{"id":147,"date":"2026-07-08T08:45:37","date_gmt":"2026-07-08T08:45:37","guid":{"rendered":"https:\/\/industrialelectricmotor.net\/?p=147"},"modified":"2026-07-08T08:45:37","modified_gmt":"2026-07-08T08:45:37","slug":"how-to-select-the-right-electric-motor","status":"publish","type":"post","link":"https:\/\/industrialelectricmotor.net\/sk\/how-to-select-the-right-electric-motor\/","title":{"rendered":"Ako vybra\u0165 spr\u00e1vny elektromotor"},"content":{"rendered":"
\n
\n
\n
\n

Sprievodca v\u00fdberom motora v Koreji<\/span><\/p>\n

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

Ako vybra\u0165 spr\u00e1vny elektromotor
\npre va\u0161u \u017eiados\u0165<\/span><\/h1>\n

V\u00fdber nespr\u00e1vneho motora je jednou z naj\u010dastej\u0161\u00edch a najn\u00e1kladnej\u0161\u00edch ch\u00fdb pri kon\u0161trukcii priemyseln\u00fdch strojov. T\u00e1to pr\u00edru\u010dka pre v\u00fdber motora prech\u00e1dza v\u0161etk\u00fdmi d\u00f4le\u017eit\u00fdmi krit\u00e9riami \u2013 typom za\u0165a\u017eenia, pracovn\u00fdm cyklom, triedou \u00fa\u010dinnosti, stup\u0148om ochrany, mont\u00e1\u017eou a regul\u00e1ciou ot\u00e1\u010dok \u2013 aby ste hne\u010f na prv\u00fdkr\u00e1t dosiahli spr\u00e1vnu \u0161pecifik\u00e1ciu.<\/p>\n

Anal\u00fdza kr\u00fatiaceho momentu<\/span>
\nPracovn\u00fd cyklus S1\u2013S9<\/span>
\nIE2 \/ IE3 \/ IE4<\/span>
\nIP44 \u2013 IP69K<\/span>
\nKompatibilita s meni\u010dmi frekvencie<\/span><\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n
\n
Krok 1<\/div>\n
Definujte za\u0165a\u017eenie<\/div>\n<\/div>\n
\n
Krok 2<\/div>\n
Vypo\u010d\u00edtajte v\u00fdkon<\/div>\n<\/div>\n
\n
Krok 3<\/div>\n
Vyberte r\u00fdchlos\u0165<\/div>\n<\/div>\n
\n
Krok 4<\/div>\n
Ochrana pri v\u00fdbere<\/div>\n<\/div>\n
\n
Krok 5<\/div>\n
Overi\u0165 \u00fa\u010dinnos\u0165<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\"Sprievodca<\/p>\n
Motory s\u00e9rie Ever-Power Y2 od spolo\u010dnosti Korea \u2013 spr\u00e1vny v\u00fdber motora ur\u010duje n\u00e1klady na energiu, spo\u013eahlivos\u0165 a frekvenciu \u00fadr\u017eby po\u010das 20 a\u017e 30 rokov \u017eivotnosti.<\/div>\n<\/div>\n

<\/p>\n

\n
Obsah<\/div>\n
1. Pochopenie typu za\u0165a\u017eenia<\/a>
\n2. V\u00fdpo\u010det v\u00fdkonu motora<\/a>
\n3. R\u00fdchlos\u0165, p\u00f3ly a prevody<\/a>
\n4. Pracovn\u00fd cyklus a prev\u00e1dzkov\u00fd faktor<\/a>
\n5. Prev\u00e1dzkov\u00e9 prostredie a trieda IP<\/a>
\n6. Matica v\u00fdberu typu motora<\/a>
\n7. Trieda \u00fa\u010dinnosti a n\u00e1klady na \u017eivotn\u00fd cyklus<\/a>
\n8. \u010casto kladen\u00e9 ot\u00e1zky<\/a><\/div>\n<\/div>\n

<\/p>\n

\n

1. Pochopenie typu za\u0165a\u017eenia<\/h2>\n

Prv\u00fdm krokom v procese v\u00fdberu ak\u00e9hoko\u013evek motora je charakteriz\u00e1cia poh\u00e1\u0148anej z\u00e1\u0165a\u017ee. T\u00e1 definuje po\u017eiadavky na kr\u00fatiaci moment a r\u00fdchlos\u0165 v celom prev\u00e1dzkovom rozsahu, \u010do n\u00e1sledne ur\u010duje po\u017eadovan\u00fd typ motora, v\u00fdkon, po\u010det p\u00f3lov a to, \u010di je potrebn\u00fd meni\u010d frekvencie alebo prevodovka. Existuj\u00fa tri z\u00e1kladn\u00e9 kateg\u00f3rie z\u00e1\u0165a\u017ee.<\/p>\n

\n
\n
Kon\u0161tantn\u00e9 kr\u00fatiace momenty<\/div>\n

Kr\u00fatiaci moment zost\u00e1va pribli\u017ene kon\u0161tantn\u00fd bez oh\u013eadu na r\u00fdchlos\u0165. Po\u017eadovan\u00fd v\u00fdkon motora sa preto zvy\u0161uje \u00famerne s r\u00fdchlos\u0165ou. Pr\u00edklady: dopravn\u00edky, objemov\u00e9 \u010derpadl\u00e1, kompresory, mie\u0161a\u010dky a zdv\u00edhacie zariadenia. Motor mus\u00ed by\u0165 dimenzovan\u00fd tak, aby poskytoval dostato\u010dn\u00fd kr\u00fatiaci moment pri najni\u017e\u0161\u00edch prev\u00e1dzkov\u00fdch ot\u00e1\u010dkach, a to aj po\u010das rozbehu pri plnom za\u0165a\u017een\u00ed.<\/p>\n

