{"id":264,"date":"2026-07-10T06:04:44","date_gmt":"2026-07-10T06:04:44","guid":{"rendered":"https:\/\/industrialelectricmotor.net\/?p=264"},"modified":"2026-07-10T06:04:44","modified_gmt":"2026-07-10T06:04:44","slug":"three-phase-motor-for-centrifugal-pump","status":"publish","type":"post","link":"https:\/\/industrialelectricmotor.net\/sk\/three-phase-motor-for-centrifugal-pump\/","title":{"rendered":"Trojf\u00e1zov\u00fd motor pre odstrediv\u00e9 \u010derpadlo"},"content":{"rendered":"
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Korea Ever-Power \u00b7 S\u00e9ria Y2 \u00b7 Sprievodca aplik\u00e1ciou pohonu \u010derpadla<\/span><\/p>\n

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Trojf\u00e1zov\u00fd motor pre odstrediv\u00e9 \u010derpadlo:
\nSprievodca dimenzovan\u00edm, sp\u00fa\u0161\u0165an\u00edm a pracovn\u00fdm cyklom<\/span><\/h1>\n

Pohony odstrediv\u00fdch \u010derpadiel s\u00fa energeticky najn\u00e1ro\u010dnej\u0161ou aplik\u00e1ciou motorov vo v\u00e4\u010d\u0161ine priemyseln\u00fdch zariaden\u00ed a predstavuj\u00fa 25 a\u017e 40 percent celkovej spotreby elektriny motora. V\u00fdber spr\u00e1vneho trojf\u00e1zov\u00e9ho motora \u2013 zodpovedaj\u00faceho krivke \u010derpadla, sp\u00f4sobu sp\u00fa\u0161\u0165ania, klasifik\u00e1cii prev\u00e1dzky a in\u0161tala\u010dn\u00e9mu prostrediu \u2013 je z\u00e1kladom energeticky \u00fa\u010dinn\u00e9ho \u010derpacieho syst\u00e9mu. T\u00e1to pr\u00edru\u010dka pokr\u00fdva kompletn\u00fd proces v\u00fdberu motora pre pohony odstrediv\u00fdch \u010derpadiel s pou\u017eit\u00edm radu Korea Ever-Power Y2.<\/p>\n

Z\u00e1kony afinity<\/span>
\nPriamy \u0161tart vs. m\u00e4kk\u00fd \u0161tart<\/span>
\nS1 Nepretr\u017eit\u00e1 prev\u00e1dzka<\/span>
\n\u00daspora energie IE3<\/span>
\n\u010cerpacia miestnos\u0165 s kryt\u00edm IP54<\/span><\/div>\n<\/div>\n<\/div>\n

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25\u201340%<\/div>\n
Elektrina motorov pou\u017e\u00edvan\u00e1 \u010derpadlami v priemysle<\/div>\n<\/div>\n
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P \u221d n\u00b3<\/div>\n
V\u00fdkon vs. r\u00fdchlos\u0165: kubick\u00fd afinitn\u00fd z\u00e1kon<\/div>\n<\/div>\n
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S1<\/div>\n
Klasifik\u00e1cia nepretr\u017eitej prev\u00e1dzky pre v\u00e4\u010d\u0161inu \u010derpadiel<\/div>\n<\/div>\n
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IE3<\/div>\n
Po\u017eadovan\u00e1 \u00fa\u010dinnos\u0165 pre pohonn\u00e9 motory \u010derpadiel Y2<\/div>\n<\/div>\n
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Priamy p\u00e1r<\/div>\n
Flexibiln\u00e1 spojka: v\u00e4\u010d\u0161ina \u010derpadiel nem\u00e1 prevodovku<\/div>\n<\/div>\n<\/div>\n

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\"V\u00fdber<\/p>\n
Pohony odstrediv\u00fdch \u010derpadiel v \u010derpacej miestnosti technick\u00fdch zariaden\u00ed budov \u2013 motor a \u010derpadlo s\u00fa priamo spojen\u00e9 na spolo\u010dnej z\u00e1kladovej doske, pri\u010dom motor je dimenzovan\u00fd pod\u013ea po\u017eadovan\u00e9ho v\u00fdkonu hriade\u013ea \u010derpadla v projektovanom prev\u00e1dzkovom bode na krivke \u010derpadla. \u00da\u010dinnos\u0165 IE3 je k\u013e\u00fa\u010dov\u00e1 pre motory be\u017eiace 24 hod\u00edn denne, 7 dn\u00ed v t\u00fd\u017edni v technick\u00fdch zariadeniach budov a procesn\u00fdch zariadeniach.<\/div>\n<\/div>\n

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Obsah<\/div>\n
1. Afinitn\u00e9 z\u00e1kony a v\u00fdkon motora \u010derpadla<\/a>
\n2. Dimenzovanie v\u00fdkonu motora pre pohony \u010derpadiel<\/a>
\n3. Sp\u00f4sob \u0161tartovania: priamy \u0161tart, hviezda-trojuholn\u00edk, m\u00e4kk\u00fd \u0161tart<\/a>
\n4. Klasifik\u00e1cia pr\u00e1ce pre servis \u010derpadiel<\/a>
\n5. Stupe\u0148 krytia IP pre prostredie s \u010derpadlom<\/a>
\n6. \u0160pecifik\u00e1cie pohonu \u010derpadla s\u00e9rie Y2<\/a>
\n7. Pou\u017eitie pod\u013ea typu \u010derpadla<\/a>
\n8. \u010casto kladen\u00e9 ot\u00e1zky<\/a><\/div>\n<\/div>\n

