Iec 60335 2 17 2015

Household and simi ar elect rical appl ances – Safety – Part 2- 17: Part icular requirement s for blank et s, pads, clot hing and simi ar flexible heat ing appl ances Apparei s élect rod

Household and simi ar elect rical appl ances – Safety –

Part 2- 17: Part icular requirement s for blank et s, pads, clot hing and simi ar

flexible heat ing appl ances

Apparei s élect rodomest iques et analogues – Sécurité –

Part ie 2- 17: Exigences part icul ères pour les couvert ures, coussins, vêt ement s

et apparei s chaufant s souples analogues

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Copyr ight © 2 15 IEC, Ge e a, Switzer la d

Al rig ts r es r ve Unle s oth rwis s e ifi d, n p rt of this p blc tio ma b r epr od c d or uti z d in a y form

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c p r i ht or h v a e q ir y a o t o tainin a ditio al ri hts to this p blc tio , ple s c nta t th a dr es b low or

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Th te h ic l c nte t of IEC p blc tio s is k pt u d r c n ta t r eview b th IEC Ple s ma e s re th t y u h v th

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Th st an -alo e a plc t io for c n ultin th e tire

biblo ra hic l informat io o IEC Intern tio al Sta d rd ,

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a d with rawn p blc tio s

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If y ou wis to giv e u your fe d a k o t his p blc tio or

n e furt her a sista c , ple s c nta t t he Cu tomer Serv ic

Ce t re:c c@ie c

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Household and simi ar elect rical appl ances – Safety –

Part 2- 17: Part icular requirement s for blanket s, pads, clot hing and simi ar

flex ible heat ing appl ances

Apparei s élect rodomest iques et analogues – Sécurité –

Part ie 2- 17: Exigences part icul ères pour les couvert ures, cous ins, vêt ement s

et apparei s chaufant s souples analogues

W arnin ! Mak e s re that you o tain d this publc tion from a a t horize distributor

At te tion! V eui ez vou a s rer q e vou a ez o te u c t te publc t ion via u distribute r a ré

c olour

inside

IEC 60335- 2- 1 7

Editio 3.1 2 15-0

Household and simi ar elect rical appl ances – Safety –

Part 2- 17: Part icular requirement s for blank et s, pads, clot hing and simi ar

flexible heat ing appl ances

Apparei s élect rodomest iques et analogues – Sécurité –

Part ie 2- 17: Exigences part icul ères pour les couvert ures, coussins, vêt ement s

et apparei s chaufant s souples analogues

CONTENTS

FOREWORD 4

INTRODUCTION 7

1 Sco e 8

2 Normative referen es 9

3 Terms an def i ition 9

4 General req irement 1

5 General con ition for the tests 1

6 Clas ification 13 7 Markin an in tru tion 13 8 Protection again t ac es to l ve p rts 16 9 Startin of motor o erated a pl an es 16 10 Power input an c r ent 16 1 He tin 17 12 Void 19 13 L akage c r ent an electric stren th at o eratin temp rature 19 14 Tran ient overvoltages 2

15 Moisture resistan e 2

16 L akage c r ent an electric stren th 21

17 Overlo d protection of tran formers an as ociated circ its 2

18 En uran e 2

19 Abnormal o eration 2

2 Sta i ty an mec anical hazard 2

21 Mec anical stren th 2

2 Con tru tion 3

2 Internal wirin 3

2 Comp nents 3

2 Sup ly con ection an external f lexible cord 3

2 Terminals f or external con u tors 3

2 Provision f or e rthin 3

2 Screws an con ection 3

2 Cle ran es, cre p ge distan es an sold in ulation 3

3 Resistan e to he t an fire 3

31 Resistan e to ru tin 41

3 Radiation, toxicity an simiar hazard 41

An exes 5

An ex A (informative) Routine tests 5

An ex AA (normative) Sp cification for the thermal in ulation 5

An ex BB (normative) Eq ipment for the mec anical stren th test for blan ets 5

An ex CC (normative) Clothin 6

Bibl ogra h 6

Fig re 101 – Symb l f or "Do not u e folded or ru ked" 4

Fig re 10 – Symb l for "Do not in ert pin " 4

Fig re 10 – Ar an ement f or me s rin le kage c r ent an electric stren th of the f lexible p rt 4

Fig re 10 – Void 4

Fig re 10 – Void 4

Fig re 10 – Void 4

Fig re 10 – Tumbl n b r el f or testin the mec anical stren th of p d 4

Fig re 10 – Imp ct a p ratu f or testin en los res of moisture-pro f a pl an es 4

Fig re 10 – Sha e of the sample f or the te r resistan e test 4

Fig re 1 0 – Eq ipment for flexin he tin elements an internal wirin 4

Fig re 1 1 – Void 5

Fig re 1 2 – Eq ipment for the sp rk ig ition test 51

Fig re 1 3 – Eq ipment for the sp rk ig ition test – Detais of the mas 5

Fig re 1 4 – Sha e of the test piece f or the ten i e test 5

Fig re BB.1 – Eq ipment f or the mec anical stren th test of blan ets 5

Fig re BB.2 – Detai of the drum an c l n ers 5

Fig re BB.3 – Detai of the clampin b r 5

Ta le 101 – Maximum temp ratures 18 Ta le 102 – Maximum temp rature rises 18 Ta le A.101 – Test voltages 5

INTERNATIONAL ELECTROTECHNICAL COMMISSION

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

al n tio al ele trote h ic l c mmite s (IEC Natio al Commite s) Th o je t of IEC is to promote

intern tio al c -o eratio o al q e tio s c n ernin sta d rdiz tio in th ele tric l a d ele tro ic field To

this e d a d in a ditio to oth r a tivitie , IEC p bls e Intern tio al Sta d rd , Te h ic l Sp cific tio s,

Te h ic l Re orts, Pu lcly Av ia le Sp cif i atio s (P S) a d Guid s (h re fter ref ere to a “IEC

Pu lc tio (s)”) Th ir pre aratio is e tru te to te h ic l c mmite s; a y IEC Natio al Commite intere te

in th s bje t d alt with ma p rticip te in this pre aratory work Intern tio al g v rnme tal a d n n

-g v rnme tal org niz tio s laisin with th IEC als p rticip te in this pre aratio IEC c la orate clo ely

with th Intern tio al Org niz tio f or Sta d rdiz tio (ISO) in a c rd n e with c n itio s d termin d b

a re me t b twe n th two org niz tio s

2) Th formal d cisio s or a re me ts of IEC o te h ic l maters e pre s, a n arly a p s ible, a intern tio al

c n e s s of o inio o th rele a t s bje ts sin e e c te h ic l c mmite h s re re e tatio fom al

intere te IEC Natio al Commite s

3) IEC Pu lc tio s h v th form of re omme d tio s f or intern tio al u e a d are a c pte b IEC Natio al

Commite s in th t s n e Whie al re s n ble eff orts are ma e to e s re th t th te h ic l c nte t of IEC

Pu lc tio s is a c rate, IEC c n ot b h ld re p n ible f or th wa in whic th y are u e or f or a y

misinterpretatio b a y e d u er

4) In ord r to promote intern tio al u if ormity, IEC Natio al Commite s u d rta e to a ply IEC Pu lc tio s

tra s are tly to th ma imum e te t p s ible in th ir n tio al a d re io al p blc tio s An div rg n e

b twe n a y IEC Pu lc tio a d th c re p n in n tio al or re io al p blc tio s al b cle rly in ic te in

th later

5) IEC its lf d e n t pro id a y ate tatio of c nformity In e e d nt c rtific tio b die pro id c nf ormity

a s s me t s rvic s a d, in s me are s, a c s to IEC mark of c nformity IEC is n t re p n ible for a y

s rvic s c rie o t b in e e d nt c rtif i atio b die

6) Al u ers s o ld e s re th t th y h v th late t e itio of this p blc tio

7) No la i ty s al ata h to IEC or its dire tors, emplo e s, s rv nts or a e ts in lu in in ivid al e p rts a d

memb rs of its te h ic l c mmite s a d IEC Natio al Commite s f or a y p rs n l injury, pro erty d ma e or

oth r d ma e of a y n ture wh ts e er, wh th r dire t or in ire t, or f or c sts (in lu in le al fe s) a d

e p n e arisin o t of th p blc tio , u e of, or rela c u o , this IEC Pu lc tio or a y oth r IEC

Pu lc tio s

8) Ate tio is drawn to th Normativ refere c s cite in this p blc tio Us of th refere c d p blc tio s is

in is e s blefor th c re t a plc tio of this p blc tio

9) Ate tio is drawn to th p s ibi ty th t s me of th eleme ts of this IEC Pu lc tio ma b th s bje t of

p te t rig ts IEC s al n t b h ld re p n ible f or id ntif yin a y or al s c p te t rig ts

DISCLAIMER

This Con ol d te version 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 con idere the of f icial doc me ts

This Con ol d te version of IEC 6 3 5-2-17 be rs the e ition number 3.1 It consists of

the third e ition (2 12-0 ) [doc me ts 61/4 3 /FDIS a d 61/4 5 /RVD] a d its

ame dment 1 (2 15-0 ) [doc me ts 61/4 3 /CDV a d 61/4 10/RVC] The te h ic l

conte t is ide tic l to th ba e e ition a d its ame dme t

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

is modifie by ame dme t 1 Ad itions a d deletions are displa e in re , with

deletions being struc through A s parate Fin l v rsion with al c a ge a c pte is

This p rt of International Stan ard IEC 6 3 5 has b en pre ared by IEC tec nical commite 61:

Safety of hou ehold an simiar electrical a plan es

The prin ip l c an es in this edition as comp red with the secon edition are as f ol ows

(minor c an es are not l sted):

– The definition of PTC he tin element has b en deleted an the definition in Part 1 now

a ples A definition of a he tin element with PTC c aracteristic has b en introd ced

in te d (3.1 7) This has res lted in editorial c anges to 5.7, 5.8.2, 7.1, 10.101, 1 2,

21.10 , 21.1 1.1 an 21.1 2

– The al owan e for clas I a pl an es has b en deleted an req irements for a pl an es

in orp ratin a f un tional e rth have b en in orp rated (6.1, 7.1, 2 1 5)

– The workin voltage of p rts of clas I I con tru tion is lmited to 2 V (2 2 )

– Some notes have b en deleted or con erted to normative text (3.10 , 3.1 1, 3.1 3, 5.2,

– Clarification of the he t stroke test (1 101)

– The fig re n mb rs have b en updated to take into ac ou t deletion of Fig re 10 in the

previou edition

This publ cation has b en drafted in ac ordan e with the ISO/IEC Directives, Part 2

This p rt 2 is to b u ed in conju ction with the latest edition of IEC 6 3 5-1 an its

amen ments It was esta ls ed on the b sis of the fif th edition (2 10) of that stan ard

