Mai suna aiki na busbar a switchgear, kuma yadda ake zaba busbar daidai?

Rolin da busbars a switchgear:

Busbars suna conductors a cikin switchgear wanda suke gano da kuma tattara energy na gwaji. Su doke sursen power (kamar terminali na output daga transformer) zuwa hanyoyi masu branches (kamar terminali na incoming daga circuit breakers), ta yi matsayin transfer station don energy na gwaji. Wannan yana iya tattara energy na gwaji zuwa abubuwa masu electrical ko circuits kamar yadda aka bukata.

Huruwar da zaka ce za a bayar da busbars masu daidai:

Current-carrying capacity

Zaka iya bayar da busbars kamar rated current na switchgear don haske cewa busbars ba za su ci gida ne saboda overheat a lokacin da su ke operate a rated current. Yanzu, ka nemi tabular na current-carrying capacity da kuma ka yi corrections duk fadada environmental temperature da kuma yanayin installation. Misali, a cikin ingantaccen environment, current-carrying capacity na busbar zai ci rarrabe, kuma zaka iya bayar da busbar mai yawan size mafi yawa.

Material

Abubuwan da ake amfani da su a kan busbars sun hada da copper da kuma aluminum. Busbars na copper suna da electrical conductivity mafi yawa, mechanical strength mafi yawa, da kuma resistance to corrosion, amma suke da cost mafi yawa. Busbars na aluminum suna da cost kadan, amma electrical conductivity da mechanical strength suke da kadan. Don hanyoyi na high reliability requirements da kuma space mai tsarki, busbars na copper suke da damar zaka bayar. A wasu hanyoyi na cost-sensitive inda akwai space, zaka iya bayar da busbars na aluminum.

Shape and size

Busbars suna da shapes kamar rectangular da circular. Busbars na rectangular suna da heat dissipation mafi yawa, skin effect kadan, da kuma sauƙe a install da kuma connect. Busbars na circular suna da mechanical strength mafi yawa. Zaka iya bayar da shapes da sizes masu daidai kamar yadda current magnitude da kuma space na installation. A hanyoyi na high-current, zaka iya amfani da multiple busbars na rectangular a parallel.

Akwai busbars mai bare da kuma busbars mai insulated. Busbars mai bare suna da cost kadan amma ana bukatar safety distance mafi yawa. Busbars mai insulated suna da safety mafi yawa kuma zai iya rage risk na inter-phase short-circuits. Su ne da damar zaka amfani da su a cikin switchgear na compact space da kuma high safety requirements.