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1. Afinitn\u00e9 z\u00e1kony a v\u00fdkon motora \u010derpadla<\/h2>\n

Z\u00e1kony afinity odstrediv\u00e9ho \u010derpadla opisuj\u00fa vz\u0165ah medzi ot\u00e1\u010dkami \u010derpadla, prietokom, dopravnou v\u00fd\u0161kou (tlakom) a v\u00fdkonom na hriadeli. Tieto z\u00e1kony s\u00fa z\u00e1kladom pre pochopenie toho, pre\u010do regul\u00e1cia ot\u00e1\u010dok pomocou frekven\u010dn\u00e9ho meni\u010da \u0161etr\u00ed to\u013eko energie na pohonoch odstrediv\u00e9ho \u010derpadla a pre\u010do mus\u00ed by\u0165 motor dimenzovan\u00fd pre najhor\u0161\u00ed prev\u00e1dzkov\u00fd bod na krivke \u010derpadla, a nie pre priemern\u00fd prev\u00e1dzkov\u00fd bod.<\/p>\n

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Z\u00e1kony afinity odstrediv\u00e9ho \u010derpadla<\/div>\n
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Prietok (Q):<\/div>\n
Q\u2082 = Q\u2081 \u00d7 (n\u2082 \/ n\u2081)<\/div>\n
Prietok je \u00famern\u00fd pomeru r\u00fdchlosti<\/div>\n<\/div>\n
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Hlava (V):<\/div>\n
H\u2082 = H\u2081 \u00d7 (n\u2082 \/ n\u2081)\u00b2<\/div>\n
Hlava je \u00famern\u00e1 druhej mocnine r\u00fdchlosti<\/div>\n<\/div>\n
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V\u00fdkon (P):<\/div>\n
P\u2082 = P\u2081 \u00d7 (n\u2082 \/ n\u2081)\u00b3<\/div>\n
V\u00fdkon sa men\u00ed ako KOLO r\u00fdchlosti \u2014 r\u00fdchlos\u0165 80% = v\u00fdkon 51,2%<\/div>\n<\/div>\n<\/div>\n<\/div>\n

Z\u00e1kon kubick\u00e9ho v\u00fdkonu je d\u00f4vodom, pre\u010do regul\u00e1cia ot\u00e1\u010dok pomocou frekven\u010dn\u00e9ho meni\u010da (VFD) na odstrediv\u00fdch \u010derpadl\u00e1ch prin\u00e1\u0161a ve\u013ek\u00e9 \u00faspory energie. \u010cerpadlo be\u017eiace pri menovit\u00fdch ot\u00e1\u010dkach 80% dod\u00e1va menovit\u00fd prietok 80%, ale spotrebuje iba 80\u00b3 = 51,2% menovit\u00e9ho v\u00fdkonu. Pre motor \u010derpadla s v\u00fdkonom 22 kW be\u017eiaci pri ot\u00e1\u010dkach 80% po\u010das 6 000 hod\u00edn ro\u010dne pri spotrebe $0,13\/kWh je ro\u010dn\u00e1 \u00faspora v porovnan\u00ed s regul\u00e1ciou \u0161krtiacou klapkou pri pln\u00fdch ot\u00e1\u010dkach pribli\u017ene 22 \u00d7 (1\u20130,512) \u00d7 6 000 \u00d7 0,13 = $8 400 ro\u010dne.<\/p>\n<\/div>\n

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2. Dimenzovanie v\u00fdkonu motora pre pohony \u010derpadiel<\/h2>\n

V\u00fdkon na hriadeli motora potrebn\u00fd na pohon odstrediv\u00e9ho \u010derpadla sa ur\u010duje ako hydraulick\u00fd v\u00fdkon \u010derpadla (prietok \u00d7 dopravn\u00e1 v\u00fd\u0161ka \u00d7 hustota kvapaliny) vydelen\u00fd hydraulickou \u00fa\u010dinnos\u0165ou \u010derpadla v projektovanom prev\u00e1dzkovom bode. Pripo\u010d\u00edtajte prev\u00e1dzkov\u00fd faktor, ktor\u00fd zoh\u013eadn\u00ed prev\u00e1dzku mimo bodu najvy\u0161\u0161ej \u00fa\u010dinnosti (BEP) a opotrebenie obe\u017en\u00e9ho kolesa na konci \u017eivotnosti.<\/p>\n

