribut or

A tt ention! Veui ez vou a s rer qu vou avez o te u c t te publc tion v ia u distribute r a ré

c olour

inside

IEC 60384- 1 4

Edit io 4.1 2 16-0

Fix ed capacit ors for use in elect ronic equipment –

Part 14: Sect ional specificat ion – Fix ed capacit ors for elect romagnet ic

inter erence suppression and connect ion to the supply mains

Partie 14: Spécificat ion int ermédiaire – Condensat eurs fix es d'ant iparasit age

et raccordement à l'al ment at ion

CONTENTS

FOREWORD 6

1 General 8

1.1 Sco e 8

1.2 Object 8

1.3 Normative ref eren es 8

1.4 Inf ormation to b given in a detai sp cif i ation 9

1.4.1 Outl ne drawin an dimen ion 9

1.4.2 Mou tin 10 1.4.3 Ratin s an c aracteristic 10 1.4.4 Markin 10 1.5 Terms an def i ition 10 1.6 Markin 15 1.6.1 Markin of ca acitors 15 1.6.2 Markin of p c agin 15 1.6.3 Ad itional markin 16 1.7 Clas ifi ation of Clas X an Clas Y ca acitors 16 1.7.1 Clas ifi ation of X ca acitors 16 1.7.2 Clas ifi ation of Y ca acitors 16 2 Pref er ed ratin s an c aracteristic 17 2.1 Pref er ed c aracteristic 17 2.1.1 Pref er ed cl matic categories 17 2.2 Pref er ed values of atin s 18 2.2.1 Nominal ca acitan e (C N ) 18 2.2.2 Toleran e on nominal ca acitan e 18 2.2.3 Rated voltage (U R ) 18 2.2.4 Nominal resistan e (R N ) 18 2.2.5 Rated temp rature 18 2.2.6 Pas ive f lamma i ty 18 2.3 Req irements for sle vin , ta e, tubin an wire in ulation 18 3 As es ment proced res 19 3.1 Primary stage of man facture 19 3.2 Stru tural y simiar comp nents 19 3.3 Certif ied record of rele sed lots 19 3.4 Ap roval testin 19 3.4.1 Saf ety tests only a proval 19 3.4.2 Qual f i ation a proval 19 3.4.3 Qual f i ation a proval on the b sis of the fi ed sample size proced re 19 3.5 Qual ty conf orman e in p ction 3

3.5.1 Formation of in p ction lots 30 3.5.2 Test s hed le 31

3.5.3 Delayed del very 31

3.5.4 As es ment level 31

4 Test an me s rement proced res 3

4.1 Vis al examination an c ec of dimen ion 3

4.1.1 Cre p ge distan es an cle ran es 3

4.2 Electrical tests 3

4.2.1 Voltage pro f 3

4.2.2 Ca acitan e 3

4.2.3 Tan ent of los an le 3

4.2.4 Resistan e (Eq ivalent Series Resistan e (ESR) (for RC u its only) 3

4.2.5 In ulation resistan e 3

4.3 Ro u tnes of termination 3

4.4 Resistan e to solderin he t 3

4.4.1 Test con ition 3

4.4.2 Final in p ction, me s rements an req irements 38 4.5 Soldera i ty 3

4.5.1 Test con ition 3

4.5.2 Req irements 3

4.6 Ra id c an e of temp rature 3

4.6.1 Final in p ction 3

4.7 Vibration 3

4.7.1 Test con ition 3

4.7.2 Final in p ction 3

4.8 Bump 3

4.8.1 Test con ition 3

4.8.2 Final in p ction, me s rements an req irements 39 4.9 Shoc 3

4.9.1 Test con ition 3

4.9.2 Final in p ction, me s rements an req irements 40 4.10 Container se l n 40 4.10.1 Test con ition 4

4.10.2 Req irements 4

4.1 Cl matic seq en e 40 4.1 1 Initial me s rements 4

4.1 2 Dry he t 41

4.1 3 Damp he t, c cl c, test Db, f irst c cle 41

4.1 4 Cold 41

4.1 5 Damp he t, c cl c, test Db, remainin c cles 41

4.1 6 Final in p ction, me s rements an req irements 41 4.12 Damp he t, ste d state 41

4.12.1 Initial me s rements 4

4.12.2 Test con ition 4

4.12.3 Final in p ction, me s rements an req irements 42 4.13 Impulse voltage 42 4.13.1 Initial me s rements 4

4.13.2 Test con ition 4

4.13.3 Req irements 4

4.14 En uran e 4

4.14.1 Test con ition 4

4.14.2 Initial me s rements 4

4.14.3 En uran e for Clas X ca acitors an RC u its containin Clas X ca acitors 4

4.14.4 En uran e for Clas Y ca acitors an RC u its containin Clas Y ca acitors 4

4.14.5 En uran e for the le d-throu h ar an ements 4

4.14.6 Test con ition – Combined voltage/c r ent tests 4

4.14.7 Final in p ction, me s rements an req irements 46 4.15 Charge an dis harge 46 4.15.1 Initial me s rements 4

4.15.2 Test con ition 4

4.15.3 Final me s rements an req irements 4

4.16 Radiofreq en y c aracteristic 4

4.17 Pas ive f lamma i ty test 4

4.17.1 Testin ac ordin to IEC 6 3 4-1 4

4.17.2 Alternative p s ive f lamma i ty test 4

4.18 Active f lamma i ty test 4

4.18.3 Adju tment of U i 5

4.18.4 Req irements 5

4.19 Comp nent solvent resistan e (if a pl ca le) 5

4.2 Solvent resistan e of the markin 51

An ex A (normative) Circ it for the impulse voltage test 5

An ex B (normative) Circ it for the en uran e test 5

An ex C (normative) Circ it f or the c arge an dis harge test 55 An ex D (normative) Declaration of desig (con dential to the man f acturer an the certif i ation b d ) 5

An ex E (informative) Pulse test circ its 5

An ex F (normative) Partic lar req irements for saf ety test of s rf ace mou tin ca acitors 5

An ex G (informative) Ca acitan e agein of f i ed ca acitors of ceramic dielectric, Clas 2 6

An ex H (normative) Use of saf ety a proved a.c rated ca acitors in d.c a pl cation 6

An ex I (normative) Humidity ro u tnes grades for a pl cation , where hig sta i ty u der hig h midity o eratin con ition is req ired 6

