{"id":262,"date":"2026-07-10T06:03:58","date_gmt":"2026-07-10T06:03:58","guid":{"rendered":"https:\/\/industrialelectricmotor.net\/?p=262"},"modified":"2026-07-10T06:03:58","modified_gmt":"2026-07-10T06:03:58","slug":"inverter-duty-motor-for-hvac-fan-and-pump","status":"publish","type":"post","link":"https:\/\/industrialelectricmotor.net\/sk\/inverter-duty-motor-for-hvac-fan-and-pump\/","title":{"rendered":"Invertorov\u00fd motor pre ventil\u00e1tor a \u010derpadlo HVAC"},"content":{"rendered":"
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Korea Ever-Power \u00b7 S\u00e9ria YVF2 \u00b7 Sprievodca aplik\u00e1ciou pohonu HVAC<\/span><\/p>\n

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Invertorov\u00fd motor pre ventil\u00e1tor a \u010derpadlo HVAC:
\nPre\u010do meni\u010de frekvencie potrebuj\u00fa \u0161peci\u00e1lny motor<\/span><\/h1>\n

\u0160tandardn\u00fd trojf\u00e1zov\u00fd asynchr\u00f3nny motor pripojen\u00fd k meni\u010du frekvencie (VFD) vo ventil\u00e1tore alebo \u010derpadle HVAC zvy\u010dajne zlyh\u00e1 v priebehu 2 a\u017e 5 rokov z d\u00f4vodu poruchy izol\u00e1cie vinutia, po\u0161kodenia lo\u017eiskov\u00fdm pr\u00fadom alebo prehriatia pri n\u00edzkych ot\u00e1\u010dkach \u2013 ni\u010d z toho by sa nestalo, ak by motor be\u017eal na s\u00ednusov\u00e9 nap\u00e1janie s pevnou frekvenciou. Invertorov\u00e9 motory Korea Ever-Power YVF2 s\u00fa navrhnut\u00e9 tak, aby rie\u0161ili v\u0161etky tri re\u017eimy poruchy, v\u010faka \u010domu s\u00fa spr\u00e1vnou a bezpe\u010dnou \u0161pecifik\u00e1ciou pre v\u0161etky aplik\u00e1cie HVAC s meni\u010dmi frekvencie nad 0,75 kW.<\/p>\n

IC416 N\u00faten\u00e9 chladenie<\/span>
\nIzol\u00e1cia triedy H<\/span>
\nOchrana lo\u017eiskov\u00e9ho pr\u00fadu<\/span>
\n\u00daspora energie P \u221d n\u00b3<\/span>
\n0,75 \u2013 200 kW<\/span><\/div>\n<\/div>\n<\/div>\n

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51%<\/div>\n
\u00daspora energie pri ot\u00e1\u010dkach ventil\u00e1tora 80%<\/div>\n<\/div>\n
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1\u20133 roky<\/div>\n
Typick\u00e1 doba n\u00e1vratnosti VFD pre ventil\u00e1tor HVAC<\/div>\n<\/div>\n
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Trieda H<\/div>\n
Izol\u00e1cia vs. trieda F v \u0161tandardn\u00fdch motoroch<\/div>\n<\/div>\n
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IC416<\/div>\n
N\u00faten\u00fd ventil\u00e1tor: pln\u00fd kr\u00fatiaci moment od 0 do 60 Hz<\/div>\n<\/div>\n
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PTC<\/div>\n
\u0160tandard ochrany vinutia termistora<\/div>\n<\/div>\n<\/div>\n

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\"Invertorov\u00fd<\/p>\n
Invertorov\u00fd motor s\u00e9rie Korea Ever-Power YVF2 \u2013 nez\u00e1visl\u00fd ventil\u00e1tor na strane bez pohonu (vidite\u013en\u00fd vzadu) zabezpe\u010duje n\u00faten\u00e9 vetranie IC416, ktor\u00e9 udr\u017eiava pln\u00fd pr\u00fad chladiaceho vzduchu bez oh\u013eadu na ot\u00e1\u010dky motora, \u010d\u00edm sa eliminuje riziko prehriatia, ktor\u00e9 rob\u00ed \u0161tandardn\u00e9 motory IC411 s vlastnou ventil\u00e1ciou nevhodn\u00fdmi pre prev\u00e1dzku s frekven\u010dn\u00fdm meni\u010dom pri n\u00edzkych ot\u00e1\u010dkach v pohonoch ventil\u00e1torov a \u010derpadiel HVAC.<\/div>\n<\/div>\n

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Obsah<\/div>\n
1. \u00daspora energie: Argumenty pre frekven\u010dn\u00e9 meni\u010de v syst\u00e9moch HVAC<\/a>
\n2. Pre\u010do \u0161tandardn\u00e9 motory zlyh\u00e1vaj\u00fa na frekven\u010dnom meni\u010di<\/a>
\n3. IC416 vs. IC411: Chladenie pri n\u00edzkej r\u00fdchlosti<\/a>
\n4. Izol\u00e1cia triedy H pre nap\u00e4\u0165ov\u00e9 \u0161pi\u010dky VFD<\/a>
\n5. Ochrana proti lo\u017eiskov\u00e9mu pr\u00fadu<\/a>
\n6. \u0160pecifik\u00e1cie YVF2 pre HVAC<\/a>
\n7. Aplik\u00e1cie HVAC<\/a>
\n8. \u010casto kladen\u00e9 ot\u00e1zky<\/a><\/div>\n<\/div>\n

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1. \u00daspora energie: Argumenty pre frekven\u010dn\u00e9 meni\u010de na pohonoch ventil\u00e1torov a \u010derpadiel HVAC<\/h2>\n