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Vzorec a pr\u00edklad v\u00fdkonu motora \u010derpadla<\/div>\n
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V\u00fdkon motora na hriadeli (kW):<\/div>\n
P-motor = (Q \u00d7 V \u00d7 \u03c1 \u00d7 g) \u00f7 (1 000 \u00d7 \u03b7-\u010derpadlo)<\/div>\n
Q = prietok (m\u00b3\/s); H = dopravn\u00e1 v\u00fd\u0161ka (m); \u03c1 = hustota kvapaliny (kg\/m\u00b3); \u03b7-\u010derpadlo = \u00fa\u010dinnos\u0165 \u010derpadla (0,60 \u2013 0,85)<\/div>\n<\/div>\n
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Pracovan\u00fd pr\u00edklad \u2013 \u010derpadlo na z\u00e1sobovanie vodou:<\/div>\n
Q = 0,05 m\u00b3\/s (180 m\u00b3\/h), H = 40 m, \u03c1 = 1 000 kg\/m\u00b3, \u03b7-\u010derpadlo = 0,72
\nP = (0,05 \u00d7 40 \u00d7 1 000 \u00d7 9,81) \u00f7 (1 000 \u00d7 0,72) = 27,25 kW
\nS faktorom prev\u00e1dzky 1,15: 27,25 \u00d7 1,15 = 31,3 kW
\n\u2192 Vyberte s\u00e9riu Y2 37 kW, 4-p\u00f3lov\u00fd, IE3<\/strong><\/div>\n<\/div>\n<\/div>\n<\/div>\n
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Pou\u017eitie \u010derpadla<\/th>\nTypick\u00e9 \u03b7 \u010derpadla<\/th>\nFaktor slu\u017eby<\/th>\nTypick\u00fd rozsah motora<\/th>\nP\u00f3l Y2<\/th>\n<\/tr>\n<\/thead>\n
Z\u00e1sobovanie vodou v budove<\/td>\n0,65 \u2013 0,78<\/td>\n1.10<\/td>\n0,75 \u2013 30 kW<\/td>\n2P alebo 4P<\/td>\n<\/tr>\n
Chladen\u00e1 voda pre HVAC<\/td>\n0,70 \u2013 0,82<\/td>\n1,10 \u2013 1,15<\/td>\n3,0 \u2013 75 kW<\/td>\n2P alebo 4P<\/td>\n<\/tr>\n
Priemyseln\u00e1 procesn\u00e1 voda<\/td>\n0,68 \u2013 0,80<\/td>\n1.15<\/td>\n1,5 \u2013 55 kW<\/td>\n2P alebo 4P<\/td>\n<\/tr>\n
Zavla\u017eovanie \/ prenos vody<\/td>\n0,62 \u2013 0,75<\/td>\n1.15<\/td>\n2,2 \u2013 90 kW<\/td>\n2P alebo 4P<\/td>\n<\/tr>\n
\u010cerpadlo na kal\/odpadov\u00fa vodu<\/td>\n0,55 \u2013 0,70<\/td>\n1.25<\/td>\n2,2 \u2013 75 kW<\/td>\n4P<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

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3. Met\u00f3da \u0161tartovania: priamy \u0161tart, hviezda-trojuholn\u00edk a m\u00e4kk\u00fd \u0161tart<\/h2>\n

Met\u00f3da \u0161tartovania ur\u010duje, ko\u013eko \u0161tartovacieho pr\u00fadu motor odober\u00e1 zo siete a ak\u00fd kr\u00fatiaci moment je k dispoz\u00edcii po\u010das zr\u00fdch\u013eovania. Pri odstrediv\u00fdch \u010derpadl\u00e1ch je v\u00fdber zvy\u010dajne jednoduch\u00fd, preto\u017ee za\u0165a\u017eenie \u010derpadla pri nulov\u00fdch ot\u00e1\u010dkach je takmer nulov\u00e9 (odstrediv\u00e9 \u010derpadl\u00e1 \u0161tartuj\u00fa bez z\u00e1\u0165a\u017ee proti zatvoren\u00e9mu ventilu), \u010do znamen\u00e1, \u017ee bude fungova\u0165 ak\u00e1ko\u013evek met\u00f3da \u0161tartovania, ktor\u00e1 poskytuje dostato\u010dn\u00fd kr\u00fatiaci moment na prekonanie trenia v lo\u017eisk\u00e1ch a zr\u00fdchlenie obe\u017en\u00e9ho kolesa.<\/p>\n

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DOL (priame nap\u00e1janie)<\/div>\n

\u0160tartovac\u00ed pr\u00fad 6\u20137,5 \u00d7 menovit\u00fd. Vhodn\u00e9 pre motory \u010derpadiel do pribli\u017ene 11 kW na pevnom nap\u00e1jan\u00ed, kde pokles nap\u00e4tia po\u010das \u0161tartu je pod 10% menovit\u00e9ho nap\u00e4tia. Nad 11 kW sa informujte u dod\u00e1vate\u013ea, \u010di je povolen\u00fd priamy \u0161tart. Priamy \u0161tart poskytuje maxim\u00e1lny \u0161tartovac\u00ed moment \u2013 \u200b\u200bviac ne\u017e posta\u010duj\u00faci pre \u0161tart odstrediv\u00e9ho \u010derpadla proti zatvoren\u00e9mu ventilu. Jednoduch\u00fd a lacn\u00fd \u0161tart\u00e9r; \u017eiadna \u00fadr\u017eba okrem st\u00fdka\u010da.<\/p>\n

Pou\u017eitie pre: \u010derpadl\u00e1 do 11 kW s dostato\u010dn\u00fdm nap\u00e1jan\u00edm; tam, kde nie je obmedzen\u00fd \u0161tartovac\u00ed pr\u00fad<\/div>\n<\/div>\n
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\u0160tartovanie hviezda-trojuholn\u00edk<\/div>\n

Zni\u017euje \u0161tartovac\u00ed pr\u00fad na hodnotu 33% pri priamom zapojen\u00ed a \u0161tartovac\u00ed kr\u00fatiaci moment na hodnotu 33% pri priamom zapojen\u00ed. Vhodn\u00e9 pre odstrediv\u00e9 \u010derpadl\u00e1, preto\u017ee za\u0165a\u017eovac\u00ed kr\u00fatiaci moment pri \u0161tarte je n\u00edzky. Vy\u017eaduje 6-p\u00f3lov\u00fd motor (\u0161tandard u s\u00e9rie Y2) a \u010dasov\u00e9 rel\u00e9 hviezda-trojuholn\u00edk. Prep\u00ednanie z hviezdy do trojuholn\u00edka pri pribli\u017ene 80% synchr\u00f3nnej r\u00fdchlosti sp\u00f4sobuje prechodov\u00fd jev kr\u00fatiaceho momentu a pr\u00fadu \u2013 po\u010das prep\u00ednania hviezda-trojuholn\u00edk sa uistite, \u017ee je v\u00fdtla\u010dn\u00fd ventil zatvoren\u00fd alebo \u010diasto\u010dne zatvoren\u00fd, aby ste predi\u0161li vodn\u00e9mu r\u00e1zu.<\/p>\n

