{"id":21173,"date":"2026-01-04T13:36:17","date_gmt":"2026-01-04T05:36:17","guid":{"rendered":"https:\/\/viox.com\/?p=21173"},"modified":"2026-01-04T13:36:19","modified_gmt":"2026-01-04T05:36:19","slug":"star-delta-starter-wiring-diagram-sizing-selection-guide","status":"publish","type":"post","link":"https:\/\/test.viox.com\/cs\/star-delta-starter-wiring-diagram-sizing-selection-guide\/","title":{"rendered":"Pr\u016fvodce spou\u0161t\u011b\u010di hv\u011bzda-troj\u00faheln\u00edk: Sch\u00e9ma zapojen\u00ed, dimenzov\u00e1n\u00ed a v\u00fdb\u011br komponent"},"content":{"rendered":"<div class=\"product-intro\">\n<h2>Pro\u010d je spou\u0161t\u011bc\u00ed proud motoru d\u016fle\u017eit\u00fd (a stoj\u00ed v\u00e1s pen\u00edze)<\/h2>\n<p>Kdy\u017e se t\u0159\u00edf\u00e1zov\u00fd asynchronn\u00ed motor spou\u0161t\u00ed p\u0159\u00edmo online (DOL), odeb\u00edr\u00e1 <strong>5-8 n\u00e1sobek jmenovit\u00e9ho proudu<\/strong> po dobu n\u011bkolika sekund. U motoru o v\u00fdkonu 30 kW to znamen\u00e1 brut\u00e1ln\u00ed n\u00e1b\u011bhov\u00fd proud 150-240 A, kter\u00fd:<\/p>\n<ul>\n<li>Zp\u016fsobuje ru\u0161iv\u00e9 vyp\u00edn\u00e1n\u00ed jisti\u010d\u016f v poddimenzovan\u00fdch instalac\u00edch<\/li>\n<li>Zp\u016fsobuje poklesy nap\u011bt\u00ed ovliv\u0148uj\u00edc\u00ed citliv\u00e1 za\u0159\u00edzen\u00ed na stejn\u00e9 sb\u011brnici<\/li>\n<li>Zp\u016fsobuje tepeln\u00e9 nam\u00e1h\u00e1n\u00ed vinut\u00ed motoru, \u010d\u00edm\u017e se sni\u017euje \u017eivotnost o 20-30 %<\/li>\n<li>Poru\u0161uje smlouvy o p\u0159ipojen\u00ed k s\u00edti pro motory nad 7,5 kW v mnoha regionech<\/li>\n<\/ul>\n<p><strong>Spou\u0161t\u011b\u010de hv\u011bzda-troj\u00faheln\u00edk to \u0159e\u0161\u00ed omezen\u00edm n\u00e1b\u011bhov\u00e9ho proudu na 1,8-2,5\u00d7 jmenovit\u00e9ho proudu<\/strong>\u2014sn\u00ed\u017een\u00ed o 65 %, kter\u00e9 se samo zaplat\u00ed v podob\u011b zamezen\u00ed prostoj\u016fm a prodlou\u017een\u00ed \u017eivotnosti za\u0159\u00edzen\u00ed.<\/p>\n<h2>Co je spou\u0161t\u011bn\u00ed hv\u011bzda-troj\u00faheln\u00edk?<\/h2>\n<p>Spou\u0161t\u011b\u010d hv\u011bzda-troj\u00faheln\u00edk je <strong>metoda spou\u0161t\u011bn\u00ed se sn\u00ed\u017een\u00fdm nap\u011bt\u00edm<\/strong> , kter\u00e1 vyu\u017e\u00edv\u00e1 konfiguraci s dvoj\u00edm vinut\u00edm t\u0159\u00edf\u00e1zov\u00fdch motor\u016f. Zde je fyzika ve 30 sekund\u00e1ch:<\/p>\n<p><strong>Konfigurace hv\u011bzda (Y):<\/strong> Vinut\u00ed motoru zapojen\u00e1 do s\u00e9rie p\u0159ij\u00edmaj\u00ed <strong>1\/\u221a3 (58 %) s\u00ed\u0165ov\u00e9ho nap\u011bt\u00ed<\/strong>, produkuj\u00edc\u00ed <strong>1\/3 pln\u00e9ho zat\u011b\u017eovac\u00edho momentu<\/strong> ale odeb\u00edraj\u00ed pouze <strong>1\/3 spou\u0161t\u011bc\u00edho proudu DOL<\/strong>.<\/p>\n<p><strong>Konfigurace troj\u00faheln\u00edk (\u0394):<\/strong> Vinut\u00ed zapojen\u00e1 paraleln\u011b p\u0159ij\u00edmaj\u00ed pln\u00e9 s\u00ed\u0165ov\u00e9 nap\u011bt\u00ed, dod\u00e1vaj\u00ed 100 % jmenovit\u00e9ho momentu a proudu.<\/p>\n<p>Spou\u0161t\u011b\u010d automaticky p\u0159ech\u00e1z\u00ed z hv\u011bzdy \u2192 do troj\u00faheln\u00edku po p\u0159ednastaven\u00e9m zpo\u017ed\u011bn\u00ed (obvykle 5-15 sekund), co\u017e umo\u017e\u0148uje motoru plynule zrychlit p\u0159ed p\u0159epnut\u00edm na pln\u00fd v\u00fdkon.<\/p>\n<figure style=\"text-align: center; margin: 20px 0;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto;\" src=\"https:\/\/img.viox.com\/VIOX-star-delta-starter-components-installed-in-industrial-control-panel-with-three-contactors-and-timer-relay.webp\" alt=\"VIOX star-delta starter components installed in industrial control panel with three contactors and timer relay\" \/><figcaption style=\"font-style: italic; color: #555; margin-top: 10px;\">Komponenty spou\u0161t\u011b\u010de hv\u011bzda-troj\u00faheln\u00edk VIOX instalovan\u00e9 v pr\u016fmyslov\u00e9m ovl\u00e1dac\u00edm panelu se t\u0159emi styka\u010di a \u010dasov\u00fdm rel\u00e9<\/figcaption><\/figure>\n<h3>Pro\u010d je to d\u016fle\u017eit\u00e9 pro va\u0161e projekty<\/h3>\n<p><strong>Pro sol\u00e1rn\u00ed EPC:<\/strong> P\u0159i dimenzov\u00e1n\u00ed st\u0159\u00edda\u010d\u016f a AC spojek zabra\u0148uje spou\u0161t\u011bn\u00ed hv\u011bzda-troj\u00faheln\u00edk fale\u0161n\u00fdm v\u00fdpadk\u016fm zp\u016fsoben\u00fdm n\u00e1b\u011bhov\u00fdm proudem \u010derpadla nebo kompresoru. \u010cerpadlo o v\u00fdkonu 22 kW na st\u0159\u00edda\u010di o v\u00fdkonu 30 kW? \u017d\u00e1dn\u00fd probl\u00e9m se spou\u0161t\u011bn\u00edm hv\u011bzda-troj\u00faheln\u00edk \u2013 ale okam\u017eit\u011b vypadne p\u0159i DOL.