P = T \u00d7 n \u00f7 9550 (kde T je kon\u0161tantn\u00e9, P sa men\u00ed s r\u00fdchlos\u0165ou n)<\/div>\n<\/div>\n
\n
Premenliv\u00e9 kr\u00fatiace momenty (odstrediv\u00e9)<\/div>\n

Kr\u00fatiaci moment sa zvy\u0161uje s druhou mocninou ot\u00e1\u010dok; v\u00fdkon sa zvy\u0161uje s tre\u0165ou mocninou ot\u00e1\u010dok. Pr\u00edklady: odstrediv\u00e9 \u010derpadl\u00e1, ventil\u00e1tory a d\u00fachadl\u00e1. Pri 50 percent\u00e1ch menovit\u00fdch ot\u00e1\u010dok vy\u017eaduje z\u00e1\u0165a\u017e iba 25 percent menovit\u00e9ho kr\u00fatiaceho momentu a 12,5 percenta menovit\u00e9ho v\u00fdkonu. T\u00e1to charakteristika rob\u00ed z premenliv\u00e9ho kr\u00fatiaceho momentu ide\u00e1lne za\u0165a\u017eenie pre regul\u00e1ciu ot\u00e1\u010dok s frekven\u010dn\u00fdm meni\u010dom (VFD), kde je mo\u017en\u00e9 dosiahnu\u0165 ve\u013ek\u00e9 \u00faspory energie pri zn\u00ed\u017een\u00fdch po\u017eiadavk\u00e1ch na prietok.<\/p>\n

P \u221d n\u00b3 \u2014 zn\u00ed\u017eenie r\u00fdchlosti o 20% zni\u017euje spotrebu energie takmer o 50%<\/div>\n<\/div>\n
\n
Kon\u0161tantn\u00e9 za\u0165a\u017eenia<\/div>\n

V\u00fdkon zost\u00e1va kon\u0161tantn\u00fd, zatia\u013e \u010do kr\u00fatiaci moment sa so zvy\u0161uj\u00facou sa r\u00fdchlos\u0165ou zni\u017euje. Pr\u00edklady: obr\u00e1bacie stroje na kov (vretenov\u00e9 pohony), nav\u00edja\u010dky a niektor\u00e9 pohony valcovn\u00ed. V\u00fdber motora pre kon\u0161tantn\u00e9 za\u0165a\u017eenie mus\u00ed zabezpe\u010di\u0165, aby motor mohol poskytova\u0165 pln\u00fd menovit\u00fd v\u00fdkon pri najvy\u0161\u0161ej po\u017eadovanej r\u00fdchlosti a dostato\u010dn\u00fd kr\u00fatiaci moment pre silu rezania alebo nav\u00edjania pri najni\u017e\u0161ej r\u00fdchlosti v prev\u00e1dzkovom rozsahu.<\/p>\n

T = 9550 \u00d7 P \u00f7 n \u2014 kr\u00fatiaci moment kles\u00e1 so zvy\u0161uj\u00facou sa r\u00fdchlos\u0165ou pri kon\u0161tantnom v\u00fdkone<\/div>\n<\/div>\n<\/div>\n

Najprv ur\u010den\u00edm typu z\u00e1\u0165a\u017ee sa zabr\u00e1ni naj\u010dastej\u0161ej chybe pri predimenzovan\u00ed motora: v\u00fdbere motora dimenzovan\u00e9ho na rozbehov\u00fd kr\u00fatiaci moment pri odstredivom za\u0165a\u017een\u00ed, ktor\u00e9 vy\u017eaduje iba 12,5 percenta menovit\u00e9ho kr\u00fatiaceho momentu pri polovi\u010dn\u00fdch ot\u00e1\u010dkach. Predimenzovan\u00fd motor pracuje s n\u00edzkym \u00fa\u010dinn\u00edkom a zn\u00ed\u017eenou \u00fa\u010dinnos\u0165ou vo v\u00e4\u010d\u0161ine svojho prev\u00e1dzkov\u00e9ho rozsahu, \u010do zvy\u0161uje n\u00e1klady na energiu aj poplatky za jalov\u00fd v\u00fdkon.<\/p>\n<\/div>\n

<\/p>\n

\n

2. V\u00fdpo\u010det v\u00fdkonu motora<\/h2>\n

Ke\u010f je zn\u00e1ma charakteristika kr\u00fatiaceho momentu a ot\u00e1\u010dok, je mo\u017en\u00e9 vypo\u010d\u00edta\u0165 po\u017eadovan\u00fd v\u00fdkon na hriadeli motora. Po\u017eadovan\u00fd v\u00fdkon mus\u00ed by\u0165 dostato\u010dn\u00fd pre najhor\u0161\u00ed prev\u00e1dzkov\u00fd stav \u2013 zvy\u010dajne maxim\u00e1lne za\u0165a\u017eenie pri maxim\u00e1lnych ot\u00e1\u010dkach \u2013 s pou\u017eit\u00edm servisn\u00e9ho faktora pre \u0161tartovacie podmienky a zmeny za\u0165a\u017eenia.<\/p>\n