Ventil\u00e1tory HVAC a \u010derpadl\u00e1 studenej vody v komer\u010dn\u00fdch a priemyseln\u00fdch budov\u00e1ch s\u00fa zvy\u010dajne navrhnut\u00e9 tak, aby sp\u013a\u0148ali podmienky \u0161pi\u010dkov\u00e9ho za\u0165a\u017eenia \u2013 najteplej\u0161\u00ed de\u0148 v roku alebo maxim\u00e1lne za\u0165a\u017eenie budovy. Po\u010das 70 a\u017e 90 percent prev\u00e1dzkov\u00fdch hod\u00edn je skuto\u010dn\u00fd dopyt v\u00fdrazne ni\u017e\u0161\u00ed ako \u0161pi\u010dka, no motor s pevn\u00fdmi ot\u00e1\u010dkami s tlmi\u010dom alebo ventilom be\u017e\u00ed na pln\u00fd v\u00fdkon a prebyto\u010dn\u00fa kapacitu plytv\u00e1 cez obmedzenie. Regul\u00e1cia ot\u00e1\u010dok pomocou frekven\u010dn\u00e9ho meni\u010da eliminuje toto plytvanie prisp\u00f4soben\u00edm ot\u00e1\u010dok ventil\u00e1tora alebo \u010derpadla skuto\u010dn\u00e9mu dopytu.<\/p>\n

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Pr\u00edklad \u00faspory energie \u2013 pr\u00edvodn\u00fd ventil\u00e1tor vzduchotechnickej jednotky<\/div>\n
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Bez VFD (regul\u00e1cia klapiek):<\/div>\n
Motor: 22 kW pri pln\u00fdch ot\u00e1\u010dkach, 8 000 h\/rok
\nPriemern\u00e9 za\u0165a\u017eenie: 75% \u0161pi\u010dky
\nRo\u010dn\u00e1 spotreba: 22 \u00d7 8 000 = 176 000 kWh<\/strong>
\nRo\u010dn\u00e9 n\u00e1klady pri $0,13\/kWh = $22,880<\/strong><\/div>\n<\/div>\n
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S VFD + motorom YVF2 (regul\u00e1cia ot\u00e1\u010dok):<\/div>\n
Priemern\u00e1 r\u00fdchlos\u0165: 85% plnej r\u00fdchlosti
\nPriemern\u00fd v\u00fdkon: 22 \u00d7 (0,85)\u00b3 = 13,5 kW
\nRo\u010dn\u00e1 spotreba: 13,5 \u00d7 8 000 = 108 000 kWh<\/strong>
\nRo\u010dn\u00e9 n\u00e1klady = $14 040 \u2013 \u00faspora $8 840\/rok<\/strong><\/div>\n<\/div>\n<\/div>\n
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Doba n\u00e1vratnosti: N\u00e1klady na syst\u00e9m s frekven\u010dn\u00fdm meni\u010dom $4 500 \u00f7 $8 840\/rok, \u00faspora = 0,51 roka (6 mesiacov)<\/div>\n<\/div>\n<\/div>\n

Tento pr\u00edklad ilustruje, pre\u010do m\u00e1 regul\u00e1cia ot\u00e1\u010dok ventil\u00e1torov a \u010derpadiel HVAC pomocou frekven\u010dn\u00e9ho meni\u010da (VFD) typick\u00fa dobu n\u00e1vratnosti 6 mesiacov a\u017e 2 roky, \u010do z nej rob\u00ed jednu z najn\u00e1vratnej\u0161\u00edch invest\u00edci\u00ed do energetickej \u00fa\u010dinnosti dostupn\u00fdch v oblasti technickej podpory budov. K\u013e\u00fa\u010dom je sp\u00e1rovanie VFD s invertorov\u00fdm motorom YVF2, nie so \u0161tandardn\u00fdm motorom Y2, aby sa zabezpe\u010dila spo\u013eahliv\u00e1 dlhodob\u00e1 prev\u00e1dzka.<\/p>\n<\/div>\n

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2. Pre\u010do \u0161tandardn\u00e9 motory zlyh\u00e1vaj\u00fa na meni\u010doch frekvencie<\/h2>\n

\u0160tandardn\u00fd motor Y2 (samovetran\u00fd IC411, izol\u00e1cia triedy F) pripojen\u00fd priamo k meni\u010du frekvencie bez ochrany \u0161pecifickej pre motor bude ma\u0165 tri poruchov\u00e9 mechanizmy, ktor\u00e9 sa nevyskytuj\u00fa pri s\u00ednusovom nap\u00e1jan\u00ed s pevnou frekvenciou:<\/p>\n

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1. Poru\u0161enie izol\u00e1cie v d\u00f4sledku nap\u00e4\u0165ov\u00fdch \u0161pi\u010diek<\/div>\n

V\u00fdstup frekven\u010dn\u00e9ho meni\u010da (VFD) je pulzne \u0161\u00edrkovo modulovan\u00fd (PWM) priebeh so sp\u00ednac\u00edmi nap\u00e4\u0165ov\u00fdmi \u0161pi\u010dkami 1 000 a\u017e 1 600 V (v z\u00e1vislosti od d\u013a\u017eky k\u00e1bla a sp\u00ednacej frekvencie VFD), ktor\u00e9 sa opakuj\u00fa pri nosnej frekvencii 2 a\u017e 16 kHz. \u0160tandardn\u00e1 izol\u00e1cia vinutia triedy F, navrhnut\u00e1 pre s\u00ednusov\u00e9 nap\u00e1janie, sa pri opakovan\u00fdch vysokofrekven\u010dn\u00fdch nap\u00e4\u0165ov\u00fdch \u0161pi\u010dk\u00e1ch r\u00fdchlo opotrebov\u00e1va. \u010ciasto\u010dn\u00fd v\u00fdboj v izol\u00e1cii vinutia postupne nar\u00fa\u0161a izol\u00e1ciu vodi\u010da, \u010do sp\u00f4sobuje medziz\u00e1vitov\u00e9 skraty v priebehu 2 a\u017e 4 rokov prev\u00e1dzky VFD bez adekv\u00e1tnej \u0161pecifik\u00e1cie izol\u00e1cie motora.<\/p>\n<\/div>\n