Pou\u017eitie pre: \u010derpadl\u00e1 11\u201375 kW, kde je potrebn\u00e9 obmedzi\u0165 \u0161tartovac\u00ed pr\u00fad; vy\u017eaduje sa \u0161tart so zatvoren\u00fdm ventilom<\/div>\n<\/div>\n
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Soft\u0161tart\u00e9r alebo frekven\u010dn\u00fd meni\u010d<\/div>\n

M\u00e4kk\u00fd \u0161tart\u00e9r poskytuje plynul\u00fd, nastavite\u013en\u00fd n\u00e1rast kr\u00fatiaceho momentu, ktor\u00fd eliminuje tak \u0161pi\u010dkov\u00fd \u0161tartovac\u00ed pr\u00fad, ako aj vodn\u00fd r\u00e1z z r\u00fdchleho otvorenia ventilu. Frekven\u010dn\u00fd meni\u010d (VFD) poskytuje rovnak\u00fd plynul\u00fd \u0161tart a prev\u00e1dzku s premenlivou r\u00fdchlos\u0165ou \u2013 kombin\u00e1cia plynul\u00e9ho \u0161tartu a regul\u00e1cie ot\u00e1\u010dok rob\u00ed z motora VFD plus YVF2 preferovan\u00fa \u0161pecifik\u00e1ciu pre \u010derpacie syst\u00e9my nad 7,5 kW, kde je potrebn\u00e1 regul\u00e1cia prietoku. \u00dapln\u00fa pr\u00edru\u010dku o pou\u017eit\u00ed \u010derpadla s frekvenciou n\u00e1jdete v \u010dl\u00e1nku o pohone \u010derpadla s frekvenciou Korea Ever-Power YVF2.<\/p>\n

Pou\u017eitie pre: \u010derpadl\u00e1 nad 7,5 kW, kde platia pr\u00fadov\u00e9 obmedzenia alebo kde je potrebn\u00e1 regul\u00e1cia ot\u00e1\u010dok<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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4. Klasifik\u00e1cia pr\u00e1ce pre servis \u010derpadiel<\/h2>\n

V\u00e4\u010d\u0161ina aplik\u00e1ci\u00ed odstrediv\u00fdch \u010derpadiel spad\u00e1 do kateg\u00f3rie S1 (nepretr\u017eit\u00e1 prev\u00e1dzka) \u2013 \u010derpadlo be\u017e\u00ed nepretr\u017eite pri pribli\u017ene kon\u0161tantnom za\u0165a\u017een\u00ed po\u010das celej pracovnej zmeny alebo 24 hod\u00edn denne. Z tepeln\u00e9ho h\u013eadiska je to najn\u00e1ro\u010dnej\u0161ia prev\u00e1dzkov\u00e1 trieda a v\u00fdkon uveden\u00fd na \u0161t\u00edtku Y2 predstavuje maxim\u00e1lny nepretr\u017eit\u00fd v\u00fdkon pri okolitej teplote 40 \u00b0C.<\/p>\n

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S1 Nepretr\u017eit\u00fd \u2013 Typick\u00e9 pre procesn\u00e9 \u010derpadl\u00e1<\/div>\n

Obehov\u00e9 \u010derpadlo vodovodn\u00e9ho syst\u00e9mu budovy, \u010derpadlo studenej vody v syst\u00e9me HVAC, chladiaca voda pre procesy, nap\u00e1jacie \u010derpadlo kotla, po\u017eiarne \u010derpadlo v sk\u00fa\u0161obnej prev\u00e1dzke, hlavn\u00e9 \u010derpadlo zavla\u017eovania. Motor be\u017e\u00ed nepretr\u017eite pri menovitom za\u0165a\u017een\u00ed. Vo\u013eba \u00fa\u010dinnosti IE3 m\u00e1 v tejto triede prev\u00e1dzky najv\u00e4\u010d\u0161\u00ed finan\u010dn\u00fd vplyv \u2013 motor \u010derpadla IE3 s v\u00fdkonom 22 kW u\u0161etr\u00ed pribli\u017ene 1 TP4T500 a\u017e 1 TP4T900 ro\u010dne na elektrine v porovnan\u00ed s motorom IE1 pri rovnakej prev\u00e1dzke.<\/p>\n<\/div>\n

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S3 Preru\u0161ovan\u00e9 \u2013 \u010cerpadl\u00e1 na zvy\u0161ovanie tlaku<\/div>\n

