Kaddamar da Turanci Donhon Transformer Daidai Duk da Zama?

I. Tushen Masu Tap na Transformer

Yadda adadin tap da transformer yake da, haka ne kuma yadda adadin masu tushen tap.

A Tsaina, transformers na on-load tap-changing suna da 17 tap, wasu transformers na off-load tap-changing suna da 5 tap, amma wasu suna da 3 ko 2.

Liman kimiyya, adadin tap na transformer yana iya cewa yadda adadin masu tushen tap. Idan karamin kafa ya faru a lokacin tushen, za a iya gargaɗi masu tushen tap na transformer na on-load tap-changing, amma ba zan iya gargaɗi masu tushen tap na transformer na off-load tap-changing a lokacin da ake magance - zan iya gargaɗi shi bayan ake rage rike.

Adadin tap na transformer yana nufin tap na winding coils - waɗannan tap su ne tap na winding, wadanda suna da adadin daban-daban, umma 4 ko 6, amma wasu suna da ƙarin. Idan 4 tap, akwai 3 masu tushen; idan 6 tap, akwai 5 masu tushen. Ƙarfin tap na biyu na iya haɗa da adadin daban-daban na winding turns, wanda ke haɗa da adadin kafa na biyu a cikin masu tushen tap. Saboda haka, masu tushen tap na transformer ana amfani da su don gargaɗi kafa.

II. Yadda A Dace Masu Tushen Tap Daga Nameplate

Nameplate yana nuna yanayin kafa na tap. Don dacen masu tushen tap da transformer yake da, muka ƙara kafin kasa da ratio na turns kuma muka bincika ta da kafin kasa ta primary-side grid don tabbatar da masu tushen tap da ya faru.

III. Binciken Masu Tushen Tap na Transformer Bayan Rage Rike

• "High to high adjustment": Idan kafin kasa da kasa ya faru, za a iya gargaɗi link na connection zuwa masu tushen tap na ƙarin.

• "Low to low adjustment": Idan kafin kasa da kasa ya ci, za a iya gargaɗi link na connection zuwa masu tushen tap na ci.

Don samun yadda volts da take faru a lokacin gargaɗi na ƙarin, duba nameplate na transformer.

Tap changer na off-load ba da ƙarin masu tushen, tare da 3, wanda ke gargaɗi neutral point na winding na ƙarin. "High" yana nufin kafin kasa da kasa ya faru; "to high" yana nufin gargaɗi tap changer zuwa masu tushen tap na ƙarin. Setting na ƙarin kafa yana nufin ƙarin turns na winding na primary.

Duk da haka, a "low to low," "low" yana nufin kafin kasa da kasa ya ci (yana bukata zama ƙarin), "to low" yana nufin gargaɗi tap changer zuwa masu tushen tap na ci. Kafa na primary na ci yana nufin ci turns na winding na primary.

Makaranta: Idan winding na secondary ba sa (adadin turns yana ciki), a lokacin "high to high adjustment," adadin turns na winding na primary yana ƙarin. Saboda supply voltage ba sa, amma adadin turns na primary yana ƙarin, ratio na transformation yana ƙarin, wanda ke haɗa da kafin kasa na kasa na output na kasa na kasa na kasa.

A lokacin "low to low adjustment," adadin turns na winding na primary yana ci, wanda ke haɗa da ratio na transformation. Saboda supply voltage ba sa, kafin kasa na secondary yana ƙarin.

IV. Yadda A Gargaɗi Tap Changer na Transformer?

3 masu tushen tap na transformer:

• Masu tushen I: 10,500 V

• Masu tushen II: 10,000 V

• Masu tushen III: 9,500 V

• Setting switch zuwa Masu tushen I yana nufin: idan kafin kasa na ƙarin yana 10,500 V, kafin kasa na kasa na output yana 400 V.

• Setting switch zuwa Masu tushen II yana nufin: idan kafin kasa na ƙarin yana 10,000 V, kafin kasa na kasa na output yana 400 V.

• Setting switch zuwa Masu tushen III yana nufin: idan kafin kasa na ƙarin yana 9,500 V, kafin kasa na kasa na output yana 400 V.

Haka ne, Masu tushen I yana bayar da kafin kasa na output na ci, kuma Masu tushen III yana bayar da kafin kasa na output na ƙarin.

Gargaɗi tap changer ta hanyar kafin kasa na bus na secondary. Idan kafin kasa na secondary ya ci kuma yana bukata zama ƙarin, za a ƙarin masu tushen tap zuwa ƙarin (misali, idan orijinala a Masu tushen II, gargaɗi zuwa Masu tushen III). Amma, idan kafin kasa ya faru, za a yi ƙarin daɗi.

Don transformers na off-load tap changers, zan iya gargaɗi kafin kasa bayan rage rike. Bayan gargaɗi, amfani da multimeter don ƙara resistance na DC don tabbatar da contact na ƙarfi a masu tushen tap na ƙarin bayan rage rike.

Transformers na ƙarin ba zan iya gargaɗi masu tushen tap bayan rage rike, ba ta hanyar load. Don waɗannan transformers, zan iya zaba masu tushen tap mai kyau saboda haka zan iya ƙara kafin kasa a cikin limits na ƙarin da ci a lokacin da maximum da minimum load.

Transformers na on-load tap-changing suna da ƙarin types: type na biyu na da regulating winding da on-load tap changer; type na biyu na amfani da external boosting regulator. Transformers na on-load tap-changing da regulating windings suna da tap selector wanda ke amfani don gargaɗi masu tushen tap bayan load.

Masu tushen tap na power transformer (ko kuma "tap changers") suna da ƙarin types: "on-load" ko "off-load." On-load tap changers zan iya gargaɗi bayan rage rike da load, kuma suna da motor-driven - gargaɗi zan iya yi bayan rage rike buttons. Ƙarin small power transformers suna amfani da off-load tap changers, wanda ke bukatar rage rike. Cover na tap changer a tank na transformer zan iya buɗe, kuma handle zan iya gargaɗi zuwa masu tushen tap da aka zaba. Sannan, za a ƙara resistance na DC na three-phase windings don tabbatar da values na ƙarfi (generally no more than 2% difference) bayan rage rike cover da re-energizing.