{"id":1785,"date":"2026-09-27T06:34:01","date_gmt":"2026-09-27T06:34:01","guid":{"rendered":"https:\/\/ritoks.com\/?p=1785"},"modified":"2026-10-04T06:58:11","modified_gmt":"2026-10-04T06:58:11","slug":"2-pole-vs-4-pole-dc-circuit-breakers","status":"publish","type":"post","link":"https:\/\/ritoks.com\/cs\/2-pole-vs-4-pole-dc-circuit-breakers\/","title":{"rendered":"2p\u00f3lov\u00e9 vs. 4p\u00f3lov\u00e9 jisti\u010de pro stejnosm\u011brn\u00fd proud: konstrukce a ot\u00e1zky t\u00fdkaj\u00edc\u00ed se v\u00fdb\u011bru"},"content":{"rendered":"

Two-pole and four-pole DC circuit breakers are not simply small and large versions of the same answer. Pole count affects the permitted connection path, how conductors are disconnected and sometimes the voltage at which the complete device has documented interruption capability. The correct arrangement depends on system earthing, voltage, fault-current direction and the manufacturer’s exact wiring diagram.<\/p>\n

Toto srovn\u00e1n\u00ed p\u0159edstavuje r\u00e1mec pro posouzen\u00ed ot\u00e1zek ur\u010den\u00fd pro kupuj\u00edc\u00ed proudov\u00fdch jisti\u010d\u016f (MCB) stejnosm\u011brn\u00e9ho proudu. Neznamen\u00e1 to, \u017ee \u010dty\u0159p\u00f3lov\u00e9 jisti\u010de jsou automaticky bezpe\u010dn\u011bj\u0161\u00ed ani \u017ee dvoup\u00f3lov\u00e9 jisti\u010de v\u017edy posta\u010duj\u00ed. \u00dadaje o jmenovit\u00e9m proudu a zapojen\u00ed se mus\u00ed vztahovat k navrhovan\u00e9mu k\u00f3du objedn\u00e1vky, nikoli k sousedn\u00edmu produktu v katalogu.<\/p>\n

Nejprve rozli\u0161te vodi\u010de od p\u00f3l\u016f jisti\u010de<\/h2>\n

Dvouvodi\u010dov\u00fd stejnosm\u011brn\u00fd syst\u00e9m m\u00e1 kladn\u00fd a z\u00e1porn\u00fd vodi\u010d, ale tato skute\u010dnost sama o sob\u011b neur\u010duje po\u010det pot\u0159ebn\u00fdch p\u00f3l\u016f jisti\u010de. V\u00fdrobce m\u016f\u017ee stanovit, \u017ee pro dosa\u017een\u00ed ur\u010dit\u00e9 jmenovit\u00e9 stejnosm\u011brn\u00e9 nap\u011bt\u00ed mus\u00ed b\u00fdt pod\u00e9l jednoho vodi\u010de zapojeno v\u00edce ne\u017e jeden p\u00f3l do s\u00e9rie. Jin\u00e9 uspo\u0159\u00e1d\u00e1n\u00ed m\u016f\u017ee vyu\u017e\u00edvat p\u00f3ly v obou vodi\u010d\u00edch. To, co je skute\u010dn\u011b odpojeno, ur\u010duje v\u00fdkres, nikoli slovn\u00ed ozna\u010den\u00ed \u201c\u010dty\u0159p\u00f3lov\u00fd\u201d.<\/p>\n

