{"id":240,"date":"2026-07-10T05:33:31","date_gmt":"2026-07-10T05:33:31","guid":{"rendered":"https:\/\/industrialelectricmotor.net\/?p=240"},"modified":"2026-07-10T05:33:31","modified_gmt":"2026-07-10T05:33:31","slug":"explosion-proof-motor-for-flour-mill-and-grain-processing","status":"publish","type":"post","link":"https:\/\/industrialelectricmotor.net\/sk\/explosion-proof-motor-for-flour-mill-and-grain-processing\/","title":{"rendered":"Motor odoln\u00fd vo\u010di v\u00fdbuchu pre mlyn\u010deky na m\u00faku a spracovanie obilia"},"content":{"rendered":"
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Korea Ever-Power \u00b7 S\u00e9ria YB2 \u00b7 Sprievodca pohonom mlyna na m\u00faku pre pr\u00edpad v\u00fdbuchu prachu<\/span><\/p>\n

<\/div>\n<\/div>\n

Motor s ochranou proti v\u00fdbuchu pre mlyn\u010deky na m\u00faku a spracovanie obilia:
\nSprievodca z\u00f3nou 21 \/ z\u00f3nou 22 s nebezpe\u010denstvom v\u00fdbuchu prachu<\/span><\/h1>\n

M\u00fa\u010dny prach, obiln\u00fd prach a \u0161krob s\u00fa klasifikovan\u00e9 ako hor\u013eav\u00fd prach s minim\u00e1lnou energiou zap\u00e1lenia pod 30 mJ \u2013 ni\u017e\u0161ou ako u mnoh\u00fdch hor\u013eav\u00fdch rozp\u00fa\u0161\u0165adiel. Oblak m\u00fa\u010dneho prachu s koncentr\u00e1ciami nad minim\u00e1lnou v\u00fdbu\u0161nou koncentr\u00e1ciou (MEC) pribli\u017ene 50 g\/m\u00b3 sa m\u00f4\u017ee zap\u00e1li\u0165 teplotou povrchu motora nad 190 \u00b0C, iskrami z komut\u00e1torov\u00fdch kief alebo statick\u00fdm v\u00fdbojom. \u0160tandardn\u00e9 motory v mlynsk\u00fdch priestoroch, valcovac\u00edch miestnostiach a triediacich miestnostiach predstavuj\u00fa riziko v\u00fdbuchu. T\u00e1to pr\u00edru\u010dka sa zaober\u00e1 klasifik\u00e1ciou prachu pre z\u00f3ny 21 a 22, certifik\u00e1ciou skupiny IIIB a v\u00fdberom K\u00f3rejsk\u00e9ho Ever-Power YB2 Ex d pre mlyny a zariadenia na spracovanie obilia.<\/p>\n

Ex t IIIB T135 alebo Ex d<\/span>
\nZ\u00f3na 21 a z\u00f3na 22<\/span>
\nPovrchov\u00fd limit T135\u00b0C<\/span>
\nMinim\u00e1lna ochrana proti prachu IP65<\/span>
\n0,55 \u2013 200 kW<\/span><\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n
\n
IIIB<\/div>\n
Skupina prachu: nevodiv\u00fd<\/div>\n<\/div>\n
\n
T135\u00b0C<\/div>\n
Maxim\u00e1lna povrchov\u00e1 teplota<\/div>\n<\/div>\n
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Z\u00f3na 21<\/div>\n
Prach pr\u00edtomn\u00fd po\u010das prev\u00e1dzky<\/div>\n<\/div>\n
\n
IP65<\/div>\n
Minim\u00e1lna hodnota ochrany pred prachom<\/div>\n<\/div>\n
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50 g\/m\u00b3<\/div>\n
M\u00fa\u010dny prach MEC<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\"Mlyn<\/p>\n
Motor Korea Ever-Power YB2 s ochranou proti v\u00fdbuchu \u2013 liatinov\u00e9 puzdro IP55 s certifik\u00e1ciou ATEX. V mlynsk\u00fdch hal\u00e1ch, valcovniach a priestoroch na manipul\u00e1ciu s obil\u00edm sa v \u0161tandardn\u00fdch motoroch s kryt\u00edm IP54 \u010dasom hromad\u00ed m\u00fa\u010dny prach vo vn\u00fatri motora; prach izoluje vinutie od r\u00e1mu, zvy\u0161uje teplotu vinutia a vytv\u00e1ra nebezpe\u010denstvo v\u00fdbuchu v d\u00f4sledku zv\u00fd\u0161enej povrchovej teploty, ako aj riziko degrad\u00e1cie elektrickej izol\u00e1cie. Prachotesn\u00e1 kon\u0161trukcia YB2 zabra\u0148uje hromadeniu prachu.<\/div>\n<\/div>\n

<\/p>\n

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Obsah<\/div>\n
1. Nebezpe\u010denstvo v\u00fdbuchu m\u00fa\u010dneho prachu<\/a>
\n2. Klasifik\u00e1cia z\u00f3ny 20, 21 a 22<\/a>
\n3. Skupina prachu IIIA, IIIB, IIIC<\/a>
\n4. Limit povrchovej teploty T135 \u00b0C<\/a>
\n5. Certifik\u00e1cia motora pre z\u00f3ny m\u00fa\u010dneho prachu<\/a>
\n6. YB2 pre aplik\u00e1cie v mlynoch na m\u00faku<\/a>
\n7. Oblasti pou\u017eitia mlynov na m\u00faku<\/a>
\n8. \u010casto kladen\u00e9 ot\u00e1zky<\/a><\/div>\n<\/div>\n