Bibl ogra h 6

Fig re 1 – Two-terminal EMI s p res ion ca acitor 1

Fig re 2 – RC u it 1

Fig re 3 – L ad-throu h ca acitor (co xial) 1

Fig re 4 – L ad-throu h ca acitors 12 Fig re 5 – By-p s ca acitors 13 Fig re 6 – Test d ration (s) 3

Fig re 7 – Impulse wave f orm 4

Fig re 8 – Typical circ it f or pulse lo din of ca acitors u der a.c voltage 4

Fig re 9 – Fu damental a.c wave with ran omly, not s n hronized, s p rimp sed hig -voltage pulse 5

Fig re A.1 – Impulse voltage test circ it 5

Fig re B.1 – En uran e test circ it 5

Fig re C.1 – Charge an dis harge test circ it 5

Fig re F.1 – Example of test s bstrate f or safety test ac ordin to Ta le F.1 61

Ta le 2 – Clas if i ation of Clas Y ca acitors 17

Ta le 3 – Sampln plan – Tests con ernin safety req irements only 21

Ta le 4 – Sampln plan – Safety an p rforman e tests q al fi ation a proval – As es ment level DZ 2

Ta le 5 – Test s hed le an sampln plan for lot-by-lot tests 23 Ta le 6 – Test s hed le for saf ety tests only (1 of 2) 2

Ta le 7 – Test s hed le for saf ety an p rf orman e tests q al f i ation a proval – As es ment level DZ (1 of4) 2

Ta le 8 – As es ment level 32 Ta le 9 – Cre p ge distan es an cle ran es 3

Ta le 10 – Voltage pro f 3

Ta le 1 – In ulation resistan e – Saf ety tests only 3

Ta le 12 – In ulation resistan e – Saf ety an p rforman e tests 3

Ta le 13 – Resistan e to solderin he t – Req irements 3

Ta le 14 – Cl matic seq en e – Req irements 41

Ta le 15 – Damp he t, ste d state – Req irements 4

Ta le 16 – En uran e – Req irements 4

Ta le 17 – Charge an dis harge – Req irements 4

Ta le A.1 – Values of C X , C T , R P , R , C p 5

Ta le A.2 – Values an toleran es of C X , t r , t d 5

Ta le F.1 – Test s hed le an sampl n plan for saf ety test of s rface mou t ca acitors 6

Ta le H.1 – Ad itional test con ition 6

Ta le I 1 – Req irements 6

INTERNATIONAL ELECTROTECHNICAL COMMISSION

Part 14: Sectional specification –

Fixed capacitors f or electromagnetic interf erence

suppression and connection to the supply mains

1 Th Intern tio al Ele trote h ic l Commis io (IEC) is a worldwid org niz tio for sta d rdiz tio c mprisin

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DISCLAIMER

This Con ol d te v rsion is not a of f icial IEC Sta dard a d ha be n prepare f or

us r conv nie c Only the c r e t v rsion of the sta dard a d its ame dme t s)

are to be considere the of ficial doc me ts

This Consol date v rsion of IEC 6 3 4-14 be rs the e ition number 4.1 It consists of

cor ig ndum 1 (2 16-0 ) a d its ame dme t 1 (2 16-0 ) [doc me ts 4 /2 6 /FDIS a d

4 /2 6 /RVD] The te h ic l conte t is ide tic l to the ba e e ition a d its ame dme t

In this Re l ne v rsion, a v rtic l l n in the margin s ows where th te h ic l conte t

is modif ie by ame dme t 1 Addition are in gre n te t, d letions are in strik through

publ c tion

International Stan ard IEC 6 3 4-14 has b en pre ared by IEC tec nical commite 4 :

Ca acitors an resistors f or electronic eq ipment

This f ourth edition con titutes a tec nical revision Al c an es that have b en agre d up n

can b categorized as minor revision

A l st of al the p rts of the IEC 6 3 4 series, publ s ed u der the general title Fix ed

c p citors for u e in electro ic e uipme t, can b fou d on the IEC we site

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IMPORTANT – The “colour inside” logo on the cov r pa e of this publ c tion indic te

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FIXED CAPACITORS FOR USE IN ELECTRONIC EQUIPMENT –

Part 14: Sectional specification –

Fixed capacitors f or electromagnetic interf erence

suppression and connection to the supply mains

1.1 Sco e

This p rt of IEC 6 3 4 a pl es to ca acitors an resistor ca acitor combination whic wi b

con ected to an a.c main or other s p ly with nominal voltage not ex e din 1 0 0 V a.c

(r.m.s.) or 1 0 0 1 5 0 V d.c an with a nominal f req en y not ex e din 10 Hz

1.2 Obje t

The prin ip l o ject of this p rt of IEC 6 3 4 is to pres rib pref er ed ratin s an

c aracteristic an to select from IEC 6 3 4-1, the a pro riate q al ty as es ment

proced res, tests an me s rin method an to give general p rforman e req irements f or

this typ of ca acitor Test severities an req irements pres rib d in detai sp cif i ation

ref er in to this sectional sp cifi ation wi b of eq al or hig er p rf orman e level; lower

p rforman e levels are not p rmited

This stan ard also provides a s hed le of safety tests to b u ed by national testin station

in cou tries where a proval by s c station is req ired

The overvoltage categories in combination with the a.c main voltages f or the ca acitors

clas if ied in this stan ard s ould b taken from IEC 6 6 4-1

1.3 Normativ ref ere c s

The f olowin doc ments, in whole or in p rt, are normatively referen ed in this doc ment an

are in isp n a le for its a pl cation For dated ref eren es, only the edition cited a pl es For

u dated ref eren es, the latest edition of the referen ed doc ment (in lu in an

amen ments) a pl es

IEC 6 0 0-1:2 10, H ig -v lta e te t tec niq e – P art 1: Ge eral d efinition a d test

re uireme ts

IEC 6 0 3, P refered n mb r s rie for re istors a d c p citors

IEC 6 0 5:2 01, Aud io, vide a d similar ele tro ic a p ratus – Safety re uireme ts

Amen ment 1:2 0

Amen ment 2:2 10

IEC 6 0 8-1:19 8, En iro me tal te tin – P art 1: Ge eral a d g id an e

IEC 6 0 8-2-17, Enviro me tal te ting – P art 2-17 : Te ts – Te t Q: Se ling

IEC 6 3 4-1:2 0 , Fix ed c p citors for u e in electro ic e uipme t – P art 1: Ge eric

s e ific tio

IEC 6 417, Gra hic l s mb ls for u e o e uipme t

IEC 6 6 4-1, In ulatio c ordinatio for e uipme t within low-v lta e s stems – P art 1:

P rin iple , re uireme ts a d te ts

IEC 6 6 5-1 -10, Fire h z rd te tin – P art 1 -10: Te t flame – 50 W h riz ntal a d

v rtic l flame test methods

IEC 6 9 0, Guidan e informatio o th a p c tio of c p citors, re istors, indu tors a d

c mplete filter u its for radio interere c s p re sio

IEC 61 9 -2, Qu lity a s s me t s stems – P art 2: Sele tio a d u e of s mp n pla s for

in p ctio ofelectro ic c mp n nts a d p c a e

IEC 61210, Co n ctin devic s – Flat q ic -c n e t termin tio s for electric l c p er

c nductors – Safety re uireme ts

filterin devic s

ISO 7 0 , Gra hic l s mb ls for u e o e uipme t – I ndex a d s n p is

1.4 Inf ormation to be giv n in a detai spe if ic tion

Detai sp cifi ation s al b derived f rom the relevant blan detai sp cif i ation

Detai sp cifi ation s al not sp cif y req irements inf erior to those of the generic, sectional

or blan detai sp cif i ation When more severe req irements are in lu ed, they s al b

l sted in 1.9 of the detai sp cif i ation, an in icated in the test s hed les, f or example, by an

asteris

The f ol owin inf ormation s al b given in e c detai sp cifi ation an the values q oted

s al prefera ly b selected from the a pro riate clau e of this sectional sp cif i ation

NOT Th inf ormatio giv n in 1.4.1 ma , for c n e ie c , b pre e te in ta ular form

1.4.1 Outl ne drawing a d dime sions

There s al b an i u tration of the ca acitor as an aid to e s recog ition an f or comp rison

of the ca acitor with others Dimen ion an their as ociated toleran es, whic af fect

interc an e bi ty an mou tin , s al b given in the detai sp cif i ation Al dimen ion s al

pref era ly b stated in mi imetres; however, when the original dimen ion are given in

in hes, the con erted metric dimen ion in mi imetres s al b ad ed

Normal y, the n merical values s al b given f or the len th, width an heig t of the bod an

the wire sp cin , or f or c l n rical typ s, the b d diameter an the len th an diameter of

the termination When neces ary, f or example when a n mb r of ca acitan e values/voltage

ran es are covered by a detai sp cif i ation, their dimen ion an their as ociated toleran es

s al b placed in a ta le b low the drawin

When the con g ration is other than that des rib d a ove, the detai sp cifi ation s al state

s c dimen ional inf ormation as wi adeq ately des rib the ca acitor When the ca acitor is

not desig ed f or u e on printed b ard , this s al b cle rly stated in the detai sp cifi ation

1.4.2 Mounting

The detai sp cif i ation s al sp cif y the method of mou tin to b a pl ed f or normal u e an

f or the a plcation of the vibration, bump or s oc tests The ca acitors s al b mou ted by

their normal me n The desig of the ca acitor may b s c that sp cial mou tin f i tures

are req ired in its u e In this case, the detai sp cif i ation s al des rib the mou tin

f i tures an they s al b u ed in the a pl cation of the vibration, bump or s oc tests

If recommen ation for mou tin for "normal" u e are made, they s ould b in lu ed in the

detai sp cif i ation u der "1.8 Ad itional information (Not f or in p ction purp ses)" If

recommen ation are in lu ed, a warnin can b given that the f ul vibration, bump an s oc

p rforman e may not b avai a le if mou tin method other than those sp cif ied in 1.1 of the

detai sp cif i ation are u ed

1.4.3 Rating a d c ara teristic

The ratin s an c aracteristic s al b in ac ordan e with the relevant clau es of this

sp cif i ation, together with the fol owin

1.4.3.1 Nominal c pa ita c ra g

The pref er ed ran e of ca acitan e values s ould f ol ow 2.2.1 of this stan ard

When prod cts a proved to the detai sp cifi ation have dif f erent ran es, the f olowin

statement s ould b ad ed: "The ran e of values avai a le in e c voltage ran e is given in

the register of a provals, avaia le f or example on the we site www.iec org”

1.4.3.2 Nominal re ista c ra ge (if appl c ble)

The prefer ed ran e of esistan e values s ould f ol ow 2.2.4 of this stan ard

1.4.3.3 Partic lar c ara teristic

Ad itional c aracteristic may b lsted, when they are con idered neces ary to sp cif y the

comp nent adeq ately f or desig an a pl cation purp ses

ca acitor desig ed es ential y for a pl cation with a p wer freq en y alternatin voltage

Note 1 to e try: a.c c p citors ma b u e o d.c s p le h vin th s me v lta e a th a.c r.m.s rate

v lta e of th c p citor

1.5.2

ele troma netic interf ere c s p re sion c pa itor

radio interf eren e s p res ion ca acitor

a.c ca acitor u ed f or the red ction of electromag etic interf eren e cau ed by electrical or

electronic a p ratu , or other sources

1.5.3

c pa itor of Cla s X

RC unit of Cla s X

ca acitor or RC u it of a typ s ita le f or u e in situation where fai ure of the ca acitor or

RC u it would not le d to dan er of electrical s oc but could res lt in a ris of f ire

two- erminal c pa itor

electromag etic interf eren e s p res ion ca acitor havin two terminals

Note 1 to e try: In this sta d rd, wh re th word "c p citor a p ars, th word "c p citor or R u it" s o ld b

u d rsto d wh re th c nte t p rmits

1.5.7

le d- hroug c pa itor, <coa ial>

ca acitor with a central c r ent-car yin con u tor s r ou ded by a ca acitor element whic

is s mmetrical y b n ed to the central con u tor an to the outer casin to f orm a co xial

con tru tion; it is co xial y mou ted

1.5.8

le d- hroug c pa itor, < on-coa ial>

ca acitor in whic the s p ly c r ents f low throu h or acros the electrodes

Figure 4b – Le d- hroug c pa itor for a ymmetric l u e (n n-coaxial

Eart he met al c s IEC 13 16/3

Figure 4 – Multiple unit le d-hroug c pa itor (n n-coaxial

for s mmetric l an a ymmetric l u e

c p citor in a metal c s with o e termin tio c n e te to th c s a in Fig re 5 ; th d lta f orm c n ists of a