Na jednop\u00f3lov\u00e9m sch\u00e9matu projektu ozna\u010dte ka\u017ed\u00e9 p\u0159ipojen\u00ed vodi\u010de, zdroje a z\u00e1t\u011b\u017ee. Pot\u00e9 nakreslete navrhovanou proudovou cestu p\u0159es ka\u017ed\u00fd p\u00f3l. Pokud je zapot\u0159eb\u00ed propojovac\u00ed prvek, uve\u010fte, zda se jedn\u00e1 o p\u0159\u00edslu\u0161enstv\u00ed schv\u00e1len\u00e9 v\u00fdrobcem, dodan\u00e9 p\u0159ipojen\u00ed nebo zak\u00e1zanou \u00fapravu provedenou v ter\u00e9nu. Nezahrnujte extern\u00ed svorky a vych\u00e1zejte z toho, \u017ee ka\u017ed\u00e1 svorka odpov\u00edd\u00e1 samostatn\u011b chr\u00e1n\u011bn\u00e9mu vodi\u010di.<\/p>\n

Zjist\u011bte, zda m\u00e1 jisti\u010d p\u0159eru\u0161it proud v jedn\u00e9 polarit\u011b, v obou polarit\u00e1ch nebo ve stanoven\u00e9 s\u00e9riov\u00e9 v\u011btvi. Na toto rozhodnut\u00ed maj\u00ed vliv uzemn\u011bn\u00ed syst\u00e9mu a sc\u00e9n\u00e1\u0159e poruch. Uspo\u0159\u00e1d\u00e1n\u00ed s uzemn\u011bn\u00fdm vodi\u010dem se m\u016f\u017ee posuzovat jinak ne\u017e u izolovan\u00e9ho syst\u00e9mu; technik mus\u00ed uplatnit p\u0159\u00edslu\u0161n\u00e1 instala\u010dn\u00ed pravidla a v\u00fdsledky anal\u00fdzy poruch.<\/p>\n

Porovnejte p\u0159esn\u00e9 jmenovit\u00e9 stejnosm\u011brn\u00e9 nap\u011bt\u00ed<\/h2>\n

DC arcs do not have the natural current zero crossings of AC. Product-specific pole arrangements may therefore be used to manage interruption at higher DC voltages. Schneider Electric’s DC breaker guides show that voltage limits can depend on series-pole connections and system topology. Those examples are for Schneider products, not a universal conversion formula.<\/p>\n

Obtain the maximum operating voltage at the installation point, including charging or other high-voltage states. Compare it with the candidate’s rated DC operational voltage for the exact number of poles and connection drawing. Do not use a headline voltage from a four-pole variant to approve a two-pole variant, or vice versa.<\/p>\n

If a supplier proposes extra poles in series, request the diagram showing terminal order, polarity and links. The higher voltage claim must be explicitly documented for that exact arrangement. A user-created series bridge based on a competitor’s drawing is not evidence that the new breaker will interrupt correctly.<\/p>\n

\"Sch\u00e9ma
Po\u010det p\u00f3l\u016f je nutn\u00e9 p\u0159ev\u00e9st na zdokumentovanou trasu vodi\u010de a s\u00e9riov\u00e9ho p\u00f3lu.<\/figcaption><\/figure>\n

Zkontrolujte p\u0159edpokl\u00e1dan\u00fd poruchov\u00fd proud p\u0159i stejn\u00e9m z\u00e1kladn\u00edm nap\u011bt\u00ed<\/h2>\n

A breaker must interrupt the fault available at its terminals. Provide the location-specific prospective DC fault current, not only the source’s nominal current. Batteries, converters, parallel strings and other feeds may change the duty. Compare the result with the exact candidate’s published DC breaking capacity at the relevant voltage and pole connection.<\/p>\n

The current rating and breaking capacity are different specifications. More poles do not automatically create a higher fault-current rating, and a product’s AC interrupting data cannot stand in for DC data. Ask the supplier to identify the rating table and test conditions that support the proposed connection.<\/p>\n