\n
Referencia v\u00fdpo\u010dtu v\u00fdkonu<\/div>\n
\n
\n
Z kr\u00fatiaceho momentu a ot\u00e1\u010dok:<\/div>\n
P (kW) = T (N\u00b7m) \u00d7 n (ot.\/min.) \u00f7 9550<\/div>\n<\/div>\n
\n
Z prietoku a tlaku (\u010derpadl\u00e1):<\/div>\n
P (kW) = Q (m\u00b3\/s) \u00d7 \u0394p (Pa) \u00f7 (1000 \u00d7 \u03b7)<\/div>\n<\/div>\n
\n
Odpor\u00fa\u010dan\u00fd v\u00fdkon motora:<\/div>\n
P-motor = P-za\u0165a\u017eenie \u00d7 prev\u00e1dzkov\u00fd faktor \u00f7 \u03b7-pohon<\/div>\n<\/div>\n<\/div>\n<\/div>\n
\n\n\n\n\n\n\n\n\n\n
Aplik\u00e1cia<\/th>\nPo\u010diato\u010dn\u00fd prev\u00e1dzkov\u00fd faktor<\/th>\nFaktor prev\u00e1dzkovej prev\u00e1dzky<\/th>\nPozn\u00e1mky<\/th>\n<\/tr>\n<\/thead>\n
Odstrediv\u00e9 \u010derpadlo \/ ventil\u00e1tor<\/td>\n1.0<\/td>\n1,0\u20131,15<\/td>\nN\u00edzky rozbehov\u00fd kr\u00fatiaci moment; ve\u013ekos\u0165 pre maxim\u00e1lny prev\u00e1dzkov\u00fd bod<\/td>\n<\/tr>\n
P\u00e1sov\u00fd dopravn\u00edk (\u0161tart s nalo\u017een\u00edm)<\/td>\n1.5<\/td>\n1,15 \u2013 1,25<\/td>\nVysok\u00e1 zotrva\u010dnos\u0165 alebo \u0161tart so za\u0165a\u017een\u00edm vy\u017eaduje rezervu rozbehov\u00e9ho momentu<\/td>\n<\/tr>\n
Skrutkov\u00fd kompresor<\/td>\n1,5 \u2013 2,0<\/td>\n1.25<\/td>\nMo\u017en\u00fd \u0161tart bez z\u00e1\u0165a\u017ee; pou\u017eite soft\u0161tart\u00e9r alebo hviezda-trojuholn\u00edk<\/td>\n<\/tr>\n
Mie\u0161adlo \/ mie\u0161adlo<\/td>\n2,0 \u2013 2,5<\/td>\n1,25 \u2013 1,5<\/td>\nZa\u010diatok \u0161ar\u017ee s vysokou viskozitou je najhor\u0161\u00edm mo\u017en\u00fdm stavom<\/td>\n<\/tr>\n
Zdvih\u00e1k \/ \u017eeriav<\/td>\n2,0 \u2013 3,0<\/td>\n1.5<\/td>\n\u0160tartovanie s pln\u00fdm zavesen\u00fdm bremenom; pou\u017eite brzdu motora<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Po v\u00fdpo\u010dte po\u017eadovan\u00e9ho v\u00fdkonu motora zaokr\u00fahlite nahor na najbli\u017e\u0161\u00ed \u0161tandardn\u00fd menovit\u00fd v\u00fdkon IEC v s\u00e9rii (0,18, 0,25, 0,37, 0,55, 0,75, 1,1, 1,5, 2,2, 3,0, 4,0, 5,5, 7,5, 11, 15, 18,5, 22, 30, 37, 45, 55, 75, 90, 110, 132, 160, 200 kW). Vyhnite sa v\u00fdberu motora o viac ako jednu \u0161tandardn\u00fa ve\u013ekos\u0165 nad vypo\u010d\u00edtan\u00fa po\u017eadovan\u00fa hodnotu, preto\u017ee to zvy\u0161uje kapit\u00e1lov\u00e9 n\u00e1klady a zni\u017euje \u00fa\u010dinnos\u0165 pri \u010diasto\u010dnom za\u0165a\u017een\u00ed a \u00fa\u010dinn\u00edk.<\/p>\n<\/div>\n

<\/p>\n

\n

3. R\u00fdchlos\u0165, p\u00f3ly a prevody<\/h2>\n

Ot\u00e1\u010dky motora v ot\u00e1\u010dkach za min\u00fatu s\u00fa ur\u010den\u00e9 po\u010dtom magnetick\u00fdch p\u00f3lov a nap\u00e1jacou frekvenciou. Pri 50 Hz \u0161tyri \u0161tandardn\u00e9 konfigur\u00e1cie p\u00f3lov vytv\u00e1raj\u00fa tieto synchr\u00f3nne ot\u00e1\u010dky a pribli\u017en\u00e9 ot\u00e1\u010dky pri plnom za\u0165a\u017een\u00ed:<\/p>\n

\n
\n
2,900<\/div>\n
ot\u00e1\u010dky za min\u00fatu (2-p\u00f3lov\u00fd)<\/div>\n
Vysokor\u00fdchlostn\u00e9 ventil\u00e1tory, odstrediv\u00e9 \u010derpadl\u00e1, turbod\u00fachadl\u00e1. Najvy\u0161\u0161\u00ed \u0161pecifick\u00fd v\u00fdkon na ve\u013ekos\u0165 r\u00e1mu.<\/div>\n<\/div>\n
\n
1,450<\/div>\n
ot\u00e1\u010dky za min\u00fatu (4-p\u00f3lov\u00fd)<\/div>\n
Najbe\u017enej\u0161ie. \u010cerpadl\u00e1, kompresory, dopravn\u00edky, obr\u00e1bacie stroje. Najlep\u0161\u00ed pomer \u00fa\u010dinnosti a kr\u00fatiaceho momentu.<\/div>\n<\/div>\n
\n
960<\/div>\n
ot\u00e1\u010dky za min\u00fatu (6-p\u00f3lov\u00fd)<\/div>\n
Mie\u0161adl\u00e1, ve\u013ek\u00e9 ventil\u00e1tory, pomal\u00e9 dopravn\u00edky. Vy\u0161\u0161\u00ed kr\u00fatiaci moment zni\u017euje po\u017eiadavku na prevodov\u00fd pomer prevodovky.<\/div>\n<\/div>\n
\n
720<\/div>\n
ot\u00e1\u010dky za min\u00fatu (8-p\u00f3lov\u00fd)<\/div>\n
Ve\u013emi pomal\u00e9 za\u0165a\u017eenie, ve\u013ek\u00e9 mie\u0161adl\u00e1, pohony pec\u00ed. Maxim\u00e1lny kr\u00fatiaci moment na kW; najni\u017e\u0161ia hlu\u010dnos\u0165.<\/div>\n<\/div>\n<\/div>\n