X-c p citor a d two Y2-c p citors ar a g d in a d lta n twork a in Fig re 5 ; th T-c n e te f orm c n ists of

thre c p citors C

A, C

Wh n T-c n e te c p citors are s bmite to te ts, a d it is state th t v lta e s al b a ple a ro s th

X-c p citors, s c v lta e s al b a ple b twe n th ln a d n utral termin tio s Simiarly, wh n it is state

th t v lta e s al b a ple a ro s th Y-c p citors, s c v lta e s al b a ple b twe n th ln a d n utral

termin tio s c n e te to eth r a d th e rth termin tio

Figure 5 – E ample of a T-co ne ted by-pa s c pa itor (in n n-metal c h u in )

NOT For c p citors with n n-metal c h u in s, th e rth c n e tio is bro g t o t a a s p rate termin tio a

is s own in Fig re 5

Figure 5 – By-pa s c pa itors

1.5.10

rate volta e

either the r.m.s o eratin voltage of ated f requen y, or the d.c o eratin voltage, whic may

b a pl ed contin ou ly to the termination of a ca acitor at an temp rature b twe n the

lower an the up er category temp ratures

Note 1 to e try: This imple , for c p citors c v re b this sta d rd, th t th c te ory v lta e is th s me a th

rate v lta e

1.5.1

rate power, <of a s rie RC unit>

maximum p wer whic can b dis ip ted by the RC u it at the rated temp rature d rin

contin ou o eration

1.5.12

upper c te ory temperature

maximum s rf ace temp rature f or whic the ca acitor has b en desig ed to o erate

contin ou ly

Note 1 to e try: For le d-thro g c p citors a d s rie R u its, th e tern l s ra e temp rature c n b

afe te b intern l h atin d e to th le d-thro g c re t Th termin tio s of a c p citor are c n id re to b

p rt of th e tern l s rf ac

Note 2 to e try: This d f i itio re la e th t giv n in IEC 6 3 4- :2 0 , 2.2.41, b c u e s p re sio c p citors

in a c rd n e with this sta d rd are inte d d to b c n e te to th main n twork a d ma h v intern l h at

g n ratio a a re ult

1.5.13

lower c te ory temperature

minimum s rf ace temp rature for whic the ca acitor has b en desig ed to o erate

contin ou ly

Note 1 to e try: This d f i itio re la e th t giv nin IEC 6 3 4- :2 0 , 2.2.10

1.5.14

rate temperature, <of a le d- hrough c pa itor or s rie RC unit>

maximum ambient temp rature at whic a le d-throu h ca acitor can car y its rated le d

-throu h c r ent or a series RC u it can dis ip te its rated p wer

Note 1 to e try: This d f i itio re la e th t in IEC 6 3 4- :2 0 , 2.2.2

rate c r e t of the conductors, <le d- hrou h c pa itor>

maximum p rmis ible c r ent f lowin throu h the con u tors of the ca acitor at the rated

temp rature d rin contin ou o eration

1.5.17

main re on nt fre ue c , <two- erminal c pa itor>

lowest f req en y at whic the imp dan e of the ca acitor is a minimum when a plyin a

sin soidal voltage

1.5.18

impuls volta e

p riodic tran ient voltage of a def i ed waveform as des rib d in IEC 6 0 0-1

a tiv f lammabi ity

a i ty of a ca acitor to burn with a f lame as a con eq en e of electric lo din

1.6 Marking

Se IEC 6 3 4-1:2 0 , 2.4 with the fol owin detai s

The inf ormation given in the markin is normal y selected from the fol owin l st; the relative

imp rtan e of e c item is in icated by its p sition in the lst:

a) man facturer's name or trademark;

b) man facturer's typ desig ation or the typ desig ation given in the detai sp cif i ation;

c) ca acitor clas an s bclas ;

d) recog ized a proval mark;

e) nominal ca acitan e(s) an nominal resistan e;

f ) rated voltage an nature of s p ly (alternatin voltage may b in icated by the s mb l

(IEC 6 417-5 3 :2 0 ) an direct voltage by the s mb l (IEC 6 417-5 31:2 0 ) or

 , also a.c an d.c resp ctively f or alternatin voltage an direct voltage can b

u ed;

g) the method of con ection, if neces ary;

h) rated c r ent of the con u tor (in the case of a le d-throu h ca acitor);

i) toleran e on rated ca acitan e if dif ferent from ± 0 %;

j) cl matic category, fol owed by a let er in icatin p s ive f lamma i ty category;

k) rated temp rature;

l) ye r an month (or we k) of man facture;

m) ref eren e to the detai sp cif i ation

1.6.1 Marking of c pa itors

The ca acitor s al b cle rly marked with a), b) an c) an also d), e) an f) if these are not

impl ed by b), an as man of the remainin items as are con idered neces ary by the

man facturer The markin s al b s f f icient to ena le a cle r identif i ation of the comp nent

to b made

NOT For s ra e mo nt c mp n nts, s e An e F

It is recommen ed that a caution mark b printed on the printed circ it b ard where a saf ety

comp nent is mou ted The caution mark s al b ISO 7 0 -0 3 :2 0 The mark is in the

f orm of an uprig t eq i ateral trian le containin an ex lamation mark

This caution mark is ref er ed to in IEC 6 0 5:2 01, 5.3 An d pl cation of inf ormation in the

markin on the ca acitor s ould b avoided

1.6.2 Marking of pa k gin

The p c age containin the ca acitor(s) s al b cle rly marked with al the information l sted

a ove National a provals may b in icated by leterin as an alternative to the a proval

mark

1.6.3 Additional marking

An ad itional markin s al b a pl ed in s c a way that no confusion can arise

1.7 Cla sific tion of Cla s X a d Clas Y c pa itors

1.7.1 Cla sif ic tion of X c pa itors

Clas X ca acitors are divided into two s bclas es (se Ta le 1) ac ordin to the p ak

voltage of the impulses s p rimp sed on the main voltage to whic they may b s bjected in

service Su h impulses may arise f rom l g tnin strikes on outside l nes, from switc in in

neig b urin eq ipment, or switc in in the eq ipment in whic the ca acitor is u ed