Ve\u0161ker\u00e9 p\u0159edpoklady t\u00fdkaj\u00edc\u00ed se p\u0159\u00edsp\u011bvku zdroje a uzemn\u011bn\u00ed nechte viditeln\u00e9. Pokud studie poruch nen\u00ed dokon\u010dena, ozna\u010dte srovn\u00e1n\u00ed jisti\u010d\u016f jako p\u0159edb\u011b\u017en\u00e9. Odd\u011blen\u00ed n\u00e1kupu m\u016f\u017ee vyhled\u00e1vat vhodn\u00e9 dokumenty, zat\u00edmco technick\u00e9 odd\u011blen\u00ed dokon\u010duje v\u00fdpo\u010det dostupn\u00e9ho poruchov\u00e9ho proudu.<\/p>\n

Zopakujte si pravidla pro ur\u010den\u00ed sm\u011bru a polarity<\/h2>\n

N\u011bkter\u00e1 ochrann\u00e1 za\u0159\u00edzen\u00ed pro stejnosm\u011brn\u00fd proud maj\u00ed po\u017eadavky na orientaci zdroj\/z\u00e1t\u011b\u017e nebo plus\/m\u00ednus. V syst\u00e9mu s nab\u00edjen\u00edm a vyb\u00edjen\u00edm baterie m\u016f\u017ee norm\u00e1ln\u00ed proud prot\u00e9kat ve v\u00edce ne\u017e jednom sm\u011bru a poruchov\u00fd proud m\u016f\u017ee m\u00edt je\u0161t\u011b jinou cestu. \u010cty\u0159p\u00f3lov\u00e9 t\u011bleso nevylu\u010duje nutnost sezn\u00e1mit se s ozna\u010den\u00edm polarity a instala\u010dn\u00edmi pokyny.<\/p>\n

Pro ka\u017ed\u00fd provozn\u00ed a poruchov\u00fd stav uve\u010fte, kter\u00e1 svorka je pod nap\u011bt\u00edm a jak\u00fdm zp\u016fsobem proud proud\u00ed do za\u0159\u00edzen\u00ed. Porovnejte tyto \u00fadaje s p\u0159esn\u00fdm v\u00fdkresem v\u00fdrobce. Pokud je navrhovan\u00fd jisti\u010d pops\u00e1n jako nepolarizovan\u00fd, ov\u011b\u0159te platnost tohoto tvrzen\u00ed p\u0159i po\u017eadovan\u00e9m nap\u011bt\u00ed a p\u0159eru\u0161ovac\u00edm v\u00fdkonu; nevykl\u00e1dejte to jako neomezenou schopnost proudit v obou sm\u011brech.<\/p>\n

Pokud v\u00fdkres vyvol\u00e1v\u00e1 pochybnosti, po\u017e\u00e1dejte dodavatele o p\u00edsemn\u00e9 vysv\u011btlen\u00ed s odkazem na k\u00f3d objedn\u00e1vky. Ne\u0159e\u0161te nejednozna\u010dn\u00e1 ozna\u010den\u00ed pokusn\u00fdm zapojen\u00edm. Nespr\u00e1vn\u00e1 orientace nemus\u00ed b\u00fdt p\u0159i b\u011b\u017en\u00e9m provozu z\u0159ejm\u00e1, ale m\u016f\u017ee m\u00edt v\u00fdznam p\u0159i odstra\u0148ov\u00e1n\u00ed poruchy.<\/p>\n

Zohledn\u011bte po\u017eadavky na izolaci a \u00fadr\u017ebu<\/h2>\n

Uve\u010fte, kter\u00e9 vodi\u010de je t\u0159eba odpojit pro zam\u00fd\u0161lenou \u00fadr\u017ebu nebo izolaci. Jisti\u010d a odpojova\u010d mohou m\u00edt odli\u0161n\u00e9 schv\u00e1len\u00e9 funkce. Ov\u011b\u0159te, zda je konkr\u00e9tn\u00ed za\u0159\u00edzen\u00ed dimenzov\u00e1no pro zam\u00fd\u0161lenou izola\u010dn\u00ed funkci a co z\u016fstane pod nap\u011bt\u00edm po otev\u0159en\u00ed v navrhovan\u00e9m uspo\u0159\u00e1d\u00e1n\u00ed p\u00f3l\u016f.<\/p>\n