Ke\u010f po\u017eadovan\u00e9 v\u00fdstupn\u00e9 ot\u00e1\u010dky nezodpovedaj\u00fa \u017eiadnym \u0161tandardn\u00fdm ot\u00e1\u010dkam motora, na zn\u00ed\u017eenie (alebo ob\u010dasn\u00e9 zv\u00fd\u0161enie) prevodov\u00e9ho pomeru medzi motorom a z\u00e1\u0165a\u017eou sa pou\u017eije prevodovka. Po\u017eadovan\u00fd prevodov\u00fd pomer je jednoducho ot\u00e1\u010dky motora vydelen\u00e9 po\u017eadovan\u00fdmi v\u00fdstupn\u00fdmi ot\u00e1\u010dkami. Napr\u00edklad dopravn\u00edk vy\u017eaduj\u00faci 28 ot.\/min zo 4-p\u00f3lov\u00e9ho motora s 1 450 ot.\/min potrebuje prevodov\u00fd pomer pribli\u017ene 52:1. To by sa typicky dosiahlo z\u00e1vitovkovou prevodovkou pre mierne kr\u00fatiace momenty alebo \u0161pir\u00e1lovou prevodovkou pre nepretr\u017eit\u00fa \u0165a\u017ek\u00fa \u200b\u200bprev\u00e1dzku pri vysokom v\u00fdkone.<\/p>\n

\n

Tip pre v\u00fdber: Ak je po\u017eadovan\u00e1 v\u00fdstupn\u00e1 r\u00fdchlos\u0165 medzi 50 a 300 ot.\/min., porovnajte celkov\u00e9 n\u00e1klady na 4-p\u00f3lov\u00fd motor s dvojstup\u0148ovou prevodovkou so 6-p\u00f3lov\u00fdm alebo 8-p\u00f3lov\u00fdm motorom s jednostup\u0148ovou prevodovkou. Druh\u00e1 mo\u017enos\u0165 \u010dasto zni\u017euje zlo\u017eitos\u0165 pohonu, po\u010det bodov \u00fadr\u017eby a celkov\u00e9 n\u00e1klady na in\u0161tal\u00e1ciu pre aplik\u00e1cie s mie\u0161adlami a dopravn\u00edkmi. Korea Ever-Power kombin\u00e1cie prevodov\u00fdch motorov<\/a> pokr\u00fdvaj\u00fa v\u0161etky \u0161tvorp\u00f3lov\u00e9 konfigur\u00e1cie sp\u00e1rovan\u00e9 so z\u00e1vitovkov\u00fdmi, \u0161pir\u00e1lov\u00fdmi a ku\u017ee\u013eo\u0161pir\u00e1lov\u00fdmi redukciami.<\/p>\n<\/div>\n<\/div>\n

<\/p>\n

\n

4. Pracovn\u00fd cyklus a prev\u00e1dzkov\u00fd faktor<\/h2>\n

Norma IEC 60034-1 definuje dev\u00e4\u0165 \u0161tandardn\u00fdch typov prev\u00e1dzky (S1 a\u017e S9), ktor\u00e9 opisuj\u00fa, ako sa v priebehu \u010dasu striedaj\u00fa doby za\u0165a\u017eenia a pokoja motora. Pracovn\u00fd cyklus ur\u010duje tepeln\u00e9 za\u0165a\u017eenie motora a priamo ovplyv\u0148uje po\u017eadovan\u00fd v\u00fdkon.<\/p>\n

\n
\n
\n
S1<\/div>\n
Nepretr\u017eit\u00e1 prev\u00e1dzka<\/div>\n<\/div>\n

Motor be\u017e\u00ed nepretr\u017eite pri kon\u0161tantnom za\u0165a\u017een\u00ed dostato\u010dne dlho na dosiahnutie tepelnej rovnov\u00e1hy. Najbe\u017enej\u0161\u00ed typ prev\u00e1dzky \u2013 \u010derpadl\u00e1, ventil\u00e1tory, kompresory, dopravn\u00edky. Motor je dimenzovan\u00fd na nepretr\u017eit\u00fa prev\u00e1dzku pri v\u00fdkone uvedenom na \u0161t\u00edtku.<\/p>\n<\/div>\n

\n
\n
S2<\/div>\n
Kr\u00e1tkodob\u00e1 slu\u017eba<\/div>\n<\/div>\n

Motor be\u017e\u00ed pri kon\u0161tantnom za\u0165a\u017een\u00ed po\u010das kr\u00e1tkeho definovan\u00e9ho obdobia (10, 30, 60 alebo 90 min\u00fat), potom sa zastav\u00ed dostato\u010dne dlho na \u00fapln\u00e9 ochladenie na okolit\u00fa teplotu. Pohony ventilov a stavidiel, preru\u0161ovan\u00e9 obr\u00e1bacie stroje. Kr\u00e1tkodobo prev\u00e1dzkov\u00e9 motory m\u00f4\u017eu ma\u0165 menovit\u00fd trval\u00fd v\u00fdkon vy\u0161\u0161\u00ed ako S1 po\u010das ich definovan\u00e9ho obdobia prev\u00e1dzky.<\/p>\n<\/div>\n