Table 1 – Cla sific tion of Cla s X c pa itors

F

104

6NP

−

=

CU

F

10

5,2

6NP

−

=

CU

X1 c p citors ma b s b titute b Y2 or Y1 c p citors of th s me or hig er U

R X2 c p citors c n

b s b titute with X1 or Y2 or Y1 c p citors of th s meor hig er U

R

NOT 1 Th fa tor u e for th re u tio of U

Pfor c p cita c v lu s a o e 1,0 µ maintain

0,5 ×C

NU

Table 2 – Cla sific tion of Cla s Y c pa itors

Subcla s Type of ins latio brid ed

6NP

−

=

CU

NOT 1 For d finitio s of b sic, s p leme tary, d u le a d reinforc d in ulatio , s e IEC 61 4

The en los re of a Y1-ca acitor s al not contain other comp nents

As embl es, l ke Delta by-p s or T-con ected by-p s ca acitors, may b con tru ted from

Y-ca acitors an X-ca acitors provided these ca acitors fulf il the req irements f or the

relevant X an Y s bclas es

One Y-ca acitor may brid e b sic in ulation One Y-ca acitor may brid e s p lementary

in ulation If combined b sic an s p lementary in ulation are brid ed by two or more Y2- or

Y4-ca acitors in series, they s al have the same clas an s b-clas , the same rated voltage

an the same nominal ca acitan e value

2 Pref er ed ratings and characteristics

2.1 Pref er e c ara teristic

The values given in detai sp cif i ation s al pref era ly b selected from the folowin

2.1.1 Pref er e cl matic c te orie

The ca acitors covered by this stan ard are clas if ied into cl matic categories ac ordin to

the general rules given in IEC 6 0 8-1:19 8, An ex A

The lower an up er category temp rature an the d ration of the damp he t, ste d state

test s al b c osen from the f ol owin :

– lower category temp rature: – 5 °C, – 5 °C, – 0 °C, – 5 °C an –10 °C;

– up er category temp rature: + 5 °C, +10 °C, +10 °C, +12 °C an +15 °C;

– d ration of the damp he t, ste d state test: 21 an 5 day

The severities f or the cold an dry he t tests are the lower an up er category temp ratures

resp ctively

For g idan e on the a plcation of the categories des rib d a ove, se IEC 6 9 0

2.2 Pref er e v lu s of rating

N)

The pref er ed values of nominal ca acitan e are:

1, 1,5, 2,2, 3,3, 4,7, 6,8 an their decimal multiples

These values conform to the E6 series of prefer ed values given in IEC 6 0 3

2.2.2 Tolera c on nomin l c pa ita c

The maximum toleran e on nominal ca acitan e is ± 0 %

2.2.3 Rate volta e (U

R)

The prefer ed values of rated voltage are 12 V, 2 0 V, 2 5 V, 4 0 V, 4 0 V, 5 0 V, 7 0 V

an 1 0 0 V

Electromag etic interf eren e s p res ion ca acitors s ould b c osen to have a rated

voltage eq al to, or gre ter than, the nominal voltage of the s p ly s stem to whic they are

con ected The desig of the ca acitors s ould take into ac ou t the p s ibi ty that the

voltage of the s stem may rise by up to 10 % a ove its nominal voltage In star con ection

the maximum voltage over the ca acitors s al b calc lated in the worst p s ible case when

the nominal ca acitan e toleran es of the ca acitors u ed are con idered

2.2.4 Nominal re ista c (R

N)

Pref er ed values of nominal resistan e s al b taken from the E6 series of IEC 6 0 3

The rated temp rature for le d-throu h ca acitors an series RC u its s al b not les than

+ 0 °C

2.2.6 Pa siv flammabi ty

The prefer ed category of p s ive f lamma i ty p rmited is Category B (se 4.17) If

category C is u ed, it has to b agre d b twe n the comp nent s p l er an the c stomer

Se 4.17 also f or alternative p s ive f lamma i ty testin

Exemption: For comp nents smaler than 1 7 0 mm

3

p s ive flamma i ty category C is

p rmited

Pas ive f lamma i ty categories b ter than C may req ire f lame retardant ad itives whic

may b con idered to cau e en ironmental imp ct These categories s ould b s bject to

dis u sion b twe n man f acturers an c stomers to f i d a compromise b twe n safety an

en ironmental req irements

2.3 Re uireme ts for sle ving, tape, tubin a d wire ins lation

Sle vin , ta e, tubin an wire in ulation u ed in the comp nents f al n u der this stan ard

s al b rated f or the voltage in olved an the temp rature atained u der an con ition of

actual u e They s al b f lame retardant ac ordin to Clas VW1

If in ulated terminals are req ested, the prefera le colours s ould b tran p rent or white

3 As essme t proce ures

3.1 Primary sta e of ma uf acture

For wou d ca acitors, the primary stage of man f acture is the win in of the ca acitor

element F r sin le-layer ceramic ca acitors, it is the metal zation of the dielectric to f orm the

electrodes For f i ed multi ayer ceramic ca acitors, it is the f irst common f irin of the

dielectric-electrode as embly For other typ s of ca acitor, it s al b the same as that given

in the sectional sp cif i ation f or the dielectric u ed

3.2 Stru tural y simi ar compone ts

Ca acitors con idered as b in stru tural y simi ar are ca acitors prod ced with es ential y

the same proces es an materials, thou h they may b of dif ferent case sizes an

ca acitan e values, but of the same clas an rated voltage

3.3 Certif ie re ord of rele s d lots

The inf ormation req ired in IEC 6 3 4-1:2 0 , Clau e Q.9, s al b made avai a le when

pres rib d in the detai sp cif i ation an when req ested by a c stomer Af ter the en uran e

test the p rameters f or whic varia les information is req ired are ca acitan e c an e,

resistan e c an e (for RC u its), tan δ an in ulation resistan e

3.4.1 Saf ety te ts only approv l

Ta les 3 an 6 f orm a s hed le l mited to tests con ernin safety only req irements The

s hed le to b u ed for saf ety tests only a proval wi b on the b sis of f i ed sample sizes

as given in 3.4.3 an Ta le 3 of this stan ard Prior to the a proval testin b in car ied out,

it is neces ary to s bmit to the certifi ation b d a declaration of desig (se An ex D)

registerin es ential data an b sic desig detai s of the ca acitors for whic a proval is

sou ht

3.4.2 Qual fic tion approv l

Ta les 4, 5 an 7 s al b u ed when q al fi ation a proval is sou ht

The proced res f or q al fi ation a proval testin are given in the generic sp cif i ation,