<\/p>\n

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1. Nebezpe\u010denstvo v\u00fdbuchu m\u00fa\u010dneho prachu<\/h2>\n

M\u00fa\u010dny prach, p\u0161eni\u010dn\u00fd prach, kukuri\u010dn\u00fd \u0161krob a in\u00e9 jemn\u00e9 pr\u00e1\u0161ky z obilia s\u00fa klasifikovan\u00e9 ako hor\u013eav\u00e9 prachy pod\u013ea noriem EN 60079-10-2 a NFPA 61. Ke\u010f s\u00fa tieto prachy suspendovan\u00e9 vo vzduchu v koncentr\u00e1ci\u00e1ch nad minim\u00e1lnou v\u00fdbu\u0161nou koncentr\u00e1ciou (MEC), tvoria v\u00fdbu\u0161n\u00fd oblak, ktor\u00fd sa m\u00f4\u017ee zap\u00e1li\u0165 ak\u00fdmko\u013evek zdrojom zap\u00e1lenia s dostato\u010dnou energiou \u2013 vr\u00e1tane tepl\u00f4t povrchu motora nad minim\u00e1lnou teplotou zap\u00e1lenia (MIT) vrstvy prachu.<\/p>\n

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\n
P\u0161eni\u010dn\u00fd pr\u00e1\u0161ok<\/div>\n\n\n\n\n\n\n\n\n
MEC (cloud)<\/td>\n50\u2013100 g\/m\u00b3<\/td>\n<\/tr>\n
MIT cloud<\/td>\n380 \u00b0C<\/td>\n<\/tr>\n
MIT vrstva (5 mm)<\/td>\n190 \u00b0C<\/td>\n<\/tr>\n
MIE<\/td>\n10\u201350 mJ<\/td>\n<\/tr>\n
Kst<\/td>\n56 \u2013 180 bar\u00b7m\/s<\/td>\n<\/tr>\n
Trieda prachu<\/td>\n1. sv.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
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Kukuri\u010dn\u00fd \u0161krob<\/div>\n\n\n\n\n\n\n\n\n
MEC (cloud)<\/td>\n40\u201360 g\/m\u00b3<\/td>\n<\/tr>\n
MIT cloud<\/td>\n390 \u00b0C<\/td>\n<\/tr>\n
MIT vrstva (5 mm)<\/td>\n260 \u00b0C<\/td>\n<\/tr>\n
MIE<\/td>\n30 \u2013 80 mJ<\/td>\n<\/tr>\n
Kst<\/td>\n148 \u2013 202 bar\u00b7m\/s<\/td>\n<\/tr>\n
Trieda prachu<\/td>\n1. \u2013 2. ul.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
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Zrnn\u00fd prach (zmes)<\/div>\n\n\n\n\n\n\n\n\n
MEC (cloud)<\/td>\n60\u2013125 g\/m\u00b3<\/td>\n<\/tr>\n
MIT cloud<\/td>\n430 \u00b0C<\/td>\n<\/tr>\n
MIT vrstva (5 mm)<\/td>\n220 \u00b0C<\/td>\n<\/tr>\n
MIE<\/td>\n15 \u2013 100 mJ<\/td>\n<\/tr>\n
Kst<\/td>\n43 \u2013 112 bar\u00b7m\/s<\/td>\n<\/tr>\n
Trieda prachu<\/td>\n1. sv.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
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Vrstva prachu MIT je kritickou hodnotou pre v\u00fdber motora. \u0160tandardn\u00fd r\u00e1m motora v mlyn\u00e1rni \u010dasom hromad\u00ed na svojom povrchu m\u00fa\u010dny prach a t\u00e1to vrstva prachu sa m\u00f4\u017ee vznieti\u0165, ak teplota povrchu motora prekro\u010d\u00ed MIT \u0161pecifick\u00e9ho m\u00fa\u010dneho prachu v danej oblasti. Pre p\u0161eni\u010dn\u00fa m\u00faku je vrstva MIT pribli\u017ene 190 \u00b0C \u2013 a \u0161tandardn\u00fd motor pri plnom za\u0165a\u017een\u00ed v teplej mlyn\u00e1rni m\u00f4\u017ee bezchybne dosiahnu\u0165 teplotu r\u00e1mu 120 a\u017e 150 \u00b0C, pri\u010dom sa k teplote vrstvy MIT pribli\u017euje s bezpe\u010dnostnou rezervou iba 40 a\u017e 70 \u00b0C. Motor odoln\u00fd vo\u010di v\u00fdbuchu s certifik\u00e1ciou T135 \u00b0C poskytuje bezpe\u010dnostn\u00fa rezervu 55 \u00b0C pod teplotou vrstvy p\u0161eni\u010dnej m\u00faky MIT.<\/p>\n<\/div>\n<\/div>\n