\n
\n
S3<\/div>\n
Preru\u0161ovan\u00e1 periodick\u00e1 prev\u00e1dzka<\/div>\n<\/div>\n

Motor striedavo pracuje v pevnom cykle pod z\u00e1\u0165a\u017eou a v pokoji a nikdy nedosiahne tepeln\u00fa rovnov\u00e1hu v \u017eiadnej z f\u00e1z. Cyklick\u00fd \u010dinite\u013e za\u0165a\u017eenia (CDF) je pomer \u010dasu zapnutia k celkov\u00e9mu \u010dasu cyklu. Baliace stroje, lisy a pohony v\u00fd\u0165ahov \u010dasto pracuj\u00fa v re\u017eime S3 s CDF 25 a\u017e 60 percent.<\/p>\n<\/div>\n

\n
\n
S4\u2013S8<\/div>\n
Povinnosti rozjazdu, brzdenia a zmeny r\u00fdchlosti<\/div>\n<\/div>\n

S4 zah\u0155\u0148a tepeln\u00fd vplyv rozbehu. S5 zah\u0155\u0148a brzdn\u00e9 cykly. S6 pokr\u00fdva nepretr\u017eit\u00fa prev\u00e1dzku s preru\u0161ovan\u00fdm pre\u0165a\u017een\u00edm. S7 a S8 zah\u0155\u0148aj\u00fa brzdenie motora a zmenu r\u00fdchlosti. Tieto typy prev\u00e1dzky s\u00fa relevantn\u00e9 pre aplik\u00e1cie \u017eeriavov, zdv\u00edhac\u00edch zariaden\u00ed a valcovn\u00ed, kde \u010dast\u00e9 cykly zr\u00fdchlenia a spomalenia predstavuj\u00fa dodato\u010dn\u00e9 tepeln\u00e9 nam\u00e1hanie vinutia motora.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

5. Prev\u00e1dzkov\u00e9 prostredie a trieda IP<\/h2>\n
\n
\n

Po\u017eadovan\u00fd stupe\u0148 krytia IP, triedu izol\u00e1cie a v niektor\u00fdch pr\u00edpadoch aj kon\u0161truk\u010dn\u00fd materi\u00e1l motora ur\u010duje in\u0161tala\u010dn\u00e9 prostredie. Motor in\u0161talovan\u00fd v \u010distom a suchom vn\u00fatornom prostred\u00ed m\u00f4\u017ee pou\u017e\u00edva\u0165 krytie IP44. Rovnak\u00fd motor vo vonkaj\u0161om priestore chemick\u00e9ho z\u00e1vodu vystavenom da\u017e\u010fu a prachu vy\u017eaduje krytie IP55 alebo IP65. Potravin\u00e1rske linky vystaven\u00e9 denn\u00e9mu vysokotlakov\u00e9mu l\u00fahov\u00e9mu um\u00fdvaniu vy\u017eaduj\u00fa krytie IP69K s kon\u0161trukciou z nehrdzavej\u00facej ocele.<\/p>\n

V klasifikovan\u00fdch nebezpe\u010dn\u00fdch oblastiach s hor\u013eav\u00fdmi plynmi alebo hor\u013eav\u00fdm prachom nie s\u00fa \u0161tandardn\u00e9 motory povolen\u00e9 bez oh\u013eadu na stupe\u0148 krytia IP. Certifikovan\u00e9 motory v nev\u00fdbu\u0161nom preveden\u00ed (Ex d IIB T4 pre plynov\u00e9 oblasti z\u00f3ny 1 alebo Ex t IIIB pre prachov\u00e9 oblasti z\u00f3ny 21) s\u00fa povinn\u00e9. Korea Ever-Power's Motory s\u00e9rie YB2 odoln\u00e9 vo\u010di v\u00fdbuchu<\/a> pokr\u00fdvaj\u00fa plynov\u00e9 oblasti Z\u00f3ny 1 a Z\u00f3ny 2 od 0,55 do 200 kW vo v\u0161etk\u00fdch \u0161tvorp\u00f3lov\u00fdch konfigur\u00e1ci\u00e1ch.<\/p>\n<\/div>\n

\n
\n
Sprievodca triedou IP pre prostredie<\/div>\n\n\n\n\n\n\n\n\n\n
\u017divotn\u00e9 prostredie<\/th>\nMinim\u00e1lna IP adresa<\/th>\n<\/tr>\n
\u010cist\u00e9 v interi\u00e9ri, such\u00e9<\/td>\nIP44<\/td>\n<\/tr>\n
V\u0161eobecn\u00e9 priemyseln\u00e9, pra\u0161n\u00e9<\/td>\nIP54<\/td>\n<\/tr>\n
Vonkaj\u0161ie alebo vodn\u00e9 trysky<\/td>\nIP55<\/td>\n<\/tr>\n
Om\u00fdvacie priestory<\/td>\nIP65<\/td>\n<\/tr>\n
Potravin\u00e1rske\/farmaceutick\u00e9 spracovanie<\/td>\nIP69K<\/td>\n<\/tr>\n
Oblas\u0165 s nebezpe\u010dn\u00fdm plynom (z\u00f3na 1)<\/td>\nEx d IIB<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