Tlakov\u00e9 zvy\u0161ovacie \u010derpadl\u00e1 v technickom vybaven\u00ed budov, ktor\u00e9 sa sp\u00fa\u0161\u0165aj\u00fa a zastavuj\u00fa na z\u00e1klade sign\u00e1lu po\u017eiadavky (tlakov\u00fd sp\u00edna\u010d alebo sn\u00edma\u010d prietoku), pracuj\u00fa v preru\u0161ovanom re\u017eime S3. Motor be\u017e\u00ed 1 a\u017e 10 min\u00fat a potom sa uvo\u013en\u00ed. Pri prev\u00e1dzkovom faktore 40% m\u00f4\u017ee motor pracova\u0165 a\u017e do v\u00fdkonu 115% na svojom typovom \u0161t\u00edtku S1 bez prekro\u010denia tepeln\u00fdch limitov. \u010cast\u00e9 sp\u00fa\u0161\u0165anie v\u0161ak tie\u017e generuje teplo zo str\u00e1t pri rozbehu \u2013 overte si maxim\u00e1lny po\u010det rozbehov motora za hodinu v technickom liste Y2.<\/p>\n<\/div>\n<\/div>\n

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Pozn\u00e1mka k motoru po\u017eiarneho \u010derpadla: Motory po\u017eiarnych \u010derpadiel musia by\u0165 vybran\u00e9 pre prev\u00e1dzku so zablokovan\u00fdm rotorom (zablokovanie) \u2013 \u010derpadlo m\u00f4\u017ee by\u0165 potrebn\u00e9 be\u017ea\u0165 proti zatvoren\u00e9mu ventilu (nulov\u00fd prietok) pri plnej r\u00fdchlosti po ur\u010dit\u00fd \u010das, \u010do sp\u00f4sob\u00ed, \u017ee \u010derpadlo ohrieva cirkuluj\u00facu vodu. Motor mus\u00ed po\u010das tohto stavu zosta\u0165 v prev\u00e1dzke a nesmie sa vypn\u00fa\u0165 pri pre\u0165a\u017een\u00ed. Motory s\u00e9rie Korea Ever-Power Y2 s izol\u00e1ciou triedy F sp\u013a\u0148aj\u00fa tepeln\u00e9 po\u017eiadavky na prev\u00e1dzku po\u017eiarneho \u010derpadla po\u010das doby trvania stavu zablokovan\u00e9ho rotora \u0161pecifikovanej v norm\u00e1ch EN 12845 a NFPA 20.<\/p>\n<\/div>\n<\/div>\n

<\/p>\n

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5. Stupe\u0148 krytia IP pre prostredie \u010derpacej stanice<\/h2>\n
\n
\n
IP54 \u2013 Vn\u00fatorn\u00e1 \u010derpacia stanica<\/div>\n

\u010cist\u00e9 a\u017e mierne pra\u0161n\u00e9 vn\u00fatorn\u00e9 \u010derpacie stanice s okolitou vlhkos\u0165ou pod 90% RH, bez priameho striekania vody. \u0160tandard pre \u010derpadl\u00e1 studenej vody v budov\u00e1ch, obehov\u00e9 \u010derpadl\u00e1 HVAC a priemyseln\u00e9 \u010derpadl\u00e1 procesnej vody v uzavret\u00fdch strojovniach. \u0160tandardn\u00e1 \u0161pecifik\u00e1cia s\u00e9rie Y2 s kryt\u00edm IP54.<\/p>\n<\/div>\n

\n
IP55 \u2013 Riziko vonkaj\u0161ieho alebo opl\u00e1chnutia<\/div>\n

Vonkaj\u0161ie \u010derpacie stanice vystaven\u00e9 da\u017e\u010fu alebo vn\u00fatorn\u00e9 \u010derpacie miestnosti vystaven\u00e9 \u010disteniu hadicou alebo striekaj\u00facej vode z netesnost\u00ed v potrub\u00ed. \u010cerpacie stanice \u00fapravn\u00ed vody, zavla\u017eovacie \u010derpacie stanice a \u010derpacie priestory priemyseln\u00fdch procesn\u00fdch z\u00e1vodov vy\u017eaduj\u00fa krytie IP55. S\u00e9ria Y2 s mo\u017enos\u0165ou krytia IP55 alebo s\u00e9ria YB2 pre vonkaj\u0161iu in\u0161tal\u00e1ciu v nebezpe\u010dn\u00fdch priestoroch.<\/p>\n<\/div>\n

\n
Ex d IP55 \u2013 \u010cerpadlo do nebezpe\u010dn\u00e9ho prostredia<\/div>\n

Chemick\u00e9 z\u00e1vody, ropn\u00e9 a plynov\u00e9 zariadenia a \u010derpacie stanice na manipul\u00e1ciu s rozp\u00fa\u0161\u0165adlami v klasifikovan\u00fdch oblastiach z\u00f3ny 1 alebo z\u00f3ny 2 vy\u017eaduj\u00fa motory v nev\u00fdbu\u0161nom preveden\u00ed. \u0160tandardnou \u0161pecifik\u00e1ciou je motor s\u00e9rie Korea Ever-Power YB2 Ex d IIB T4 IP55. Skupina plynu mus\u00ed by\u0165 zhodn\u00e1 so \u0161pecifick\u00fdmi materi\u00e1lmi v klasifikovanej oblasti \u2013 IIA pre prop\u00e1n\/but\u00e1n, IIB pre etyl\u00e9n, IIC pre vod\u00edk alebo acetyl\u00e9n.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