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2. Prehriatie pri n\u00edzkej r\u00fdchlosti<\/div>\n

\u0160tandardn\u00e9 motory IC411 pou\u017e\u00edvaj\u00fa na chladenie statora a vinutia ventil\u00e1tor namontovan\u00fd na hriadeli \u2013 pr\u00fad chladiaceho vzduchu je \u00famern\u00fd ot\u00e1\u010dkam hriade\u013ea. Pri frekvencii 25 Hz (501 TP3T menovit\u00fdch ot\u00e1\u010dok) poskytuje chladiaci ventil\u00e1tor iba pribli\u017ene 251 TP3T pri plnej r\u00fdchlosti chladiaceho vzduchu. Pri frekvencii 25 Hz v\u0161ak motor st\u00e1le produkuje menovit\u00fd kr\u00fatiaci moment, a teda pribli\u017ene 501 TP3T menovit\u00e9ho v\u00fdkonu, \u010do generuje zna\u010dn\u00e9 mno\u017estvo tepla, ktor\u00e9 ventil\u00e1tor nedok\u00e1\u017ee dostato\u010dne odvies\u0165. Teplota vinutia st\u00fapa nad limit triedy F, \u010d\u00edm sa zr\u00fdch\u013euje starnutie izol\u00e1cie dvojn\u00e1sobne na ka\u017ed\u00fdch 10 K prebytku teploty (Montsingerovo pravidlo).<\/p>\n<\/div>\n

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3. Po\u0161kodenie lo\u017eiskov\u00fdm pr\u00fadom<\/div>\n

PWM prep\u00ednanie VFD vytv\u00e1ra kapacitn\u00fa v\u00e4zbu medzi vinutiami statora a hriade\u013eom rotora, \u010d\u00edm sa na hriadeli indukuje s\u00faf\u00e1zov\u00e9 nap\u00e4tie. Toto nap\u00e4tie na hriadeli sa vyb\u00edja cez lo\u017eisk\u00e1 motora (cesta s najni\u017e\u0161\u00edm odporom k zemi), \u010do sp\u00f4sobuje vysokofrekven\u010dn\u00e9 elektrick\u00e9 v\u00fdbojov\u00e9 obr\u00e1banie (EDM) lo\u017eiskov\u00fdch kr\u00fa\u017ekov a gu\u013e\u00f4\u010dok. Po\u0161kodenie lo\u017eiskov\u00fdm pr\u00fadom vytv\u00e1ra charakteristick\u00e9 n\u00e1mrazy a ryhovanie na povrchu lo\u017eiskov\u00fdch kr\u00fa\u017ekov, \u010do vedie k zv\u00fd\u0161en\u00fdm vibr\u00e1ci\u00e1m a poruche lo\u017eiska v priebehu 6 a\u017e 18 mesiacov na \u0161tandardn\u00fdch nechr\u00e1nen\u00fdch lo\u017eisk\u00e1ch prev\u00e1dzkovan\u00fdch na frekven\u010dn\u00fdch meni\u010doch s vysokou nosnou frekvenciou.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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3. IC416 vs. IC411: Chladenie pri n\u00edzkej r\u00fdchlosti<\/h2>\n

Norma IEC 60034-6 definuje ozna\u010denia chladiacich obvodov motora. IC411 je \u0161tandardn\u00fd chladiaci obvod s vlastn\u00fdm vetran\u00edm \u2013 motor sa chlad\u00ed ventil\u00e1torom namontovan\u00fdm na hriadeli. IC416 je chladiaci obvod s n\u00faten\u00fdm vetran\u00edm \u2013 samostatn\u00fd nez\u00e1visle nap\u00e1jan\u00fd ventil\u00e1tor zabezpe\u010duje kon\u0161tantn\u00fd prietok chladiaceho vzduchu bez oh\u013eadu na ot\u00e1\u010dky hlavn\u00e9ho motora.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n
Nehnute\u013enos\u0165<\/th>\nIC411 (\u0161tandard Y2)<\/th>\nIC416 (s\u00e9ria YVF2)<\/th>\n<\/tr>\n<\/thead>\n
Pohon chladiaceho ventil\u00e1tora<\/td>\nNamontovan\u00e9 na hriadeli (z\u00e1visl\u00e9 od ot\u00e1\u010dok)<\/td>\nNez\u00e1visl\u00fd motor ventil\u00e1tora (kon\u0161tantn\u00fd)<\/td>\n<\/tr>\n
Chladenie pri 25 Hz (r\u00fdchlos\u0165 50%)<\/td>\n~25% menovit\u00e9ho prietoku vzduchu<\/td>\n100% menovit\u00e9ho prietoku vzduchu<\/td>\n<\/tr>\n
Chladenie pri 5 Hz (r\u00fdchlos\u0165 10%)<\/td>\n~2% menovit\u00e9ho prietoku vzduchu \u2013 kritick\u00e9<\/td>\n100% menovit\u00e9ho prietoku vzduchu<\/td>\n<\/tr>\n
Menovit\u00fd kr\u00fatiaci moment pri n\u00edzkych ot\u00e1\u010dkach<\/td>\nZn\u00ed\u017eenie v\u00fdkonu pod 30 Hz<\/td>\nPln\u00fd menovit\u00fd kr\u00fatiaci moment od 0 do menovitej frekvencie<\/td>\n<\/tr>\n
Statick\u00fd pr\u00eddr\u017en\u00fd moment (0 Hz)<\/td>\nBez chladenia \u2013 nevhodn\u00e9<\/td>\n\u00dapln\u00e9 chladenie \u2013 mo\u017en\u00e9 statick\u00e9 udr\u017eanie<\/td>\n<\/tr>\n
Vhodnos\u0165 meni\u010da frekvencie<\/td>\nNeodpor\u00fa\u010da sa pod 50 Hz nepretr\u017eite<\/td>\nNavrhnut\u00e9 pre prev\u00e1dzku s frekven\u010dn\u00fdm meni\u010dom (VFD) s frekvenciou 0\u2013120 Hz<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Pre pohony ventil\u00e1torov HVAC, ktor\u00e9 pravidelne pracuj\u00fa pod 40 Hz (80% menovit\u00fdch ot\u00e1\u010dok) \u2013 \u010do je norm\u00e1lny prev\u00e1dzkov\u00fd rozsah pre v\u00e4\u010d\u0161inu ventil\u00e1torov AHU s frekven\u010dn\u00fdm meni\u010dom a ventil\u00e1torov chladiacich ve\u017e\u00ed mimo podmienok \u0161pi\u010dkov\u00e9ho za\u0165a\u017eenia \u2013 nie je n\u00faten\u00e9 chladenie IC416 volite\u013en\u00e9. Je to z\u00e1kladn\u00e1 po\u017eiadavka pre bezpe\u010dn\u00fa a spo\u013eahliv\u00fa dlhodob\u00fa prev\u00e1dzku.<\/p>\n<\/div>\n