6. Matica v\u00fdberu typu motora<\/h2>\n

Po definovan\u00ed typu z\u00e1\u0165a\u017ee, v\u00fdkonu, ot\u00e1\u010dok, pracovn\u00e9ho cyklu a prostredia je mo\u017en\u00e9 vybra\u0165 typ motora. T\u00e1to matica zodpoved\u00e1 najbe\u017enej\u0161\u00edm po\u017eiadavk\u00e1m aplik\u00e1cie pr\u00edslu\u0161nej s\u00e9rii motorov od spolo\u010dnosti Korea Ever-Power.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n
Po\u017eiadavka<\/th>\nK\u00f3rejsk\u00e1 s\u00e9ria Ever-Power<\/th>\nK\u013e\u00fa\u010dov\u00e1 vlastnos\u0165<\/th>\n<\/tr>\n<\/thead>\n
\u0160tandardn\u00e1 nepretr\u017eit\u00e1 prev\u00e1dzka S1, \u010dist\u00fd vn\u00fatorn\u00fd priestor<\/td>\nS\u00e9ria Y2<\/td>\nIE3, IP54, 0,18 \u2013 200 kW, v\u0161etky 4-p\u00f3lov\u00e9 konfigur\u00e1cie<\/td>\n<\/tr>\n
Variabiln\u00e1 r\u00fdchlos\u0165 s frekven\u010dn\u00fdm meni\u010dom (VFD)<\/td>\nS\u00e9ria YVF2<\/td>\nExtern\u00fd ventil\u00e1tor IC416, trieda H, termistory PTC, 0,75 \u2013 200 kW<\/td>\n<\/tr>\n
S\u00fa potrebn\u00e9 dve pevn\u00e9 r\u00fdchlosti (bez frekven\u010dn\u00e9ho meni\u010da)<\/td>\nS\u00e9ria YD<\/td>\nDahlander \/ oddelen\u00e9 vinutie, p\u00f3lov\u00e9 kombin\u00e1cie 4\/2P a\u017e 12\/6P<\/td>\n<\/tr>\n
Dr\u017eanie\/polohovanie bremena<\/td>\nS\u00e9ria Y2EJ<\/td>\nIntegrovan\u00e1 pru\u017einov\u00e1 jednosmern\u00e1 brzda, \u010das zastavenia < 0,1\u20130,4 s<\/td>\n<\/tr>\n
Nebezpe\u010dn\u00e1 oblas\u0165 Z\u00f3na 1 \/ Z\u00f3na 2<\/td>\nS\u00e9ria YB2<\/td>\nEx d IIB T4, IP55, 0,55\u2013200 kW, certifikovan\u00e9 pod\u013ea IECEx \/ ATEX<\/td>\n<\/tr>\n
Denn\u00e9 um\u00fdvanie IP69K (potraviny \/ farmaceutick\u00e9 v\u00fdrobky)<\/td>\nS\u00e9ria BXG<\/td>\nNerezov\u00e1 oce\u013e 316L, IP69K, tesnenia FDA, Ra 0,8 um, trieda H<\/td>\n<\/tr>\n
Mal\u00fd v\u00fdkon (< 1 kW), hlin\u00edkov\u00fd r\u00e1m<\/td>\nS\u00e9ria YS<\/td>\n25 W \u2013 750 W, hlin\u00edkov\u00fd r\u00e1m, IP44, mo\u017enos\u0165 \u0161tartovania kondenz\u00e1torom<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

\u00dapln\u00e9 \u0161pecifik\u00e1cie produktov, tabu\u013eky modelov a aplika\u010dn\u00e9 pr\u00edru\u010dky pre ka\u017ed\u00fa s\u00e9riu n\u00e1jdete v sekcia produktov trojf\u00e1zov\u00fdch motorov<\/a>.<\/p>\n<\/div>\n

<\/p>\n

\n

7. Trieda \u00fa\u010dinnosti a n\u00e1klady na \u017eivotn\u00fd cyklus<\/h2>\n

Pri v\u00e4\u010d\u0161ine priemyseln\u00fdch motorov n\u00e1klady na energiu po\u010das 10-ro\u010dnej prev\u00e1dzkovej \u017eivotnosti \u010faleko prevy\u0161uj\u00fa po\u010diato\u010dn\u00fa k\u00fapnu cenu. Motor s v\u00fdkonom 22 kW zak\u00fapen\u00fd za 600 USD spotrebuje pribli\u017ene 480 000 kWh po\u010das 10 rokov pri plnom za\u0165a\u017een\u00ed (4 800 hod\u00edn ro\u010dne). Pri cene 0,12 USD\/kWh to predstavuje 57 600 USD n\u00e1kladov na elektrinu \u2013 96-n\u00e1sobok k\u00fapnej ceny motora. Zlep\u0161enie \u00fa\u010dinnosti z IE2 (90,9%) na IE3 (91,6%) pri 22 kW u\u0161etr\u00ed pribli\u017ene 410 kWh ro\u010dne na motor, alebo 4 100 kWh a 492 USD po\u010das 10 rokov pri cene 0,12 USD\/kWh.<\/p>\n

\n
Celkov\u00e9 n\u00e1klady na vlastn\u00edctvo po\u010das 10 rokov \u2013 motor 22 kW, 4 800 h\/rok, 0,12 USD\/kWh<\/div>\n
\n
\n
Motor IE2 (\u00fa\u010dinnos\u0165 90.9%)<\/div>\n
~57 890 USD<\/div>\n
Len n\u00e1klady na energiu; n\u00e1klady na motor ~500 USD<\/div>\n<\/div>\n
\n
Motor IE3 (efekt\u00edvny 91.6%)<\/div>\n
~57 398 USD<\/div>\n
Cena motora ~700 USD; \u00faspora energie 492 USD<\/div>\n<\/div>\n
\n
\u010cist\u00e1 \u00faspora (IE3 vs. IE2)<\/div>\n
+290 USD<\/div>\n
Po z\u00edskan\u00ed vy\u0161\u0161ej k\u00fapnej ceny IE3 za 4 roky<\/div>\n<\/div>\n<\/div>\n<\/div>\n