IEC 6 3 4-1:2 0 , Clau e Q.5, in whic Q.5.3 ) ref ers to lot-by-lot an p riodic in p ction

The s hed les to b u ed f or q al f i ation a proval testin on the b sis of lot-by-lot an

p riodic in p ction are given in 3.5 an Ta le 8 of this stan ard The s hed le to b u ed f or

q al f i ation a proval testin on the b sis of f i ed sample sizes ac ordin to

IEC 6 3 4-1:2 0 , Q.5.3 ), is given in 3.4.3 an Ta les 4 an 5 of this stan ard For the two

proced res, the sample sizes an the n mb r of p rmis ible non onformin items s al b of

comp ra le order The test con ition an req irements s al b the same Qual f i ation

a proval ac ordin to the f i ed sample sizes of Ta les 4 an 5 is prefer ed

3.4.3 Qual fic tion approv l on the ba is of th f ix d s mple size proc dure

3.4.3.1 Sampl ng

q al f ied The total numb r of ca acitors of e c rated voltage in e c group is given in

Ta les 3, 4 an 5 For multi-section ca acitors containin section of dif f erent clas es an for

le d-throu h ca acitors, larger n mb rs are req ired as in icated

The sample s al contain eq al n mb rs of sp cimen of the hig est an lowest ca acitan e

values in the ran e to b q al f ied, ex e t for the p s ive flamma i ty test of 4.17 an the

active f lamma i ty test of 4.18 F r the p s ive f lamma i ty test, the rules of sampl n in

4.17, footnote d) to Ta le 3 an f ootnote h) to Ta le 4 s al b fol owed For the active

f lamma i ty test, the rules of sampl n in 4.18 s al b f ol owed For RC u its, the sample of

hig est ca acitan e values an the sample of the lowest ca acitan e values s al contain

e c , as ne rly as p s ible, an eq al n mb r of resistors of the hig est an lowest resistan e

value in the ran e to b q al f ied Where only one ca acitan e value is in olved, the total

n mb r of ca acitors as stated in Ta les 3, 4 an 5 s al b tested

Sp re sp cimen are p rmited as f ol ows:

a) one p r ca acitan e value whic may b u ed to re lace the p rmited non onf ormin

item in Group 0;

b) the remain er of the sp re sp cimen may b req ired, if it is neces ary, to re e t an

test ac ordin to the provision of f ootnote a) of either Ta les 3 or 4

The n mb rs given in Group 0 as ume that al s bgroups are a pl ca le If this is not so, the

n mb rs may b red ced ac ordin ly

When ad itional groups are introd ced into the q al f i ation a proval test s hed le, the

n mb r of sp cimen req ired f or Group 0 s al b in re sed by the same n mb r as that

req ired for the ad itional groups

Ta les 3, 4 an 5 give the n mb r of sp cimen to b tested in e c group or s bgroup

together with the p rmis ible n mb r of non onf ormin items in e c case

Where a ran e of ceramic ca acitors to b q alf ied con ists of dif f erent temp rature

c aracteristic (or co f ficients) or the ran e of ca acitors employ sig if i antly dif f erent

materials, the samples for Groups 2, 3 an 7 s al contain the sp cified quantity of sp cimen

f or e c temp rature c aracteristic (or co f ficients) or dielectric material group as sp cif ied

One of the complete series of tests in icated in Ta les 3, 4 or 5 is req ired f or the a proval of

ca acitors of a sin le rated voltage covered by one detai sp cif i ation The tests of e c

group s al b car ied out in the order given

The whole sample s al b s bjected to the tests of Group 0 an then s bdivided for the other

Ap roval is granted when the n mb r of non onformin is zero

Fixed sample size test s hed les for saf ety tests only are given in Ta les 3, 5 an 6, f or

saf ety an p rf orman e q al f i ation a proval in Ta les 4, 5 an 7 Ta les 3, 4 or 5 in lu e

the detai s f or the sampln an p rmis ible non onformin items for the dif ferent tests or

groups of tests Ta les 6 or 7, together with the detai s of test contained in Clau e 4, give a

complete s mmary of test con ition an p rf orman e req irements an in icate where, for

test method or con ition of test, a c oice s al b made in the detai sp cif i ation

The con ition of test an p rforman e req irements f or the f i ed sample size s hed le

s ould b identical to those pres rib d in the detai sp cifi ation for the q al ty conforman e

+

6c

+

6 to18d

+ 4

14 + 6c

12b

6c

0a

If multi-s ctio c p citors c n istin of X- a d Y-c p citors are to b te te , 12 s e ime s s al b ta e

for th te ts o th X-c p citors a d 12 oth r s e ime s for th te ts o th Y-c p citors

Table 4 – Sampl ng pla – Saf ety a d performa c te ts qu l f ic tion approv l –

n nco formin items per

rated v ltage an s bcla s

+

6e

+

6 to18h

+ 4

2

0a

12d

6e

If o e n n o f ormin item is o tain d, al th te ts of th gro p s al b re e te o a n w s mple a d th n n

furth r n n o f ormin items are p rmite

If multi-s ctio c p citors c n istin of X- a d Y-c p citors areto b te te , 12 s e ime s s al b ta e for th

te ts o th X-c p citors a d 12oth r s e ime s for th te ts o th Y-c p citors

Th smale t, a me ium (in th c s of more th n four c s siz s) a d th lar ge t c s siz s al b te te Of e c

c s siz , thr ee s e ime s of th ma imum c p cita c a d thre s e ime s of th minimum c p cita c s al b

te te , re ultin in six s e ime s p r c s siz

i

Ate tio is drawn to th o tio of c ryin o t a c mbin dv lta e/c re t te t a pre crib d in 4.14.6

Table 5 – Te t s he ule a d s mpl ng pla f or lot by-lot te ts

Safety te ts o ly

to Cla s 4 of this stan ard

Inspe tio level

A1 4.1 Vis al e amin tio

Dime sio s

c

Te ts in Gro p A0 a d Gro p A2 c n b ma ein a y pra tic l ord r, e c pt for c ramic c p citors th c p cita c