<\/p>\n

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2. Z\u00f3na 20, 21 a 22: Klasifik\u00e1cia nebezpe\u010dnosti prachu<\/h2>\n

Norma IEC 60079-10-2 klasifikuje oblasti obsahuj\u00face hor\u013eav\u00fd prach do troch z\u00f3n na z\u00e1klade frekvencie a trvania v\u00fdskytu v\u00fdbu\u0161n\u00e9ho prachov\u00e9ho oblaku. V pr\u00edpade mlynov na m\u00faku mus\u00ed klasifik\u00e1ciu ka\u017edej oblasti v r\u00e1mci zariadenia ur\u010di\u0165 kompetentn\u00e1 osoba a zdokumentova\u0165 ju v dokumente o ochrane pred v\u00fdbuchom prachu (smernica ATEX 1999\/92\/ES, \u010dl\u00e1nok 7).<\/p>\n

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Z\u00f3na 20<\/div>\n
V\u00fdbu\u0161n\u00fd oblak prachu je neust\u00e1le pr\u00edtomn\u00fd<\/div>\n

Vn\u00fatorn\u00e9 zariadenia na manipul\u00e1ciu s prachom \u2013 kore\u010dkov\u00e9 elev\u00e1tory, pneumatick\u00e9 dopravn\u00e9 syst\u00e9my, vn\u00fatorn\u00e9 priestory cykl\u00f3nov, vn\u00fatorn\u00e9 priestory vrecov\u00fdch filtrov a obiln\u00e9 sil\u00e1. V r\u00e1mci be\u017enej kon\u0161truk\u010dnej praxe sa vo vn\u00fatri zariaden\u00ed z\u00f3ny 20 nein\u0161taluj\u00fa \u017eiadne motory. Ak mus\u00ed by\u0165 motor integrovan\u00fd do zariadenia z\u00f3ny 20 (napr\u00edklad mie\u0161adlo alebo pohon dopravn\u00edka vo vn\u00fatri sila), mus\u00ed ma\u0165 certifik\u00e1t Ex ia IIIB T135 alebo ekvivalent \u2013 \u200b\u200b\u0161tandardn\u00fd plynov\u00fd motor YB2 Ex d IIB T4 nie je vhodn\u00fd pre pra\u0161n\u00e9 prostredie z\u00f3ny 20.<\/p>\n<\/div>\n

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Z\u00f3na 21<\/div>\n
Po\u010das be\u017enej prev\u00e1dzky je pravdepodobn\u00fd v\u00fdbu\u0161n\u00fd oblak prachu<\/div>\n

Oblasti okolo zariaden\u00ed na manipul\u00e1ciu s prachom \u2013 bezprostredn\u00e1 bl\u00edzkos\u0165 p\u00e4ty a hlavy kore\u010dkov\u00e9ho elev\u00e1tora, oblasti v bl\u00edzkosti v\u00fdpustn\u00fdch bodov triedi\u010da, z\u00f3n nap\u00e1jania valcov\u00e9ho mlyna a oblasti do 1 m od ak\u00e9hoko\u013evek zdroja prachu, ktor\u00fd uvo\u013e\u0148uje prach po\u010das be\u017enej prev\u00e1dzky. Toto je prim\u00e1rna z\u00f3na v akt\u00edvnych mlynsk\u00fdch miestnostiach. Motory v z\u00f3ne 21 musia by\u0165 certifikovan\u00e9 Ex t IIIB T135 (prachotesn\u00fd motor s kryt\u00edm IP6X a povrchov\u00fdm limitom T135) alebo Ex d IIB T4 (plynotesn\u00fd motor s kryt\u00edm pre plyn, ktor\u00fd tie\u017e sp\u013a\u0148a po\u017eiadavky na prachov\u00fa z\u00f3nu pod\u013ea IEC 60079 \u010das\u0165 31).<\/p>\n<\/div>\n

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Z\u00f3na 22<\/div>\n
V\u00fdbu\u0161n\u00fd oblak prachu je nepravdepodobn\u00fd, ale mo\u017en\u00fd<\/div>\n

V\u0161eobecn\u00e9 priestory mlyn\u00e1rn\u00ed a skladov obilia, kde sa prach be\u017ene nenach\u00e1dza vo v\u00fdbu\u0161n\u00fdch koncentr\u00e1ci\u00e1ch, ale kde by uvo\u013enenie prachu mohlo vytvori\u0165 v\u00fdbu\u0161n\u00e9 podmienky v d\u00f4sledku poruchy zariadenia, \u00fadr\u017eby alebo abnorm\u00e1lnych prev\u00e1dzkov\u00fdch podmienok. V\u00e4\u010d\u0161ina priestoru podlahy valcov\u00e9ho mlyna a triediacej miestnosti spad\u00e1 do z\u00f3ny 22 v dobre udr\u017eiavanom zariaden\u00ed. Z\u00f3na 22 vy\u017eaduje motory s certifik\u00e1ciou Ex t IIIB T135 alebo ekvivalentn\u00fd motor s ochranou proti prachu \u2013 \u0161tandardn\u00e9 motory IP54 nie s\u00fa prijate\u013en\u00e9 ani v z\u00f3ne 22.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