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4. Izol\u00e1cia triedy H pre nap\u00e4\u0165ov\u00e9 \u0161pi\u010dky VFD<\/h2>\n
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Rad YVF2 pou\u017e\u00edva izol\u00e1ciu vinutia triedy H (maxim\u00e1lna trval\u00e1 teplota 180 \u00b0C) s formul\u00e1ciou pre VFD, ktor\u00e1 zah\u0155\u0148a zv\u00fd\u0161en\u00fa odolnos\u0165 proti \u010diasto\u010dn\u00e9mu v\u00fdboju. Izol\u00e1cia triedy H v YVF2 poskytuje dve vrstvy dodato\u010dnej ochrany v porovnan\u00ed s izol\u00e1ciou triedy F v \u0161tandardnom motore Y2:<\/p>\n

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Vy\u0161\u0161ia tolerancia nap\u00e4\u0165ov\u00fdch \u0161pi\u010diek<\/div>\n

Izol\u00e1cia triedy H pre meni\u010de frekvencie (VFD) v YVF2 je formulovan\u00e1 s vy\u0161\u0161ou dielektrickou pevnos\u0165ou a vy\u0161\u0161\u00edm po\u010diato\u010dn\u00fdm nap\u00e4t\u00edm \u010diasto\u010dn\u00e9ho v\u00fdboja ako \u0161tandardn\u00e1 izol\u00e1cia triedy F. Je dimenzovan\u00e1 tak, aby odolala opakovan\u00fdm nap\u00e4\u0165ov\u00fdm \u0161pi\u010dk\u00e1m a\u017e do \u0161pi\u010dky 1 600 V (dV\/dt a\u017e 5 000 V\/\u03bcs) bez postupn\u00e9ho preru\u0161enia izol\u00e1cie \u2013 \u010do zodpoved\u00e1 v\u00fdstupn\u00fdm charakteristik\u00e1m modern\u00fdch VFD zalo\u017een\u00fdch na IGBT pracuj\u00facich s k\u00e1blov\u00fdmi trasami a\u017e do d\u013a\u017eky pribli\u017ene 50 m bez dodato\u010dn\u00e9ho filtrovania v\u00fdstupu.<\/p>\n<\/div>\n

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Tepeln\u00e1 rezerva pri prev\u00e1dzkovej teplote<\/div>\n

Aj pri n\u00fatenom chladen\u00ed IC416 generuje prev\u00e1dzka motora pri n\u00edzkych ot\u00e1\u010dkach s pln\u00fdm kr\u00fatiacim momentom viac tepla na jednotku v\u00fdstupn\u00e9ho v\u00fdkonu ako pri menovit\u00fdch ot\u00e1\u010dkach. Tepeln\u00e1 rezerva 25 K triedy H oproti triede F znamen\u00e1, \u017ee vinutie YVF2 pracuje za rovnak\u00fdch prev\u00e1dzkov\u00fdch podmienok s ni\u017e\u0161\u00edm zlomkom svojho tepeln\u00e9ho limitu, \u010d\u00edm sa predl\u017euje \u017eivotnos\u0165 izol\u00e1cie v s\u00falade s Montsingerov\u00fdm pravidlom.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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Porovnanie izol\u00e1cie<\/div>\n\n\n\n\n\n\n\n\n
Nehnute\u013enos\u0165<\/th>\nTrieda F<\/th>\nTrieda H<\/th>\n<\/tr>\n<\/thead>\n
Maxim\u00e1lna teplota<\/td>\n155 \u00b0C<\/td>\n180 \u00b0C<\/td>\n<\/tr>\n
Tepeln\u00e1 rezerva*<\/td>\n15 tis\u00edc<\/td>\n40 tis\u00edc<\/td>\n<\/tr>\n
Relat\u00edvna \u017eivotnos\u0165 pri teplote okolia 40 \u00b0C<\/td>\n1\u00d7<\/td>\n8\u00d7<\/td>\n<\/tr>\n
Menovit\u00fd v\u00fdkon meni\u010da frekvencie<\/td>\n\u0160tandard<\/td>\nPrev\u00e1dzka s frekven\u010dn\u00fdm meni\u010dom<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
*Rezerva nad n\u00e1rastom teploty triedy B (80 K) pri okolitej teplote 40 \u00b0C<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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5. Ochrana proti lo\u017eiskov\u00e9mu pr\u00fadu<\/h2>\n

S\u00e9ria YVF2 rie\u0161i po\u0161kodenie lo\u017eiskov\u00e9ho pr\u00fadu frekven\u010dn\u00e9ho meni\u010da kombin\u00e1ciou v\u00fdberu lo\u017eiska, izol\u00e1cie a uzemnenia. Z\u00e1va\u017enos\u0165 lo\u017eiskov\u00e9ho pr\u00fadu z\u00e1vis\u00ed od ve\u013ekosti r\u00e1mu motora, nosnej frekvencie frekven\u010dn\u00e9ho meni\u010da a d\u013a\u017eky k\u00e1bla. Spolo\u010dnos\u0165 Korea Ever-Power uplat\u0148uje v s\u00e9rii YVF2 nasleduj\u00face ochrann\u00e9 opatrenia:<\/p>\n