V\u00fdrobci rozvad\u011b\u010d\u016f by m\u011bli ozna\u010dit ob\u011b strany za\u0159\u00edzen\u00ed a v prov\u00e1d\u011bc\u00edch v\u00fdkresech jasn\u011b vyzna\u010dit propojen\u00ed. \u010cty\u0159p\u00f3lov\u00e9 za\u0159\u00edzen\u00ed, u kter\u00e9ho jsou dva p\u00f3ly v s\u00e9rii pro ka\u017edou polaritu, p\u0159edstavuje z hlediska \u00fadr\u017eby jinou situaci ne\u017e \u010dty\u0159i nez\u00e1visl\u00e9 vodi\u010de. Sk\u0159\u00ed\u0148 a postup uzam\u010den\u00ed mus\u00ed odr\u00e1\u017eet skute\u010dnou topologii.<\/p>\n

Spravedliv\u00e9 srovn\u00e1n\u00ed dvou\u010dlenn\u00fdch a \u010dty\u0159\u010dlenn\u00fdch kandid\u00e1t\u016f<\/h2>\n
Rozhodnut\u00ed<\/th>Dvoup\u00f3lov\u00e1 recenze<\/th>\u010cty\u0159hv\u011bzdi\u010dkov\u00e1 recenze<\/th><\/tr><\/thead>
P\u0159ipojen\u00ed<\/td>Kter\u00fd vodi\u010d\/kter\u00e1 trasa vyu\u017e\u00edv\u00e1 kter\u00fd p\u00f3l?<\/td>Jsou sloupy zapojeny do s\u00e9rie, nebo jsou um\u00edst\u011bny na samostatn\u00fdch tras\u00e1ch?<\/td><\/tr>
Stejnosm\u011brn\u00e9 nap\u011bt\u00ed<\/td>Hodnocen\u00ed p\u0159i p\u0159esn\u00e9m uspo\u0159\u00e1d\u00e1n\u00ed zapojen\u00ed<\/td>Hodnocen\u00ed p\u0159i p\u0159esn\u00e9m uspo\u0159\u00e1d\u00e1n\u00ed zapojen\u00ed<\/td><\/tr>
Slu\u017eba p\u0159i poruch\u00e1ch<\/td>\u00dadaje o p\u0159eru\u0161en\u00ed stejnosm\u011brn\u00e9ho proudu p\u0159i dan\u00e9m nap\u011bt\u00ed<\/td>\u00dadaje o p\u0159eru\u0161en\u00ed stejnosm\u011brn\u00e9ho proudu p\u0159i dan\u00e9m nap\u011bt\u00ed<\/td><\/tr>
Sm\u011br<\/td>Pokyny k p\u0159ipojen\u00ed a polarit\u011b<\/td>Pokyny k p\u0159ipojen\u00ed a polarit\u011b<\/td><\/tr>
Izolace<\/td>Kter\u00e9 vodi\u010de se otev\u0159ou?<\/td>Kter\u00e9 vodi\u010de se otev\u0159ou?<\/td><\/tr><\/tbody><\/table><\/figure>\n

Tabulku nevypl\u0148ujte obecn\u00fdmi p\u0159edpoklady typu \u201c2P\u201d a \u201c4P\u201d. Zadejte k\u00f3dy objedn\u00e1vek a revize dokument\u016f. Pokud kandid\u00e1ti podporuj\u00ed r\u016fzn\u00e9 topologie p\u0159ipojen\u00ed, jasn\u011b to vysv\u011btlete, m\u00edsto abyste jednu z nich prezentovali jako p\u0159\u00edmou aktualizaci.<\/p>\n