<\/p>\n<p><strong>Pro v\u00fdrobce rozvad\u011b\u010d\u016f:<\/strong> Hv\u011bzda-troj\u00faheln\u00edk je <strong>ide\u00e1ln\u00ed kompromis mezi cenou a v\u00fdkonem<\/strong>:<\/p>\n<ul>\n<li>o 40 % levn\u011bj\u0161\u00ed ne\u017e frekven\u010dn\u00ed m\u011bni\u010de pro aplikace s pevnou rychlost\u00ed<\/li>\n<li>Nulov\u00e9 harmonick\u00e9 (na rozd\u00edl od frekven\u010dn\u00edch m\u011bni\u010d\u016f, kter\u00e9 vy\u017eaduj\u00ed drah\u00e9 filtry)<\/li>\n<li>Vy\u017eaduje pouze standardn\u00ed komponenty \u2013 \u017e\u00e1dn\u00e9 propriet\u00e1rn\u00ed n\u00e1hradn\u00ed d\u00edly<\/li>\n<\/ul>\n<h2>Z\u00e1kladn\u00ed komponenty: Strategie kusovn\u00edku VIOX<\/h2>\n<p>Kompletn\u00ed spou\u0161t\u011b\u010d hv\u011bzda-troj\u00faheln\u00edk vy\u017eaduje <strong>6 z\u00e1kladn\u00edch komponent<\/strong>. Zde je z\u00e1sadn\u00ed poznatek, kter\u00fd v\u011bt\u0161in\u011b p\u0159\u00edru\u010dek chyb\u00ed: <strong>m\u016f\u017eete strategicky zmen\u0161it komponenty<\/strong> bez ohro\u017een\u00ed bezpe\u010dnosti.<\/p>\n<h3>Rozpis komponent<\/h3>\n<table style=\"border-collapse: collapse; width: 100%; margin: 20px 0;\" border=\"1\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th style=\"padding: 10px;\">Komponenta<\/th>\n<th style=\"padding: 10px;\">Funkce<\/th>\n<th style=\"padding: 10px;\">Sizing Rule<\/th>\n<th style=\"padding: 10px;\">P\u0159\u00edklad d\u00edlu VIOX<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 10px;\"><a href=\"https:\/\/test.viox.com\/cs\/ac-contactor\/\"><strong>Hlavn\u00ed styka\u010d (K1)<\/strong><\/a><\/td>\n<td style=\"padding: 10px;\">P\u0159ipojuje motor k nap\u00e1jen\u00ed<\/td>\n<td style=\"padding: 10px;\">Jmenovit\u00fd proud AC3 \u2265 jmenovit\u00fd proud motoru<\/td>\n<td style=\"padding: 10px;\">VX-CJX2-6511 (65A)<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\"><strong>Styka\u010d hv\u011bzda (K2)<\/strong><\/td>\n<td style=\"padding: 10px;\">Vytv\u00e1\u0159\u00ed spojen\u00ed Y b\u011bhem spou\u0161t\u011bn\u00ed<\/td>\n<td style=\"padding: 10px;\">Jmenovit\u00fd proud AC3 \u2265 0,58\u00d7 jmenovit\u00fd proud motoru<\/td>\n<td style=\"padding: 10px;\">VX-CJX2-4011 (40A)<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\"><strong>Styka\u010d troj\u00faheln\u00edk (K3)<\/strong><\/td>\n<td style=\"padding: 10px;\">Vytv\u00e1\u0159\u00ed spojen\u00ed \u0394 p\u0159i pln\u00e9 rychlosti<\/td>\n<td style=\"padding: 10px;\">Jmenovit\u00fd proud AC3 \u2265 jmenovit\u00fd proud motoru<\/td>\n<td style=\"padding: 10px;\">VX-CJX2-6511 (65A)<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\"><a href=\"https:\/\/test.viox.com\/cs\/timer-relay\/\"><strong>\u010casova\u010d Rel\u00e9<\/strong><\/a><\/td>\n<td style=\"padding: 10px;\">\u0158\u00edd\u00ed \u010dasov\u00e1n\u00ed p\u0159echodu<\/td>\n<td style=\"padding: 10px;\">Nastaviteln\u00e9 zpo\u017ed\u011bn\u00ed 5-15 s<\/td>\n<td style=\"padding: 10px;\">VX-H3CR-A8<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\"><a href=\"https:\/\/test.viox.com\/cs\/produkt\/jr36-thermal-overload-relay\/\"><strong>Tepeln\u00e9 p\u0159et\u00ed\u017een\u00ed<\/strong><\/a><\/td>\n<td style=\"padding: 10px;\">Ochrana motoru<\/td>\n<td style=\"padding: 10px;\">Nastaveno na proud na typov\u00e9m \u0161t\u00edtku motoru<\/td>\n<td style=\"padding: 10px;\">VX-LR2-D3353<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\"><a href=\"https:\/\/test.viox.com\/cs\/mcb\/\"><strong>Jisti\u010d<\/strong><\/a><\/td>\n<td style=\"padding: 10px;\">Ochrana proti zkratu<\/td>\n<td style=\"padding: 10px;\">V\u00fdkon motoru dle <a href=\"https:\/\/test.viox.com\/cs\/how-to-select-contactors-and-circuit-breakers-based-on-motor-power\/\">Tabulky NEC<\/a><\/td>\n<td style=\"padding: 10px;\">VX-DZ47-63 C63<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>Rozpis n\u00e1klad\u016f (p\u0159\u00edklad motoru o v\u00fdkonu 30 kW):<\/strong><\/p>\n<ul>\n<li>Hlavn\u00ed styka\u010d (65A): 1 445 K\u010d<\/li>\n<li>Styka\u010d hv\u011bzda (40A): 1 132 K\u010d<\/li>\n<li>Styka\u010d troj\u00faheln\u00edk (65A): 1 445 K\u010d<\/li>\n<li>\u010casov\u00e9 rel\u00e9: $28<\/li>\n<li>Tepeln\u00e1 ochrana proti p\u0159et\u00ed\u017een\u00ed: $35<\/li>\n<li>Jisti\u010d: $18<\/li>\n<li><strong>Celkem: $203<\/strong> vs. $850+ pro 30kW VFD<\/li>\n<\/ul>\n<h3>Triky se zmen\u0161en\u00edm styka\u010de hv\u011bzda<\/h3>\n<p>Zde je technick\u00fd vhled, kter\u00fd v\u00e1m u\u0161et\u0159\u00ed 20% na n\u00e1kladech na komponenty:<\/p>\n<p>B\u011bhem zapojen\u00ed do hv\u011bzdy, <strong>ka\u017ed\u00e9 vinut\u00ed motoru p\u0159en\u00e1\u0161\u00ed pouze 1\/\u221a3 f\u00e1zov\u00e9ho proudu<\/strong>. To znamen\u00e1:<\/p>\n<ul>\n<li>K2 (styka\u010d hv\u011bzda) m\u016f\u017ee m\u00edt jmenovit\u00fd proud <strong>58% jmenovit\u00e9ho proudu motoru (FLC)<\/strong><\/li>\n<li>K3 (styka\u010d troj\u00faheln\u00edk) mus\u00ed odpov\u00eddat FLC motoru, proto\u017ee sp\u00edn\u00e1 p\u0159i pln\u00e9m zat\u00ed\u017een\u00ed<\/li>\n<\/ul>\n<p><strong>P\u0159\u00edklad pro 30kW\/400V motor (FLC = 57A):<\/strong><\/p>\n<ul>\n<li>K1 &amp; K3: 65A styka\u010de (kategorie AC3)<\/li>\n<li>K2: 40A styka\u010d je dosta\u010duj\u00edc\u00ed (57A \u00d7 0.58 = 33A)<\/li>\n<\/ul>\n<p>Porozum\u011bn\u00ed <a href=\"https:\/\/test.viox.com\/cs\/electrical-standards-for-contactors-understanding-ac1-ac2-ac3-ac4-dc1-dc2-and-dc3-utilization-categories\/\">Kategorie vyu\u017eit\u00ed styka\u010d\u016f AC3<\/a> je zde kritick\u00e1\u2014nikdy nepou\u017e\u00edvejte styka\u010de s jmenovit\u00fdm proudem AC1 pro spou\u0161t\u011bn\u00ed motoru.<\/p>\n<h2>Kompletn\u00ed sch\u00e9mata zapojen\u00ed<\/h2>\n<h3>Silov\u00fd obvod (3-f\u00e1zov\u00e9 p\u0159ipojen\u00ed)<\/h3>\n<figure style=\"text-align: center; margin: 20px 0;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto;\" src=\"https:\/\/img.viox.com\/Star-delta-starter-power-circuit-wiring-diagram-showing-three-phase-motor-connections-and-VIOX-contactors.webp\" alt=\"Star-delta starter power circuit wiring diagram showing three-phase motor connections and VIOX contactors\" \/><figcaption style=\"font-style: italic; color: #555; margin-top: 10px;\">Sch\u00e9ma zapojen\u00ed silov\u00e9ho obvodu spou\u0161t\u011b\u010de hv\u011bzda-troj\u00faheln\u00edk zobrazuj\u00edc\u00ed t\u0159\u00edf\u00e1zov\u00e9 p\u0159ipojen\u00ed motoru a styka\u010de VIOX<\/figcaption><\/figure>\n<p><strong>Kritick\u00e9 pozn\u00e1mky k zapojen\u00ed:<\/strong><\/p>\n<ul>\n<li>Svorky motoru <strong>U2, V2, W2<\/strong> (konce vinut\u00ed) mus\u00ed b\u00fdt p\u0159\u00edstupn\u00e9\u2014standard pro motory s v\u00fdkonem &gt;5.5kW<\/li>\n<li><strong>Nikdy nezap\u00ednejte K2 a K3 sou\u010dasn\u011b<\/strong>\u2014to vytvo\u0159\u00ed zkrat mezi f\u00e1zemi<\/li>\n<li>Tepeln\u00e1 ochrana proti p\u0159et\u00ed\u017een\u00ed F2 mus\u00ed chr\u00e1nit spole\u010dnou cestu (mezi K1 a motorem), nikoli jednotliv\u00e1 vinut\u00ed<\/li>\n<\/ul>\n<h3>\u0158\u00eddic\u00ed obvod (n\u00edzkonap\u011b\u0165ov\u00e1 logika)<\/h3>\n<figure style=\"text-align: center; margin: 20px 0;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto;\" src=\"https:\/\/img.viox.com\/Star-delta-starter-control-circuit-wiring-diagram-with-timer-relay-and-interlocking-contacts.webp\" alt=\"Star-delta starter control circuit wiring diagram with timer relay and interlocking contacts\" \/><figcaption style=\"font-style: italic; color: #555; margin-top: 10px;\">Sch\u00e9ma zapojen\u00ed \u0159\u00eddic\u00edho obvodu spou\u0161t\u011b\u010de hv\u011bzda-troj\u00faheln\u00edk s \u010dasov\u00fdm rel\u00e9 a blokovac\u00edmi kontakty<\/figcaption><\/figure>\n<p><strong>Sekvence \u0159\u00eddic\u00ed logiky:<\/strong><\/p>\n<ol>\n<li><strong>Stiskn\u011bte START:<\/strong> K1 se aktivuje \u2192 pomocn\u00fd kontakt K1 (13-14) se sepne \u2192 K2 se aktivuje (re\u017eim hv\u011bzda)<\/li>\n<li><strong>Po zpo\u017ed\u011bn\u00ed \u010dasova\u010de:<\/strong> Kontakty K1T se p\u0159epnou \u2192 K2 se deaktivuje, K3 se aktivuje (re\u017eim troj\u00faheln\u00edk)<\/li>\n<li><strong>Stiskn\u011bte STOP:<\/strong> K1 se deaktivuje \u2192 cel\u00fd obvod se resetuje<\/li>\n<\/ol>\n<p><strong>Blokovac\u00ed bezpe\u010dnostn\u00ed opat\u0159en\u00ed:<\/strong><\/p>\n<ul>\n<li>Norm\u00e1ln\u011b zav\u0159en\u00fd kontakt K2 (21-22) v s\u00e9rii s c\u00edvkou K3<\/li>\n<li>Norm\u00e1ln\u011b zav\u0159en\u00fd kontakt K3 (21-22) v s\u00e9rii s c\u00edvkou K2<\/li>\n<li>To zaji\u0161\u0165uje mechanickou nemo\u017enost sou\u010dasn\u00e9ho sepnut\u00ed<\/li>\n<\/ul>\n<p>Pro podrobn\u00fd n\u00e1vod k <a href=\"https:\/\/test.viox.com\/cs\/how-to-wire-a-time-relay-for-a-motor-starter\/\">princip\u016fm zapojen\u00ed \u010dasov\u00e9ho rel\u00e9<\/a>, viz na\u0161e specializovan\u00e1 p\u0159\u00edru\u010dka.