\n
\n
Izolovan\u00e9 lo\u017eisko na strane bez pohonu (r\u00e1m 180+)<\/div>\n

Pri motoroch YVF2 s r\u00e1mami 180M a vy\u0161\u0161\u00edmi je lo\u017eisko na strane mimo hnacieho motora (NDE) umiestnen\u00e9 v izolovanom puzdre, ktor\u00e9 preru\u0161uje cestu pr\u00fadu medzi hriade\u013eom, lo\u017eiskom a r\u00e1mom. Pr\u00fad v lo\u017eisku je n\u00faten\u00fd n\u00e1js\u0165 alternat\u00edvnu cestu k zemi, ktor\u00e1 nezah\u0155\u0148a lo\u017eiskov\u00e9 plochy, \u010d\u00edm sa chr\u00e1ni lo\u017eisko na strane hnacieho motora pred preva\u017enou \u010das\u0165ou cirkuluj\u00faceho pr\u00fadu.<\/p>\n<\/div>\n

\n
Uzem\u0148ovac\u00ed kr\u00fa\u017eok hriade\u013ea (volite\u013en\u00fd)<\/div>\n

Vodiv\u00fd uzem\u0148ovac\u00ed kr\u00fa\u017eok z mikrovl\u00e1kna poskytuje n\u00edzkoimpedan\u010dn\u00fa cestu pre vybitie s\u00faf\u00e1zov\u00e9ho nap\u00e4tia na hriadeli do zeme bez prechodu cez lo\u017eisko. Odpor\u00fa\u010da sa pre motory YVF2 nad 11 kW na meni\u010doch s frekvenciou (VFD) s nosn\u00fdmi frekvenciami nad 4 kHz alebo pre in\u0161tal\u00e1cie s dlh\u00fdmi k\u00e1blami motora (nad 30 m). Dostupn\u00e9 ako volite\u013en\u00e1 v\u00fdbava od spolo\u010dnosti Korea Ever-Power.<\/p>\n<\/div>\n

\n
Filter dV\/dt na strane VFD (odpor\u00fa\u010dan\u00fd pre dlh\u00e9 k\u00e1ble)<\/div>\n

V\u00fdstupn\u00fd filter dV\/dt na frekven\u010dnom meni\u010di (VFD) zni\u017euje r\u00fdchlos\u0165 n\u00e1rastu nap\u00e4tia PWM impulzov, \u010d\u00edm obmedzuje \u0161pi\u010dkov\u00e9 prep\u00e4tie na svork\u00e1ch motora. Pri k\u00e1bloch medzi motorom a VFD s d\u013a\u017ekou nad 50 m filter dV\/dt zni\u017euje \u0161pi\u010dkov\u00e9 nap\u00e4tie na svork\u00e1ch motora pod limit izol\u00e1cie YVF2 bez oh\u013eadu na frekvenciu sp\u00ednania VFD. Spolo\u010dnos\u0165 Korea Ever-Power odpor\u00fa\u010da filtre na strane VFD pre in\u0161tal\u00e1cie ventil\u00e1torov HVAC s dlh\u00fdmi k\u00e1blov\u00fdmi trasami z centr\u00e1lnych panelov VFD k vzdialen\u00fdm klimatiza\u010dn\u00fdm jednotk\u00e1m (AHU).<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

6. \u0160pecifik\u00e1cie YVF2 pre aplik\u00e1cie HVAC<\/h2>\n
\n
\n

S\u00e9ria korejsk\u00fdch motorov Ever-Power YVF2 je \u0161peci\u00e1lne navrhnut\u00fd invertorov\u00fd motor pre aplik\u00e1cie s frekven\u010dn\u00fdmi meni\u010dmi (VFD) v syst\u00e9moch HVAC a priemyseln\u00fdch syst\u00e9moch. YVF2 je k dispoz\u00edcii v Sekcia produktov s meni\u010dov\u00fdm motorom s frekven\u010dn\u00fdm meni\u010dom<\/a> v rozsahu v\u00fdkonu od 0,75 do 200 kW v 2-p\u00f3lov\u00fdch a 4-p\u00f3lov\u00fdch konfigur\u00e1ci\u00e1ch. 4-p\u00f3lov\u00e1 konfigur\u00e1cia (1 450 ot.\/min.) je \u0161tandardom pre ventil\u00e1tory vzduchotechnick\u00fdch jednotiek, ventil\u00e1tory chladiacich ve\u017e\u00ed a \u010derpadl\u00e1 studenej vody; 2-p\u00f3lov\u00e1 konfigur\u00e1cia (2 900 ot.\/min.) sa pou\u017e\u00edva pre vysokor\u00fdchlostn\u00e9 odstrediv\u00e9 ventil\u00e1tory a procesn\u00e9 \u010derpadl\u00e1, kde je \u010derpadlo alebo ventil\u00e1tor navrhnut\u00fd na prev\u00e1dzku s 2 900 ot.\/min.<\/p>\n<\/div>\n