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3. Prachov\u00e1 skupina IIIA, IIIB, IIIC: Ktor\u00e1 sa vz\u0165ahuje na mlyny na m\u00faku?<\/h2>\n
\n\n\n\n\n\n\n\n
Skupina<\/th>\nTyp prachu<\/th>\nPr\u00edklady v potravin\u00e1ch a obilnin\u00e1ch<\/th>\nVhodn\u00e9 pre YB2?<\/th>\n<\/tr>\n<\/thead>\n
IIIA<\/td>\nOdletuj\u00face l\u00e1tky (hrub\u00fd vl\u00e1knit\u00fd materi\u00e1l)<\/td>\nDreven\u00e9 hobliny, jutov\u00e9 vl\u00e1kna, zvy\u0161ky plod\u00edn > 500 \u03bcm<\/td>\n\u00c1no (IIIB zah\u0155\u0148a IIIA)<\/td>\n<\/tr>\n
IIIB \u2605<\/td>\nNevodiv\u00fd prach<\/strong><\/td>\nP\u0161eni\u010dn\u00e1 m\u00faka, kukuri\u010dn\u00fd \u0161krob, obiln\u00fd prach, cukrov\u00fd prach, su\u0161en\u00e9 mlieko v pr\u00e1\u0161ku, kakao \u2013 \u0161tandard pre prachov\u00e9 z\u00f3ny spracovania potrav\u00edn<\/strong><\/td>\n\u00c1no \u2013 YB2 s hodnoten\u00edm IIIB<\/td>\n<\/tr>\n
IIIC<\/td>\nVodiv\u00fd prach (mern\u00fd odpor < 10\u2074 \u03a9\u00b7m)<\/td>\nHlin\u00edkov\u00fd pr\u00e1\u0161ok, hor\u010d\u00edkov\u00fd pr\u00e1\u0161ok, sadze \u2013 nie s\u00fa typick\u00e9 pre mlyny na m\u00faku<\/td>\nNie (vy\u017eaduje motor IIIC)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

M\u00faka, \u0161krob, obiln\u00fd prach, cukor, su\u0161en\u00e9 mlieko a kakao patria do skupiny IIIB (nevodiv\u00fd) prach. S\u00e9ria Korea Ever-Power YB2 s certifik\u00e1ciou Ex t IIIB T135 alebo Ex d IIB T4 pokr\u00fdva v\u0161etky \u0161tandardn\u00e9 aplik\u00e1cie motorov pre mlyny na m\u00faku a prachov\u00e9 z\u00f3ny spracovania obilia. Pred ur\u010den\u00edm skupiny motora si overte dokument o klasifik\u00e1cii prachu pre konkr\u00e9tne zariadenie, aby ste sa uistili, \u017ee sa v tej istej oblasti nespracov\u00e1va \u017eiadny prach IIIC (hlin\u00edkov\u00fd alebo hor\u010d\u00edkov\u00fd pr\u00e1\u0161ok).<\/p>\n<\/div>\n

<\/p>\n

\n

4. T135 \u00b0C: Limit povrchovej teploty pre m\u00fa\u010dny prach<\/h2>\n

Trieda povrchovej teploty T135 \u00b0C obmedzuje teplotu povrchu krytu motora na maxim\u00e1lne 135 \u00b0C za v\u0161etk\u00fdch prev\u00e1dzkov\u00fdch podmienok vr\u00e1tane maxim\u00e1lnej teploty okolia a nepretr\u017eitej prev\u00e1dzky pri plnom za\u0165a\u017een\u00ed. To zabezpe\u010duje minim\u00e1lny bezpe\u010dnostn\u00fd faktor 55 \u00b0C pod vrstvou p\u0161eni\u010dnej m\u00faky MIT 190 \u00b0C (pri h\u013abke vrstvy prachu 5 mm) a ove\u013ea vy\u0161\u0161\u00ed bezpe\u010dnostn\u00fd faktor pod teplotou vznietenia oblaku 380 \u00b0C.<\/p>\n

\n
Pre\u010do je \u0161tandardn\u00e1 teplota povrchu motora neprijate\u013en\u00e1 vo fr\u00e9zovac\u00edch miestnostiach<\/div>\n
\n
\n
\u0160tandardn\u00fd motor s kryt\u00edm IP54 pri plnom za\u0165a\u017een\u00ed:<\/div>\n
Menovit\u00e1 teplota vinutia: Trieda F \u2192 155 \u00b0C
\nTeplota r\u00e1mu: 80\u2013110 \u00b0C pri menovitom za\u0165a\u017een\u00ed
\nVrstva m\u00faky sa hromad\u00ed na r\u00e1me motora
\nTeplota r\u00e1mu pri miernom pre\u0165a\u017een\u00ed: 120\u2013150 \u00b0C
\nP\u0161eni\u010dn\u00e1 m\u00faka MIT s h\u013abkou 5 mm: 190 \u00b0C
\nBezpe\u010dnostn\u00e1 rezerva: iba 40 \u2013 70 \u00b0C \u2013 nedostato\u010dn\u00e1<\/span><\/div>\n<\/div>\n
\n
Certifik\u00e1cia YB2 T135\u00b0C v rovnakej miestnosti:<\/div>\n
Maxim\u00e1lna povrchov\u00e1 teplota: 135 \u00b0C pri akomko\u013evek za\u0165a\u017een\u00ed
\nVrstva m\u00faky MIT: 190 \u00b0C
\nBezpe\u010dnostn\u00e1 rezerva: 55 \u00b0C
\nOchrana pred pre\u0165a\u017een\u00edm: PTC termistory vypn\u00fa motor pred dosiahnut\u00edm 135 \u00b0C
\nOchrana pred prachom: IP55 zabra\u0148uje vniknutiu prachu do vn\u00fatra motora
\nV s\u00falade s po\u017eiadavkami IEC 60079-31 a EN ATEX<\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