<\/p>\n<h2>Pr\u016fvodce dimenzov\u00e1n\u00edm: V\u00fdpo\u010dty z re\u00e1ln\u00e9ho sv\u011bta<\/h2>\n<h3>V\u00fdkon motoru k jmenovit\u00e9mu proudu komponent (400V, 50Hz)<\/h3>\n<table style=\"border-collapse: collapse; width: 100%; margin: 20px 0;\" border=\"1\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th style=\"padding: 10px;\">V\u00fdkon motoru<\/th>\n<th style=\"padding: 10px;\">Proud p\u0159i pln\u00e9m zat\u00ed\u017een\u00ed<\/th>\n<th style=\"padding: 10px;\">Jmenovit\u00fd proud K1\/K3<\/th>\n<th style=\"padding: 10px;\">Jmenovit\u00fd proud K2<\/th>\n<th style=\"padding: 10px;\">Breaker (jisti\u010d)<\/th>\n<th style=\"padding: 10px;\">Tepeln\u00e9 p\u0159et\u00ed\u017een\u00ed<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 10px;\">15kW<\/td>\n<td style=\"padding: 10px;\">29A<\/td>\n<td style=\"padding: 10px;\">32A (AC3)<\/td>\n<td style=\"padding: 10px;\">20A (AC3)<\/td>\n<td style=\"padding: 10px;\">C40<\/td>\n<td style=\"padding: 10px;\">30-32A<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\">22kW<\/td>\n<td style=\"padding: 10px;\">42A<\/td>\n<td style=\"padding: 10px;\">50A (AC3)<\/td>\n<td style=\"padding: 10px;\">25A (AC3)<\/td>\n<td style=\"padding: 10px;\">C63<\/td>\n<td style=\"padding: 10px;\">40-44A<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\">30kW<\/td>\n<td style=\"padding: 10px;\">57A<\/td>\n<td style=\"padding: 10px;\">65A (AC3)<\/td>\n<td style=\"padding: 10px;\">40A (AC3)<\/td>\n<td style=\"padding: 10px;\">C80<\/td>\n<td style=\"padding: 10px;\">55-60A<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\">45 kW<\/td>\n<td style=\"padding: 10px;\">85A<\/td>\n<td style=\"padding: 10px;\">95 A (AC3)<\/td>\n<td style=\"padding: 10px;\">50A (AC3)<\/td>\n<td style=\"padding: 10px;\">C125<\/td>\n<td style=\"padding: 10px;\">80-88 A<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\">55 kW<\/td>\n<td style=\"padding: 10px;\">105 A<\/td>\n<td style=\"padding: 10px;\">115 A (AC3)<\/td>\n<td style=\"padding: 10px;\">65A (AC3)<\/td>\n<td style=\"padding: 10px;\">C160<\/td>\n<td style=\"padding: 10px;\">100-110 A<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>Sn\u00ed\u017een\u00ed nap\u011bt\u00ed:<\/strong> Pro syst\u00e9my 380 V n\u00e1sobte proudy 1,05. Pro 440 V n\u00e1sobte 0,91.<\/p>\n<h3>Orienta\u010dn\u00ed pravidla pro nastaven\u00ed \u010dasova\u010de<\/h3>\n<p>P\u0159epnut\u00ed hv\u011bzda \u2192 troj\u00faheln\u00edk mus\u00ed nastat <strong>pot\u00e9, co motor dos\u00e1hne 85-90 % jmenovit\u00fdch ot\u00e1\u010dek<\/strong> (obvykle 5-15 sekund v z\u00e1vislosti na setrva\u010dnosti z\u00e1t\u011b\u017ee):<\/p>\n<ul>\n<li><strong>Lehk\u00e9 z\u00e1t\u011b\u017ee<\/strong> (ventil\u00e1tory, odst\u0159ediv\u00e1 \u010derpadla): 5-8 sekund<\/li>\n<li><strong>St\u0159edn\u00ed z\u00e1t\u011b\u017ee<\/strong> (dopravn\u00edky, kompresory): 8-12 sekund<\/li>\n<li><strong>T\u011b\u017ek\u00e9 z\u00e1t\u011b\u017ee<\/strong> (drti\u010de, p\u00edstov\u00e1 \u010derpadla): 12-15 sekund<\/li>\n<\/ul>\n<p><strong>Varov\u00e1n\u00ed:<\/strong> P\u0159\u00edli\u0161 brzk\u00e9 p\u0159epnut\u00ed zp\u016fsob\u00ed sekund\u00e1rn\u00ed proudov\u00fd \u0161pi\u010dku (4-5\u00d7 FLC), kter\u00e1 zma\u0159\u00ed \u00fa\u010del. B\u011bhem uv\u00e1d\u011bn\u00ed do provozu sledujte ot\u00e1\u010dky motoru pomoc\u00ed tachometru.<\/p>\n<h2>Strategie v\u00fdb\u011bru komponent<\/h2>\n<h3>Kdy zvolit kterou t\u0159\u00eddu styka\u010de<\/h3>\n<p>Porozum\u011bn\u00ed <a href=\"https:\/\/test.viox.com\/cs\/contactors-vs-relays-understanding-the-key-differences\/\">rozd\u00edl mezi styka\u010di a rel\u00e9<\/a> je z\u00e1sadn\u00ed, ale zde je n\u00e1vod specifick\u00fd pro motory:<\/p>\n<p><strong>Kategorie AC3 (Sp\u00edn\u00e1n\u00ed motoru):<\/strong><\/p>\n<ul>\n<li>Vyp\u00ednac\u00ed schopnost: 6-10\u00d7 jmenovit\u00fd proud<\/li>\n<li>Elektrick\u00e1 \u017eivotnost: 100 000-200 000 operac\u00ed<\/li>\n<li><strong>Pou\u017eit\u00ed pro:<\/strong> K1, K2, K3 ve v\u0161ech motorov\u00fdch spou\u0161t\u011b\u010d\u00edch<\/li>\n<\/ul>\n<p><strong>Kategorie AC1 (Odporov\u00e1 z\u00e1t\u011b\u017e):<\/strong><\/p>\n<ul>\n<li>Vyp\u00ednac\u00ed schopnost: Pouze 1,5\u00d7 jmenovit\u00fd proud<\/li>\n<li><strong>Nikdy nepou\u017e\u00edvejte pro spou\u0161t\u011bn\u00ed motoru<\/strong>\u2014kontakty se sva\u0159\u00ed po 50-100 spu\u0161t\u011bn\u00edch<\/li>\n<\/ul>\n<h3>Dimenzov\u00e1n\u00ed tepeln\u00e9 ochrany<\/h3>\n<p><a href=\"https:\/\/test.viox.com\/cs\/what-are-thermal-overload-relays\/\">Tepeln\u00e1 nadproudov\u00e1 rel\u00e9<\/a> mus\u00ed b\u00fdt nastaveno na <strong>jmenovit\u00fd proud motoru<\/strong>, nikoli jmenovit\u00fd proud styka\u010de. B\u011b\u017en\u00e9 chyby:<\/p>\n<ul>\n<li>\u274c Nastaven\u00ed na 1,25\u00d7 FLC motoru (to je dimenzov\u00e1n\u00ed jisti\u010de, nikoli p\u0159et\u00ed\u017een\u00ed)<\/li>\n<li>\u274c Pou\u017e\u00edv\u00e1n\u00ed styka\u010dem integrovan\u00fdch ochran proti p\u0159et\u00ed\u017een\u00ed bez samostatn\u00e9ho nastaven\u00ed<\/li>\n<li>\u2705 Nastaviteln\u00fd rozsah pokr\u00fdvaj\u00edc\u00ed 90-110 % jmenovit\u00e9ho proudu<\/li>\n<li>\u2705 Vypnut\u00ed t\u0159\u00eddy 10 pro motory s norm\u00e1ln\u00edmi dobami spou\u0161t\u011bn\u00ed (&lt;10 s)<\/li>\n<\/ul>\n<figure style=\"text-align: center; margin: 20px 