\n
\n
K\u013e\u00fa\u010dov\u00e9 \u0161pecifik\u00e1cie YVF2<\/div>\n\n\n\n\n\n\n\n\n\n\n
Rozsah v\u00fdkonu<\/td>\n0,75 \u2013 200 kW<\/td>\n<\/tr>\n
Chladenie<\/td>\nIC416 n\u00faten\u00e9 vetranie<\/td>\n<\/tr>\n
Izol\u00e1cia<\/td>\nTrieda H, prev\u00e1dzka s meni\u010dom frekvencie<\/td>\n<\/tr>\n
Rozsah r\u00fdchlosti<\/td>\nNap\u00e1janie meni\u010da frekvencie 0\u2013120 Hz<\/td>\n<\/tr>\n
Ochrana<\/td>\n\u0160tandard IP54<\/td>\n<\/tr>\n
PTC termistory<\/td>\n\u0160tandardn\u00e9 \u2013 pripojenie k vstupu VFD PTC<\/td>\n<\/tr>\n
Hodnotenie nap\u00e4\u0165ov\u00fdch \u0161pi\u010diek<\/td>\n\u0160pi\u010dka a\u017e 1 600 V<\/td>\n<\/tr>\n
Poliaci<\/td>\n2P (2 900 ot.\/min.) \/ 4P (1 450 ot.\/min.)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

7. Aplik\u00e1cie HVAC<\/h2>\n\n\n\n
\"Motor<\/p>\n
\n
\u010cerpadl\u00e1 studenej vody a kondenza\u010dnej vody<\/div>\n

Prim\u00e1rne a sekund\u00e1rne \u010derpadl\u00e1 chladenej vody v centr\u00e1lnych syst\u00e9moch HVAC s\u00fa najv\u00e4\u010d\u0161\u00edm spotrebite\u013eom energie vo v\u00e4\u010d\u0161ine komer\u010dn\u00fdch budov. 4-p\u00f3lov\u00fd YVF2 s v\u00fdkonom 7,5 a\u017e 75 kW v spojen\u00ed s frekven\u010dn\u00fdm meni\u010dom (VFD) riaden\u00fdm syst\u00e9mom riadenia budovy (BMS) poskytuje variabiln\u00fa regul\u00e1ciu prim\u00e1rneho prietoku (VPF), \u010d\u00edm zni\u017euje spotrebu energie \u010derpadla o 40 a\u017e 60 percent v porovnan\u00ed so syst\u00e9mami s kon\u0161tantn\u00fdm objemom. VFD moduluje ot\u00e1\u010dky \u010derpadla, aby udr\u017eiaval nastaven\u00fa hodnotu diferen\u010dn\u00e9ho tlaku v celom distribu\u010dnom syst\u00e9me, ke\u010f\u017ee sa polohy z\u00f3nov\u00fdch ventilov menia so zmenou za\u0165a\u017eenia.<\/p>\n<\/div>\n<\/td>\n

\"Motor<\/p>\n
\n
Pr\u00edvodn\u00e9 a odvodn\u00e9 ventil\u00e1tory vzduchotechnickej jednotky (AHU)<\/div>\n

Pr\u00edvodn\u00e9 a odvodn\u00e9 ventil\u00e1tory vo ve\u013ek\u00fdch vzduchotechnick\u00fdch jednotk\u00e1ch (AHU) sl\u00fa\u017eiacich komer\u010dn\u00fdm kancel\u00e1ri\u00e1m, nemocniciam, d\u00e1tov\u00fdm centr\u00e1m a priemyseln\u00fdm zariadeniam s\u00fa prim\u00e1rnou aplik\u00e1ciou pre motory YVF2 v syst\u00e9moch HVAC. Motory ventil\u00e1torov od 7,5 do 90 kW, riaden\u00e9 meni\u010dom frekvencie (VFD) z BMS alebo samostatn\u00e9ho ovl\u00e1da\u010da HVAC na udr\u017eiavanie nastaven\u00fdch hodn\u00f4t teploty priv\u00e1dzan\u00e9ho vzduchu a statick\u00e9ho tlaku v potrub\u00ed. Syst\u00e9my s variabiln\u00fdm objemom vzduchu (VAV) zni\u017euj\u00fa ot\u00e1\u010dky ventil\u00e1tora, ke\u010f sa z\u00f3nov\u00e9 klapky zatv\u00e1raj\u00fa, \u010d\u00edm sa \u0161etr\u00ed energia ventil\u00e1tora \u00famerne tretej mocnine zn\u00ed\u017eenia ot\u00e1\u010dok.<\/p>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\n
\n
Ventil\u00e1tor chladiacej ve\u017ee<\/div>\n

Ventil\u00e1tory chladiacich ve\u017e\u00ed s n\u00faten\u00fdm pr\u00faden\u00edm pou\u017e\u00edvaj\u00fa 4-p\u00f3lov\u00e9 motory YVF2 s v\u00fdkonom 3,0 a\u017e 30 kW. Riadenie VFD moduluje ot\u00e1\u010dky ventil\u00e1tora tak, aby sa udr\u017eiavala teplota priv\u00e1dzanej vody kondenz\u00e1tora, \u010d\u00edm sa zni\u017euje spotreba energie ventil\u00e1tora o 50 a\u017e 70 percent v porovnan\u00ed s dvojr\u00fdchlostn\u00fdmi motormi s pevnou r\u00fdchlos\u0165ou. Vonkaj\u0161ia in\u0161tal\u00e1cia vy\u017eaduje krytie IP55; d\u00f4le\u017eit\u00e1 je izol\u00e1cia triedy H, preto\u017ee motor vyp\u00fa\u0161\u0165a z ve\u017ee tepl\u00fd vlhk\u00fd vzduch.<\/p>\n<\/div>\n

\n
Nap\u00e1jacie \u010derpadlo kotla<\/div>\n

Nap\u00e1jacie \u010derpadl\u00e1 kotlov v priemyseln\u00fdch parn\u00fdch syst\u00e9moch pou\u017e\u00edvaj\u00fa 2-p\u00f3lov\u00e9 alebo 4-p\u00f3lov\u00e9 motory YVF2 s v\u00fdkonom od 3,0 do 55 kW. Riadenie VFD moduluje prietok nap\u00e1jania tak, aby zodpovedal dopytu po pare, pri\u010dom nahr\u00e1dza regula\u010dn\u00fd ventil hladiny v sudoch priamou regul\u00e1ciou ot\u00e1\u010dok a v parn\u00fdch syst\u00e9moch s premenlivou spotrebou \u0161etr\u00ed 20 a\u017e 40 percent energie \u010derpadla.<\/p>\n<\/div>\n