This te t ma b re la e b in-pro u tio te tin if th ma ufa turer in tals S C o dime sio al

me s reme ts or oth r me h nisms to a oid p rts e c e in lmits

d

Th v lta e pro f te t s al b c mbin d with a s ita le mo itorin meth d to d te t d fe ts in in ulatio

re ista c

Qu lfic tio ap ro al – As e sment level DZ

to Cla s 4 of this stan ard

Inspe tio level

4.2.1 Volta e pro f (Te t A)

4.2.5 In ulatio re ista c (Te t A)

Table 6 – Te t s h dule for s f ety te ts only (1 of2)

Performanc requirements

Within s e ifie tolera c

Within s e ifie tolera c

Performanc requirements

Wh n, for a c ramic c p citor, a pre is me s reme t of c p cita c drift is re uire , pre o ditio in a c rdin

to An e G s o ldb p rorme a a vis d b th ma ufa turer

Table 7 – Te t s he ule f or s fety a d perf orma c te ts qual f ic tion approv l –

4.12 Damp h at, ste d state

4.12.1 Initial me s reme ts Gro p 0 me s reme ts to b u e

4.12.2 Te t c n itio s Ceramic c p citors: h lf of th

s e ific tio ; s e d tai

s e ific tio for me s rin

Wh n, for a c ramic c p citor, a pre is me s reme t of c p cita c drift is re uire , pre o ditio in a c rdin

to An e G s o ldb p rorme a a vis d b th ma ufa turer

3.5 Qual ty conf orma c inspe tion

Bef ore s bmis ion to the q al ty conf orman e in p ction, an a pro riate 10 % voltage pro f

test b twe n termination ac ordin to Ta le 10 s al b made

The detai s of this test s al b the prerogative of the man f acturer, but the time s al b not

les than 1 s

If the test is p rformed in a time p riod b twe n 1 s an 2 s the voltage of Ta le 10 s al b

in re sed to values a ove c rve B of Fig re 6

If a d.c test voltage is u ed in te d of a.c for Y-ca acitors, it s al b not les than 1,5 times

the a.c test voltage in Ta le 10 an f urther in re sed to values a ove c rve B of Fig re 6

Al non onf ormin items s al b removed f rom the lot prior to lot-by-lot testin

3.5.1 Formation of in pe tion lots

3.5.1.1 Groups A a d B inspe tion

These tests s al b car ied out on a lot-by-lot b sis ac ordin to Ta le 8

A man facturer may ag regate the c r ent prod ction into in p ction lots s bject to the

f ol owin saf eg ard :

a) the in p ction lot s al con ist of stru tural y simi ar ca acitors (se 3.2);

b) the sample tested s al b re resentative of the values an dimen ion contained in the

in p ction lot:

1) in relation to their n mb r;

2) with a minimum of f i e of an one value;

c) if there are les than f i e of an one value in the sample the b sis f or the drawin of

samples s al b agre d b twe n the man f acturer an the Certif i ation Bod ;

For Group A tests, the in p ction lot s al con ist of comp nents of the same rated voltage,

clas an s bclas an s al b taken f rom one contin ou prod ction ru

No non onformin items are p rmited f or Clas Y-ca acitors in the voltage pro f test

For Group B tests, the in p ction lot s al con ist of comp nents prod ced with simi ar

proces es an materials, as related to the test con erned

3.5.1.2 Group C inspe tion

3.5.1.2.1 Safety te ts only approv l

Re-q al f i ation tests ac ordin to Ta le 6 may b req ired by the certif i ation b d when a

c an e of the declared desig as given in An ex D is inten ed

The certifi ation b d s al b informed a out the inten ed c an e(s) an decide whether

re-q al f i ation tests have to b p rformed

3.5.1.2.2 Qual f ic tion approv l

These tests s al b car ied out on a p riodic b sis

The samples to b s bmited to the p riodic test in Ta le 8 s al b re resentative of the

c r ent prod ction of the sp cif ied p riod an s al b taken from the same rated voltage,

clas an s bclas In s bseq ent p riod , other case sizes in prod ction s al b tested with

the aim of coverin the whole ran e of the a proval

No non onformin items are p rmit ed f or Clas Y ca acitors in the voltage pro f test

The s hed le f or the lot-by-lot an periodic tests f or q al ty conf orman e in p ction is given

in Ta le 4 of Clau e 2 of the blan detai sp cif i ation, f or example, IEC 6 3 4-14-3

3.5.3 Dela e d l v ry

Re-in p ction in the case of delayed delvery s al b car ied out at intervals not ex e din

thre ye rs When ac ordin to the proced res of IEC 6 3 4-1:2 0 , Clau e Q.10,

re-in p ction has to b made, voltage pro f at the f ul relevant test voltage, ca acitan e,

resistan e (if a pl ca le) an in ulation resistan e s al b c ec ed as sp cif ied in Group A

in p ction an soldera i ty s al b c ec ed ac ordin to Group B in p ction

3.5.4 As e sme t le el

The as es ment level DZ wi b u ed Se Ta le 8

If o e n n o f ormin item is o tain d, al th te ts of th gro p s al b re e te o a n w s mple a d th n

n furth r n n o formin items are p rmite

b

Th c nte t of th in p ctio s b ro p is d s rib d inCla s 2 of th rele a t bla k d tai s e ific tio

c

Th vibratio , b mp a d s o k te ts in this s b ro p are re uire to b c rie o t e ery 12 mo th o ly

This clau e s p lements the inf ormation given in IEC 6 3 4-1:2 0 , Clau e 4

AC tests car ied out at a f req en y b twe n 5 Hz an 10 Hz are con idered val d f or an

nominal freq en y b twe n 5 Hz an 10 Hz In case of doubt, 5 Hz s al b the ref eren e

f req en y for me s rements

4.1 Vis al e amination a d c e k of dime sions

Se IEC 6 3 4-1:2 0 , 4.4 with the fol owin ad itional detai s

4.1.1 Cre pa e dista c s a d cle ra c s

Cre p ge distan es an cle ran es on the outside of the ca acitor b twe n l ve p rts of

dif ferent p larity or b twe n l ve p rts an a metal case s al b not les than the a pro riate

values given in Ta le 9

Ta le 9 is b sed on IEC 6 6 4-1, but eq ipment safety stan ard IEC 6 3 5-1, IEC 6 0 5

an IEC 6 9 0-1 have b en con idered, also Further information may b o tained from

IEC 6 6 4-1

Ta le 9 is generated u in fol owin en ironmental con ition as main g idel ne:

Pol ution degre 2, altitu e ≤ 0 0 m an CTI (Comp rative Trac in In ex) of materials

≥10

The cre p ge distan es smal er than those in the Ta le 9 can b u ed, if rules given in

IEC 6 6 4-1 f or CTI of materials in comp nents al ow that Cre p ge distan e s al alway

b larger or eq al to cle ran e distan e from this ta le Eq ipment stan ard may req ire

larger distan es than ones given here

IEC 6 6 4-1 f or me s rements on the outside of the ca acitor Ad itional req irements may

b neces ary, f or example f or ca acitors inten ed to b u ed in other en ironments than

p l ution degre 2 (e.g drip-pro f an splas -pro f ca acitors) or for the u e of ca acitors in

NOT Th reinforc d in ulatio f i ure for v lta e > 0 V are giv n for informatio o ly In this sta d rd Y1

c p citors are lmite to 5 0 V

a

Th s lmits s al b u e for me s reme ts b twe n termin ls of a X-c p citor

b

Th s lmits s al b u e for me s reme ts b twe n e c termin l a d th metal c s of a X-c p citor a d for

me s reme ts b twe n termin ls or b twe n e c termin l a d th metal c s of a Y2- or Y4-c p citor

if the ca acitor u der test, or a section of it, is a metal zed f ilm or

metal zed p p r ca acitor

The prod ct of R

1

1+ C

X) s al b les than, or eq al to, 1 s an gre ter than 0,01 s

When for q al fi ation a proval an p riodic tests a 5 /6 Hz voltage is a pled, the voltage

s al b s p l ed from a tran f ormer f ed from a varia le auto-tran f ormer, an the voltage

s al b raised f rom ne r zero to the test voltage at a rate not ex e din 15 V/s The test

time s al b cou ted f rom the time the test voltage is re c ed At the en of the test time the

test voltage s al b red ced to ne r zero an the ca acitor dis harged throu h a s ita le

resistor

For lot-by-lot an 10 % testin , the voltage s al b a pl ed directly at the ful test voltage,

but care s ould b taken to avoid overvoltage p ak

a) the test ac ordin to 2c of Ta le 3 of IEC 6 3 4-1:2 0 s al not b car ied out;

b) f or en a s lated u its with a non-metal c case, a voltage pro f test s c as Test C s al

b car ied out only for q al f i ation a proval tests an p riodic tests;

c) the method of a plyin the test voltage f or Test C s al b given in the detai sp cifi ation

F r q al f i ation testin , the foi method given in IEC 6 3 4-1:2 0 , 4.6.2.3.2 s al b

u ed, u les otherwise sp cif ied in the detai sp cif i ation;

NOT This te t is a plc ble o ly to in ulate c p citors in n n-metal c c s or in in ulate metal c c s Se

IEC 6 3 4- :2 0 , 4.6.2.3

d) f or testin d rin a p riod b twe n 1 s an 2 s, the voltage of Ta le 10 s al b in re sed

as in icated in Fig re 6

Atention is drawn to the f act that re etition of the voltage pro f test by the u er may damage

the ca acitor If re etition of the voltage pro f test is made by the u er, the a pl ed voltage

s ould not b gre ter than 6 % of the test voltage sp cif ied in Ta le 10

Table 10 – Volta e proof

Cla s Ran e of rated

2 U

R+ 1 5 0 V (a.c.) with

minimum of 5 0 V (a.c.)

b

2 U

R+ 1 5 0 V (a.c.) with

For Delta a d T-c n e te c p citor u its a c rdin to Fig re 5 a d 5 , th te t v lta e

for termin ls toc s s al b th a pro riate te t v lta e for th Y-c p citors

b

For lot-b -lot te ts of Cla s Y2- a d Y4-c p citors, th a.c te t v lta e ma b re la e b

a d.c v lta e of 1,5 time th pre crib d a.c.v lta e

There s al b no p rmanent bre k own or f las over d rin the test p riod

NOT Th o c re c of s lfh aln bre k own d rin th a plc tio of th te t v lta e o metalz d fim

c p citors is alowe

4.2.2 Capa ita c

Se IEC 6 3 4-1:2 0 , 4.7 with the fol owin detai s

4.2.2.1 Me s ring conditions

The ca acitan e me s red s al b the series equivalent ca acitan e

The me s rin f req en y s al b 1 kHz, but, only f or ceramic ca acitors with C

The me s rin temp rature s al b in ac ordan e with IEC 6 3 4-1:2 0 , 4.2.1

The me s rin voltage s al not ex e d the rated voltage For ceramic ca acitors the

me s rin voltage s al b 1,0 V ± 0,2 V

As the nominal ca acitan e of ceramic ca acitors, as me s red a ove, is the smal -sig al

ca acitan e, the man facturer s al s p ly the f olowin inf ormation f or ceramic ca acitors:

a) the maximum exp cted 5 /6 Hz c r ent throu h the ca acitor at rated voltage takin into

ac ou t ca acitan e toleran e an temp rature c aracteristic (or co f f icient of

ca acitan e;

b) the minimum exp cted ca acitan e takin into ac ou t ca acitan e toleran e an

temp rature c aracteristic (or co f f icient of ca acitan e

4.2.4 Re ista c (Equiv le t Serie Re ista c (ESR) (f or RC units only)

The ESR s al b me s red in a series eq ivalent circ it at the f ol owin f req en y:

In lot-by-lot q alty conforman e testin the me s rin may b inter upted at the time that the

value of the in ulation resistan e ex e d the l mits of Ta les 1 or 12, whic can b s orter

than 6 s

4.2.5.1 Temperature cor e tion

When pres rib d in the detai sp cif i ation the temp rature at whic the me s rement is

made s al b noted If this temp rature dif fers from 2 °C, a cor ection s al b made to the

me s red value by multiplyin it by the a pro riate cor ection factor pres rib d in the

sectional sp cif i ation f or the relevant dielectric, or given in the detai sp cif i ation

4.2.5.2 Re uireme ts

The in ulation resistan e s al ex e d the values of Ta les 1 or 12 as a pro riate

Table 1 – Ins lation re ista c – Saf ety te ts only

a

For c p citors with e terimpre n te p p r diele tric, th v lu s of th

ta les al b re la e re p ctiv ly b th v lu s 5 0, 1 5 0 a d 2 0 0