NOT 1 Wh n “Part 1” is me tio e in this sta d rd, it ref ers to IEC 6 3 5-

This p rt 2 s p lements or modifies the cor esp n in clau es in IEC 6 3 5-1, so as to

con ert that publ cation into the IEC stan ard: Saf ety req irements f or blan ets, p d ,

clothin an simi ar flexible he tin a plan es

When a p rtic lar s bclau e of Part 1 is not mentioned in this p rt 2, that s bclau e ap l es

as far as is re sona le When this stan ard states “ad ition”, “modif i ation” or “re lacement ,

the relevant text in Part 1 is to b ada ted ac ordin ly

NOT 2 Th f olowin n mb rin s stem is u e :

– s b la s s, ta le a d fig re th t are n mb re startin fom 101 are a ditio al to th s in Part 1;

– u le s n te are in a n w s b la s or in olv n te in Part 1, th y are n mb re startin fom 101, in lu in

th s in a re la e cla s or s b la s ;

– a ditio al a n x s are letere A , B , etc

NOT 3 Th f olowin print ty e are u e :

– req irements: in roman typ ;

– test sp cific t ions: in it al ic typ ;

– n te : in smal roma ty e

Word in b ld in th te t are d fin d in Cla s 3 Wh n a d finitio c n ern a a je tiv , th a je tiv a d th

a s ciate n u are als inb ld

A l st of al p rts of the IEC 6 3 5 series, u der the general title: H ouse old a d simil ar

ele tric l a pl ian es – Safety, can b f ou d on the IEC we site

The commite has decided that the contents of the b se publ cation an its amen ment wi

remain u c an ed unti the sta i ty date in icated on the IEC we site u der

"ht p:/ we store.iec.c " in the data related to the sp cif i publcation At this date, the

NOT 4 Th ate tio of Natio al Commite s is drawn to th f act th t e uipme t ma ufa turers a d te tin

org niz tio s ma n e a tra sitio al p rio folowin p blc tio of a n w, ame d d or re is d IEC p blc tio in

whic to ma e pro u ts in a c rd n e with th n w re uireme ts a d to e uip th ms lv s for c n u tin n w or

re is d te ts

It is th re omme d tio of th c mmite th t th c nte t of this p blc tio b a o te for impleme tatio

n tio aly n t e rler th n 12 mo th or later th n 3 mo th fom th d te of p blc tio

The f ol owin dif feren es exist in the cou tries in icated b low

– 6.1: Clas 0 prod cts are al owed (Ja an an USA)

– An ex AA: Felt is u ed f or the thermal in ulation (USA)

IMPORTANT – Th 'colour in ide' logo on the cover pa e of this publ c tion indic te

that it contain colours whic are consid re to be us f ul f or th cor e t

und rsta din of its conte ts Us rs s ould theref ore print this doc me t usin a

colour printer

It has b en as umed in the draf tin of this International Stan ard that the exec tion of its

provision is entru ted to a pro riately q al f ied an exp rien ed p rson

This stan ard recog izes the international y ac e ted level of protection again t hazard s c

as electrical, mec anical, thermal, f ire an radiation of a pl an es when o erated as in

normal u e takin into ac ou t the man f acturer's in tru tion It also covers a normal

situation that can b exp cted in practice an takes into ac ou t the way in whic

electromag etic phenomena can aff ect the safe o eration of a pl an es

This stan ard takes into ac ou t the req irements of IEC 6 3 4 as far as p s ible so that

there is comp tibi ty with the wirin rules when the a pl an e is con ected to the s p ly

main However, national wirin rules may dif fer

If an a pl an e within the s o e of this stan ard also in orp rates f un tion that are covered

by another p rt 2 of IEC 6 3 5, the relevant p rt 2 is a pl ed to e c f un tion se arately, as

f ar as is re sona le If a plca le, the influen e of one fu ction on the other is taken into

ac ou t

When a p rt 2 stan ard do s not in lu e ad itional req irements to cover hazard de lt with

in Part 1, Part 1 a pl es

NOT 1 This me n th t th te h ic l c mmite s re p n ible f or th p rt 2 sta d rd h v d termin d th t it is

n t n c s ary to s e if y p rtic lar re uireme ts f or th a pla c in q e tio o er a d a o e th g n ral

re uireme ts

This stan ard is a prod ct f ami y stan ard de l n with the saf ety of a pl an es an takes

preceden e over horizontal an generic stan ard coverin the same s bject

NOT 2 Horiz ntal a d g n ric sta d rd c v rin a h z rd are n t a plc ble, sin e th y h v b e ta e into

c n id ratio wh n d v lo in th g n ral a d p rtic lar re uireme ts for th IEC 6 3 5 s rie of sta d rd For

e ample, in th c s of temp rature re uireme ts f or s ra e o ma y a pla c s, g n ric sta d rd , s c a

ISO 13 3 - for h t s ra e , are n t a plc ble in a ditio to Part 1 or p rt 2 sta d rd

An a pl an e that compl es with the text of this stan ard wi not neces ari y b con idered to

comply with the saf ety prin iples of the stan ard if, when examined an tested, it is fou d to

have other f eatures that imp ir the level of safety covered by these req irements

An a pl an e employin materials or havin forms of con tru tion diff erin f om those detai ed

in the req irements of this stan ard may b examined an tested ac ordin to the intent of

the req irements an , if fou d to b s bstantial y eq ivalent, may b con idered to comply

with the stan ard

This International Stan ard de ls with the safety of electric bla k ts, pa s, clothin an

other f lexible a pl an es that he t the b d or h man b d , for hou ehold an simi ar

purp ses, their rate volta e b in not more than 2 0 V

This stan ard also a pl es to control units s p l ed with the a pl an e

Ap l an es not inten ed for normal hou ehold u e but whic nevertheles may b a source of

dan er to the publ c, s c as a pl an es inten ed to b u ed in b auty p rlours or by p rson

in cold ambient temp ratures, are within the s op of this stan ard

Req irements an tests f or clothin are given in An ex CC

As f ar as is practica le, this stan ard de ls with the common hazard presented by

a pl an es that are en ou tered by al p rson in an arou d the home However, in general,

it do s not take into ac ou t

– p rson (in lu in c i dren) whose

• ph sical, sen ory or mental ca a i ties; or

• lac of exp rien e an k owled e prevents them f om u in the a pl an e safely

without s p rvision or in tru tion;

– c i dren playin with the a pl an e

NOT 101 Chidre are c n id re to b old e o g to u e a a pla c with ut s p rvisio wh n th y h v

b e a e u tely in tru te b a p re t or g ardia a d are d eme c mp te t to u e th a pla c s fely

NOT 10 Ate tio is drawn to th f act th t

– for a pla c s inte d d to b u e in v hicle or o b ard s ip or aircraft, a ditio al re uireme ts ma b

n c s ary;

– in ma y c u trie , a ditio al re uireme ts are s e if i d b th n tio al h alth a th ritie , th n tio al

a th ritie re p n ible for th prote tio of la o r a dsimiar a th ritie

NOT 10 This sta d rd d e n t a ply to

– a pla c s inte d d to b u e in lo atio s wh re s e ial c n itio s pre ai s c a th pre e c of a

c ro iv or e plo iv atmo p ere (d st, v p ur or g s);

– rigid b d warmers, s c a th s of metal or c ramic material

– water b d h aters (IEC 6 3 5-2-6 );

– h atin a pla c s for bre din a d re rin a imals (IEC 6 3 5-2-71 ;

– f oot warmers a d h atin mats (IEC 6 3 5-2-81 ;

– a pla c s s e if i aly inte d dfor u e u d r me ic l s p rvisio (IEC 6 6 1 2-3 )

ISO 3 5 :2 0 , Tex til es – Care l ab ll ing c d e using symb ls

ISO 7 0 :2 14, Gra hic l symb ls for use o e uipme t – Re istered symb ls

ISO/IEC Guide 3 , Instru tions for use of products of c nsumer int erest

3 Terms a d def initions

This clau e of Part 1 is a pl ca le ex e t as f ol ows

3.1.9 Re l ac me t:

normal o eration

o eration of the a plan e u der the f ol owin con ition :

– bla k ts an pa s are placed b twe n s e ts of thermal in ulation;

– du ets are placed on a s e t of thermal in ulation but not covered;

– mat re s s are covered by a s e t of thermal in ulation

NOT 101 Th s e ific tio for th th rmal in ulatio is giv n in An e A

The fle ible part is s p orted on a plywo d b se 2 mm thic an p sitioned not les than

3 0 mm a ove the flo r The size of the plywo d b se is s c that the thermal in ulation can

b f ul y s p orted over its entire are The size of the s e ts of thermal in ulation is s c that

the ed es exten at le st 10 mm b yon the outl ne of the he te are

Control units held in the han when they are actuated an cord switc es are p sitioned to

han away f rom the plywo d b se Other control units are placed on a s p ortin s r ace

away f rom the plywo d b se

3.101

f le ible part

al layers of material formin the p rmanent en los re of the a plan e together with the

he ting eleme t, ele tro-conductiv te ti e, thermostats an al other c r ent-car yin

p rts contained within it

Note 1 to e try: Th f lexible part ma b in id a deta hable co er

_ _ _ _ _ _

q i ted ov rbla k t inten ed to b u ed without ad itional b d in over the oc up nt of the

b d, the he ting eleme t, ele tro-conductiv te ti e, providin s p lementary he t

control e appl a c

a pl an e in orporatin me n in the fle ible part, s c as h ating eleme ts with PTC

c ara teristic or other me n , for sen in c an es in temp rature when the a plan e is

o erated u der normal operation, th s automatical y control n the average p wer input

3.1 0

he ting eleme t

he tin con u tor, in lu in the core on whic it is wou d an the in ulation an core an

in ulation, together with any other integrated con u tor

3.1 1

he te are

are of the f le ible part en losed within the outer p rimeter of the h ating eleme t or

ele tro-cond ctiv te ti e

It in lu es a margin outside the p rimeter that has a width eq al to 0,5 times the average

distan e b twe n adjacent ru s of the he tin eleme t

The h ate are in lu es the return len th of the he ting eleme t if the average distan e

b twe n this p rt an the adjacent he ting eleme t do s not ex e d the average distan e

b twe n adjacent ru s of the he ting eleme t

If a bla k t or mat re s has two se arate h ate are s, the s r ace b twe n the two are s

is con idered to b p rt of the he te are s, if at an place the distan e b twe n the two

he ting eleme ts do s not ex e d 1,5 times the average distan e b twe n adjacent ru s of

the h atin eleme t

3.1 2

moisture-proof appl a c

a pl an e havin a f le ible part that is s ita le for u e u der moist con ition

device, other than a multi-p sition cord switc , that do s not in orp rate comp nents f or

reg latin the p wer input, external to the fle ible part, by me n of whic the average

p wer input of the a pl an e can b adju ted or reg lated

Note 1 to e try: Co trol u its ma b in orp rate in th su ply cord or at th e d of a interco ne tio cord

texti e material in orp ratin carb n or other con u tive material s bstan e, together with an

as ociated in ulation, whic is con ected to a p ir of electrodes for the purp se of providin a

u if ormly he ted s rf ace

3.1 7

he ting eleme t with PTC c ara teristic

he ting eleme t con istin of a p ir of con u tors se arated by con u tive material that has

a ra id non-l ne r in re se in resistan e when the temp rature is raised throu h a p rtic lar