\n
Ods\u00e1vac\u00ed a extrak\u010dn\u00fd ventil\u00e1tor<\/div>\n

Ventil\u00e1tory pre ods\u00e1vanie kuch\u00fd\u0148, laborat\u00f3rnych digestorov a parkov\u00edsk pou\u017e\u00edvaj\u00fa motory YVF2 s prev\u00e1dzkou s frekven\u010dn\u00fdm meni\u010dom riaden\u00fdm pod\u013ea potreby CO alebo CO\u2082. Po\u010das obdob\u00ed n\u00edzkej obsadenosti sa ot\u00e1\u010dky ventil\u00e1tora zn\u00ed\u017eia na minimum, \u010d\u00edm sa u\u0161etr\u00ed 40 a\u017e 60 percent energie ventil\u00e1tora v syst\u00e9moch vetrania komer\u010dn\u00fdch budov a verejn\u00fdch zariaden\u00ed.<\/p>\n<\/div>\n

\n
Vstupn\u00e1 vodiaca lopatka kompresora<\/div>\n

Riadenie v\u00fdkonu kompresora odstrediv\u00e9ho chladi\u010da pomocou motorov ovl\u00e1da\u010dov rozv\u00e1dzac\u00edch lopatiek poh\u00e1\u0148an\u00fdch frekven\u010dn\u00fdm meni\u010dom alebo priameho pohonu kompresora pomocou frekven\u010dn\u00e9ho meni\u010da. Motory YVF2 s v\u00fdkonom 0,75 a\u017e 7,5 kW pre pohon rozv\u00e1dzac\u00edch lopatiek. Pohon kompresora s pln\u00fdm frekven\u010dn\u00fdm meni\u010dom vyu\u017e\u00edva YVF2 pri menovitej ve\u013ekosti motora kompresora, zvy\u010dajne 30 a\u017e 200 kW pre ve\u013ek\u00e9 chladi\u010de.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n
\n

\"Presn\u00e9<\/p>\n

Presn\u00e9 obr\u00e1banie<\/div>\n<\/div>\n
\n

\"Testovanie<\/p>\n

Test v\u00fdkonu frekven\u010dn\u00e9ho meni\u010da<\/div>\n<\/div>\n
\n

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

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

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

Glob\u00e1lni z\u00e1kazn\u00edci v oblasti HVAC<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

8. \u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n
\n
\n
\n
M\u00f4\u017eem prida\u0165 meni\u010d frekvencie (VFD) k existuj\u00facemu \u0161tandardn\u00e9mu motoru Y2 na ventil\u00e1tore mojej klimatiza\u010dnej jednotky bez v\u00fdmeny motora?<\/div>\n<\/div>\n
\n

\u0160tandardn\u00fd motor Y2 m\u00f4\u017eete prev\u00e1dzkova\u0165 na frekven\u010dnom meni\u010di (VFD) kr\u00e1tkodobo, ale pre nepretr\u017eit\u00fa prev\u00e1dzku HVAC tento pr\u00edstup predstavuje zna\u010dn\u00e9 dlhodob\u00e9 rizik\u00e1. Ak ventil\u00e1tor pracuje iba medzi 40 a 50 Hz (80 a\u017e 100% menovit\u00fdch ot\u00e1\u010dok), zn\u00ed\u017eenie chladenia pri n\u00edzkych ot\u00e1\u010dkach je mierne a \u0161tandardn\u00e1 izol\u00e1cia nemus\u00ed by\u0165 v\u00e1\u017ene nam\u00e1han\u00e1 v z\u00e1vislosti od d\u013a\u017eky k\u00e1bla a nosnej frekvencie VFD. Av\u0161ak v\u017edy, ke\u010f ventil\u00e1tor pracuje pod 30 Hz dlhodobo \u2013 \u010do je typick\u00e9 pre syst\u00e9my s premenliv\u00fdm prietokom vzduchu \u2013 \u0161tandardn\u00e9 chladenie IC411 sa st\u00e1va nedostato\u010dn\u00fdm a izol\u00e1cia je nam\u00e1han\u00e1 opakovan\u00fdmi nap\u00e4\u0165ov\u00fdmi \u0161pi\u010dkami PWM. Pre spo\u013eahliv\u00fa moderniz\u00e1ciu existuj\u00faceho ventil\u00e1tora na riadenie VFD je preferovan\u00fdm pr\u00edstupom nahradi\u0165 motor Y2 motorom YVF2 s rovnakou ve\u013ekos\u0165ou r\u00e1mu a v\u00fdkonom a pripoji\u0165 nov\u00fd motor k VFD. Pr\u00edrastkov\u00e9 n\u00e1klady na \u0161pecifik\u00e1ciu YVF2 oproti Y2 sa zvy\u010dajne vr\u00e1tia do 6 a\u017e 12 mesiacov u\u017e len v\u010faka pred\u013a\u017eenej \u017eivotnosti motora.<\/p>\n<\/div>\n<\/div>\n

\n
\n
Prip\u00e1jaj\u00fa sa PTC termistory v motore YVF2 priamo k meni\u010du frekvencie (VFD)?<\/div>\n<\/div>\n
\n