5. Mo\u017enosti certifik\u00e1cie motorov pre z\u00f3ny m\u00fa\u010dneho prachu<\/h2>\n
\n
\n
Ex t IIIB T135 \u2013 Motor chr\u00e1nen\u00fd pred prachom<\/div>\n

Ex t (prachotesn\u00fd kryt) je \u0161tandardn\u00fd typ certifik\u00e1cie pre motory v pra\u0161n\u00fdch z\u00f3nach. Motor Ex t m\u00e1 krytie IP6X (prachotesn\u00fd), ktor\u00e9 zabra\u0148uje vniknutiu prachu do motora a je testovan\u00fd a certifikovan\u00fd na obmedzenie maxim\u00e1lnej povrchovej teploty na stanoven\u00fa triedu T (T135 pre aplik\u00e1cie v mlynoch na m\u00faku). Pr\u00edstup Ex t je jednoduch\u0161\u00ed a \u013eah\u0161\u00ed ako oh\u0148ovzdorn\u00fd Ex d a je najbe\u017enej\u0161ou \u0161pecifik\u00e1ciou pre nov\u00e9 in\u0161tal\u00e1cie motorov v mlynoch na m\u00faku. Motor nemus\u00ed by\u0165 odoln\u00fd vo\u010di v\u00fdbuchu a vn\u00fatorn\u00e9mu vznieteniu, preto\u017ee vo vn\u00fatri motora sa nenach\u00e1dza \u017eiadny hor\u013eav\u00fd plyn \u2013 nebezpe\u010denstvo predstavuje v\u00fdlu\u010dne vonkaj\u0161\u00ed prach a krytie IP6X a povrchov\u00fd limit T135 s\u00fa dve kontroly, ktor\u00e9 eliminuj\u00fa riziko vznietenia.<\/p>\n<\/div>\n

\n
Ex d IIB T4 (plynovo nehor\u013eav\u00e9) v prachov\u00fdch z\u00f3nach<\/div>\n

Plynov\u00fd motor Ex d IIB T4 sa m\u00f4\u017ee pou\u017ei\u0165 aj v prachovej z\u00f3ne 21 a z\u00f3ne 22 pod\u013ea normy IEC 60079-14 za predpokladu, \u017ee limit povrchovej teploty T4 (135 \u00b0C) sp\u013a\u0148a po\u017eiadavky pre \u0161pecifick\u00fd prach (pre p\u0161eni\u010dn\u00fa m\u00faku: MIT 190 \u00b0C s toleranciou 55 \u00b0C). Motor Ex d m\u00e1 krytie IP55 alebo IP65, ktor\u00e9 zabra\u0148uje vniknutiu prachu, a limit povrchovej teploty T4 je identick\u00fd s limitom T135 pre prach. T\u00e1to dvojit\u00e1 certifik\u00e1cia znamen\u00e1, \u017ee v zariadeniach, ktor\u00e9 manipuluj\u00fa s hor\u013eav\u00fdmi plynmi aj hor\u013eav\u00fdm prachom \u2013 napr\u00edklad v kombinovanom sklade obilia a z\u00e1vode na extrakciu rozp\u00fa\u0161\u0165adlom \u2013 m\u00f4\u017ee jeden typ motora (Ex d IIB T4) sp\u013a\u0148a\u0165 po\u017eiadavky plynovej z\u00f3ny 1\/2 aj prachovej z\u00f3ny 21\/22. Motor Korea Ever-Power YB2 Ex d IIB T4 je akceptovan\u00fd na in\u0161tal\u00e1ciu v prachovej z\u00f3ne 21 a z\u00f3ne 22, ako aj v plynovej z\u00f3ne 1 a z\u00f3ne 2.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

6. Korea Ever-Power YB2 pre aplik\u00e1cie v mlynoch na m\u00faku<\/h2>\n
\n
\n

Motor Korea Ever-Power YB2 Ex d IIB T4 je spr\u00e1vnou \u0161pecifik\u00e1ciou pre valcov\u00e9 miestnosti mlynov na m\u00faku, triediarne a oblasti pr\u00edjmu obilia klasifikovan\u00e9 ako z\u00f3na 21 alebo z\u00f3na 22 pod\u013ea normy IEC 60079-10-2. Liatinov\u00e9 puzdro IP55 zabra\u0148uje hromadeniu m\u00fa\u010dn\u00e9ho prachu vo vn\u00fatri motora (eliminuje re\u017eim degrad\u00e1cie vn\u00fatornej izol\u00e1cie) a certifik\u00e1cia Ex d T4 obmedzuje vonkaj\u0161iu povrchov\u00fa teplotu na 135 \u00b0C (\u010do zabezpe\u010duje minim\u00e1lny bezpe\u010dnostn\u00fd faktor 55 \u00b0C pod vrstvou p\u0161eni\u010dnej m\u00faky MIT). Motor YB2 je certifikovan\u00fd pod\u013ea noriem ATEX aj IECEx a je akceptovan\u00fd pr\u00edslu\u0161n\u00fdmi org\u00e1nmi pre v\u00fdbuch prachu v E\u00da, Spojenom kr\u00e1\u013eovstve, Austr\u00e1lii a na exportn\u00fdch trhoch po celom svete. Kompletn\u00fd rad YB2 je dostupn\u00fd v... sekcia motorov odoln\u00fdch vo\u010di v\u00fdbuchu<\/a>.<\/p>\n<\/div>\n