5.2 Mod ific tio :

Th tests are c r ied o t o t wo a p a c s, id ent ified as a p a c A a d a plian e B

I f a further a p a c is re uired in ord er to c ntinu testin after a test ofCl ause 19, it sh l l

b ad eq at ely pre o d it ion d tak ing int o a c u t 21.10 to 21.107

For a plian es h ving a bonded enclosure, add ition l a p a c s are re uired for t he tests

of 21.10 a d 21.1 1 For ot her a pl ian es, a l en t h of15 m of he ting element is re uired

for t he tests of 21.1 1

For moisture-proof pads su je ted to the tests of 21.1 0, fiv add it io al a pl ian es and

1 m

2

of e closure material are re uired

If h atshrink material is used t o insulate c n e tions in t he flexible part , a sample at l east

150 mm in l en th is re uired for the test of3 10

An ad d ition l a plian e ma b re uired for t he test of19.1 2

Add ition l sampl es ofpads ma b re uired for t he test of 3 101

working v ltage a o e 2 V, a add itio al sample ma b re uired for the test of 21.1 3.2

a d a 1 m len t h of sh et insulat ion wil l b re uired for the test of 21.1 3.1

5.3 Re l ac me t:

Th order in whic th tests are c r ied o t is as foll ows:

Ap l ian e A: 7 , 2 1 , 8, 2 1 2, 10, 21.10 to 21.107, 2 10 , 13, 15, 16, 17, 2 , 25.15,

25.16, 19 (exce t 19.1 1), 21.10 , 2 18, 3 , 31 a d 3 Th tests of Cl auses 13, 15 a d 16

are n t c r ied o t o clas III applianc s h vin a rated v ltage n t ex ce d ing 2 V or o

Ap l ian e B: 10, 1 , 19.1 1, 21 (emaind er), 2 (emainder), 2 , 2 , 25 ( emaind er), 2 , 27,

2 , 2 a d 14

Th flexible part of wash bl e a p a c s is l au dered t wic in a c rd an e with the

instru t ions b fore t esting is st arted

If it is evide t fom th c nstru tion of t he a plian e that a p rt ic l ar test is n t a pli ca le, t he

test is n t c ried o t

5.5 Add itio :

If the flexible part of t he a plian e is provid ed wit h a deta hable cover, the tests are c ried

o t with or witho t t his c v r, whic ever is more u fa o ra l e H owe er, du ets are t est ed

witho t a deta hable cover

I f t he c nstru t ion of a matre s inc rp rates a se arate flexible part that is d et ac a l e, the

deta hable flexible part is t est ed as a u derblan et

I f t he he tin element c n mo e in the c a n ls, it is ma ip l at ed so that th ind ivid ual ru s

are plac d in th most u favoura le p sitio

5.6 Add itio :

Wh n testing a pl ian es for d.c o ly, the p s ibl e influ n e of p l arity o t he o erat ion of the

5.7 Mod ific t io :

For flexible parts inc rp rating he ting elements with PTC chara teristic , t he tests of

Cl auses 10, 1 a d 19 are c ried o t at the most u favoura le ambient temp rature wit hin

th ra g of0 °C to 25 °C

For oth r co trolled blankets a d mat re s s, the tests of Cl auses 10, 1 a d 19 are

c r ied o t at the most u favoura le ambie t temp rature wi t hin the ra g of 0 °C to 15 °C

5.8.1 Ad dition:

Ap lian es for d.c o ly are tested with d c

5.8.101 Controlled applanc s are su plied as sp cified for motor-operated applianc s

6.1 Mod ific tio :

Ap l an es s al b cla s I or cla s I Cla s I appl a c s s al have a rate volta e not

7 Marking a d instructions

This clau e of Part 1 is a pl ca le ex e t as folows

7.1 Mod ific tio :

Ap l an es s al b marked with the rate p wer input

Parts of cla s I con truction s al not b marked with the rate volta e of the a pl an e

Add ition:

Fle ible parts an deta h ble cov rs s al b marked with the name, trademark or

identification mark of the man f acturer or resp n ible ven or

Deta hable covers s al b marked with the model or typ referen e of the a pl an e with

whic they are inten ed to b u ed

The f le ible part of a pl an es to b u ed with a deta hable control unit s al b marked

with the ref eren e of the control unit to b u ed

The f le ible part of a pl an es to b u ed with a d ta hable tra sf ormer s al b marked

Fle ible parts s al b marked with the s bstan e of the fol owin :

– s mb l ISO 7 0 -0 9 (2 0 -01), or by the text ‘re d the in tru tion ’;

– the s mb l s own in Fig re 10 , or by the text ‘do not in ert pin ’;

– the s mb l ‘Not to b u ed by very you g c idren (0-3 ye rs)’, or by simiar text;

– s mb l ISO 7 0 -31 4 (2 12-0 ) an s mb l ISO 7 0 -312 (2 12-0 );

– inten ed orientation of blan ets an mat res es ( his markin is not req ired if the

a pl an e compl es with 1 101, whic ever way it is placed on the b d)

Un erbla k ts, other than those havin a he ting eleme t with PTC c ara teristic , s al

b marked with the s mb l s own in Fig re 101 or by the text ‘do not u e folded or ru ked’

Deta hable covers s al b marked with the fol owing:

• s mb l ISO 7 0 -0 9 (2 04-01);

• s mb l of Fig re 10

The f le ible part of bla k ts an deta hable cov rs s al b marked with the a pro riate

lau derin s mb ls sp cif ied in ISO 3 5 Was a le a plan es f it ed with a non-deta hable

f lexible cord s al b marked with the “han was ” s mb l sp cified in Ta le 1 of ISO 3 5

Non-was a le a pl an es s al b marked with the “do not was ” s mb l in Ta le 1 of

The in tru tion s al contain the s bstan e of the f ol owin :

Imp rtant in tru tion Retain for f uture u e

The in tru tion s al contain the s bstan e of the markin req ired in 7.1 When the s mb ls

of Fig re 101, Fig re 10 or those in the ad ition to 7.6 are u ed, they s al b explained

The in tru tion f or bla kets s al state whether the a pl an e is an ov rbla k t or an

und rbla k t

The in tru tion for un erbla k ts, other than bla k ts havin a ru k- esistan e gre ter

than 1,2 as determined in 2 10 , s al state how the bla k t is to b sec red to the b d

The in tru tion s al sp cify the a pro riate set in s of controls f or contin ou u e of the

a pl an e

The in tru tion for pa s s al state that when the a pl an e is l kely to be u ed f or an

exten ed p riod, for in tan e by the u er f al n asle p, controls s ould b adju ted to a

set in recommen ed f or contin ou u e

The in tru tion f or a pl an es provided with deta hable control units or deta hable

tra sf ormers s al state that the a pl an e is only to b u ed with the typ s that are marked

on the a pl an e

The in tru tion for d v ts s al state the len th an width of the deta hable cov r to b

u ed

The in tru tion s al state the s bstan e of the fol owin :

– when not in u e, store as fol ows (q ote neces ary in tru tion );

– when storin the a pl an e, al ow it to co l down b fore f oldin ;

– do not cre se the a pl an e by placin items on to of it d rin storage (for bla k ts an

pa s only);

– examine the a pl an e f req ently for sig s of we r or damage If there are s c sig s, if

the a pl an e has b en mis sed or do s not work, return it to the s p l er b fore

switc in it on again;

– this a pl an e is not inten ed f or medical u e in hospitals;

– do not u e if wet ( his in tru tion is not req ired for moisture-pro f appl a c s or

Cla s I appl a c s);

– this a pl an e mu t not b u ed by p rson in en itive to he t an other very v lnera le

p rson who are u a le to re ct to overhe tin ;

– c i dren u der the age of thre are not to u e this a pl an e d e to their ina i ty to re ct

to overhe tin

The in tru tion f or underbla k ts s al state the s bstan e of the fol owin :

– the a pl an e s ould not b u ed on an adju ta le b d; or

– if the a pl an e is u ed on an adju ta le b d, c ec that the blan et an cord do not

b come tra p d or ru ked, f or example in hin es

The in tru tion s al state that the a pl an e is not to b u ed by you g c idren over the

age of three u les the controls have b en pre-set by a p rent or g ardian, or an u les the

c i d has b en adeq ately in tru ted on how to o erate the controls safely

The in tru tion f or was a le a pl an es f ited with a non-deta hable cord s al state that

the switc or control u it mu t not b al owed to get wet d rin was in an that d rin dryin

the cord mu t b p sitioned to en ure that water do s not flow into the switc or control

The in tru tion for non-was a le a pl an es s al state how they can b cle ned, for

7.14 Mod ific t ion:

I nste d of p troleum spirit, l iquid det erg nt is used to c e k the marking on flexible parts

a d deta hable covers

Add ition:

The heig t of the leterin on the fle ible part s al b at le st 2,5 mm

The heig t of the s mb ls s own in Fig re 101, Fig re 10 an the s mb l ‘not to b u ed by

very you g c i dren (0-3 ye rs)’ s al b at le st 15 mm

The heig t of the word "Imp rtant in tru tion ” an ”Retain for future u e" s al b at le st

Compl ian e is c e k d b insp ct io

8 Protection a ainst acc ss to l ve parts

The negative deviation in Ta le 1 is in re sed to 2 %

10.101 The p wer input of a plan es in orp ratin he ting eleme ts with PTC

c ara teristic s al sig ificantly decre se with an in re se in temp rature

Compl ian e is c e k d b the fo owin t es

Th a pl ian e is su p ed at rated v ltage a d o erated u der normal o eratio Th p wer

inp t sh ll h v de re sed b at l east 50 % fom the init ial v l ue wh n steady c nd it ions are

est ab sh d , a y c ntrol o erat ing during this p riod b ing sh rt -circ it ed

Underblankets h vin the le gth of their l on est sid e l es tha 1 m a d du ets, other tha

th se h ving he ting elements with PTC chara teristics, are also tested folded A singl e

fold a ros th c mplete widt h of the du et is mad e at a q arter of th l en th fom o e e d

