Wanda ya kamata da electromagnetic release da thermal release a circuit breaker?

Karamin da Mafarin Aiki na Tsakiyar Mataki na Bambanta da Karamin Tsakiyar Mataki na Sai Da Yauwa a Circuit Breakers

A cikin circuit breakers, karamin tsakiyar mataki na bambanta (Magnetic Trip Unit) da karamin tsakiyar mataki na sai da yauwa (Thermomagnetic Trip Unit) suna da hanyar da suke samun da yaɗuwar mai karfi a jama'a, amma suke taimakawa da yaɗuwar da suke samun da overcurrent conditions a hukuma daban-daban. Daga baya ana ambaci abubuwan da ke faruwa bayanai:

1. Hukumar Taimaka

Magnetic Trip Unit

Hukumar Taimaka: Karamin tsakiyar mataki na bambanta ke samun da short circuits ko instantaneous high currents ta hanyar electromagnetic induction. Idan mai karfi ya fi shi a matsayin muhimmanci, wanda ya yi electromagnet ya gina force masu kyau don in taimaka tripping mechanism, zai iya rarrabe cikin waƙo a lokacin da zaɓe.

• Taimakawa da Zafiya: Karamin tsakiyar mataki na bambanta yana da zafiya ga instantaneous high currents kuma zai iya taimaka a lokacin da farkon milliseconds, wanda ya ba shi babban nasara a kan short-circuit protection.

• Matsayin Mai Karfi: Ana amfani da shi domin samun short-circuit currents, wadannan suka fi shi daidai da rated current.

• Nufin Lafiya: Karamin tsakiyar mataki na bambanta ba sa shiga nufin lafiya saboda hukumarsa yana da shi a kan electromagnetic induction, ba lafiya ba.

Thermomagnetic Trip Unit

• Hukumar Taimaka: Karamin tsakiyar mataki na sai da yauwa ke haɗa da thermal da magnetic effects. Ana amfani da bimetallic strip (wanda ake gudanar da biyu na metals da coefficients of thermal expansion daban-daban) don samun prolonged overload currents. Idan mai karfi ya fi shi a matsayin muhimmanci, bimetallic strip zai canza saboda heat, zai faɗa tripping mechanism. Kuma ana iya amfani da magnetic trip component don samun instantaneous high currents.

• Taimakawa da Zafiya: Don overload currents, karamin tsakiyar mataki na sai da yauwa zai taimaka da zafiya, saboda ake iya taimaka da thermal expansion of the bimetallic strip. Wannan zai iya ɗaukan seconds zuwa minutes. Don short-circuit currents, magnetic part of the thermomagnetic trip unit zai iya taimaka da zafiya.

• Matsayin Mai Karfi: Karamin tsakiyar mataki na sai da yauwa ke taimaka da protection against both overload and short-circuit currents, wanda ke haɗa da matsayin da suka fi shi daidai, musamman don prolonged overload conditions.

• Nufin Lafiya: Thermal trip portion of the thermomagnetic unit yana da nufin lafiya ga ambient temperature, saboda hukumarsa yana da shi a kan thermal expansion of the bimetallic strip. Saboda haka, design of thermomagnetic trip units ana iya taimaka da nufin lafiya don in taimaka da accurate operation under different conditions.

2. Abubuwan da Suke Samun da Su

Magnetic Trip Unit

• Abubuwan da Suke Samun da Su: Ana amfani da shi domin samun short-circuit protection a abubuwan da suke bukata taimakawa da zafiya ga instantaneous high currents. Misalai sun hada da industrial equipment, power distribution systems, da motors.

• Fadada: Taimakawa da zafiya, zai iya taimaka da short-circuit currents don in tabbatar da equipment damage.

• Kasuwanci: An fito da shi kawai don short-circuit protection kuma ba zan iya taimaka da prolonged overload currents ba.

Thermomagnetic Trip Unit

• Abubuwan da Suke Samun da Su: Ana amfani da shi domin samun both overload and short-circuit protection, musamman a abubuwan da suke bukata taimakawa da zafiya ga both types of overcurrent. Misalai sun hada da residential circuits, commercial buildings, da small industrial equipment.

• Fadada: Zai iya taimaka da both overload and short-circuit currents, wanda ke haɗa da fadada masu taimakawa da zafiya. Don overload currents, an iya taimaka da delayed response, zai iya taimaka da nuisance trips saboda brief current surges.

• Kasuwanci: Taimakawa da zafiya mafi yawan taimakawa da short-circuit currents musamman da pure magnetic trip unit.

3. Karkashin da Design

Magnetic Trip Unit

• Karkashin da Yawanci: Karamin tsakiyar mataki na bambanta yana da karkashin da yawanci, wanda ake gudanar da electromagnet da tripping mechanism. Ba ta da mechanical components mafi yawa, wanda ke taimaka da reliability.

• Independence: Karamin tsakiyar mataki na bambanta yana taimaka da independent protection unit, specifically for short-circuit protection.

Thermomagnetic Trip Unit

• Karkashin da Mafi Yawa: Karamin tsakiyar mataki na sai da yauwa ke haɗa da bimetallic strip da electromagnet, wanda ke haɗa da karkashin da mafi yawa. An haɗa da thermal trip section da magnetic trip section, wanda ke taimaka da shi taimaka da both overload and short-circuit conditions.

• Integration: Karamin tsakiyar mataki na sai da yauwa yana taimaka da integrated into the circuit breaker as a single protection device, suitable for multiple protection needs.

4. Cost and Maintenance

Magnetic Trip Unit

• Cost da Yawanci: Saboda karkashinsa da yawanci, karamin tsakiyar mataki na bambanta yana da cost da yawanci kuma zai iya buƙata maintenance da yawa.

• Maintenance da Yawanci: Maintenance for the magnetic trip unit yana da yawanci, primarily involving checking the condition of the electromagnet and tripping mechanism.

Thermomagnetic Trip Unit

• Cost da Mafi Yawa: Karkashin da mafi yawa na karamin tsakiyar mataki na sai da yauwa ke taimaka da cost da mafi yawa, musamman don high-quality units.

• Maintenance da Mafi Yawa: Maintenance for the thermomagnetic trip unit yana da mafi yawa, requiring periodic inspection of the bimetallic strip to ensure proper operation under varying temperatures.

Summary

• Magnetic Trip Unit: Best suited for short-circuit protection, offering fast response times, a simple structure, and lower costs. However, it only handles instantaneous high currents.

• Thermomagnetic Trip Unit: Suitable for both overload and short-circuit protection, with a slower response to overload currents but a broader application range. It is more complex and costly but provides comprehensive protection.