\n
\n
YB2 \u2014 \u0160pecifik\u00e1cia mlyna na m\u00faku<\/div>\n\n\n\n\n\n\n\n\n\n\n
Certifik\u00e1cia<\/td>\nATEX + IECEx: Ex d IIB T4<\/td>\n<\/tr>\n
Vhodnos\u0165 pre pra\u0161n\u00fa z\u00f3nu<\/td>\nZ\u00f3na 21 a z\u00f3na 22<\/td>\n<\/tr>\n
Limit povrchovej teploty<\/td>\nT4 \u2261 T135 \u00b0C max.<\/td>\n<\/tr>\n
Skupina prachu<\/td>\nIIIA a IIIB (nie IIIC)<\/td>\n<\/tr>\n
Kryt<\/td>\nLiatina s IP55<\/td>\n<\/tr>\n
Rozsah v\u00fdkonu<\/td>\n0,55 \u2013 200 kW<\/td>\n<\/tr>\n
Bezpe\u010dnos\u0165 MIT z m\u00faky<\/td>\n55 \u00b0C pod vrstvou MIT<\/td>\n<\/tr>\n
Tepeln\u00e1 ochrana<\/td>\nPTC termistory (odpor\u00fa\u010dan\u00e9)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

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7. Oblasti pou\u017eitia mlynov na m\u00faku a spracovania obilia<\/h2>\n
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Pohon valcov\u00e9ho mlyna (z\u00f3na 21)<\/div>\n

Pohonn\u00e9 motory valcov\u00fdch mlynov na p\u0161eni\u010dn\u00e9 bobule v mlynskej hale s\u00fa v z\u00f3ne 21 do 1 m od vstupu a v\u00fdstupu mlyna. YB2 4-p\u00f3lov\u00fd 11 a\u017e 55 kW, IP55, Ex d IIB T4. Pre \u0161tart mlyna pri za\u0165a\u017een\u00ed je potrebn\u00fd vysok\u00fd rozbehov\u00fd kr\u00fatiaci moment. Pre mlyny s v\u00fdkonom nad 22 kW sa odpor\u00fa\u010da soft\u0161tart\u00e9r na obmedzenie rozbehov\u00e9ho pr\u00fadu a prechodov\u00e9ho nap\u00e4tia reme\u0148a.<\/p>\n<\/div>\n

\n
Pohon triedi\u010da (z\u00f3na 21)<\/div>\n

Pohonn\u00fd motor r\u00e1mu triedi\u010da a pohony dopravn\u00edka triedi\u010da v triediacej miestnosti. YB2 4-p\u00f3lov\u00fd 0,75 a\u017e 5,5 kW. R\u00e1m triedi\u010da po\u010das prev\u00e1dzky vibruje \u2013 mont\u00e1\u017e motora mus\u00ed pou\u017e\u00edva\u0165 antivibra\u010dn\u00e9 izol\u00e1tory, aby sa zabr\u00e1nilo \u00fanave upev\u0148ovac\u00edch prvkov motora v d\u00f4sledku neust\u00e1leho vibra\u010dn\u00e9ho za\u0165a\u017eenia r\u00e1mu triedi\u010da.<\/p>\n<\/div>\n

\n
Pohon kore\u010dkov\u00e9ho elev\u00e1tora (z\u00f3na 21\/22)<\/div>\n

Hlavov\u00e9 motory pohonu kore\u010dkov\u00e9ho elev\u00e1tora na vertik\u00e1lnu dopravu obilia a m\u00faky. Spodok (p\u00e4ta) kore\u010dkov\u00e9ho elev\u00e1tora je vo vn\u00fatri z\u00f3na 20; okolie je z\u00f3na 21. Motor je typicky namontovan\u00fd v hlave (hore) v z\u00f3ne 21 alebo z\u00f3ne 22. YB2 4-p\u00f3lov\u00fd 3,0 a\u017e 30 kW. Povinn\u00e9 zariadenie proti sp\u00e4tn\u00e9mu chodu na pohone elev\u00e1tora.<\/p>\n<\/div>\n

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Pohon z\u00e1vitovkov\u00e9ho dopravn\u00edka (z\u00f3na 22)<\/div>\n