Co trols are ad justed to t he high st sett ing intend ed for c nt inu us use

Wraps, ot her tha those h ving he tin elements with P TC chara teristic , are also tested

folded A single fold is mad e a ros the flexible part in th most u favoura le plac

1 3 Ad d ition:

Th rmo o pl es used for det ermining the temp rat ure of he ting elements, or sh aths

c ntaining t hem, are at tac ed with tex t il e thre d o er a l en th of at l east 10 mm

Th rmo o pl es used for determining th temp rature of t he sura e of electro-conductive

65 mm × 65 mm × 0,5 mm fixed b me ns of t hin ad hesiv t ap Th pl ates are c ated wit h

insul at ing la q er

Th rmo o pl es used for det erminin the t emp rat ure of the sura e of pads are at tac ed to

plates ofc p er or bras me suring 65 mm × 65 mm × 0,5 mm Th plates are p sition d to

c v r as ma y he ting element ru s as p s ible, wit h o e sid e p rall el to th d ire tion of the

ru Th t emp ratures are d etermin d at n t les th n six pl ac s, thre o e c o ter sura e

of t he flexible part

1 4 Ad d ition:

Ap l ian es h ving a flexible part of clas III co struction are su plied wit h th most

u fa o ra l e voltag b t we n 0,9 a d 1,0 times rated v ltage

1 7 Re la eme t:

Ap l ian es are o erated u til ste dy c nd itions are establsh d

1 8 Ad d it ion:

For co trolled applanc s, th t emp rat ures sh l l n t exce d t he v l ues sh wn in

Ta l e 101 If t he flexible part is c mprised of electro-conductive textile, t he valu s

sp cified for he ting elements are a p c bl e to the sura e of t he material sup lementary

insulation or reinforc d insulation, or t o the c ndu t iv sura e if there is n insulation

Table 101 – Ma imum temperature

Pa t

Temp r ture

°C

Heati ng eleme t of blan ets a d matre s s

– b fore t he s cond op rat ion of t he t hermal cont rol

– under st ead y cond it ion

Heating eleme t of pads

– b fore t he s cond op rat ion of t he t hermal cont rol

– und er st eady condit ion

Sura e of pads

1 5

9

12a

Th temp rature ma e c e 5 °C, b t n t 8 °C, for a ma imum p rio of 2 h Th p rio c mme c s wh n

th temp rature first e c e s 5 °C

For other a pl ian es, t he temp rature rises sh l l n t ex ce d the valu s sh wn in Ta l e 10

Table 10 – Ma imum temperature ris s

Th s val ue are b s d on t he normal ambient

t emp rat ure of t he a p a c a d t ake int o

con iderat ion t he ma imum a owed ambie t

t emp rat ure d uring t he t es

I f t he e ds ofthe he ting element of pads are c ntained in a plast ic sh ath attac ed t o t he

flexible part, the temp rat ure or temp rature rise sp cified for the sura e also a p es t o the

a c s ible sura e of the sh ath

1 101 It s al b p s ible to o erate bla k ts an mat re s s without ris of he tstroke to

the u er

Complian e is c e k d b t he fo owin t es

Th a p a c is su p ed as sp cified in 1 4 a d o erat ed u der normal o eration u til

ste dy c ndit io s are est ab sh d Th ambient temp rature is maint ain d at the most

u fa o ra l e temp rature b twe n 0 °C a d 15 °C C ontrol units a d c rd switc es are

ad justed to the hig est set tin re omme d ed for c ntin o s use, ex ce t for wraps wh n the

l owest setting for c nt in o s use is used

Th t emp rat ure of t he sura e of t he flexible part is determined b me ns of a thermo o pl e

3 0 mm × 3 0 mm × 0,5 mm F or overblankets, the pl ate is pla ed u der th flexible part

For underblankets a d mattre s s, the pl at e is pla ed o er the flexible part

Th temp rature sh l n t exce d 6 °C during the first h ur of o erat ion I sh ll t he n t

exce d

– 45 °C, for o e third of the len t h oft he flexible part n arest th fo t e d of the b d;

I f t he e ds of the he ting element are c ntained in a plast ic sh ath attac ed to th flexible

part, t he temp rature l imit sp cified also a p es to th a c s ible sura e of the sh ath

I f the control unit a t omatic ly switc es to a l ower set tin during the first h ur of o erat ion,

I t ma b n c s ary t o c nt in e t he t est after ste dy c nditio s h v b e estab sh d to

e sure t hat the control unit does n t su se u nt ly re ert to a hig er h at sett in , result ing in

th t emp rat ure limits b ing exce ded

1 10 The s race temp rature of pa s s al not b ex es ive if they are u ed p rtial y

covered for an exten ed p riod

Compl ian e is c e k d b the fo owin t est

P ads are su p ed as sp cified in 1 4 a d o erated u d er normal o eration exce t that 2/3

of t he flexible part is p sitio ed so th t it o erh n s th ed ge of t he plywood su p rt

Co trols are ad justed t o their hig est sett in re omme d ed for c ntinu us use a d the

sura e temp rature ofthe p d is me sured as sp cified in 1 3

Th temp rature of the sura e of the flexible part of controlled pads sh l l n t exce d 85 °C

a d t he temp rature rise ofthe sura e of other pads sh l n t ex ce d 6 K

Th c v red p rtion ma b se ured t o pre e t the pad sl i pin of t he su p rt

For matre s s, a sh et of met al fo , a pro imately 0,1 mm thic a d of suficient size t o

c v r t he are oft hat p rt of t he mattre s in orp rat ing the c re tc rying p rts, is inserted

b twe n t he matre s a d t he sh et of th rmal insulatio For oth r a plian es, two su h

sh ets ofmetal fo are inserted , o e a o e a d o e b low th flexible part, th se sh ets

b ing electric l l c n e ted to et her A u iformly d istributed l oad ofa pro imat ely 35 k /m

2

is pl ac d o the top sh et of thermal insulation

Th ara g me t is sh wn in F igure 10

13.2 Mod ific tion:

For the flexible part, the le kag c re t is me sured b twee a y p l e of the su ply a d t he

sh ets of metal foil

I nste d of the valu s sp cified, the le k ag c re t for the flexible part sh l l n t ex ce d

For the flexible part, c mpl ian e is c e k ed as foll ows:

– for blankets a d pads, b the t est of 15.101;

– for moisture-proof ap lianc s, b th t ests of 15.101 a d 15.10 H owe er, pads

su ject ed to the tests of 21.10 a d 21.1 0 are n t su jected t o t he tests of 15.10 ;

– for matre s s, b t he t ests of15.10

Th tests are n t a p c ble t o cla s III applanc s a d clas II constructio s

Th tests of Cla se 16 are c ried o t with t he a plian e still immersed or in c nt act wit h the

saline solutio

15.3 Ad d ition:

Th flexible part is n t su ject ed to t he test

15.101 Wash ble a pl ian es are la ndered a c rd ing to th instru t ions, with al p rts of the

flexible part immersed

Th flexible part is the immersed for 1 h in water c ntaining a pro imat ely 1 % NaCl at a

temp rature of 2 °C ±

5 °C after remo ing deta hable parts All of th flexible part is

immersed exce t

– a p a c inlets;

– th p int of e try of t he fl exibl e c rd, u l es it is a moisture-proofapplanc ;

– th c n e tions oft he he ting element or intern l wirin to th a plian e inlet

Th a p a c sh l l the wit hstand the electric stre gth t est of16.3 a d insp ctio sh l sh w

th t there is n tra e of water o insulation that c ul d resul t in a red uct ion of clearanc s or

cre page distanc s b l ow t he valu s sp cified in Cla se 2

For moisture-proof applianc s, insp ct ion sh l sh w that wat er h s n t p n trated the

flexible part to su h a e te t that it c uld c me into c nt act with he ting elements a d

ot her c re t-c ryin p rts

Th flexible part of wash ble a plian es fitt ed wit h a n n-detachable flexible cord is

immersed a ain in t he sa n solut ion u t il it is sat urated I is the fol d ed a o t its major ax is

a d plac d over a l ine lo ated 2 m a ove th fl oor Th c rd is fe ly susp nd ed , a y exces

Th switc or control unit sh l l the wit hsta d th ele tric stre gth test of 16.3 a d

insp ct ion sh l l sh w that there is n tra e of water o insul ation that c ul d resul t in a

red uction of clearanc s or cre page distanc s b low th v l ues sp cified in Cl ause 2

15.10 An in ision is mad e in the p rma e t e cl osure a d the flexible part is t he

immersed in the sa n solut io that is al l owed to p n trate fe ly int o the interior

After a p riod of 1 h, t he a p a c sh ll withstand t he ele tric stre gt h test of 16.3 a d

insp ction sh l l sh w that there is n tra e of water o insul ation t hat c ul d resul t in a

red uction of clearanc s or cre page distanc s b low th v l ues sp cified in Cl ause 2

15.10 Mattre s s are su p rted o a pie e of plywo d A q a tity of water, c nt aining

a prox imately 1 % NaCl, c resp nd ing to 1 l /m

2

of t he u p r sura e are , is p ured

u iformly o er t he mattre s at th rate of 1 l/min

Th saline sol ution is allowed t o so k int o th mat re s for a p riod of 3 min

Th flexible part sh l l the withstand t he el ectric stre gth test of16.3 a d insp ctio sh ll

sh w th t there is n tra e of wat er o insulation that c uld result in a red uction of

clearanc s or cre page distanc s b low the valu s sp cified in Cl ause 2

16 Leaka e cur ent and electric strength

This clau e of Part 1 is a pl ca le ex e t as f ol ows

16.1 Ad d ition:

Th tests are n t a p c ble t o cla s I applanc s a d clas III constructio s

16.2 Ad d ition:

Th flexible part of blankets a d pads is t ested with th vol t ag a p ed b twee lve parts

a d a el ectrode immersed in t he sa n sol ution

Th flexible part of matre s s is c v red wit h met al foil

Th l eak ag c re t offlexible parts sh l l n t ex ce d

– for pads, 1 mA;

– for blankets a d matre s s, 5 mA

16.3 Mod ific t ion:

Th flexible part of blankets a d pads is tested wit h the vol tag a pl ied b twe n live parts

a d a electrode immersed in t he saline solution H owev r, whe the test is c ried o t o

blan ets a d pads witho t first c rying o t the tests of Cla se 15, t he flexible part is

c v red wit h metal fo inste d

Add ition:

Aft er the tes th flexible part of blankets a d pads is t horo g ly rinsed in water a d the

all owed to dry for at le st 2 h at a t emp rat ure b twe n 2 °C a d 4 °C During t he dryin

p riod, t he a p a c is stretch d in a at tempt to re ain the origin l d ime sio s

Matre s s are rinsed with a q a tity of water c resp nding to 0,5 l/m of th u p r sura e

