Mai suna Overcurrent Relay?

 Maa ni Overcurrent Relay?

Ma'ana

Overcurrent relay ita ce mai gudanar da shi ne kowane lokacin da adadin karamin kungiyar tafi ta zama da ya fi yawa da darajin da aka bayarwa. Ana amfani da shi don sauya abubuwan da suka yi wa harkokin karamin kungiya.

Tsarin da Take Daga Wannan Tsari Na Zama

Daga wani tsari na zama, overcurrent relay yana iya haɗa da cikakken maida:

• Instantaneous Overcurrent Relay

• Inverse Time Overcurrent Relay

• Definite Time Overcurrent Relay

• Inverse Definite Time Overcurrent Relay

• Very Inverse Definite Time Overcurrent Relay

• Extremely Inverse Definite Time Overcurrent Relay

Instantaneous Overcurrent Relay

Instantaneous overcurrent relay ba na da takardun zamantaka masu sako a cikinsa. Idan adadin karamin kungiyar ta zama da ya fi yawa da darajin da aka bayarwa, za su fadada muhimmanci. Kafin adadin karamin kungiyar ta zama da ya fi yawa da darajin da aka bayarwa, za su fadada muhimmanci. Ingantaccen muhimmiyar zaɓuɓɓuka ita ce zuwa rike.

Ingantaccen muhimmiyar zaɓuɓɓuka ita ce zuwa rike. Yana faruwa a lokacin da adadin karamin kungiyar ta zama da ya fi yawa da darajin da aka bayarwa. Wannan relay yana iya faruwa idan inganci daga take da take da karamin kungiya ta zama da ya fi yawa da darajin da aka bayarwa.

Ingantaccen muhimmiyar zaɓuɓɓuka ita ce zuwa rike. Yana amfani da shi don sauya earth faults da kuma sauya circulating currents. Instantaneous overcurrent relay ana iya samun shi a outgoing feeder.

Inverse - Time Overcurrent Relay

Inverse - time overcurrent relay yana faruwa idan adadin karamin kungiyar ta zama da ya fi yawa da darajin da aka bayarwa. Idan adadin karamin kungiyar ta zama da ya fi yawa, lokacin da aka faruwa ta zama da ya fi yawa.

Kurba na wannan relay ta haɗa da cikakken maida. Relay ta bai faruwa ba idan adadin karamin kungiyar ta zama da ya fi yawa da darajin da aka bayarwa. Ana amfani da shi don sauya distribution lines. Inverse - time relay yana haɗa da cikakken maida.

Inverse Definite Minimum Time (IDMT) Relay

Inverse Definite Minimum Time (IDMT) relay ita ce mai gudanar da shi ne kowane lokacin da adadin karamin kungiyar ta zama da ya fi yawa da darajin da aka bayarwa. Lokacin da aka faruwa ta zama da ya fi yawa. IDMT relay tana da core mai electromagnet. Saboda core mai electromagnet yana iya sauya idan adadin karamin kungiyar ta zama da ya fi yawa da darajin da aka bayarwa. IDMT relay tana da amfani a distribution lines. Tana nuna muhimmancin zuwa rike da selectivity.

Very Inverse Relay

Very inverse relay tana da time - current characteristic da yake da IDMT relay. Ana amfani da shi a feeders da long - distance transmission lines. Tana da muhimmanci a wurare da short - circuit current ta zama da ya fi yawa saboda ingancin daga take da take da karamin kungiya. Very inverse relay tana da muhimmanci a wurare da fault currents. Tana da muhimmanci a wurare da long - line sections.

Extremely Inverse Relay

Extremely inverse relay tana da time - current characteristic da yake da IDMT da very inverse relays. Ana amfani da shi don sauya cables da transformers. Idan adadin karamin kungiyar ta zama da ya fi yawa da darajin da aka bayarwa, extremely inverse relay tana faruwa. Tana da muhimmancin zuwa rike. Tana da amfani a wurare da overheating.

Inverse time relays, including the IDMT, very inverse, and extremely inverse relays, tana da amfani a distribution networks da power plants. Tana da muhimmancin zuwa rike a lokacin da fault conditions, tana da muhimmancin sauya power systems.