Horizont\u00e1lny z\u00e1vitovkov\u00fd dopravn\u00edk na prepravu m\u00faky a krupice medzi sekciami mlyna. V\u0161eobecn\u00e1 plocha mlynskej plochy je z\u00f3na 22. YB2 4-p\u00f3lov\u00fd 1,5 a\u017e 15 kW sp\u00e1rovan\u00fd s NMRV alebo radovou \u0161pir\u00e1lovou prevodovkou. \u0160pecifik\u00e1cia YB2 Ex d T4 pokr\u00fdva po\u017eiadavky na prach z\u00f3ny 22.<\/p>\n<\/div>\n<\/div>\n

\n
\n

\"Pohon<\/p>\n

Manipul\u00e1cia s obil\u00edm<\/div>\n<\/div>\n
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\"Presnos\u0165<\/p>\n

Kryt Ex d<\/div>\n<\/div>\n
\n

\"Certifik\u00e1cia<\/p>\n

Certifik\u00e1cia ATEX<\/div>\n<\/div>\n
\n

\"Glob\u00e1lni<\/p>\n

Glob\u00e1lni z\u00e1kazn\u00edci<\/div>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

8. \u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n
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\n
\n
M\u00f4\u017eem v mlyne na m\u00faku pou\u017ei\u0165 \u0161tandardn\u00fd motor s kryt\u00edm IP55, ak z motora pravidelne \u010dist\u00edm m\u00fa\u010dny prach?<\/div>\n<\/div>\n
\n

Nie. S\u00falad so smernicou pre pou\u017e\u00edvate\u013eov ATEX (1999\/92\/ES) vy\u017eaduje, aby sa zariadenia in\u0161talovan\u00e9 v klasifikovan\u00fdch z\u00f3nach vyberali a udr\u017eiavali v s\u00falade s klasifik\u00e1ciou z\u00f3ny \u2013 manu\u00e1lne \u010distenie m\u00fa\u010dneho prachu zo \u0161tandardn\u00fdch motorov t\u00fato po\u017eiadavku nesp\u013a\u0148a a hromadenie prachu medzi \u010distiacimi cyklami vytv\u00e1ra riziko v\u00fdbuchu. \u0160tandardn\u00fd motor s kryt\u00edm IP55 nie je certifikovan\u00fd pre in\u0161tal\u00e1ciu v prachovej z\u00f3ne z\u00f3ny 21 alebo z\u00f3ny 22 bez oh\u013eadu na frekvenciu \u010distenia. Riziko existuje nielen z prachu na povrchu motora, ale aj z prachu, ktor\u00fd vstupuje do motora cez krytie IP55 (ktor\u00e9 nie je prachotesn\u00e9) a hromad\u00ed sa na vinut\u00ed, \u010d\u00edm zvy\u0161uje teplotu vinutia. Iba motor s certifik\u00e1tom ATEX s prachotesn\u00fdm krytom IP6X a limitom povrchovej teploty T135 poskytuje vyhovuj\u00facu ochranu pre in\u0161tal\u00e1ciu v z\u00f3ne 21 a z\u00f3ne 22 v mlynoch na m\u00faku.<\/p>\n<\/div>\n<\/div>\n

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\n
Kancel\u00e1ria, baliare\u0148 a nakladacia rampa n\u00e1\u0161ho mlyna sa nach\u00e1dzaj\u00fa v tej istej budove ako mlyn\u00e1rska hala. Potrebuj\u00fa v\u0161etky priestory motory pre z\u00f3nu 21 alebo z\u00f3nu 22?<\/div>\n<\/div>\n
\n

Nie. Klasifik\u00e1cia z\u00f3n sa vz\u0165ahuje iba na tie oblasti, kde s\u00fa mo\u017en\u00e9 koncentr\u00e1cie v\u00fdbu\u0161n\u00e9ho prachu \u2013 nevz\u0165ahuje sa automaticky na cel\u00fa budovu. Mlyn\u00e1rska hala, triediare\u0148 a oblasti okolo zariaden\u00ed na manipul\u00e1ciu s m\u00fakou s\u00fa zvy\u010dajne z\u00f3nou 21 alebo z\u00f3nou 22. Baliaca oblas\u0165, sklad hotov\u00fdch v\u00fdrobkov a kancel\u00e1rie, kde m\u00fa\u010dny prach nem\u00f4\u017ee dosiahnu\u0165 v\u00fdbu\u0161n\u00e9 koncentr\u00e1cie za norm\u00e1lnych alebo predv\u00eddate\u013en\u00fdch abnorm\u00e1lnych podmienok, s\u00fa zvy\u010dajne neklasifikovan\u00e9 (\u201ebezpe\u010dn\u00e1 oblas\u0165\u201c). Hranica medzi mlyn\u00e1rskou miestnos\u0165ou a kancel\u00e1riou alebo baliacou oblas\u0165ou v\u0161ak mus\u00ed by\u0165 starostlivo presk\u00faman\u00e1 v dokumente o ochrane pred v\u00fdbuchom \u2013 ak sa m\u00fa\u010dny prach m\u00f4\u017ee \u0161\u00edri\u0165 cez otvoren\u00e9 dvere alebo neglazovan\u00fa prie\u010dku z mlyn\u00e1rskej miestnosti do baliacej oblasti, baliacu oblas\u0165 m\u00f4\u017ee by\u0165 potrebn\u00e9 klasifikova\u0165 ako z\u00f3nu 22. Nakladacia rampa, kde sa plnia cisterny na m\u00faku s ve\u013ek\u00fdm mno\u017estvom, je zvy\u010dajne z\u00f3na 21 pri vstupnom pripojen\u00ed cisterny a z\u00f3na 22 v oblasti nakladacej rampy vo v\u0161eobecnosti. Pred \u0161pecifik\u00e1ciou typov motorov si nechajte vypracova\u0165 dokument o klasifik\u00e1cii z\u00f3n kompetentnou osobou (kvalifikovan\u00fdm \u0161pecialistom na v\u00fdbuch prachu) pre va\u0161e konkr\u00e9tne usporiadanie zariadenia.<\/p>\n<\/div>\n<\/div>\n