Th water is p ured e e ly o er the u p r sura e a d t he wiped wit h a sp n e, so k in u

as mu h water as p s ible This tre t me t is c ried o t thre t imes a d th matre s is the

wiped with a dry cl ot h

17 Overload protection of transf ormers and associated circ its

I nstead of t he tests sp cified, t he foll owing a p es

Blankets, other tha ruck-re istant blankets, are su jected to the tests of19.101 to 19.10

19.10 a d 19.10

Ruck-re istant blankets are su je ted t o the test s of 19.10 , 19.105 a d 19.10

P ads are su ject ed to the tests of 19.10 , 19.10 , 19.10 a d 19.1 0 Controlled pads are

also su jected t o t he test s of19.10

Mattre s s are su jected to the tests of 19.10 a d 19.10 a d 19.1 3

Ap l ian es inc rp rating a fuse-l ink or intentionally we k part th t ru tures d ue to a sh rt

circ it are also su jected t o th t est of19.107

Fuse-links inc rp rated in a a plian e t o prot ect t he flexible part a ainst overh at ing or

ignition are n t su je ted t o the tests of19.12

Ap lian es in orp rating ele tronic circuits are also su je ted t o the t ests of 19.1 a d

19.12

U nl es otherwise sp cified , the a plian e is su p ed wit h a v l ta e

– b twee 0,9 t imes a d 1,1 times t he rated v ltage, for controlled applianc s,

– resul tin in a p wer in ut b twee 0,85 times a d 1,2 times the rated power in ut, for

other a pl ian es

19.1 3 Ad d ition:

Th test of 19.1 1 is n t re e ted

19.13 Ad d ition:

Th test of 15.101 is c r ied o t b fore t he test of 16.3

Fa ure of a ele tro ic switch in the of position or stand-b mod e d oes n t result in a

dangero s malfunction

Th temp rature of t he flexible part in c ntact wit h the t hermal insulation sh l l n t exce d

165 °C for controlled applanc s a d t he temp rat ure rise sh ll n t exce d 150 K for oth r

a p a c s

Unl es t he a p a c is n l on er in a o erating c nd ition aft er the tests, th t emp rat ure of

he ting elements or electro-conductive textiles sh l l n t ex ce d 16 °C for controlled

applanc s and th t emp rat ure rise sh l l n t exce d 145 K for ot her a pl ian es

thermal cut-outs are o erated u d er normal operation exce t that the flexible part is

u c vered a d fol d ed at the most u favoura le pl ac wit h a thre - hicknes fold Th fold is

4 mm wid e, 4 0 mm l on a d is fa n d o t at the e ds, as sh wn in Figure 10 A sh et of

th rmal nsulat io , h ving d ime sio s of 3 0 mm × 450 mm × 3 mm, is pl ac d o th fold ed

blanket at h most u fa o rable lo ation

For al underblankets, ot her tha ruck-re istant blankets, the test is al so c ried o t with

the flexible part c mpl et ely c v red, as sp cified for normal operation

Void

normal o eratio exce t that th flexible part is u c v red a d fol ded at t he most

u fa o ra le pl ac with a five- hicknes fol d h ving th most u fa o ra le d ime sio s Th

fol d is 10 mm wide, 4 0 mm l on a d is fa n d o t at t he e ds A sh et of th rmal insulat ion

as sp cified in An e AA, h ving d ime sions of3 0 mm × 450 mm × 9 7 2 mm, is plac d o

th fold ed bl ank et at th most u fa o ra le lo ation An evenly d istributed mas of5 k g is

pla ed o t he sh et of t hermal insulat io

Th wid ths ofe c fol d ma b d iffere t a d a sa d ba ma b used as the mas

I f t he blanket c n ot b fold ed wit h five thic n s es, it is test ed as a mat re s

Th a pl ian e is su plied wit h a voltag at the u p r l imit of t he ra g sp cified in 19.1

19.10 Overblankets are o erat ed u d er n rmal operation exce t t hat the flexible part is

u c vered a d fold ed at th most u favoura le pl ac with a fiv -thic n s fol d Th fold is of

a y e u l width u to 7 5 mm, it is 4 0 mm lon a d is fa n d o t at t he e ds A sh et of

blanket at t he most u fa o rable lo ation An e e ly d istributed mas of 5 k is plac d o the

th flexible part Th thermal insulat io is a plied in the most u fa o ra l e p sition

Ex ampl es ofp sit ions are sh wn in Figure 105

Void

flexible part is u c vered a d fol ded at the most u favoura le pla e with a thre -hicknes

u fa o ra l e lo at ion An evenly d istribut ed mas of5 k is pl ac d on the sh et of thermal

insul ation

Void

19.10 P ads are o erated u der normal o eration ex ce t that t he flexible part is fold ed

wit h a do ble-thick nes fold Th fold is p rall el t o o e of t he edg s of the flexible part , t he

pla e a d the width ofthe fold b ing sel ected to prod uc the most u fa o ra le result Th

u p r sura e of the flexible part is u c vered or p rtiall c v red b a sh et of thermal

insul ation, whic e er is more u fa o ra l e Th thermal insul at ion h s a l en t h e u l to t he

wid th of th pad a d a widt h e u l to o e-third of the le gt h of t he pad I t is 3 mm thic a d

is pla ed in t he most u fa o ra l e p sition Ex mples of folds a d the p sition of the thermal

insul ation are sh wn in Figure 10

Void

19.10 If c mplian e wit h 19.101 t o 19.10 19.10 , 19.1 0 a d 19.1 3 de e ds o the

ru turin of a fuse-l i k or int ent ion l l wea p rt, t he t est is re e ted wit h the flexible part

ar a g d as sp cified b t wit h th p int of max imum imp d an e of the prot ection circ it

included in t he most u fa o ra le p rt of the fol d Th a plian e is su plied with a v lt ag at

th l ower l imit of t he ra g sp cified in 19.1

19.10 Ap l ian es are o erated u d er the c nd itions sp cified in Clause 1 An c ntrol

th t l imits th t emp rature d uring the test of Clause 1 is sh rt -circ it ed

I f t he a p a c inc rp rates more t ha o e c ntrol, t he are sh rt -circ ited in turn

19.10 Controlled pads are o erated u der n rmal operatio exce t that two- hirds ofthe

flexible part is p sition d so that it o erh n s the ed ge ofthe plywo d su p rt

Th c v red p rtion ma b se ured t o pre e t the pad sl i pin of t he su p rt

19.1 0 P ads are o erat ed u d er normal operation ex ce t that the flexible part is

u c vered a d fold ed at th most u fa o ra le pla e with a thre -hicknes fol d h ving th

most u favoura le d ime sions Th fold is u to 4 mm wid e a d of a y len t h u to th width

of the pad Th u p r sh et of t hermal insul ation h s A sh et of t hermal insulation as

sp cified in An e AA, h vin dime sions of3 0 mm × 450 mm × 3 7 2 mm is pl ac d o the

fol ded pad at t he most u favoura le l oc t io An e e ly d istrib t ed mas of 5 k is pl ac d o

th u p r sh et of thermal insulation

Th wid ths of e c fol d ma b d iffere t a d a sa d ba ma b used as the mas

19.1 1 Ap l an es s al b con tru ted so that f ai ure of a comp nent do s not give rise to

an ex es ive temp rature

Compl ian e is c e k d as follows

Blankets a d matre s s are o erated u der the c nd itions of 1 101

P ads are o erated u d er normal operation Co trols are ad justed t o th hig est sett ing

re omme d ed for c nt inu us use, th pad b ing su p ed as sp cified in 1 4

Fa ure of c mp n nts t hat c uld re so a ly b expe t ed to o c r in n rmal use is simul at ed,

ex ce t t hat switc ing c ntacts are n t sh rt-circ it ed Only o e fa lt c nd ition is a pl ied at a

time

NOT He tin elements a d intern l wirin are n t c n id re to b c mp n nts

Fa ure of c mp n nts that are e p cted to o c r in n rmal use are t he fa l t c nd it io s

sp cified in a) to g) of 19.1 2

During the tes the temp rat ure of the sura e of the flexible part sh l n t ex ce d

– 6 °C, for blankets a d mattre s s;

– 85 °C, for controlled pads For other pads, th temp rature rise sh l l n t exce d 6 K

19.1 2 Ap l an es in orp ratin

• he ting eleme ts;

• internal wirin havin stran ed con u tors; or

• an u s e thed core of a flexible cord within the f le ible part exten in more than 10 mm

fom the cord an horage

s al not at ain ex es ive temp ratures in normal u e if one or more stran s are broken

Complian e is c e ked b th t ests of 19.1 2.1 t o 19.1 2.3 as a pro riate or b as es me t

of t he protection system

19.1 2.1 I f he ting elements or int ern l wiring do n t h v integral insulatio , a d h v

ind ividu l stra ds t hat are n t ele tric l l insul ated fom e c oth r, the e cl osure of t he

flexible part is o e ed at the most u fa o ra le plac a d a sh rt len th of the b re

c nd uctor is e p sed All but o e of the stra ds are c t a d fold ed b c b a pro imat ely

15 mm Th e closure is th n closed a d the a pl ian e o erated u der n rmal operation

for 4 h

I f t he sin le stra d ru tures b fore a y d ama e o c rs, t he test is re e t ed with t he n mb r

of u c t stra ds in re sed to the minimum n c s ary to prevent ru turing

Aft er the test, th re sh l l b n sc rc in oft he e cl osure or of a y material in c nt act with

th u c t stra ds

19.1 2.2 If he ting elements or intern l wiring h v inte ral insul ation, a d h v ind ividu l

stra ds t hat are n t el ectric l l insul at ed fom e c oth r, the e closure of th flexible part is

o e ed at th most u fa o ra l e pla e a d a sh rt le gth of the insul ated c nd uctor is

ex posed A single ide tic l stra d 10 mm lon is wra p d for o e c mplete turn aro nd the

insul ation of the c nd uctor, the e ds of the t urn b in sp c d 1 mm a art Th stra d is

c n e t ed in series with the c nd uctor, th e closure is the cl osed a d t he a p a c

I f t he sin le stra d ru tures b fore a y d ama e o c rs, t he test is re e ted with the n mb r

of stra ds in re sed t o th minimum n c s ary to pre e t ru turing

After the t est, t here sh l l b n dama e t o the insulatio of the c nd uct or or to ot her material

of t he flexible part

NOT A slg t in e tatio of th in ulatio of th c n u tor is n gle te

19.1 2.3 I f he ting elements or int ern l wirin h ve ind ivid ual stra ds t hat are el ectric l l

insul ated fom e c other, t he he ting element or wirin is d isc n e t ed fom its t erminals A

d.c volt ag of a pro imately 50 V is a p ed for 1 min b twee a y t wo stra ds

Th insul ation resist an e is me sured a d sh ll n t b l es t ha

– for class II applianc s, 0,1 M Ω;