\"Matice
Porovn\u00e1vejte \u00fadaje o nap\u011bt\u00ed a p\u0159eru\u0161en\u00edch u konkr\u00e9tn\u00edch model\u016f, nikoli pouze po\u010det p\u00f3l\u016f.<\/figcaption><\/figure>\n

Dopady na prostor, tepeln\u00e9 podm\u00ednky a kabel\u00e1\u017e<\/h2>\n

\u010cty\u0159p\u00f3lov\u00e9 proveden\u00ed obvykle vy\u017eaduje v\u011bt\u0161\u00ed fyzickou \u0161\u00ed\u0159ku a m\u016f\u017ee vy\u017eadovat v\u00edce spoj\u016f nebo slo\u017eit\u011bj\u0161\u00ed veden\u00ed vodi\u010d\u016f, av\u0161ak konkr\u00e9tn\u00ed rozm\u011bry jsou uvedeny ve v\u00fdkresu v\u00fdrobku. V\u011bt\u0161\u00ed po\u010det prvk\u016f proudov\u00e9 cesty m\u016f\u017ee rovn\u011b\u017e ovlivnit odvod tepla; v\u00fdrobce m\u016f\u017ee stanovit konkr\u00e9tn\u00ed po\u017eadavky na sn\u00ed\u017een\u00ed jmenovit\u00e9ho v\u00fdkonu nebo na instalaci. Zkontrolujte teplotu sk\u0159\u00edn\u011b, sousedn\u00ed za\u0159\u00edzen\u00ed, prostor pro p\u0159ipojen\u00ed sb\u011brnice nebo kabel\u016f a sm\u011br mont\u00e1\u017ee.<\/p>\n

Kompaktn\u00ed dvoup\u00f3lov\u00e9 za\u0159\u00edzen\u00ed by nem\u011blo b\u00fdt zvoleno pouze z d\u016fvodu \u00faspory m\u00edsta na kolejnici, pokud jeho dokumentovan\u00e9 stejnosm\u011brn\u00e9 nap\u011bt\u00ed nebo provozn\u00ed zat\u00ed\u017een\u00ed nejsou dostate\u010dn\u00e9. Stejn\u011b tak by nem\u011bla b\u00fdt zvolena v\u011bt\u0161\u00ed \u010dty\u0159p\u00f3lov\u00e1 jednotka bez ov\u011b\u0159en\u00ed jej\u00edho zapojen\u00ed a tepeln\u00e9ho zat\u00ed\u017een\u00ed. Nejvhodn\u011bj\u0161\u00ed je schv\u00e1len\u00e1 elektrick\u00e1 zapojen\u00ed, kter\u00e9 lze spr\u00e1vn\u011b nainstalovat a udr\u017eovat.<\/p>\n

Zaznamenejte ka\u017ed\u00fd zdroj tvrzen\u00ed o hodnocen\u00ed<\/h2>\n

D\u016fv\u011bryhodn\u00e9 srovn\u00e1n\u00ed by m\u011blo uv\u00e1d\u011bt p\u0159esn\u00fd technick\u00fd list, jeho revizi, str\u00e1nku obsahuj\u00edc\u00ed tabulku jmenovit\u00fdch hodnot pro stejnosm\u011brn\u00fd proud a instala\u010dn\u00ed v\u00fdkres, kter\u00fd zn\u00e1zor\u0148uje odpov\u00eddaj\u00edc\u00ed zapojen\u00ed svorek. Tyto dokumenty uchov\u00e1vejte pohromad\u011b. Tabulka jmenovit\u00fdch hodnot bez sch\u00e9matu zapojen\u00ed nebo sch\u00e9ma zapojen\u00ed bez \u00fadaj\u016f o jmenovit\u00e9m vyp\u00ednac\u00edm v\u00fdkonu p\u0159edstavuje v\u00fdznamnou mezeru. Odb\u011bratel\u00e9 by m\u011bli po\u017e\u00e1dat dodavatele, aby up\u0159esnili, na kter\u00fd navrhovan\u00fd objednac\u00ed k\u00f3d se jednotliv\u00e9 str\u00e1nky vztahuj\u00ed.<\/p>\n