\n
\n
Spracov\u00e1va sa cukrov\u00fd prach v cukr\u00e1rni rovnako ako m\u00fa\u010dny prach z h\u013eadiska \u0161pecifik\u00e1cie motora?<\/div>\n<\/div>\n
\n

\u00c1no \u2013 cukrov\u00fd prach (sachar\u00f3za) je tie\u017e klasifikovan\u00fd ako nevodiv\u00fd hor\u013eav\u00fd prach skupiny IIIB s minim\u00e1lnou teplotou vznietenia pribli\u017ene 360 \u200b\u200b\u00b0C (oblak) a 320 \u00b0C (vrstva pri 5 mm). Po\u017eiadavky na klasifik\u00e1ciu z\u00f3n a certifik\u00e1ciu motorov pre oblasti manipul\u00e1cie s cukrom v cukr\u00e1r\u0148ach s\u00fa identick\u00e9 s po\u017eiadavkami mlynov na m\u00faku: z\u00f3na 21 okolo zdrojov prachu, z\u00f3na 22 vo v\u0161eobecn\u00fdch v\u00fdrobn\u00fdch priestoroch a motory musia by\u0165 Ex t IIIB T135 alebo ekvivalentn\u00e9 (napr\u00edklad YB2 Ex d IIB T4) vo v\u0161etk\u00fdch klasifikovan\u00fdch z\u00f3nach. Kakaov\u00fd pr\u00e1\u0161ok, su\u0161en\u00e9 mlieko v pr\u00e1\u0161ku a in\u00fd potravin\u00e1rsky prach s podobn\u00fdmi v\u00fdbu\u0161n\u00fdmi vlastnos\u0165ami vy\u017eaduj\u00fa rovnak\u00fa \u0161pecifik\u00e1ciu motora. Potvr\u010fte \u0161pecifick\u00e9 parametre prachu pre ka\u017ed\u00fd prach vo va\u0161om zariaden\u00ed pomocou dokumentu o klasifik\u00e1cii nebezpe\u010dn\u00e9ho prostredia.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n
<\/div>\n

 <\/p>\n

\n
Korea Ever-Power \u00b7 S\u00e9ria YB2 \u00b7 Motor ATEX pre z\u00f3nu m\u00fa\u010dneho prachu<\/div>\n

Potrebujete certifikovan\u00e9 motory pre v\u00e1\u0161 mlyn alebo obilninu?<\/h2>\n

Korea Ever-Power YB2: ATEX + IECEx Ex d IIB T4, povrchov\u00fd limit T135 \u00b0C, IP55, 0,55 \u2013 200 kW. Schv\u00e1len\u00e9 pre aplik\u00e1cie s prachom v z\u00f3ne 21 a z\u00f3ne 22, ako je m\u00faka, obilie, \u0161krob a cukrov\u00fd prach.<\/p>\n

Zobrazi\u0165 sortiment YB2 v nev\u00fdbu\u0161nom preveden\u00ed<\/a><\/p>\n<\/div>\n<\/div>\n

Upravil Cxm<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

Korea Ever-Power \u00b7 YB2 Series \u00b7 Flour Mill Dust Explosion Drive Guide Explosion-Proof Motor for Flour Mill and Grain Processing: Dust Explosion Zone 21 \/ Zone 22 Guide Flour dust, grain dust, and starch are classified as combustible dusts with minimum ignition energies below 30 mJ \u2014 lower than many flammable solvents. A flour dust […]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[28],"tags":[],"class_list":["post-240","post","type-post","status-publish","format-standard","hentry","category-industrial-electric-motor"],"_links":{"self":[{"href":"https:\/\/industrialelectricmotor.net\/sk\/wp-json\/wp\/v2\/posts\/240","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/industrialelectricmotor.net\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/industrialelectricmotor.net\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/industrialelectricmotor.net\/sk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/industrialelectricmotor.net\/sk\/wp-json\/wp\/v2\/comments?post=240"}],"version-history":[{"count":1,"href":"https:\/\/industrialelectricmotor.net\/sk\/wp-json\/wp\/v2\/posts\/240\/revisions"}],"predecessor-version":[{"id":242,"href":"https:\/\/industrialelectricmotor.net\/sk\/wp-json\/wp\/v2\/posts\/240\/revisions\/242"}],"wp:attachment":[{"href":"https:\/\/industrialelectricmotor.net\/sk\/wp-json\/wp\/v2\/media?parent=240"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/industrialelectricmotor.net\/sk\/wp-json\/wp\/v2\/categories?post=240"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/industrialelectricmotor.net\/sk\/wp-json\/wp\/v2\/tags?post=240"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}