– for other a p a c s, 1 M Ω

19.1 3 Matre s s are o erated u der normal operation ex ce t t hat t he flexible part is

u fa o ra l e way Suficient material of the perma e t e cl osure of th flexible part is

remo ed at the most u fa o ra le l oc tio t o g t a c s to t he heatin element ru s Th

high-temp rature tap whic is n t t o b overlap ed more tha o c A sh et of thermal insul ation

as sp cified in An e AA, h ving d ime sions of 3 0 mm × 450 mm × 7 2 mm, is pl ac d o t he

5 k g is plac d o t he sh et ofthermal insul ation A sa d ba ma b used as the mas

I f t he c nstru tio d oes n t al low the he ting element ru s to b b n h d tog ther, t he

he ting element as embly is removed fom th mattre s a d su jected t o th t est of 19.10

20 Stabi ity and mec anic l hazards

This clau e of Part 1 is a pl ca le ex e t as f ol ows

2 1 Ad d ition:

Th test is o ly a pl ied t o control units intended to b pla ed o a sura e

21 Mec anic l strength

This clau e of Part 1 is a pl ca le ex e t as f ol ows

21.1 Ad d ition:

C ontrol units intend ed t o b pla ed o a sura e are also su ject ed to the test of21.101

Compl ian e for t he flexible part is c e k ed as fo ows:

– for blankets, b t he tests of21.10 , 21.105 a d 21.10 ;

– for matre s s, b t he t ests of 21.10 to 21.10 ;

– for pads, b t he tests of 21.10 a d 21.105 to 21.107

Aft er these tests, insp ction of the flexible part sh l n t sh w

– dama e b t wee b sb rs ele trod es a d electro-co ductive material textile or

b twee b sb rs ele trodes a d their c n e t io s;

•– th t the e cl osure is cra k d or t orn if it provides ele tric l insulat ion or prot ect ion

a ainst moisture;

•– th t the h ating eleme t h s moved in th c a n ls so th t two ru s c me into c nt act

wit h e c other;

– bre kag of a y c nd uctive thre d of ele tro-conductive textiles;

– bre kag of th c ndu tors of th he ting element;

– bre kag of more th n 10 % of t he stra ds of int ern l wiring;

– fail ure of c nstru t ion l stitc ing, or bre k g of glued or wel d ed joints, to su h a e te t

that c mp a c wit h the sta dard is imp ired ;

– l oose ing of a no -detachable flexible cord fom the flexible part;

– l oose ing or bre k g of electric l c n e tions;

– o e -circ itin of c ntrol s inc rp rated in th flexible part

21.2 Ad d ition:

This s bclau e is not a pl ca le to f le ible parts ex e t those in orp ratin ele

tro-condu tiv te ti e havin a working volta e a ove 2 V

21.101 The control unit is dro p d fom a h ight of 4 mm o t o a rigidly mo nt ed ste l

plate h vin a thick nes of at le st 15 mm a d a mas of at l east 15 kg I t is dro p d so that

it la ds o its b se, t he test b ing c ried o t 10 times

Th control unit is the dro p d thre t imes fom a h ight of 50 mm o to a h rd wo d fl oor

b p ll ing it fom a h rizo t al su p rt b me ns of its c rd so t hat it fals fe ly

Aft er t he tes the control unit sh l n t b dama ed t o su h a e t ent t hat c mplian e wit h

this stand ard is imp ired I f the co trol unit stil l o erat es, th a p a c sh l l withsta d t he

tests ofCl ause 1

21.10 Blankets are se urely att ac ed to th a p ratus d escribed in Ann x BB

Th blanket is p ll ed b the drivin b r, th driving spro k et o erating at a sp ed of 3 rmin

Th blan et is rotated 1 0 0 times wit h a e d attac ed to t he driving b r I is the t urn d

thro g 9 ° a d rot at ed a oth r 1 0 0 times

Th tests are c r ied o t with th same fa e of t he blanket ad jac nt to the drum

Wh n it is o vious whic e d oft he blanket is int end ed to b p sition d at th h ad oft he

b d , t hat e d is attac ed t o the drivin b r Wh n this is n t o vious, t he e d o p sit e the

c rd e try is attac ed to th drivin b r

Wh n t he blanket is turn d thro g 9 °, the sid e o p site t he c rd e try is atta h d to t he

driving b r

21.10 P ads, with a y deta hable cover remo ed , are driv n b ck wards a d forwards o er

a smo t h h rizo t al rol l er h ving a d iameter of 25 mm Th pad is ar a g d so th t o e e d

h n s v rtic l l over the rol l er whil e the fu le gth ofth other e d is clamp d to t he driving

me ns, whic moves in a h rizo tal pl an

A clamp is att ac ed t o t he e d of th vertic l p rt of the pad over its fu le gth A mas of

0,5 k g, or e uiv l ent to 3 g/mm of the len th of th att ac ed e d, whic ever is gre t er, is

attac ed to t he clamp

Th strok e ofth driving me ns is su h t hat the gre test p s ible are is su jected to fl exin

Th drivin me ns is o erated at a rate of a prox imately 125 mm/s for 2 0 0 c cl es Th pad

is t he turn d thro g 9 ° a d su jected t o a furt her 2 0 0 c cl es

Th tests are c r ied o t wit h th same fa e of the pad adjac nt t o the rol l er

NOT A c cle is two mo eme ts, o e in e c dire tio

21.10 Matre s s are l aid fl at o a h rizo tal plywood su p rt A rol ler of similar

c nstru tion to t he drum sp cified in An e BB, h vin a mas of 61,5 k a d a le gth of 1 m,

is ro ed sl owly forwards a d b ck wards over t he u p r sura e of the flexible part in t he

most u favoura le pl ac Th rol l er is a plied in t he d ire tion of the major a is o er the same

p t h for 1 0 0 c cl es

NOT A c cle is two mo eme ts, o e in e c dire tio

21.10 Ap lian es are o erated for 50 h c ntinu usly u d er th c nd itions sp cified in

Cl ause 1 N on-c ntro ed a p a c s a d controlled applianc s h ving a metal lic

temp rature se sor are test ed for 50 h Other a pl ian es are o erat ed for 1 0 0 h Th

sura e t emp rat ure of t he flexible part of co trolled applanc s is me sured u d er steady

c nd itions at th b ginning a d at th e d of t his p riod I t sh l l n t h v incre sed b more

tha 5 K If the o eration of the protective devic is l i ely to b adversel y afe t ed b a ing

of the t emp rature-se sing system, the durat io oft he test is in re sed to 1 0 0 h

For a pl ian es wit h he ting elements with P TC chara teristic , th test is c r ied o t for

1 0 0 h b t wit h the flexible part fu y c vered with a sh et of thermal insul at ion, as sp cified

in An e AA, h ving a thick es of9 mm H owe er, t he temp rat ure oft he he ting element

with P TC chara teristic is me sured after 10 h a d at th e d of th test u d er the

c nd itions sp cified in Cl ause 1 I sh l n t h v incre sed b more tha 5 K

21.10 Th flexible part is su ject ed to the fol lowing tes

For blankets, the t est of 21.10 is re e ted b t with the other fa e of the flexible part

ad jac nt to t he drum

For pads, the test of 21.10 is re e t ed b t with th other fa e of the flexible part ad jac nt

to the roll er

For mat re s s, the test of21.10 is re e ted b t wit h the roller mo ed in t he dire t io of th

min r ax is In t his c se, 2 00 c cles are c ried o t, 1 0 0 in e c of two n n-overl ap ing

p t hs

21.10 P ads are su jected t o a test in a t umbling b rel as sh wn in Fig re 107, their

supply cords h ving b e c t of at a dist an e of 10 mm fom the flexible part Th b r el

is t urn d at a rat e of6 rmin to 7 rmin, so t hat t he pad fa s o to a st eel plate twic in e c

re olut ion, t he n mb r of revolutio s b ing 50

21.10 Ap l an es havin he ting eleme ts that are retained in p sition by b n ed layers

s al have adeq ate mec anical stren th

Compl ian e is c e k d b the fo owin test

Six samples ofthe b nd ed mat erial, e c h vin d ime sio s of 10 mm × 13 mm, are c t

fom t he flexible part Thre of t he sampl es are c t in the d ire tion ofthe ru s of the he ting

element a d the ot her thre sampl es are c t p rp nd ic lar t o t his dire tion

From the e ds me suring 10 mm, a strip of the material ret aining the he tin element in

p sit io a d h ving a widt h of25 mm is c t awa fom o e fa e at o e e d of e c sample

An th r simil r strip is removed fom the o p sit e fa e a d at the o p site e d of t he sampl e

An he tin element situated u der the remo ed strips is also c t away

NOT It ma b n c s ary to c t awa more th n o e la er inord r to te t th b n in of th la ers retainin th

he tin element

Cl amps are atta h d to the fu l en th of t he remaining l ayers of material at b th e ds of the

sampl e

Th sample is the susp nd ed b o e ofthe cl amps a d su jected t o a t otal lo d of 1,25 k g

b me ns of t he other clamp Th test is c ried o t for 1 h at a temp rat ure of 2 °C, a d

th n for 1 h at a temp rature of 8 °C

Th test is re e t ed o six sampl es tak n fom the flexible part ofa n w a pl ian e

Th l ay rs ret aining th he ting element in p sition sh l l n t se arate

21.10 The en los re of moisture-proof ap l a c s con istin of plastic s e tin s al

have adeq ate flexibi ty u der cold con ition

Compl ian e is c e k ed b t he foll owing test u les t he a p a c c mplies with t he test of

15.10 or h s a e closure mad e fom reinforc d plastic sh eting

Th sh eting is c t into 10 re tan ular samples, e c b ing 145 mm l on a d 50 mm wid e

wit h the l on er dime sion p rp ndic l ar t o a y striations resulting fom th ma ufa t uring

pro es

Eac sampl e is fold ed a o t its min r a is a d all owed t o form a l oo witho t cre ses I is

stapled t o a c rd t wic , th staples b ing pla ed cl ose to et her a d a pro imat ely 3 mm

fom t he ed ges, as sh wn in Figure 10

Th test a p rat us, whic is also sh wn in Figure 10 , h s a ste l arm t hat is fe ly pivoted

at o e e d so that t he other e d c n fal a ainst a steel a v o whic th sample is pl ac d