0;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto;\" src=\"https:\/\/img.viox.com\/Adjusting-VIOX-thermal-overload-relay-current-setting-for-star-delta-motor-starter-protection.webp\" alt=\"Adjusting VIOX thermal overload relay current setting for star-delta motor starter protection\" \/><figcaption style=\"font-style: italic; color: #555; margin-top: 10px;\">Nastaven\u00ed proudu tepeln\u00e9ho p\u0159et\u011b\u017eovac\u00edho rel\u00e9 VIOX pro ochranu spou\u0161t\u011b\u010de motoru hv\u011bzda-troj\u00faheln\u00edk<\/figcaption><\/figure>\n<h2>Srovn\u00e1vac\u00ed tabulka: Hv\u011bzda-troj\u00faheln\u00edk vs. Alternativy<\/h2>\n<table style=\"border-collapse: collapse; width: 100%; margin: 20px 0;\" border=\"1\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th style=\"padding: 10px;\">Parametr<\/th>\n<th style=\"padding: 10px;\">Spou\u0161t\u011b\u010d DOL<\/th>\n<th style=\"padding: 10px;\">Spou\u0161t\u011b\u010d hv\u011bzda-troj\u00faheln\u00edk<\/th>\n<th style=\"padding: 10px;\">VFD (pevn\u00e1 rychlost)<\/th>\n<th style=\"padding: 10px;\">Soft Starter<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 10px;\"><strong>Po\u010d\u00e1te\u010dn\u00ed proud<\/strong><\/td>\n<td style=\"padding: 10px;\">5-8\u00d7 FLC<\/td>\n<td style=\"padding: 10px;\">1,8-2,5\u00d7 FLC<\/td>\n<td style=\"padding: 10px;\">1,5-2\u00d7 FLC<\/td>\n<td style=\"padding: 10px;\">2-4\u00d7 FLC<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\"><strong>Rozb\u011bhov\u00fd moment<\/strong><\/td>\n<td style=\"padding: 10px;\">100%<\/td>\n<td style=\"padding: 10px;\">33 % (m\u016f\u017ee selhat u t\u011b\u017ek\u00fdch z\u00e1t\u011b\u017e\u00ed)<\/td>\n<td style=\"padding: 10px;\">100%<\/td>\n<td style=\"padding: 10px;\">50-80%<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\"><strong>Cena komponent (30 kW)<\/strong><\/td>\n<td style=\"padding: 10px;\">$65<\/td>\n<td style=\"padding: 10px;\">$203<\/td>\n<td style=\"padding: 10px;\">$850+<\/td>\n<td style=\"padding: 10px;\">$420<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\"><strong>Doba instalace<\/strong><\/td>\n<td style=\"padding: 10px;\">2 hodiny<\/td>\n<td style=\"padding: 10px;\">4 hodiny<\/td>\n<td style=\"padding: 10px;\">6 hodin<\/td>\n<td style=\"padding: 10px;\">3 hodiny<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\"><strong>B\u011b\u017en\u00e9 body selh\u00e1n\u00ed<\/strong><\/td>\n<td style=\"padding: 10px;\">\u017d\u00e1dn\u00e9 (jednoduch\u00e9)<\/td>\n<td style=\"padding: 10px;\">\u010casov\u00e9 rel\u00e9, kontakty K2\/K3<\/td>\n<td style=\"padding: 10px;\">Nap\u00e1jec\u00ed modul, PCB<\/td>\n<td style=\"padding: 10px;\">Tyristor, chladic\u00ed ventil\u00e1tor<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\"><strong>Harmonick\u00e9<\/strong><\/td>\n<td style=\"padding: 10px;\">\u017d\u00e1dn\u00fd<\/td>\n<td style=\"padding: 10px;\">\u017d\u00e1dn\u00fd<\/td>\n<td style=\"padding: 10px;\">15-40 % THD (vy\u017eaduje filtry)<\/td>\n<td style=\"padding: 10px;\">Minim\u00e1ln\u00ed<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\"><strong>Frekvence \u00fadr\u017eby<\/strong><\/td>\n<td style=\"padding: 10px;\">Ro\u010dn\u011b<\/td>\n<td style=\"padding: 10px;\">Ro\u010dn\u011b<\/td>\n<td style=\"padding: 10px;\">\u010ctvrtletn\u00ed<\/td>\n<td style=\"padding: 10px;\">Pololetn\u00ed<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\"><strong>Po\u017eadavek na kabel motoru<\/strong><\/td>\n<td style=\"padding: 10px;\">6\u017eilov\u00fd (3+PE)<\/td>\n<td style=\"padding: 10px;\">6\u017eilov\u00fd (6+PE)<\/td>\n<td style=\"padding: 10px;\">4\u017eilov\u00fd (3+PE)<\/td>\n<td style=\"padding: 10px;\">4\u017eilov\u00fd (3+PE)<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\"><strong>Nejlep\u0161\u00ed aplikace<\/strong><\/td>\n<td style=\"padding: 10px;\">&lt;7,5 kW nebo neomezen\u00fd z\u00e1b\u011brov\u00fd proud OK<\/td>\n<td style=\"padding: 10px;\">7,5-75 kW pevn\u00e1 rychlost<\/td>\n<td style=\"padding: 10px;\">Kritick\u00e1 prom\u011bnn\u00e1 rychlost<\/td>\n<td style=\"padding: 10px;\">Priorita plynul\u00e9ho n\u00e1b\u011bhu<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>Anal\u00fdza n\u00e1klad\u016f a p\u0159\u00ednos\u016f (5let\u00e9 celkov\u00e9 n\u00e1klady na vlastnictv\u00ed pro motor 30 kW):<\/strong><\/p>\n<ul>\n<li><strong>Hv\u011bzda-troj\u00faheln\u00edk:<\/strong> $203 p\u0159edem + $50\/rok \u00fadr\u017eba = <strong>Celkem $453<\/strong><\/li>\n<li><strong>Frekven\u010dn\u00ed m\u011bni\u010d (VFD):<\/strong> $850 p\u0159edem + $180\/rok \u00fadr\u017eba + $200 harmonick\u00fd filtr = <strong>Celkem $2,150<\/strong><\/li>\n<\/ul>\n<p>Pro aplikace s pevnou rychlost\u00ed poskytuje spou\u0161t\u011b\u010d hv\u011bzda-troj\u00faheln\u00edk \u00fasporu n\u00e1klad\u016f 79% bez kompromis\u016f ve v\u00fdkonu.