Special wires - NKT Cables - #2

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Pozârnë technické charakteristiky (PTCH) vodicû a kabelû
Vyhlàska MV c. 246/2001 Sb.
Stanoveni podminek pozàrni bezpecnosti a vykonu stàtniho pozàrniho dozoru (vyhlàska o pozàrni prevenci) (Podle § 54 se rusi pùvodni vyhlàska c. 21/1996 Sb., kterà tuto oblast legislativné osetfovala.)
Podle vyhlàsky c. 246/2001 Sb. se pro posuzovàni pozàrniho nebezpeci mimo jiné vyhodnocuji i pozàrné technické charakteris­tiky vyskytujicich se làtek v daném prostoru.
Definice PTCH podle § 1i)
Vlastnost làtky vyjàdfenà méfitelnou hodnotou nebo stanovenà na zàkladé méfitelnych hodnot vice dilcich vlastnosti a nebo jev, vystihujici chovàni làtky pfi procesu hofeni nebo s nim souvisejici.
Hodnoticim kritériem pro stanoveni PTCH je pro vodice a kabely stanovena jejich odolnost proti sifeni plamene. Pro ovéfovàni této odolnosti existuji nàsledujici zkusebni normy: CSN 34 7007
CSN 34 7010
CSN IEC 332 CSN EN 50265
(v minulosti pouzivané, dnes jiz neplatné normy)
Poznàmka:
Uvedené zkusebni normy obsahuji stejny typ zkousky, pficemz kazdà z nich mà jinou historickou platnost, tzn. pro kazdy vodic nebo kabel byla pouzita zkusebni norma platnà v dobé vyvoje daného vodice nebo kabelu. Aktuàlné platné normy jsou uve-deny tucné.
Pfi revizi vyrobku nebo jeho technické dokumentace bude pro hodnoceni odolnosti proti sifeni plamene pouzita aktuàlné platnà
zkusebni norma.
TYP ZKOUSKY A CHRONOLOGICKY SLED AKTUALIZACE NOREM
(aktuàlné platnà norma je uvedena tucné)
Zkouska sfreni plamene po jednom svisle zavéseném kabelu
CSN 34 7007 - CSN 34 7010-70 - CSN IEC 332-1 a 2 - CSN EN 50265-1, -2
CSN EN 60332-1, -2
Zkouska sfreni plamene po svisle zavésenych svazcfch kabelu CSN IEC 332-3 - CSN EN 50266 Zkouska funkcnf zpusobilosti kabelu pri pozàru
CSN IEC 60331
Fire-technical characteristics (PTCH) of wires and cables
Decree of MV No. 246/2001 Col.
Stipulation of safety fire conditions and performance of state fire supervision (decree about fire prevention) (Primary decree No. 21/1996 Col. that legally treated this area is cancelled according to § 54.)
Fire-technical characteristics of materials occuring in given space are also evaluated among others in order to appreciate fire hazard according to Decree No. 246/2001 Col.
PTCH definition according to § 1i)
Material characteristic expressed by measurable value or determined on the basis of measurable values of more partial properties and/or an effect that comprehends material behaviour with burning process or is connected with it.
Estimating criterion for PTCH rating is with wires and cables their resistance to flame propagation. Following test standards can be used to verify this resistance: CSN 34 7007
CSN 34 7010 CSN EN 50266
CSN IEC 332 CSN EN 60332
CSN EN 50265 CSN EN 60331
(used formerly, invalid standards at the present)
Note:
Mentioned test standards contain the same type of test, while each of them has another historical validity, ie. for each wire or cable was used that test standard which was valid during design and development of the given wire or cable. Actual valid standards are written in bold style. The actual valid test standard will be used to estimate resistance to flame propagation with review of a product or its technical specification.
TYPE OF TEST AND CHRONOLOGIC SEQUENCE OF STANDARD UPDATES
(actual valid standard is written in bold style)
Vertical flame propagation test along single insulated cable
CSN 34 7007 - CSN 34 7010-70 - CSN IEC 332-1 a 2 - CSN EN 50265-1, -2 -
Vertical flame propagation test along bunched insulated cables
CSN IEC 332-3 - CSN EN 50266
Test for cable under fire conditions - Circuit integrity CSN IEC 60331
CSN EN 60332-1, -2

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