Th mas of th arm as embly is 3,1 k ± 0,0 k g, t he arm a d a v b ing gro ved to cl ear

th stapl es fixing the sampl es to th c rd

With its arm in th o e p sition, th t est a p rat us is pl ac d in a top-o e ing c binet, t he

temp rature ofwhic is maintained at – 0 °C ± 2 °C

Wh n ste dy c nd itions are estab sh d, a 10 sampl es are pl ac d o th fl oor oft he c bin t

wit h t heir l oo s u p rmost for 1 h A sampl e is the pla ed with its lo p u p rmost o the

a vil of th test a p ratus

Th arm of the test a p ratus is the a owed to fa a d strike the sampl e fom a a gl e of

85 ° to the h rizo t al

Th test is c ried o t o t he ot her sampl es as q ickly as p s ibl e

N o more tha two sampl es sh l l bre k into se arat e piec s

21.1 0 The en los re of moisture-proof appl a c s s al have adeq ate resistan e to

te rin u der normal con ition of u e

For e closures ofplast ic sh eting, c mp a c is c e k ed b the t est of 21.1 0.1

NOT Th te t is n t c rie o t if th a pla c h s b e s bje te to th te t of 5.10 or if th e clo ure is

ma e fom reinforc d pla tic s e tin

For e closures of ru b rised or simil arly tre ted fa rics, c mplian e is c e k d b t he t ests

of 21.1 0.2 t o 21.1 0.4 For e closures ofse med fa ric, c mpl i an e is also c e k d b the

test of 21.1 0.5

21.1 0.1 Five samples of t he plastic sh etin , as sh wn in F igure 10 , are c nd it io ed at a

ambient temp rature of 2 °C ± 2 °C Th lo g r dime sion is p rp nd ic l ar t o a y striat io s

resul t in fom the ma ufa turin pro es

Th sh rt er edg s of e c sample are attac ed over th ir fu le gth to t he cl amps of a tensil

ma hine, the sample a d th clamps b ing in th same pla e Th clamps are se arated at a

rate of 50 mm/min u til the sample tears Th max imum bre k in l oad is me sured

Th a era e bre k ing lo d of t he fiv sampl es sh l b n t l es tha 12,5 N

21.1 0.2 A sample of th tre ted fa ric h ving a d iamet er of 76 mm is clamp d b twe n two

d isks, e c h vin a diameter n t les th n 7 6 mm a d a c n e tric a erture h vin a

d iamet er of 2 mm ± 0,7 mm This as embly is mo nted in a a p rat us so th t wat er

pres ure c n b a plied t o the u tre ted sid e oft he fa ric Th water pres ure is gradu l l

incre sed a d is me sured whe leakag o c rs thro g th fa ric I shal n t b les tha

410 kPa

This test is c ried o t o t hre samples

Th a era e v lu of th pres ure sh ll b at le st 4 0 kPa

21.1 0.3 Thre sets of t hre samples, as sp cified in 21.1 0.2, are c nd ition d as fo ows

Th first set is immersed in b iling wat er for 1 h a d th n a ed in a h at in c binet at a

temp rature of 10 °C ± 1 °C for 1 0 0 h Th sampl es are the immersed a ain for 1 h in

b il ing wat er

Th se o d set is a ed in a ox yge b mb for 16 h, the oxyge h ving a pres ure of

a pro imately 2,0 MPa a d a temp rature of 8 °C ± 1 °C

Th third set is a ed in a air b mb for 2 h, t he air h ving a pres ure of a pro imately

0,5 MPa a d a t emp rat ure of 127 °C

± 1 °C

Th test of 21.1 0.2 is t he c ried o t o e c sampl e

Th avera e value oft he pres ure for e c set of sampl es sh ll b at le st 70 % ofthe v lue

o tained during th original test of 21.1 0.2

21.1 0.4 Thre sampl es, as sp cified in 21.1 0.2, are fol ded b c wards a d forwards

10 t imes

This test is also c ried o t o t hre simil ar samples t hat h ve b e c nd ition d as sp cified

in 21.1 0.3 for th first set

21.1 0.5 Twenty sampl es of se med fa ric, h ving d ime sio s of 7 5 mm × 25 mm, are c t

so th t the se m lies al on the min r a is Th y are t he d ivided into fo r sets of fiv

samples a d thre ofthe sets are c nd it ion d as sp cified in 21.1 0.3

Al l fo r sets ofsamples are the su je ted to a grad ua y in re sing tensil e forc u t il th

se m st arts to se arate

Th a era e valu of th forc n c s ary to se arate the se ms sh l b at least 2 N

21.1 1 The in ulation of he ting eleme ts an internal wirin in the f le ible part s al

retain adeq ate flexibi ty an in ulatin c aracteristic throu hout the l fe of the ap l an e

The req irement do s not a ply to Cla s I I appl a c s havin a rate volta e not

ex e din 2 V or to Cla s I I construction havin a workin volta e not ex e din 2 V

Compl ian e is c e k ed b the tests of 21.1 1.1 a d also b the t ests of 21.1 1.2 a d

21.1 1.3 whe t he insulation exce ds

– a temp rature of 75 °C for controlled applianc s or a temp rat ure rise of 50 K for oth r

a p a c s d urin the test of Cl ause 1 , or

– a t emp rat ure of 135 °C for co trolled applianc s or a t emp rature rise of 1 0 K for

other a plian es d urin the t ests of Cl ause 19

Th tests are c ried o t o n w sampl es of he ting element or intern l wirin For

a p a c s h ving a bo ded enclosure, th samples are tak n fom a n w a p a c

For th test of21.1 1.1, o e sampl e me surin a pro imately 4 m in len t h is re uired F or

th tests of 21.1 1.2, at l east 12 samples are re uired, e c h ving a len t h of 3 0 mm For

the test of 21.1 1.3, 12 sampl es are re uired e c h ving a l en th of 3 0 mm

Th test of21.1 1.2 is al so a plied to th plastic sh ath th t prote ts the e ds of t he he ting

element a d is att ac ed to t he flexible part

Th t ests are also a pl ied to a sh ath that c mprises ba ic insulation o er e rthed p rts

wh n th sh ath is integral with th he ting element

21.1 1.1 Th sample of he ting element or intern l wirin is attac ed to th e uipme t

sh wn in F ig re 1 0 This e uipme t h s a c rier with t wo p l leys, e c h vin a gro ve

wit h a radius of4 mm, the d iamet er at the b se oft he gro ve b in 25 mm For sampl es n t

h ving a circ l ar cros -se tion, t he form of th gro ve in th p l ley is suit ably mod ified Th

p ll eys are ara g d so t hat the sample is h rizo tal where it pas es b twee t hem

Th sample is stretch d o er the p ll ys, e c e d b ing lo ded wit h a mas of 0,25 k g If

n c s ary, the mas at e c e d is in re sed in ste s of 0,1 k g in ord er to e sure that t he

wires l ea in the p lleys are p ral l el t o e c oth r Restrainin cl amps are p sition d so that

th p l is always a pl ied b the mas in t he o p sit e d ire tion to whic the c rier is movin

Th d iameter of the p l l ey is incre sed to 6 mm a d t he initial l oad t o 0,5 k g for he ting

elements with PTC chara teristic used in mattre s s Th wid th a d form of t he gro ve of

th p lley are t o b a pro riat e for the sample u der tes

Th c rier is mo ed b a me ns of a c ain o er a d istan e of 1 m at a c nsta t sp ed of

a pro imately 0,3 m/s for 25 0 0 c cl es

A c cl e is t wo moveme t s, o e in e c d ire tio

A mo itoring c re t n t ex ce d in 50 mA ma b p s ed t hro g t he sample during the test

to h l p det ect bre k g of t he c nd uct or

For he tin elements with PTC chara teristic , the p wer inp t is me sured b fore a d

after t he test Th me sureme t is mad e wit h t he he ting element susp nd ed v rtic ll in

fe air a d su p ed at th rated v ltage of t he a pl ian e Both me sureme ts are c ried

o t at t he same ambient t emp rature a d wh n the p wer inp t h s st abil ized Th p wer

inp t sh l l n t in re se d urin the t est

Th sampl e is t he immersed in wat er c ntainin a pro imat ely 1 % NaCl A d c voltage of

a pro imately 50 V is a pl ied b twee the c nd uctor a d t he sa n sol ution

Th insulat ion resist an e is me sured 1 min after immersion a d sh l l b at l east 1 MΩ

21.1 1.2 Th insulat io is p ll ed of fom 12 sampl es of t he he ting element or intern l

wiring All c ndu t ive material, incl ud in se sor wires, is removed Ifthe insulat io c n ot b

p ll ed of, it is slit lo git ud in l l a d al lowed to re-cl ose after removal of th c nductive

material Ift he insulation ofth he ting element c nsists ofmore tha o e l ayer, o ly t he

o ter l ay r is remo ed p ll ed of a d tested

I n ad d ition, if t he he ting element includ es a fu ction l e rth c nd uctor, th b sic insul at ion

of t his c nd uct or is remo ed a d su je ted to the test

Six of the samples are c nd ition d b susp nding them vertic ly so t hat t he h n fe ly in a

h ating c binet, h ving forc d air circ lation, at a temp rat ure of 125 °C ± 2 °C for 3 6 h Th

sampl es are remo ed fom t he c binet a d al lowed t o c ol d own t o ro m t emp rat ure Wh n

the mat erial h s stabil ized, t he l en th of t he samples is me sured a d sh l n t b l es t ha

9 % of the original l en th PVC material wil l h ve sta ilised b 16 h after removal fom t he

c binet

Th 12 samples are pla ed in a tensil e ma hine in turn so t hat t he l en th b twee the clamps

is at l east 50 mm Th ma hine is o erat ed at a u iform sp ed of 50 mm/min ± 50 mm/min

Th forc a d elo g t io at the instant of ru t ure are determined

Results o tain d fom a y sampl e that ru tured at a forc d iferin fom t he avera e valu b

more t ha 10 %, a d fom samples t hat ru tured within a d ist an e of 15 mm fom th cl amp,

are disre ard ed Ad d ition l sampl es are tested in ord er to o tain 12 v lid resul ts

Th elo g t io of e c of the u c nd ition d sampl es sh l n t b les t ha 10 % a d their

te sil stre gth sh l l n t b les tha 8,75 MPa

Th a era e v l ue of b th t he elo g tio a d t he tensil stre gth of th c nd it io ed samples

sh l l n t b les tha 7 5 % of t he a era e val ue d et ermin d for t he u c nd it ion d samples