<\/p>\n<h2>B\u011b\u017en\u00e9 chyby a odstra\u0148ov\u00e1n\u00ed probl\u00e9m\u016f<\/h2>\n<h3>Chyby n\u00e1vrhu, kter\u00e9 zp\u016fsobuj\u00ed selh\u00e1n\u00ed<\/h3>\n<p><strong>1. Nespr\u00e1vn\u00e9 zpo\u017ed\u011bn\u00ed \u010dasova\u010de (40% probl\u00e9m\u016f v ter\u00e9nu)<\/strong><\/p>\n<p><strong>P\u0159\u00edznak:<\/strong> Siln\u00fd proudov\u00fd \u0161pi\u010dka b\u011bhem p\u0159echodu hv\u011bzda \u2192 troj\u00faheln\u00edk, obt\u011b\u017euj\u00edc\u00ed vyp\u00edn\u00e1n\u00ed jisti\u010de.<\/p>\n<p><strong>Hlavn\u00ed p\u0159\u00ed\u010dina:<\/strong> \u010casova\u010d nastaven na &lt;5 sekund u z\u00e1t\u011b\u017e\u00ed s vysokou setrva\u010dnost\u00ed. Ot\u00e1\u010dky motoru dos\u00e1hnou pouze 60-70% p\u0159ed p\u0159epnut\u00edm.<\/p>\n<p><strong>Oprava:<\/strong> Prodlu\u017ete na 12-15 sekund. Ov\u011b\u0159te pomoc\u00ed kle\u0161\u0165ov\u00e9ho amp\u00e9rmetru b\u011bhem p\u0159echodu \u2013 proud by m\u011bl klesnout na 1,2\u00d7 FLC p\u0159ed p\u0159epnut\u00edm.<\/p>\n<hr \/>\n<p><strong>2. Chyb\u011bj\u00edc\u00ed blokov\u00e1n\u00ed (25% poruch p\u0159i uv\u00e1d\u011bn\u00ed do provozu)<\/strong><\/p>\n<p><strong>P\u0159\u00edznak:<\/strong> Hlasit\u00e1 r\u00e1na, sp\u00e1len\u00e9 pojistky, po\u0161kozen\u00e9 styka\u010de.<\/p>\n<p><strong>Hlavn\u00ed p\u0159\u00ed\u010dina:<\/strong> K2 i K3 sou\u010dasn\u011b uzav\u0159eny kv\u016fli chyb\u011bj\u00edc\u00edmu mechanick\u00e9mu\/elektrick\u00e9mu blokov\u00e1n\u00ed.<\/p>\n<p><strong>Oprava:<\/strong><\/p>\n<ul>\n<li>P\u0159idejte pomocn\u00e9 rozp\u00ednac\u00ed kontakty, jak je zn\u00e1zorn\u011bno na sch\u00e9matu zapojen\u00ed<\/li>\n<li>Zva\u017ete styka\u010de s vestav\u011bn\u00fdm mechanick\u00fdm blokov\u00e1n\u00edm (\u0159ada VIOX VX-CJX2-IK)<\/li>\n<\/ul>\n<hr \/>\n<p><strong>3. Poddimenzovan\u00fd styka\u010d hv\u011bzdy (15% p\u0159ed\u010dasn\u00fdch selh\u00e1n\u00ed)<\/strong><\/p>\n<p><strong>P\u0159\u00edznak:<\/strong> Kontakty K2 sva\u0159eny po 6-12 m\u011bs\u00edc\u00edch.<\/p>\n<p><strong>Hlavn\u00ed p\u0159\u00ed\u010dina:<\/strong> Pou\u017eit 50% FLC motoru nam\u00edsto pravidla 58%. Hrani\u010dn\u00ed p\u0159i studen\u00fdch startech.<\/p>\n<p><strong>Oprava:<\/strong> Upgradujte K2 na dal\u0161\u00ed standardn\u00ed velikost. Pro motor 57A pou\u017eijte styka\u010d 40A (ne 32A).<\/p>\n<hr \/>\n<p><strong>4. Motor nen\u00ed kompatibiln\u00ed s hv\u011bzdou-troj\u00faheln\u00edkem<\/strong><\/p>\n<p><strong>P\u0159\u00edznak:<\/strong> Spou\u0161t\u011b\u010d funguje, motor se nespust\u00ed.<\/p>\n<p><strong>Hlavn\u00ed p\u0159\u00ed\u010dina:<\/strong> Svorky motoru vyv\u00e1d\u011bj\u00ed pouze U1, V1, W1 (pouze konfigurace troj\u00faheln\u00edku).<\/p>\n<p><strong>Oprava:<\/strong> Ov\u011b\u0159te, zda \u0161t\u00edtek motoru zobrazuje <strong>\u201c\u0394\/Y\u201d nebo \u201c400V\/690V\u201d<\/strong>. Pokud ne, spou\u0161t\u011bn\u00ed hv\u011bzda-troj\u00faheln\u00edk je nemo\u017en\u00e9 \u2013 pou\u017eijte m\u00edsto toho soft start\u00e9r.<\/p>\n<h3>Diagnostick\u00fd v\u00fdvojov\u00fd diagram<\/h3>\n<figure style=\"text-align: center; margin: 20px 0;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto;\" src=\"https:\/\/img.viox.com\/Star-delta-starter-troubleshooting-flowchart-for-diagnosing-motor-starting-failures.webp\" alt=\"Star-delta starter troubleshooting flowchart for diagnosing motor starting failures\" \/><figcaption style=\"font-style: italic; color: #555; margin-top: 10px;\">V\u00fdvojov\u00fd diagram pro odstra\u0148ov\u00e1n\u00ed probl\u00e9m\u016f se spou\u0161t\u011b\u010dem hv\u011bzda-troj\u00faheln\u00edk pro diagnostiku poruch spou\u0161t\u011bn\u00ed motoru<\/figcaption><\/figure>\n<h2>\u010casto Kladen\u00e9 Ot\u00e1zky<\/h2>\n<h3>Jak\u00fd je rozd\u00edl mezi spou\u0161t\u011bn\u00edm hv\u011bzda-troj\u00faheln\u00edk a p\u0159\u00edm\u00fdm spou\u0161t\u011bn\u00edm (DOL)?<\/h3>\n<p><strong>P\u0159\u00edm\u00e9 spou\u0161t\u011bn\u00ed (DOL)<\/strong> p\u0159ipojuje motor okam\u017eit\u011b p\u0159i pln\u00e9m nap\u011bt\u00ed, odeb\u00edr\u00e1 5-8\u00d7 jmenovit\u00fd proud. <strong>Hv\u011bzda-troj\u00faheln\u00edk<\/strong> spou\u0161t\u00ed motor p\u0159i 58% nap\u011bt\u00ed (1\/\u221a3), omezuje z\u00e1b\u011brov\u00fd proud na 1,8-2,5\u00d7 FLC. Kompromis: Spou\u0161t\u011bn\u00ed hv\u011bzda-troj\u00faheln\u00edk poskytuje pouze 33% rozb\u011bhov\u00e9ho momentu, tak\u017ee nebude fungovat pro z\u00e1t\u011b\u017ee s vysokou setrva\u010dnost\u00ed, jako jsou nalo\u017een\u00e9 dopravn\u00edky nebo p\u00edstov\u00e9 kompresory.