\u00c1no \u2013 v\u00e4\u010d\u0161ina modern\u00fdch meni\u010dov s frekvenciou (VFD) obsahuje vstupn\u00fd obvod termistora PTC, ktor\u00fd priamo monitoruje teplotu vinutia motora. YVF2 sa dod\u00e1va s tromi termistormi PTC zabudovan\u00fdmi vo vinut\u00ed statora (jeden na f\u00e1zu) pripojen\u00fdmi ku svorke v svorkovnici motora, oddelene od hlavn\u00fdch nap\u00e1jac\u00edch svoriek. Pripojte obvod PTC ku vstupu PTC meni\u010da s frekvenciou a nakonfigurujte meni\u010d s frekvenciou tak, aby spustil alarm a vypol sa, ak odpor termistora prekro\u010d\u00ed prahov\u00fa hodnotu vypnutia 3,3 k\u03a9 (\u010do zodpoved\u00e1 teplote vinutia bl\u00ed\u017eiacej sa k tepeln\u00e9mu limitu triedy H). Toto poskytuje priamu tepeln\u00fa ochranu, ktor\u00e1 dop\u013a\u0148a elektronick\u00e9 pre\u0165a\u017eenie meni\u010da s frekvenciou \u2013 PTC chr\u00e1ni pred stavmi, ktor\u00e9 elektronick\u00e9 pre\u0165a\u017eenie nemus\u00ed zisti\u0165, ako je napr\u00edklad zablokovan\u00fd pr\u00edvod chladiaceho vzduchu alebo trval\u00e1 prev\u00e1dzka pri n\u00edzkych ot\u00e1\u010dkach s vysok\u00fdm kr\u00fatiacim momentom. V\u017edy povo\u013ete ochranu PTC \u2013 nenech\u00e1vajte ju odpojen\u00fa.<\/p>\n<\/div>\n<\/div>\n

\n
\n
Pri akej minim\u00e1lnej r\u00fdchlosti m\u00f4\u017eem prev\u00e1dzkova\u0165 motor YVF2 pre nepretr\u017eit\u00fa prev\u00e1dzku ventil\u00e1tora HVAC?<\/div>\n<\/div>\n
\n

YVF2 s chladen\u00edm IC416 dok\u00e1\u017ee vytvori\u0165 pln\u00fd menovit\u00fd kr\u00fatiaci moment pri akejko\u013evek r\u00fdchlosti od takmer nuly do 120 Hz, preto\u017ee d\u00fachadlo udr\u017eiava pln\u00fd prietok vzduchu nez\u00e1visle od ot\u00e1\u010dok hriade\u013ea motora. Z tepeln\u00e9ho h\u013eadiska neexistuje \u017eiadny minim\u00e1lny limit r\u00fdchlosti pre nepretr\u017eit\u00fa prev\u00e1dzku. Z praktick\u00e9ho h\u013eadiska riadenia HVAC sa odstrediv\u00e9 ventil\u00e1tory st\u00e1vaj\u00fa neefekt\u00edvnymi pod pribli\u017ene 20 a\u017e 25 Hz (40 a\u017e 50% menovit\u00fdch ot\u00e1\u010dok), preto\u017ee ventil\u00e1tor pracuje \u010faleko od svojho kon\u0161truk\u010dn\u00e9ho bodu \u2013 prietok kles\u00e1 pribli\u017ene na tretiu odmocninu v\u00fdkonu, ale odpor syst\u00e9mu m\u00f4\u017ee sp\u00f4sobi\u0165 zastavenie ventil\u00e1tora pri ve\u013emi n\u00edzkych r\u00fdchlostiach. V\u00e4\u010d\u0161ina riadiacich syst\u00e9mov HVAC s frekven\u010dn\u00fdm meni\u010dom nastavuje minim\u00e1lnu frekvenciu 20 a\u017e 25 Hz pre aplik\u00e1cie odstrediv\u00fdch ventil\u00e1torov, \u010do zodpoved\u00e1 40 a\u017e 50% menovit\u00fdch ot\u00e1\u010dok, aby sa udr\u017eala stabiln\u00e1 prev\u00e1dzka ventil\u00e1tora a primeran\u00e9 r\u00fdchlosti vetrania nad minim\u00e1lnou po\u017eiadavkou na v\u00fdmenu vzduchu pre obsluhovan\u00fd priestor.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n
<\/div>\n

 <\/p>\n

\n
Korea Ever-Power \u00b7 S\u00e9ria YVF2 \u00b7 HVAC VFD motor<\/div>\n

\u0160pecifik\u00e1cia motora s frekven\u010dn\u00fdm meni\u010dom (VFD) pre ventil\u00e1tor alebo \u010derpadlo HVAC?<\/h2>\n

S\u00e9ria Korea Ever-Power YVF2: d\u00fachadlo IC416, izol\u00e1cia triedy H pre meni\u010de frekvencie, termistory PTC, 0,75 \u2013 200 kW, 2-p\u00f3lov\u00fd a 4-p\u00f3lov\u00fd. Spr\u00e1vny motor pre ka\u017ed\u00fa aplik\u00e1ciu HVAC s meni\u010dmi frekvencie.<\/p>\n

Zobrazi\u0165 sortiment motorov YVF2<\/a><\/p>\n<\/div>\n<\/div>\n

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

Korea Ever-Power \u00b7 YVF2 Series \u00b7 HVAC Drive Application Guide Inverter-Duty Motor for HVAC Fan and Pump: Why VFD Drives Need a Special Motor A standard three-phase induction motor connected to a variable frequency drive (VFD) in an HVAC fan or pump application will typically fail within 2 to 5 years from winding insulation breakdown, […]<\/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-262","post","type-post","status-publish","format-standard","hentry","category-industrial-electric-motor"],"_links":{"self":[{"href":"https:\/\/industrialelectricmotor.net\/sk\/wp-json\/wp\/v2\/posts\/262","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=262"}],"version-history":[{"count":1,"href":"https:\/\/industrialelectricmotor.net\/sk\/wp-json\/wp\/v2\/posts\/262\/revisions"}],"predecessor-version":[{"id":265,"href":"https:\/\/industrialelectricmotor.net\/sk\/wp-json\/wp\/v2\/posts\/262\/revisions\/265"}],"wp:attachment":[{"href":"https:\/\/industrialelectricmotor.net\/sk\/wp-json\/wp\/v2\/media?parent=262"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/industrialelectricmotor.net\/sk\/wp-json\/wp\/v2\/categories?post=262"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/industrialelectricmotor.net\/sk\/wp-json\/wp\/v2\/tags?post=262"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}