Pre zariadenia s ve\u013ek\u00fdm po\u010dtom motorov m\u00f4\u017ee kumulovan\u00e1 \u00faspora energie z moderniz\u00e1cie z IE2 na IE3 v r\u00e1mci 50 a\u017e 100 motorov predstavova\u0165 v\u00fdznamn\u00e9 zn\u00ed\u017eenie ro\u010dn\u00fdch prev\u00e1dzkov\u00fdch n\u00e1kladov. Nariadenie E\u00da 2019\/1781 stanovuje IE3 ako minim\u00e1lnu triedu \u00fa\u010dinnosti pre motory s v\u00fdkonom od 0,75 do 200 kW na eur\u00f3pskom trhu a mnoho \u010fal\u0161\u00edch trhov prij\u00edma ekvivalentn\u00e9 predpisy. Stanovenie IE3 ako minim\u00e1lnej triedy \u00fa\u010dinnosti pre v\u0161etky nov\u00e9 n\u00e1kupy motorov je v s\u00falade s predpismi aj z h\u013eadiska rozumnej prev\u00e1dzkovej ekonomiky.<\/p>\n<\/div>\n

<\/p>\n

\n
\"Sprievodca<\/p>\n
Pohony \u010derpadiel a HVAC<\/div>\n<\/div>\n
\"Aplik\u00e1cia<\/p>\n
Pohony textiln\u00fdch strojov<\/div>\n<\/div>\n
\"Testovanie<\/p>\n
Testovanie kvality v tov\u00e1rni<\/div>\n<\/div>\n
\"Glob\u00e1lny<\/p>\n
Glob\u00e1lna exportn\u00e1 sie\u0165<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

8. \u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n
\n
\n
\n
Je v\u017edy lep\u0161ie vybra\u0165 motor o jednu ve\u013ekos\u0165 v\u00e4\u010d\u0161\u00ed kv\u00f4li bezpe\u010dnostnej rezerve?<\/div>\n<\/div>\n
\n

Nie. Predimenzovanie motora zni\u017euje \u00fa\u010dinnos\u0165 pri \u010diasto\u010dnom za\u0165a\u017een\u00ed a s\u00fa\u010dasne aj \u00fa\u010dinn\u00edk. Motor be\u017eiaci na 50 percent menovit\u00e9ho za\u0165a\u017eenia zvy\u010dajne pracuje o 2 a\u017e 5 percentu\u00e1lnych bodov pod svojou \u0161pi\u010dkovou \u00fa\u010dinnos\u0165ou a s v\u00fdrazne zn\u00ed\u017een\u00fdm \u00fa\u010dinn\u00edkom. To zvy\u0161uje spotrebu energie a poplatky za jalov\u00fd v\u00fdkon. Spr\u00e1vny pr\u00edstup je dimenzova\u0165 motor na skuto\u010dn\u00e9 maxim\u00e1lne prev\u00e1dzkov\u00e9 za\u0165a\u017eenie s vhodn\u00fdm prev\u00e1dzkov\u00fdm s\u00fa\u010dinite\u013eom \u2013 neprid\u00e1va\u0165 \u013eubovo\u013en\u00e9 rozmerov\u00e9 rezervy nad r\u00e1mec prev\u00e1dzkov\u00e9ho s\u00fa\u010dinite\u013ea, ktor\u00fd je u\u017e zabudovan\u00fd do v\u00fdpo\u010dtu.<\/p>\n<\/div>\n<\/div>\n

\n
\n
Kedy by som mal na regul\u00e1ciu ot\u00e1\u010dok pou\u017ei\u0165 frekven\u010dn\u00fd meni\u010d namiesto v\u00fdberu in\u00e9ho po\u010dtu p\u00f3lov?<\/div>\n<\/div>\n
\n

Pou\u017eite frekven\u010dn\u00fd meni\u010d (VFD), ke\u010f: sa r\u00fdchlos\u0165 z\u00e1\u0165a\u017ee mus\u00ed plynule meni\u0165 v ur\u010ditom rozsahu (nielen medzi dvoma pevn\u00fdmi r\u00fdchlos\u0165ami), z\u00e1\u0165a\u017e je odstrediv\u00e1 (ventil\u00e1tor alebo \u010derpadlo), kde zn\u00ed\u017eenie r\u00fdchlosti VFD poskytuje ve\u013ek\u00e9 \u00faspory energie prostredn\u00edctvom kubick\u00e9ho z\u00e1kona, alebo ke\u010f je potrebn\u00fd m\u00e4kk\u00fd rozbeh na zn\u00ed\u017eenie por\u00fach nap\u00e1jania alebo mechanick\u00e9ho nam\u00e1hania pri spusten\u00ed. Zmena p\u00f3lov (viacr\u00fdchlostn\u00e9 motory s\u00e9rie YD) je spr\u00e1vnym rie\u0161en\u00edm, ke\u010f s\u00fa potrebn\u00e9 iba dve pevn\u00e9 r\u00fdchlosti, kapit\u00e1lov\u00e9 n\u00e1klady na VFD nie s\u00fa od\u00f4vodnen\u00e9 \u00fasporou energie alebo in\u0161tala\u010dn\u00e9 prostredie znemo\u017e\u0148uje pou\u017eitie elektronick\u00e9ho pohonn\u00e9ho zariadenia.<\/p>\n<\/div>\n<\/div>\n

\n
\n
Ako nadmorsk\u00e1 v\u00fd\u0161ka ovplyv\u0148uje v\u00fdber motora?<\/div>\n<\/div>\n
\n