6. S\u00e9ria Ever-Power Y2 od K\u00f3rey pre pohony \u010derpadiel<\/h2>\n
\n
\n

Rad Y2 je \u0161tandardn\u00fd motor pre pohony odstrediv\u00fdch \u010derpadiel v rade Ever-Power od spolo\u010dnosti Korea. Pre pohony \u010derpadiel s pevnou r\u00fdchlos\u0165ou poskytuje rad Y2 \u00fa\u010dinnos\u0165 IE3 za konkurencieschopn\u00fa cenu v celom rozsahu od 0,18 do 200 kW. Odstrediv\u00e9 \u010derpadl\u00e1 s\u00fa priamo spojen\u00e9 s hriade\u013eom motora pomocou pru\u017enej spojky \u2013 nie je potrebn\u00e1 \u017eiadna prevodovka, preto\u017ee \u010derpadlo a motor pracuj\u00fa s rovnakou r\u00fdchlos\u0165ou (pri 1 450 ot.\/min. alebo 2 900 ot.\/min. pre 4-p\u00f3lov\u00e9 a 2-p\u00f3lov\u00e9 motory pri 50 Hz). Kompletn\u00fd rad motorov Y2 je k dispoz\u00edcii v... sekcia produktov trojf\u00e1zov\u00fdch motorov<\/a>.<\/p>\n

Pre \u010derpacie syst\u00e9my vy\u017eaduj\u00face regul\u00e1ciu premenliv\u00e9ho prietoku spolo\u010dnos\u0165 Korea Ever-Power odpor\u00fa\u010da invertorov\u00fd motor YVF2 sp\u00e1rovan\u00fd s frekven\u010dn\u00fdm meni\u010dom (VFD). YVF2 poskytuje n\u00faten\u00fa ventil\u00e1ciu IC416 pre pln\u00fd menovit\u00fd kr\u00fatiaci moment pri zn\u00ed\u017een\u00fdch ot\u00e1\u010dkach, izol\u00e1ciu triedy H, ktor\u00e1 odol\u00e1va nap\u00e4\u0165ov\u00fdm \u0161pi\u010dk\u00e1m VFD, a termistorov\u00fa ochranu PTC pre najn\u00e1ro\u010dnej\u0161ie aplik\u00e1cie \u010derpadiel. kontaktujte technick\u00fd t\u00edm<\/a> pre podporu dimenzovania pohonu \u010derpadla s frekven\u010dn\u00fdm meni\u010dom.<\/p>\n<\/div>\n

\n
\n
S\u00e9ria Y2 \u2013 \u00dadaje o pohone \u010derpadla<\/div>\n\n\n\n\n\n\n\n\n\n\n
Rozsah v\u00fdkonu<\/td>\n0,18 \u2013 200 kW<\/td>\n<\/tr>\n
Typick\u00e9 st\u013apy<\/td>\n2P (2 900 ot.\/min.) alebo 4P (1 450 ot.\/min.)<\/td>\n<\/tr>\n
Efekt\u00edvnos\u0165<\/td>\nNorma IE3<\/td>\n<\/tr>\n
Ochrana<\/td>\n\u0160tandard IP54; mo\u017enos\u0165 IP55<\/td>\n<\/tr>\n
Povinnos\u0165<\/td>\nS1 kontinu\u00e1lny<\/td>\n<\/tr>\n
\u0160tartovac\u00ed kr\u00fatiaci moment<\/td>\n2,0\u20132,8\u00d7 menovit\u00fd v\u00fdkon (dostato\u010dn\u00fd pre \u010derpadlo)<\/td>\n<\/tr>\n
Typ spojky<\/td>\nPriama flexibiln\u00e1 spojka (bez prevodovky)<\/td>\n<\/tr>\n
Certifik\u00e1cia<\/td>\nCE, ISO 9001, IEC 60034<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

7. Pou\u017eitie pod\u013ea typu \u010derpadla<\/h2>\n
\n
\n
Z\u00e1sobovanie vodou v budov\u00e1ch<\/div>\n

Zvy\u0161ovacie tlakov\u00e9 stanice, \u010derpadl\u00e1 na z\u00e1sobovanie vodou v dom\u00e1cnostiach a protipo\u017eiarne \u010derpadl\u00e1. Dvojp\u00f3lov\u00e9 motory Y2 (2 900 ot.\/min.) s v\u00fdkonom od 0,75 do 7,5 kW, priamo pripojen\u00e9 k viacstup\u0148ov\u00fdm vertik\u00e1lnym odstrediv\u00fdm \u010derpadl\u00e1m. Prev\u00e1dzka S3 pre zvy\u0161ova\u010d tlaku, S1 pre prim\u00e1rne nap\u00e1janie. Krytie IP54 pre vn\u00fatorn\u00fa strojov\u0148u.<\/p>\n<\/div>\n

\n
Chladen\u00e1 a kondenza\u010dn\u00e1 voda HVAC<\/div>\n

Prim\u00e1rne a sekund\u00e1rne \u010derpadl\u00e1 chladiacej vody v centr\u00e1lnych syst\u00e9moch HVAC. Y2 4-p\u00f3lov\u00e9 3,0 a\u017e 75 kW, riaden\u00e9 meni\u010dom frekvencie (VFD) pre variabiln\u00fd prietok v prim\u00e1rno-sekund\u00e1rnych alebo variabiln\u00fdch prim\u00e1rnych syst\u00e9moch. Motory YVF2 s meni\u010dom frekvencie pre v\u0161etky pohony \u010derpadiel riaden\u00e9 meni\u010dom frekvencie.<\/p>\n<\/div>\n

