Kontaktory s mexanicheskoy blokirovkalash
Kontakt s mexanicheskoy blokirovkoy — bu pereklyuchatel s elektricheskim upravleniem, ispolzuemyy uchun pereklyucheniya tsepi elektropitaniya, analogik rele, uchun isklyuchenie bolee vysokix nominal tokov va nekotoryh drugyh otlichiy.
Kontaktor upravlyaetsya tsepyu, kotoraya imeet gorazdo bolee nizo uroven moschnosti, chem kommuntiruemaya tsepy.
Kontaktory s mexanicheskoy blokirovkoy byvayut turli shakllar s razlichnoy moschnostyu va xarakteristikami. V otlichie ot avtomaticheskogo vyklyuchatelya, kontaktor ne prednaznachen uchun preryvaniya toka korotkogo zamykaniya.
Kontaktory variruyutsya ot tex, kotorye imeyut tok otklyucheniya ot neskolkyx amper do tysyach amper va ot 24 V postoyannogo toka do mnogix kilovolt.
Fizicheskiy razmer kontaktorov ustroystva, dostatochno malenkogo, chtoby ego bylo podnyat odnoy rukoy, do bolshix ustroystv shu storonoy okolometra bor. Boshqaruv elektrodvigatelyami, osveshcheniem, otopleniem, batareyami kondensatorov, teplovimi isparitelyami va dori-darmon elektr energiyasi nagruzkami uchun kontaktory foydalaniladi. .
Kontaktor s mexanicheskoy blokirovka otsenivaetsya po raschetnomu toku nagruzki na kontakt (polyus), maksimalnomu vyderjivaemou toku pri otkaze, rabochemu tsiklu, ojidaemu raschetnomu sroku slujby, napryajeniyu va napryajeniyu katushki.
Kontaktör boshqaruv dvigateli obshchego naznacheniya mumkin podoyti uchun tyajelogo puska bo'lish dvigateli; tak nazyvaemye kontaktory «opredelengo naznacheniya» tschatelno adapterovaniy uchun takix primeneniy, kak zapusk dvigateli kompressor konditsioner.
Kategorii ispolzovaniya MEK
Tekushchiy nominal kontaktora zavisit ot kategorii ispolzovaniya. 60947 standartidagi IEC toifasi namunalari:
- AC-1– Neinduktiv yoki slaboinduktivnye nagruzki, pechi soprotivleniya
- AC-2– Pusk dvigateli s kontaktnymi koltsam: pusk, otklyuchenie
- AS-3– Zapusk dvigateli s korotkozamknutym rotorom va otklyuchenie tolko posle togo, kak dvigatel naberet oboroty. (Vklyuchite tok s zablokirovannym rotorom (LRA), otklyuchite tok polnoy nagruzki (FLA))
- AC-4– Pusk dvigateli korotkozamknutym rotorom v tolchkovom va tupikovom rejimlari. Bystryy start/stop. (Sdelay va slomay LRA)
Rele va vspomogatelnye kontaktnye bloki raschitany v sootvetstvie bo'yicha IEC 60947-5-1.
- AC-15– Elektromagnitni boshqarishni boshqarish (>72 VA)
- DC-13 – Elektromagnitami boshqarish
Shrift | Nominal oqim | Boshqariladigan quvvat (kVt) | ||||
AC-3(A) | ||||||
220V | 380V | 415V | 440V | 660V | ||
TOC2XN-MI-09 | 9 | 2.2 | 4 | 4 | 4 | 5.5 |
TOC2XN-MI-12 | 12 | 5.5 | 5.5 | 5.5 | 5.5 | 7.5 |
TOC2XN-MI-18 | 18 | 7.5 | 7.5 | 9 | 9 | 10 |
TOC2XN-MI-25 | 25 | 5.5 | 11 | 11 | 11 | 15 |
TOC2XN-MI-32 | 32 | 7.5 | 15 | 15 | 15 | 18.5 |
TOC2XN-MI-40 | 40 | 18.5 | 18.5 | 22 | 22 | 30 |
TOC2XN-MI-50 | 50 | 15 | 22 | 25 | 30 | 33 |
TOC2XN-MI-63 | 63 | 18.5 | 30 | 37 | 37 | 37 |
TOC2XN-MI-80 | 80 | 22 | 37 | 45 | 45 | 45 |
TOC2XN-MI-95 | 95 | 22 | 45 | 45 | 45 | 41 |