Nad 1 000 metrov nadmorskej v\u00fd\u0161ky sa hustota vzduchu zni\u017euje, \u010d\u00edm sa zni\u017euje tepeln\u00e1 prenosov\u00e1 kapacita extern\u00e9ho ventil\u00e1tora chladiacim pr\u00fadom. Norma IEC 60034-1 vy\u017eaduje zn\u00ed\u017eenie v\u00fdkonu motora nad 1 000 m: pribli\u017ene 1-percentn\u00e9 zn\u00ed\u017eenie menovit\u00e9ho v\u00fdkonu na 100 metrov nad 1 000 m (alebo zn\u00ed\u017eenie povolenej okolitej teploty o 1 K na 100 m). V nadmorskej v\u00fd\u0161ke 2 000 m mus\u00ed by\u0165 motor zn\u00ed\u017een\u00fd na 90 percent jeho menovit\u00e9ho v\u00fdkonu uveden\u00e9ho na \u0161t\u00edtku s hladinou mora, \u010do znamen\u00e1, \u017ee motor s v\u00fdkonom 15 kW by nemal by\u0165 za\u0165a\u017een\u00fd viac ako 13,5 kW. Pri in\u0161tal\u00e1ci\u00e1ch vo vysok\u00fdch nadmorsk\u00fdch v\u00fd\u0161kach uve\u010fte pri objedn\u00e1vke nadmorsk\u00fa v\u00fd\u0161ku in\u0161tal\u00e1cie a spolo\u010dnos\u0165 Korea Ever-Power potvrd\u00ed, \u010di sa zn\u00ed\u017eenie v\u00fdkonu vz\u0165ahuje na dan\u00fd pr\u00edpad.<\/p>\n<\/div>\n<\/div>\n

\n
\n
Ak\u00fd je rozdiel medzi servisn\u00fdm faktorom motora a servisn\u00fdm faktorom aplik\u00e1cie pou\u017e\u00edvan\u00fdm pri dimenzovan\u00ed?<\/div>\n<\/div>\n
\n

Servisn\u00fd faktor motora (SF) uveden\u00fd na \u0161t\u00edtku je multiplik\u00e1tor, ktor\u00fd ud\u00e1va, o ko\u013eko viac ako je v\u00fdkon uveden\u00fd na \u0161t\u00edtku, m\u00f4\u017ee motor nepretr\u017eite pracova\u0165 bez po\u0161kodenia \u2013 zvy\u010dajne 1,0 alebo 1,15 pre \u0161tandardn\u00e9 motory IEC. Servisn\u00fd faktor aplik\u00e1cie pou\u017e\u00edvan\u00fd pri v\u00fdpo\u010dtoch dimenzovania motora je samostatn\u00fd multiplik\u00e1tor aplikovan\u00fd na vypo\u010d\u00edtan\u00fd v\u00fdkon z\u00e1\u0165a\u017ee, ktor\u00fd zoh\u013eadn\u00ed rozbehov\u00fd kr\u00fatiaci moment, zmeny za\u0165a\u017eenia a bezpe\u010dnostn\u00fa rezervu pred v\u00fdberom \u010fal\u0161ej \u0161tandardnej ve\u013ekosti motora. Ide o dva nez\u00e1visl\u00e9 koncepty: motor s menovit\u00fdm v\u00fdkonom SF 1,0 zvolen\u00fd s servisn\u00fdm faktorom aplik\u00e1cie 1,25 znamen\u00e1, \u017ee ste vybrali motor o 25 percent v\u00e4\u010d\u0161\u00ed, ako je vypo\u010d\u00edtan\u00e1 po\u017eiadavka na nepretr\u017eit\u00e9 za\u0165a\u017eenie.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n
<\/div>\n

 <\/p>\n

\n
Korea Ever-Power \u00b7 Podpora v\u00fdberu motora<\/div>\n

Potrebujete pom\u00f4c\u0165 s v\u00fdberom spr\u00e1vneho motora?<\/h2>\n

In\u017einiersky t\u00edm spolo\u010dnosti Korea Ever-Power kontroluje po\u017eiadavky na v\u00fdber motorov pre \u010derpadl\u00e1, ventil\u00e1tory, dopravn\u00edky, mie\u0161adl\u00e1, kompresory a \u0161peci\u00e1lne pohony v r\u00e1mci cel\u00e9ho produktov\u00e9ho radu Y2, YD, YVF2, Y2EJ, YB2 a BXG.<\/p>\n

Prehliada\u0165 sortiment motorov<\/a><\/p>\n<\/div>\n<\/div>\n

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

Korea Ever-Power \u00b7 Motor Selection Guide How to Select the Right Electric Motor for Your Application Choosing the wrong motor is one of the most common and costly mistakes in industrial machine design. This motor selection guide walks through every criterion that matters \u2014 load type, duty cycle, efficiency class, protection rating, mounting, and speed […]<\/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-147","post","type-post","status-publish","format-standard","hentry","category-industrial-electric-motor"],"_links":{"self":[{"href":"https:\/\/industrialelectricmotor.net\/sk\/wp-json\/wp\/v2\/posts\/147","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=147"}],"version-history":[{"count":2,"href":"https:\/\/industrialelectricmotor.net\/sk\/wp-json\/wp\/v2\/posts\/147\/revisions"}],"predecessor-version":[{"id":150,"href":"https:\/\/industrialelectricmotor.net\/sk\/wp-json\/wp\/v2\/posts\/147\/revisions\/150"}],"wp:attachment":[{"href":"https:\/\/industrialelectricmotor.net\/sk\/wp-json\/wp\/v2\/media?parent=147"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/industrialelectricmotor.net\/sk\/wp-json\/wp\/v2\/categories?post=147"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/industrialelectricmotor.net\/sk\/wp-json\/wp\/v2\/tags?post=147"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}