21.1 1.3 A 10 mm le gth of insulat io is removed fom e c e d of12 sampl es of he ting

element or intern l wiring

Six of t he sampl es are wo nd in a close h l i of six t urns o a metal ma drel h ving a

d iamet er a pro imat ely e u l to the ex tern l d iameter ofthe sampl es, a d tog ther with t he

remainin six samples are pl ac d in a h at ing c bin t, h vin forc d air circ l ation, at a

temp rature of 125 °C ± 2 °C for 3 6 h Th samples are removed fom the c binet a d

allowed t o c ol d own to ro m temp rature

Wh n the material h s stabil ized , t he other six sampl es are also wou d o the ma drel in the

same wa PVC material wil l h v sta ilised b 16 h aft er remo al fom the c bine

Th ma drel is immersed for 1 h in water c ntainin a pro imately 1 % NaCl Th samples

are the su jected to a test voltag of1 0 0 V, for clas I applianc s a d 50 V for cla s III

applanc s Th v ltag is a p ed for 1 min b t we n th c ndu tors a d th solut io Th re

sh l l b n bre k d own

Th sampl es are u wou d fom the ma d rel a d insp ctio sh l l sh w th t t here are n

visibl e cra ks

21.1 2 He ting eleme ts with PTC c ara teristic s al b resistant to cru hin

Compl ian e is c e k d b t he fo owin tes

Th flexible part is full y su p rt ed b a piec of plywood 2 mm thic a d su p ed as

sp cified in 1 4 Wh n steady c nd it ions are est ab sh d, th temp rature of t he he ting

element is me sured A blo k h vin d ime sions of 10 mm × 3 0 mm a d a mas of 8 k

with ro nd ed ed ges in c ntact wit h the flexible part is a pl ied for 5 min to th sura e in the

most u favoura le pl ac

After removing t he bloc , t he a p a c is a ain o erated u t il ste dy c nd it ions are

est ab sh d a d th t emp rat ure oft he he ting element is me sured

Th temp rature oft he he ting element where the bl oc h s b e a pl ied sh ll n t h v

incre sed b more tha 10 K

NOT Th mo t u fa o ra le pla e to a ply th blo k is u u ly at a lo p in th eleme t

21.1 3 The in ulation of f le ible parts in orp ratin ele tro-con uctiv te ti e s al retain

adeq ate f lexibi ty an in ulatin c aracteristic throu hout the l fe of the a pl an e The

req irement do s not a ply to Cla s I I appl a c s havin a rate volta e not ex e din

2 V or to Cla s I con tructions havin a working volta e not ex e din 2 V

Compl ian e is c e k d b the t ests of 21.113.1 a d 21.1 3.2 w he t he insulat ion exce ds

– a temp rature of75 °C for controlled applianc s or a temp rat ure rise of 50 K for oth r

a p a c s d urin the t est of Cl ause 1 ; or

– a t emp rat ure of 135 °C for controlled applianc s or a t emp rat ure rise of 1 0 K for

ot her a pl ian es d urin the t ests of Clause 19

Th tests are c r ied o t o n w samples of th flexible part

supplementary insulation or reinforc d insulation, six fom the l on itud inal d ire tion a d

six fom the l ateral d ire tion If t he insulation is int egrated with t he fa ric su p rt ing th

c nd uct ive thre ds, the t est is n t c r ied o t

Thre sampl es fom e c d ire tion are c nd ition d b susp nd ing them v rt ic ly so that th y

125 °C ± 2 °C for 3 6 h Th samples are removed fom the c bin t a d all owed t o c ol d own

to room temp rature Wh n t he mat erial h s sta ilized , th len th ofth samples is me sured

a d sh ll n t b les tha 9 % of t he original e gt h

Th 12 sampl es are pla ed in a tensil e ma hine in t urn Th ma hin is o erated at a u iform

sp ed of 50 mm/min ± 50 mm/min Th forc a d el on ation at the insta t of ru ture are

det ermined

Th elon at ion of e c of the u c nd ition d sampl es sh l l n t b les t ha 10 % a d their

Th a era e v l ue of b t h the elo g t io a d the te sil stre gth of th c nd it io ed samples

sh l l n t b les tha 7 5 % ofthe a era e value d et ermin d for t he u c nd ition d sampl es

21.1 3.2 Twelv sampl es h ving d ime sio s 2 0 mm × 10 mm are c t fom t he

electro-conductive textile, a y other c vering b in removed At le st o e sample is to incl ude a

p rt io of el ectrod e Th samples are the tig t ly rolled o a met al ma drel h ving a d iameter

of 25 mm al on th l ine oft he c nd uctiv thre d s, if a y Th ro ma b h l d t og t her b

suitable t ap

Th y are t he plac d in a h at ing c bin t h ving forc d air circ l ation at a t emp rat ure of

125 °C

± 2 °C for 3 6 h Th samples are removed fom the c binet a d all owed t o c ol down

to ro m temp rat ure Th y are th n u wou d a d remo ed fom th ma drel

A sample is th n pl ac d c ntra y o a metal pl ate h ving d ime sions of 18 mm

a simil ar plate pla ed o to a d weighted so that t he a plied mas is 5 k Th sampl e is

th n su ject ed t o th el ectric stre gth test of 16.3 Th oth r 1 sampl es are t he t est ed in

I nsp ction sh l l sh w t hat t here are n visibl e cra ks in t he insulation

22 Construction

This clau e of Part 1 is a pl ca le ex e t as f olows

2 2 Ad d it ion:

Parts of cla s I construction s al have a working volta e not ex e din 2 V

Compl ian e is c e k d b test a d me sureme t

2 101 The in ulation of h ating eleme ts an internal wirin s al b integral with the

con u tors in f le ible parts, f or other than cla s I I construction

Compl ian e is c e k d b insp ctio

Void

2 10 There s al b no con ection in the h ating eleme t, ex e t where it is con ected

to thermostats, thermal c t outs, an simi ar comp nents

Compl ian e is c e k d b insp ctio

Void

2 10 The f le ible part s al b con tru ted so that he tin eleme ts, ele

tro-condu tiv te ti e an internal wirin are retained in their inten ed p sition No p rt of The

he ting eleme t s al cros over another p rt of the he ting eleme t The he ting eleme t

s al b located so that there are no cros over p ints

If the he ting eleme t or ele tro-cond ctiv te ti e is s p orted by a se arate layer of

material, this material s al b f irmly sec red to the en los re to prevent internal ru kin

Cros in of internal wirin s al b avoided as f ar as p s ible When this is u avoida le, the

wirin s al b sec red in order to prevent an relative movement This req irement do s not

Compl ian e is c e k d b insp ct io

2 10 There s al b no sig ificant c an e in the p sition of the he ting eleme ts or

bu b rs electrodes if the stitc in retainin them in p sition is broken

Compl ian e is c e k d b insp ct ion after bre king th thre d in th most u fa o ra le

pla e

2 10 Thermostats an thermal c t outs in orp rated in the f le ible part s al b

in ivid al y en losed in in ulatin material

Complian e is c e k d b insp ctio

2 10 Ruc -re ista t bla k ts s al b con tru ted so that ru kin of the fle ible part is

u l kely

Compl ian e is c e k d b the fo owin t est

An stife ing me ns is removed ifit is n t re rese tativ ofth c nstru tion of the flexible

part

Th blanket is o erated at rated p wer in ut a d u d er normal operation for 3 h I is the

remo ed fom t he sh ets of thermal insulation a d laid flat o a h rizo tal sura e whil st ill

c n e t ed t o the su ply mains Th flexible part is p sition d so that a c rn r to c es th

ed ge ofthe sura e wit h a d ia o al p rp ndic lar to it

th blanket a d p sition d so that the ed ge ofthe b ard aligns with the edg of the sura e

Th flexible part a d b ard are the slid tog ther u t il t he ed ge of th b ard overh n s the

ed ge of the sura e b 3 0 mm

Th d efl ection X, in met res, of the o erh n ing c rn r of t he flexible part is me sured as

sh wn in F igure 1 1 Th forc F, in n wtons, re uired to l ift t he overh n in c rn r to the

l ower sura e of th b ard is the me sured

Th me sureme t is re e ted o t he ot her c rn rs, ex ce t for a y c rn r c nt aining a

a p a c inlet or c rd e try

Th ru k-resistan e is c lc l ated fom F /X I t sh l l b at l east 2,5 for e c c rn r

Void

2 10 Underbla k ts, other than bla k ts havin a ru k- esistan e gre ter than 1,2

me s red as sp cif ied in 2 10 , s al b provided with me n to prevent ru kin The me n

u ed for this purp se s al b p rmanently at ac ed, en ure that the bla k t can ot ru k in

an direction an not damage the bla k t in normal u e If ta es or simi ar me n are

provided, they s al b lon enou h an p sitioned so that the bla k t can b re di y and

eff ectively sec red to the maximum size of mat res for whic it is inten ed Pin s al not b

u ed

Compl ian e is c e k d b insp ctio a d b ma u l test

Void

2 10 The dimen ion of deta hable cov rs s al b gre ter than those of the f le ible

part

Complian e is c e k d b me sureme t aft er l au d ering t he c ver thre times in a c rd an e

wit h th instru tions

2 10 Control units inten ed to stan on a table s al not have o enin s on the u derside

that could al ow smal items to p netrate an tou h l v parts

Complian e is c e k d b insp ctio a d b me surin t he d istan e b t wee the su p rting

sura e a d live parts thro g o e ings This d ist an e sh ll b at le st 6 mm

2 1 0 Fu e l n s or th rmal l nk that are in orp rated to protect the f le ible part again t

overhe tin or ig ition s al not b re lace ble by the u er

Compl ian e is c e k d b insp ctio

2 1 1 Duv ts s al have adeq ate thermal pro erties

Compl ian e is c e k d b t he fo owin tes

Th d uv t is plac d o a sh et of thermal insulatio h vin a t hic n s of7 2 mm as sp cified

in An e AA A h at so rc as sp cified in An e AA is pla ed b t we n the thermal insulat io

a d t he d uv t Wh n st eady c nd it ions are est ab sh d , the temp rature rise sh l l exce d

4 K

2 1 2 Ap l an es s al in orp rate a man al switc to control the f le ible part The switc

s al b con tru ted to prevent its actuatin memb r f rom rotatin contin ou ly in the same

direction

Switc es an control units in f lexible cord s al have an of f position at b th en s of the

travel of the actuatin memb r, u les an in icator lamp is in orp rated to s ow when the

switc is in an on p sition

Compl ian e is c e k d b insp ct io

2 1 3 Fle ible parts comprised of ele tro-condu tiv te ti e s al b of cla s I I

constru tion

Compl ian e is c e k d b insp ctio

Void

2 1 4 Wraps an pa s inten ed to b u ed in close contact with the h man b d in order

to provide he t to cre te moisture for cosmetic purp ses s al b moisture-pro f appl a c s

or the f le ible part s al b cla s I I construction

Compl ian e is c e k d b insp ct io a d tes

2 1 5 Ap l an es in orp ratin a fu ctional e rth s al have at le st double ins lation or

reinforc d ins lation b twe n l ve parts an e rthed p rts There s al b at le st ba ic

ins lation b twe n e rthed p rts an a c s ible parts

Compl ian e is c e k d b insp ctio a d tes