<\/p>\n<h3>Mohu pou\u017e\u00edt spou\u0161t\u011bn\u00ed hv\u011bzda-troj\u00faheln\u00edk pro v\u0161echny velikosti motor\u016f?<\/h3>\n<p><strong>Praktick\u00fd rozsah: 7,5 kW a\u017e 75 kW.<\/strong> Pod 7,5 kW je DOL dosta\u010duj\u00edc\u00ed a levn\u011bj\u0161\u00ed. Nad 75 kW se mechanick\u00e9 nam\u00e1h\u00e1n\u00ed p\u0159echodu hv\u011bzda \u2192 troj\u00faheln\u00edk st\u00e1v\u00e1 problematick\u00fdm \u2013 preferuj\u00ed se frekven\u010dn\u00ed m\u011bni\u010de nebo spou\u0161t\u011b\u010de s autotransform\u00e1torem. Krom\u011b toho mus\u00ed m\u00edt motory <strong>\u0161est p\u0159\u00edstupn\u00fdch svorek<\/strong> (U1\/U2, V1\/V2, W1\/W2).<\/p>\n<h3>Jak dlouho by m\u011bl b\u00fdt nastaven \u010dasova\u010d hv\u011bzda-troj\u00faheln\u00edk?<\/h3>\n<p><strong>Obecn\u00e9 pravidlo: 5-15 sekund<\/strong>, ale ov\u011b\u0159te b\u011bhem uv\u00e1d\u011bn\u00ed do provozu:<\/p>\n<ul>\n<li>Kle\u0161\u0165ov\u00fd amp\u00e9rmetr na jak\u00e9koli svorce motoru b\u011bhem spou\u0161t\u011bn\u00ed<\/li>\n<li>Proud by m\u011bl klesnout z rozb\u011bhov\u00e9ho \u0161pi\u010dky na 1,2-1,5\u00d7 FLC p\u0159ed vypr\u0161en\u00edm \u010dasova\u010de<\/li>\n<li>Pokud je proud p\u0159i p\u0159ep\u00edn\u00e1n\u00ed st\u00e1le vysok\u00fd, prodlu\u017ete \u010dasova\u010d o 2-3 sekundy<\/li>\n<\/ul>\n<p><strong>Lehk\u00e9 z\u00e1t\u011b\u017ee<\/strong> (ventil\u00e1tory, odst\u0159ediv\u00e1 \u010derpadla): 5-8 s<br \/>\n<strong>St\u0159edn\u00ed z\u00e1t\u011b\u017ee<\/strong> (dopravn\u00edky, kompresory): 8-12 s<br \/>\n<strong>T\u011b\u017ek\u00e9 z\u00e1t\u011b\u017ee<\/strong> (drti\u010de, p\u00edstov\u00e1 \u010derpadla): 12-15 s<\/p>\n<h3>Co se stane, pokud se sou\u010dasn\u011b sepnou styka\u010de hv\u011bzda a troj\u00faheln\u00edk?<\/h3>\n<p><strong>Okam\u017eit\u00fd zkrat.<\/strong> L1, L2, L3 jsou p\u0159\u00edmo propojeny vinut\u00edm motoru, co\u017e vytv\u00e1\u0159\u00ed zkrat mezi f\u00e1zemi. To bude:<\/p>\n<ul>\n<li>Sva\u0159it kontakty styka\u010de neopraviteln\u011b<\/li>\n<li>Vypnout jisti\u010de proti proudu (pokud jsou spr\u00e1vn\u011b dimenzov\u00e1ny)<\/li>\n<li>Potenci\u00e1ln\u011b po\u0161kodit izolaci motoru zkratov\u00fdm proudem (10-20 kA)<\/li>\n<\/ul>\n<p><strong>Prevence:<\/strong> V\u017edy pou\u017e\u00edvejte elektrick\u00e9 blokov\u00e1n\u00ed (NC pomocn\u00e9 kontakty) <strong>a<\/strong> mechanick\u00e9 blokov\u00e1n\u00ed, kde je k dispozici.<\/p>\n<h3>Pro\u010d m\u016fj start\u00e9r hv\u011bzda-troj\u00faheln\u00edk vyp\u00edn\u00e1 jisti\u010d b\u011bhem p\u0159ep\u00edn\u00e1n\u00ed?<\/h3>\n<p>Dv\u011b b\u011b\u017en\u00e9 p\u0159\u00ed\u010diny:<\/p>\n<p><strong>1. P\u0159\u00edli\u0161 kr\u00e1tk\u00fd \u010dasova\u010d:<\/strong> Motor st\u00e1le zrychluje (70-80% rychlosti) p\u0159i p\u0159ep\u00edn\u00e1n\u00ed. N\u00e1hl\u00e9 op\u011btovn\u00e9 p\u0159ipojen\u00ed v Delta vytv\u00e1\u0159\u00ed proudov\u00fd \u0161pi\u010dku 3-4\u00d7. <strong>Oprava:<\/strong> Prodlu\u017ete \u010dasova\u010d na 12-15 sekund.<\/p>\n<p><strong>2. Hv\u011bzdicov\u00fd styka\u010d sva\u0159en\u00fd v sepnut\u00e9m stavu:<\/strong> Pokud se K2 neotev\u0159e, p\u0159epnut\u00ed na K3 vytvo\u0159\u00ed v\u00fd\u0161e uveden\u00fd stav zkratu. <strong>Oprava:<\/strong> Vym\u011b\u0148te K2, pro\u0161et\u0159ete, pro\u010d se sva\u0159il (poddimenzovan\u00fd? Vniknut\u00ed prachu?).<\/p>\n<h3>Mohou start\u00e9ry hv\u011bzda-troj\u00faheln\u00edk ovl\u00e1dat reverzn\u00ed motory?<\/h3>\n<p><strong>Ne p\u0159\u00edmo.<\/strong> Standardn\u00ed start\u00e9ry hv\u011bzda-troj\u00faheln\u00edk poskytuj\u00ed pouze jednosm\u011brn\u00e9 \u0159\u00edzen\u00ed. Pro reverzaci:<\/p>\n<ul>\n<li>P\u0159idejte <strong>p\u00e1r styka\u010d\u016f pro sm\u011br vp\u0159ed\/vzad<\/strong> p\u0159ed obvod hv\u011bzda-troj\u00faheln\u00edk<\/li>\n<li>Zajist\u011bte mechanick\u00e9\/elektrick\u00e9 blokov\u00e1n\u00ed mezi sm\u011brem vp\u0159ed a vzad<\/li>\n<li>To p\u0159id\u00e1v\u00e1 2 dal\u0161\u00ed styka\u010de (typicky rozsah 25A-32A)<\/li>\n<\/ul>\n<p>Pod\u00edvejte se na na\u0161eho pr\u016fvodce <a href=\"https:\/\/test.viox.com\/cs\/contactors-vs-relays-understanding-the-key-differences\/\">obvody \u0159\u00edzen\u00ed motor\u016f<\/a> pro reverzn\u00ed logiku.<\/p>\n<h3>Jak\u00e1 je typick\u00e1 \u017eivotnost komponent start\u00e9ru hv\u011bzda-troj\u00faheln\u00edk?