Farkon Kwallaye Daidaita na AC Contactors | Tushen Yawancin Kwallaye Daidaita da Baka da Misoperation Koyarren Da Ma Fara Cikakken Ta
Akwai kungiyar da suka yi amfani da AC contactors don kawo da kontrola cikin tushen karamin kashi. Suna amfani da main contacts don kawo da kudan tushen, kuma suna amfani da auxiliary contacts don gudanar da takalma. Main contacts na musamman ba suka da shi ce kawai normally open contacts, amma auxiliary contacts badala haka suna da biyu-biyu na contacts da suke da normally open da normally closed functions. Ana amfani da AC contactors masu yawan kusa daidai don inganta intermediaries relays don samun yanayi da main circuits, don haka an iya samun yanayi masu tsawon kasa ko kawo kashi mai kusa da kasha ne.
Contacts da ke AC contactor suna da silver-tungsten alloy, wanda yana da fadada tsarin kashi mai kyau da kuma fadada matsayin ablation a faduwar jiki.
AC contactors suna zama biyu: permanent magnet AC contactors da electromagnetic AC contactors.
Zaman lafiya da electromagnetic AC contactor ya samu ta shiga yana nuna AC electromagnet. Electromagnet yana faruwa ne daga laminating biyu na "mountain"-shaped thin silicon steel sheets; daya yana da fix, da coil da ya faru a kan, kuma akwai ziyarta da za su iya zama operating voltage. Don ci gaba masu magana, ana hada short-circuit ring a kan attracting surface of the iron core. Idan AC contactor ya haɗa zaman lafiya, ya koma da spring. Bincike daya yana da movable iron core, wanda yake da tsari da fixed iron core, kuma ana amfani da ita don gudanar da kudan da kuma gudanar da main contacts da auxiliary contacts.
Permanent magnet contactors suna da sabbin nau'in low-power contactor wanda ana amfani da permanent magnet drive mechanism don gudanar da traditional electromagnetic drive mechanism.
Principle da take da shi yana nuna cewa like magnetic poles repel and opposite magnetic poles attract. Saboda polarity da ke permanent magnet da ake faru a linkage mechanism na contactor yana da fix, soft iron da ake faru a base na contactor, tare da electronic module da ake solidify da ita, yana gina positive da negative pulse current da ya kai ten to twenty milliseconds under the action of an external control signal. Wannan yana sa soft iron zuwa different polarities, don haka ya iya samun main contacts na contactor don kawo, hold, da release.
Farkon da ke da permanent magnet contactors suna da:
Yadda da operational reliability mai kyau, ba ake da shi interference daga grid voltage.
Action speed mai kuka, kamar 0.12s to 0.15s (kafin 0.35s to 0.38s na traditional ones).
Operation mai kalmomi, ba ake da shi AC noise, kuma ba ake da shi dust ko oil stains.
Ba ake da shi temperature rise a module, aging resistance mai kyau, kuma service life na uku da traditional contactors.
Maintenance-free da super energy-saving protection.
Contactors da suka da current rating da 20A ko da yake suna da arc-extinguishing covers, wanda suna amfani da electromagnetic force da ake faru a lokacin da circuit yana kudan don kawo arc da yawa, don haka suke maimaita contacts.
AC contactors suna faruwa ne as integrated unit, kuma tsarin da performance suna ci gaba, amma function suna da shi baki daya. Duk da yadda technology yake ci gaba, AC contactors suna da muhimmanci a matsayin wurin.
Contactors suna zama biyu: AC contactors (voltage: AC) da DC contactors (voltage: DC), kuma ana amfani da su a power, power distribution, da electricity consumption scenarios. A nanin, contactor yana nufin electrical device a industrial electricity wanda ana amfani da magnetic field da ake faru a lokacin da current yana rawa a coil don kawo contacts, don haka suke kontrola load.
Idan kana son faru AC contactor, yana da kyau a bayyana abubuwan da ya danganta a lokacin da installation da use; kawai haka za a iya canzawa aiki a nan da ba. Muhimman abubuwan suna da normal operating conditions da installation conditions na AC contactor.
Normal Operating Conditions and Installation Conditions of AC Contactors
Ambient air temperature: -5℃ ~ +40℃. The average value within 24 hours shall not exceed +35℃.
Altitude: Not exceeding 2000m.
Atmospheric conditions: When the maximum temperature is +40℃, the relative humidity of the air shall not exceed 50%; at lower temperatures, higher relative humidity is allowed (e.g., 90% at 20℃). Special measures shall be taken for condensation occasionally caused by temperature changes.
Pollution degree: Level 3.
Installation category: Category Ⅲ.
Installation conditions: The inclination between the installation surface and the vertical plane shall not exceed ±5°.
Shock and vibration: The product shall be installed and used in a place without significant shaking, impact, or vibration.
AC Contactor Model and Specification Table
Akwai kungiyoyi da suka da models da AC contactors. A cikin applications na yau da kullum, models da AC contactors suka da parameter values da dama, kuma working conditions da za su iya da shiga da scope da za su iya da shiga suka da dama. Saboda haka, kawai idan kana san da da shirin da ka fi sani da main models da technical parameters na contactors, za a iya zaka da select, install, da maintain them reasonably and correctly according to the requirements of electrical equipment in practical applications. Saboda haka, editor ya faruwa AC contactor model and specification table; ka duba!
Main Specifications of AC Contactors
Classified by current rating: 115A, 150A, 185A, 225A, 265A, 330A, 400A, 500A, 630A, 800A.
Classified by the rated control power supply voltage (Us) of the contactor coil:
AC: 50Hz or 60Hz, including AC110V (115V), AC220V (230V), AC380V (400V);DC: DC110V, DC220V.