Pokud m\u00e1 uveden\u00e9 za\u0159\u00edzen\u00ed n\u011bkolik uveden\u00fdch nap\u011bt\u00ed, zjist\u011bte, zda odpov\u00eddaj\u00ed r\u016fzn\u00e9mu po\u010dtu p\u00f3l\u016f, s\u00e9riov\u00fdm zapojen\u00edm, syst\u00e9m\u016fm uzemn\u011bn\u00ed nebo zku\u0161ebn\u00edm podm\u00ednk\u00e1m. Neslu\u010dujte nejv\u00fdhodn\u011bj\u0161\u00ed hodnoty do souhrnn\u00e9 specifikace. Porovn\u00e1n\u00ed by m\u011blo rovn\u011b\u017e uv\u00e1d\u011bt ve\u0161ker\u00e9 p\u0159\u00edslu\u0161enstv\u00ed nebo tov\u00e1rn\u00ed propojky pot\u0159ebn\u00e9 k realizaci testovan\u00e9ho uspo\u0159\u00e1d\u00e1n\u00ed. N\u00edzk\u00e1 jednotkov\u00e1 cena m\u016f\u017ee b\u00fdt zav\u00e1d\u011bj\u00edc\u00ed, pokud jsou vy\u017eadov\u00e1ny speci\u00e1ln\u00ed propojky, v\u011bt\u0161\u00ed sk\u0159\u00ed\u0148 nebo dodate\u010dn\u00e9 zapojen\u00ed.<\/p>\n

P\u0159i kontrole n\u00e1vrhu nechte n\u011bkoho jin\u00e9ho ne\u017e kresli\u010de vyzna\u010dit aktu\u00e1ln\u00ed trasu na obou v\u00fdkresech. Tato nez\u00e1visl\u00e1 kontrola m\u016f\u017ee odhalit chyb\u011bj\u00edc\u00ed propojku nebo vodi\u010d p\u0159ipojen\u00fd k nespr\u00e1vn\u00e9 svorce je\u0161t\u011b p\u0159ed sestaven\u00edm za\u0159\u00edzen\u00ed. V\u00fdsledek by m\u011bl b\u00fdt zaznamen\u00e1n jako kontrola topologie, odd\u011blen\u011b od v\u00fdpo\u010dt\u016f nap\u011bt\u00ed a poruchov\u00e9ho proudu.<\/p>\n

Co je t\u0159eba uv\u00e9st v \u017e\u00e1dosti o nab\u00eddku pro srovn\u00e1n\u00ed<\/h2>\n

Zas\u00edlejte syst\u00e9mu \u00fadaje o jednop\u00f3lov\u00e9m zapojen\u00ed, nap\u011b\u0165ov\u00e9 ob\u00e1lce, uspo\u0159\u00e1d\u00e1n\u00ed uzemn\u011bn\u00ed, v\u00fdsledc\u00edch poruchov\u00e9ho proudu, p\u0159edpokl\u00e1dan\u00fdch sm\u011brech proudu, vodi\u010d\u00edch, kter\u00e9 maj\u00ed b\u00fdt odpojeny, a omezen\u00edch prostoru v rozvad\u011b\u010di. Po\u017e\u00e1dejte dodavatele o p\u0159esn\u00e9 dvoup\u00f3lov\u00e9 a \u010dty\u0159p\u00f3lov\u00e9 objednac\u00ed k\u00f3dy, tabulky jmenovit\u00fdch hodnot pro stejnosm\u011brn\u00fd proud, sch\u00e9mata zapojen\u00ed, pokyny k polarit\u011b, \u00fadaje o vyp\u00ednac\u00ed schopnosti a po\u017eadavky na instalaci.<\/p>\n