<\/h3>\n<p><strong>Elektrick\u00e1 \u017eivotnost (p\u0159ed v\u00fdm\u011bnou kontakt\u016f):<\/strong><\/p>\n<ul>\n<li><strong>Styka\u010de (K1, K3):<\/strong> 100 000-200 000 operac\u00ed (provoz AC3)<\/li>\n<li><strong>Hv\u011bzdicov\u00fd styka\u010d (K2):<\/strong> 150 000-300 000 operac\u00ed (ni\u017e\u0161\u00ed nam\u00e1h\u00e1n\u00ed)<\/li>\n<li><strong>\u010casov\u00e9 rel\u00e9:<\/strong> 10-15 let (polovodi\u010dov\u00e9) nebo 5-8 let (elektromechanick\u00e9)<\/li>\n<li><strong>Tepeln\u00e1 ochrana:<\/strong> 15-20 let (selh\u00e1v\u00e1 z\u0159\u00eddka, pokud nen\u00ed siln\u011b p\u0159et\u00ed\u017eena)<\/li>\n<\/ul>\n<p><strong>Mechanick\u00e1 \u017eivotnost:<\/strong> Styka\u010de zvl\u00e1dnou 1-5 milion\u016f operac\u00ed bez z\u00e1t\u011b\u017ee. Omezuj\u00edc\u00edm faktorem je v\u017edy elektrick\u00fd oblouk b\u011bhem sp\u00edn\u00e1n\u00ed motoru.<\/p>\n<h2>Z\u00e1v\u011br: Kdy m\u00e1 hv\u011bzda-troj\u00faheln\u00edk smysl<\/h2>\n<p>Pro <strong>motory s pevnou rychlost\u00ed mezi 7,5 kW a 75 kW<\/strong>, spou\u0161t\u011bn\u00ed hv\u011bzda-troj\u00faheln\u00edk nab\u00edz\u00ed optim\u00e1ln\u00ed rovnov\u00e1hu n\u00e1klad\u016f, spolehlivosti a sn\u00ed\u017een\u00ed z\u00e1b\u011brov\u00e9ho proudu. Stoj\u00ed m\u00e9n\u011b ne\u017e frekven\u010dn\u00ed m\u011bni\u010de, negeneruje \u017e\u00e1dn\u00e9 harmonick\u00e9 a pou\u017e\u00edv\u00e1 b\u011b\u017en\u011b dostupn\u00e9 komponenty s glob\u00e1ln\u00ed dostupnost\u00ed.<\/p>\n<p><strong>Kdy zvolit hv\u011bzda-troj\u00faheln\u00edk:<\/strong><\/p>\n<ul>\n<li>\u2705 Aplikace s pevnou rychlost\u00ed (\u010derpadla, ventil\u00e1tory, kompresory)<\/li>\n<li>\u2705 Rozpo\u010dtov\u00e1 omezen\u00ed zakazuj\u00ed frekven\u010dn\u00ed m\u011bni\u010de<\/li>\n<li>\u2705 S\u00ed\u0165 omezuje z\u00e1b\u011brov\u00fd proud &gt;3\u00d7 jmenovit\u00fd proud motoru<\/li>\n<li>\u2705 Motor m\u00e1 p\u0159\u00edstupn\u00fdch \u0161est svorek (konfigurace \u0394\/Y)<\/li>\n<\/ul>\n<p><strong>Kdy se vyhnout hv\u011bzda-troj\u00faheln\u00edku:<\/strong><\/p>\n<ul>\n<li>\u274c Po\u017eadov\u00e1n vysok\u00fd rozb\u011bhov\u00fd moment (&gt;50% jmenovit\u00e9ho momentu)<\/li>\n<li>\u274c Pot\u0159eba variabiln\u00edho provozu<\/li>\n<li>\u274c Motory 75 kW (pou\u017eijte soft start\u00e9r\/frekven\u010dn\u00ed m\u011bni\u010d)<\/li>\n<\/ul>\n<p>Pro kompletn\u00edho pr\u016fvodce v\u00fdb\u011brem komponent se pod\u00edvejte na na\u0161e <a href=\"https:\/\/test.viox.com\/cs\/how-to-select-contactors-and-circuit-breakers-based-on-motor-power\/\">tabulky dimenzov\u00e1n\u00ed jisti\u010d\u016f a styka\u010d\u016f<\/a>\u2014a kontaktujte VIOX pro projektov\u011b specifick\u00e9 kusovn\u00edky s mno\u017estevn\u00edmi cenami.<\/p>\n<figure style=\"text-align: center; margin: 20px 0;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto;\" src=\"https:\/\/img.viox.com\/Installed-VIOX-star-delta-motor-starter-control-panel-in-industrial-facility-with-operating-motor-system.webp\" alt=\"Installed VIOX star-delta motor starter control panel in industrial facility with operating motor system\" \/><figcaption style=\"font-style: italic; color: #555; margin-top: 10px;\">Instalovan\u00fd \u0159\u00eddic\u00ed panel motorov\u00e9ho spou\u0161t\u011b\u010de hv\u011bzda-troj\u00faheln\u00edk VIOX v pr\u016fmyslov\u00e9m za\u0159\u00edzen\u00ed s provozovan\u00fdm motorov\u00fdm syst\u00e9mem<\/figcaption><\/figure>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Why Motor Starting Current Matters (And Costs You Money) When a three-phase induction motor starts directly online (DOL), it draws 5-8 times its rated current for several seconds. For a 30kW motor, this means a brutal 150-240A inrush that: Triggers nuisance breaker trips in undersized installations Causes voltage sags affecting sensitive equipment on the same [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":21174,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-21173","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/test.viox.com\/cs\/wp-json\/wp\/v2\/posts\/21173","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/test.viox.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/test.viox.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/test.viox.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/test.viox.com\/cs\/wp-json\/wp\/v2\/comments?post=21173"}],"version-history":[{"count":1,"href":"https:\/\/test.viox.com\/cs\/wp-json\/wp\/v2\/posts\/21173\/revisions"}],"predecessor-version":[{"id":21175,"href":"https:\/\/test.viox.com\/cs\/wp-json\/wp\/v2\/posts\/21173\/revisions\/21175"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/test.viox.com\/cs\/wp-json\/wp\/v2\/media\/21174"}],"wp:attachment":[{"href":"https:\/\/test.viox.com\/cs\/wp-json\/wp\/v2\/media?parent=21173"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/test.viox.com\/cs\/wp-json\/wp\/v2\/categories?post=21173"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/test.viox.com\/cs\/wp-json\/wp\/v2\/tags?post=21173"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}