\n
Priemyseln\u00e1 procesn\u00e1 voda<\/div>\n

Cirkul\u00e1cia chladiacej vody, servisn\u00e9 \u010derpadl\u00e1 v\u00fdmenn\u00edka tepla, chladiace slu\u010dky reaktora. Y2 4-p\u00f3lov\u00fd 2,2 a\u017e 55 kW, S1 kontinu\u00e1lny. Ak je procesn\u00e1 kvapalina koroz\u00edvna, \u0161pecifikujte nerezov\u00e9 \u010derpadlo so \u0161tandardn\u00fdm motorom Y2 \u2013 samotn\u00fd motor nie je v kontakte s kvapalinou.<\/p>\n<\/div>\n

\n
Zavla\u017eovanie a prenos vody<\/div>\n

\u010cerpadl\u00e1 na zavla\u017eovanie po\u013enohospod\u00e1rskych zariaden\u00ed, pre\u010derp\u00e1vanie vody a plnenie n\u00e1dr\u017e\u00ed. Y2 4-p\u00f3lov\u00e9 s v\u00fdkonom 5,5 a\u017e 90 kW, \u010dasto prev\u00e1dzkovan\u00e9 sez\u00f3nne s pred\u013a\u017een\u00fdmi prestojmi \u2013 dodr\u017eiavajte postup \u00fadr\u017eby pri skladovan\u00ed. IP55 pre vonkaj\u0161iu in\u0161tal\u00e1ciu. Zapojenie hviezda-trojuholn\u00edk alebo pozvo\u013en\u00fd \u0161tart pre dlh\u00e9 potrubia, aby sa zabr\u00e1nilo vodn\u00e9mu r\u00e1zu.<\/p>\n<\/div>\n<\/div>\n

\n
\n

\"Pohon<\/p>\n

\u010cerpacia miestnos\u0165 HVAC<\/div>\n<\/div>\n
\n

\"Pohon<\/p>\n

Pohon procesn\u00e9ho \u010derpadla<\/div>\n<\/div>\n
\n

\"R\u00fdchle<\/p>\n

Skladom pre r\u00fdchle dodanie<\/div>\n<\/div>\n
\n

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

Certifik\u00e1cia CE a ISO<\/div>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

8. \u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n
\n
\n
\n
Pre\u010do sa motor m\u00f4jho \u010derpadla prehrieva, ke\u010f be\u017e\u00ed s \u010diasto\u010dn\u00fdm prietokom cez \u0161krtiaci ventil?<\/div>\n<\/div>\n
\n

\u0160krtenie v\u00fdtla\u010dn\u00e9ho ventilu za \u00fa\u010delom zn\u00ed\u017eenia prietoku nezni\u017euje energiu spotrebovan\u00fa motorom \u010derpadla proporcion\u00e1lne. Pri \u010diasto\u010dne uzavretom v\u00fdtla\u010dnom ventile pracuje \u010derpadlo s vy\u0161\u0161ou v\u00fdtla\u010dnou hlavou a ni\u017e\u0161ou \u00fa\u010dinnos\u0165ou ako v bode svojej najvy\u0161\u0161ej \u00fa\u010dinnosti (BEP), \u010do znamen\u00e1, \u017ee hriade\u013e \u010derpadla absorbuje takmer rovnak\u00fd v\u00fdkon ako pri plnom prietoku, ale viac ho premie\u0148a na teplo v kvapaline namiesto u\u017eito\u010dnej tlakovej pr\u00e1ce. Motor preto odober\u00e1 pr\u00fad bl\u00edzky pln\u00e9mu za\u0165a\u017eeniu aj pri zn\u00ed\u017eenom prietoku a m\u00f4\u017ee sa prehria\u0165, ak sa zv\u00fd\u0161i okolit\u00e1 teplota alebo je obmedzen\u00fd prietok chladiaceho vzduchu. Spr\u00e1vnym rie\u0161en\u00edm je regul\u00e1cia ot\u00e1\u010dok pomocou frekven\u010dn\u00e9ho meni\u010da \u2013 zn\u00ed\u017eenie ot\u00e1\u010dok \u010derpadla za \u00fa\u010delom zn\u00ed\u017eenia prietoku \u0161etr\u00ed energiu v kubick\u00fdch jednotk\u00e1ch a proporcion\u00e1lne zni\u017euje za\u0165a\u017eenie motora, namiesto plytvania energiou cez \u0161krtiaci ventil.<\/p>\n<\/div>\n<\/div>\n

\n
\n
M\u00e1m si pre svoje odstrediv\u00e9 \u010derpadlo vybra\u0165 2-p\u00f3lov\u00fd alebo 4-p\u00f3lov\u00fd motor?<\/div>\n<\/div>\n
\n