Tento Kategorie jisti\u010d\u016f DC MCB<\/a> poskytuje obchodn\u00ed kontext. Tento \u0159ada dvoup\u00f3lov\u00fdch jisti\u010d\u016f pro stejnosm\u011brn\u00fd proud<\/a> a \u0159ada jisti\u010d\u016f DC MCB pro vy\u0161\u0161\u00ed proudy<\/a> jsou pouze v\u00fdchoz\u00edmi body, nikoli d\u016fkazem toho, \u017ee existuje konkr\u00e9tn\u00ed \u010dty\u0159p\u00f3lov\u00e1 alternativa nebo \u017ee n\u011bkter\u00e1 z nich je pro danou aplikaci vhodn\u00e1.<\/p>\n

Pou\u017eit\u00ed Kontakt na spole\u010dnost RITOKS<\/a> po\u017e\u00e1dat o dokumentaci k dan\u00e9mu modelu. Pokud navrhovan\u00fd po\u010det sloup\u016f ovlivn\u00ed v\u00fdkres panelu, p\u0159ed objedn\u00e1n\u00edm vra\u0165te v\u00fdb\u011br zp\u011bt technick\u00e9mu odd\u011blen\u00ed. Kone\u010dn\u00fd sch\u00e9ma zapojen\u00ed si uschovejte spolu se seznamem materi\u00e1l\u016f pro kontrolu a p\u0159\u00edpadn\u00e9 budouc\u00ed v\u00fdm\u011bny.<\/p>\n

\u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n

Je \u010dty\u0159p\u00f3lov\u00fd stejnosm\u011brn\u00fd jisti\u010d v\u017edy lep\u0161\u00ed?<\/h3>\n

Ne. M\u016f\u017ee sice podporovat jin\u00fd, v\u00fdrobcem schv\u00e1len\u00fd \u00fa\u010del p\u0159ipojen\u00ed \u010di odpojen\u00ed, ale vhodnost z\u00e1vis\u00ed na p\u0159esn\u00e9m nap\u011bt\u00ed, poruchov\u00e9 z\u00e1t\u011b\u017ei, zapojen\u00ed a konstrukci syst\u00e9mu.<\/p>\n

Znamen\u00e1 \u201edvoup\u00f3lov\u00fd\u201c, \u017ee jsou chr\u00e1n\u011bny ob\u011b polarity?<\/h3>\n

Ne nutn\u011b. V dokumentovan\u00e9 konfiguraci mohou b\u00fdt p\u00f3ly na jedn\u00e9 v\u011btvi zapojeny do s\u00e9rie. Prostudujte si p\u0159\u00edslu\u0161n\u00e9 sch\u00e9ma a zjist\u011bte, kter\u00e9 vodi\u010de se skute\u010dn\u011b p\u0159eru\u0161\u00ed.<\/p>\n

Lze sloupy v ter\u00e9nu propojit, aby se dos\u00e1hlo vy\u0161\u0161\u00edho jmenovit\u00e9ho v\u00fdkonu?<\/h3>\n

Pouze v p\u0159\u00edpad\u011b, \u017ee p\u0159esn\u00e1 dokumentace v\u00fdrobce toto p\u0159ipojen\u00ed povoluje, uv\u00e1d\u00ed po\u017eadovan\u00e9 propojovac\u00ed prvky a specifikuje v\u00fdsledn\u00e9 jmenovit\u00e9 hodnoty. Nikdy to neodvozujte z jin\u00e9ho v\u00fdrobku.<\/p>\n

Z\u00e1v\u011brem<\/h2>\n

Choose a DC breaker pole arrangement by mapping the system conductors and fault paths to the manufacturer’s exact connection diagram. Then verify voltage, DC breaking capacity, polarity and isolation requirements for that arrangement. Pole count is a starting question, not a rating.<\/p>\n

Literatura<\/h2>\n