Vo\u013eba medzi 2-p\u00f3lov\u00fdm (2 900 ot.\/min.) a 4-p\u00f3lov\u00fdm (1 450 ot.\/min.) z\u00e1vis\u00ed od kon\u0161trukcie \u010derpadla a po\u017eadovan\u00e9ho prev\u00e1dzkov\u00e9ho bodu. V\u00e4\u010d\u0161ina odstrediv\u00fdch \u010derpadiel ur\u010den\u00fdch pre technick\u00e9 zariadenia budov a HVAC je optimalizovan\u00e1 na prev\u00e1dzku pri 2 900 ot.\/min. (2-p\u00f3lov\u00e9) alebo 1 450 ot.\/min. (4-p\u00f3lov\u00e9) a po\u010det p\u00f3lov motora sa mus\u00ed zhodova\u0165 s kon\u0161truk\u010dn\u00fdmi ot\u00e1\u010dkami \u010derpadla, aby sa dosiahol \u0161pecifikovan\u00fd prev\u00e1dzkov\u00fd bod. Menovit\u00e9 ot\u00e1\u010dky n\u00e1jdete v \u00fadajovom liste \u010derpadla \u2013 ak je prev\u00e1dzkov\u00fd bod \u0161pecifikovan\u00fd pri 2 900 ot.\/min., pou\u017eite 2-p\u00f3lov\u00fd motor; ak je prev\u00e1dzkov\u00fd bod \u0161pecifikovan\u00fd pri 1 450 ot.\/min., pou\u017eite 4-p\u00f3lov\u00fd. Dvojp\u00f3lov\u00e9 motory s\u00fa \u00fa\u010dinnej\u0161ie na dan\u00fa ve\u013ekos\u0165 r\u00e1mu, ale maj\u00fa vy\u0161\u0161iu mieru opotrebovania lo\u017e\u00edsk pri 2 900 ot.\/min. v porovnan\u00ed so 4-p\u00f3lov\u00fdmi pri 1 450 ot.\/min. \u2013 pre nepretr\u017eit\u00fa prev\u00e1dzku S1 pon\u00faka 4-p\u00f3lov\u00fd motor zvy\u010dajne dlh\u0161iu \u017eivotnos\u0165 lo\u017e\u00edsk a ni\u017e\u0161ie vibr\u00e1cie.<\/p>\n<\/div>\n<\/div>\n

\n
\n
Ako m\u00e1m dimenzova\u0165 motor, ak v \u00fadajovom liste \u010derpadla je uveden\u00fd iba v\u00fdkon v kW pri BEP a ja pracujem v inom prev\u00e1dzkovom bode?<\/div>\n<\/div>\n
\n

V\u00fdkon na hriadeli \u010derpadla (kW) vo va\u0161om \u0161pecifickom prev\u00e1dzkovom bode od\u010d\u00edtajte z v\u00fdkonnostnej krivky \u010derpadla, nielen pri BEP. V\u00fdkon na hriadeli \u010derpadla sa v celom prev\u00e1dzkovom rozsahu men\u00ed \u2013 pri v\u00e4\u010d\u0161ine kon\u0161trukci\u00ed odstrediv\u00fdch \u010derpadiel sa zvy\u0161uje napravo od BEP (smerom k maxim\u00e1lnemu prietoku pri n\u00edzkej dopravnej v\u00fd\u0161ke) a m\u00f4\u017ee by\u0165 v\u00fdrazne vy\u0161\u0161\u00ed ako pri BEP. V\u017edy od\u010d\u00edtajte v\u00fdkon na hriadeli v najhor\u0161om prev\u00e1dzkovom bode, v ktorom bude \u010derpadlo pracova\u0165 \u2013 zvy\u010dajne v bode maxim\u00e1lneho prietoku na krivke syst\u00e9mu \u2013 potom pou\u017eite prev\u00e1dzkov\u00fd faktor motora a vyberte najbli\u017e\u0161iu \u0161tandardn\u00fa hodnotu Y2 kW nad touto hodnotou. Ak je v \u00fadajovom liste \u010derpadla uveden\u00fd iba \u00fadaj BEP, pred \u0161pecifik\u00e1ciou motora si od v\u00fdrobcu \u010derpadla vy\u017eiadajte kompletn\u00e9 v\u00fdkonnostn\u00e9 krivky.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n
<\/div>\n

 <\/p>\n

\n
Korea Ever-Power \u00b7 S\u00e9ria Y2 \u00b7 Pohony odstrediv\u00fdch \u010derpadiel<\/div>\n

Potrebujete motor pre va\u0161u odstrediv\u00fa pumpu?<\/h2>\n

S\u00e9ria Korea Ever-Power Y2: \u00fa\u010dinnos\u0165 IE3, 0,18 \u2013 200 kW, 2-p\u00f3lov\u00e9 a 4-p\u00f3lov\u00e9, IP54\/55. Skladom k okam\u017eit\u00e9mu dodaniu. Technick\u00e1 podpora pri dimenzovan\u00ed je k dispoz\u00edcii od n\u00e1\u0161ho technick\u00e9ho t\u00edmu.<\/p>\n

Zobrazi\u0165 sortiment motorov Y2<\/a><\/p>\n<\/div>\n<\/div>\n

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

Korea Ever-Power \u00b7 Y2 Series \u00b7 Pump Drive Application Guide Three-Phase Motor for Centrifugal Pump: Sizing, Starting and Duty Cycle Guide Centrifugal pump drives are the most energy-intensive motor application in most industrial facilities, accounting for 25 to 40 percent of total motor electricity consumption. Selecting the correct three-phase motor \u2014 matched to the pump […]<\/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-264","post","type-post","status-publish","format-standard","hentry","category-industrial-electric-motor"],"_links":{"self":[{"href":"https:\/\/industrialelectricmotor.net\/sk\/wp-json\/wp\/v2\/posts\/264","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=264"}],"version-history":[{"count":1,"href":"https:\/\/industrialelectricmotor.net\/sk\/wp-json\/wp\/v2\/posts\/264\/revisions"}],"predecessor-version":[{"id":267,"href":"https:\/\/industrialelectricmotor.net\/sk\/wp-json\/wp\/v2\/posts\/264\/revisions\/267"}],"wp:attachment":[{"href":"https:\/\/industrialelectricmotor.net\/sk\/wp-json\/wp\/v2\/media?parent=264"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/industrialelectricmotor.net\/sk\/wp-json\/wp\/v2\/categories?post=264"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/industrialelectricmotor.net\/sk\/wp-json\/wp\/v2\/tags?post=264"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}