1. Zama na Gargajiya na Maimakon Transformer
Yana da kyau a yi nufin maimakon mai gari-gari na transformer kafin a yi amfani da shi, kuma ya kamata a yi maimakon mai gari-gari har shekaru 5 zuwa 10 bayan. Idan yake fitowa a lokacin da ake amfani da shi ko idan an samu matsalolin da ba a tabbatar a cikin testun da ake yi a baya, ya kamata a yi maimakon mai gari-gari.
Transformers masu amfani da shi tsohon lokaci da kadan zai iya a yi maimakon har shekara 10.
Idan a yi amfani da transformers masu tap changer a lokacin da ake amfani da shi, ya kamata a ci gaba irin yanayin da ake bayarwa a kan mekanismi na tap changer.
Transformers da ake fadada a wurare da suka mutuwar da sauran abubuwan da suka mutu, ya kamata a yi nasarun zama na maimakonta kamar yadda ake samu tushen amfani, bayanan testi, da kuma takardun fanni.
2. Tushen da Abubuwan da za a Yi a Maimakon Mai Gari-Gari na Transformer
Tashin da za a yi kafin maimakon: Duba da samun cututtuka daga takarda ta amfani, tabbatar da su a kan maye, da kuma faɗa masana'antu don gyaran. Idan cututtukan da ke da muhimmanci domin haka, ya kamata a yi masana'antu masu hanyar da damar tushen da damar jami'a. Faɗa jerin kayan aiki, abincin, da kuma alamomin da za a buƙata, da kuma duba kan maye a kan maimakon don tabbatar da duka abubuwan da ke da muhimmanci da kuma yanayin da ke da muhimmanci.
Sauki na taili, kawo karamin transformer, koyi mai gari-gari, da kuma nufin windings da mai gari-gari.
Maimakon mai gari-gari, windings, tap changer, da kuma lead wires.
Maimakon karamin transformer, conservator tank, explosion-proof pipe, radiators, oil valves, breather, da kuma bushings.
Maimakon cooling system da oil reclamation unit.
Hafi tank shell, da kuma rufo idan yana da kyau.
Maimakon kontrol, measuring instruments, signaling, da kuma protective devices.
Filter ko kawo insulating oil.
Dry the insulation idan yana da kyau.
Rabta transformer.
Yi measurements da tests kamar yadda ake dogara a kan test procedures.
Bayan a dole da duk tests, karkashin transformer a amfani.
3. Tsarin da Abubuwan da za a Yi a Maimakon Mai Gari-Gari na Transformer
Don in hada inganta cututtuka masu mai gari-gari saboda gasar da suka girma, ya kamata a rage maimakon mai gari-gari a ranar yaki ko rana gaske. Yawancin lokacin da ake da muhimmanci a kan maimakon mai gari-gari a kan air shine:
A kan air mai gaske (relative humidity ≤65%): 16 hours
A kan air mai gaske (relative humidity ≤75%): 12 hours
Kafin maimakon mai gari-gari, kara temperature na canza da kuma temperature na transformer oil. Maimakon mai gari-gari zai iya faru bayan mai gari-gari yana da temperature da yake 10°C fiye da temperature na canza.
Idan a yi amfani da transformers masu tsakanin shekaru 20, ya kamata a yi nuna cututtuka masu mai gari-gari a kan winding insulation aging. A gaba daya, wannan ana yi ne tare da finger:
Insulation mai kyau yana da kyau, yana da karfin da yake da kyau, yana kusa da finger pressure kuma yana da kyau bayan a kawo, da kuma surface mai kyau.
Insulation mai yawa yana da kyau, yana da karfin da yake da kyau, finger pressure yana kasa small cracks kuma yana da color mai yawa. A cikin haka, ya kamata a kawo ko kuma a gyara insulation.
Insulation mai yawa daidai yana kasa da finger pressure kuma yana kawo carbonized particles, ya kamata a kawo insulation daidai.
Insulating spacers a kan winding transformers ya kamata a zama da kyau; windings ba zai da lallace, deformation, ko displacement. High- da low-voltage windings ya kamata a zama symmetrical da kuma da kyau, ba zai da oil-adhered contaminants.
Tap changer contacts ya kamata a zama da kyau; insulating pressboard da insulating tubing ya kamata a zama intact da kuma da kyau.
Tabbatar da contact positions, tightening screws, rotating shafts, da kuma markings a kan voltage selector switch suka zama da kyau da labels a kan cover.
Core ba zai da lallace; oil ducts (cooling channels) a kan core da windings ya kamata a zama unobstructed.
Kara insulation resistance of core-through bolts ta 1000 V megohmmeter. Minimum acceptable values shine:
≥2 MΩ for 3 kV, 6 kV, and 10 kV transformers
≥5 MΩ for 35 kV transformers
Insulation resistance of the secondary circuit of the Buchholz relay ya kamata a zama da kyau, wiring ya kamata a zama da kyau, da kuma internal float da mercury contacts ya kamata a zama intact.
Yadda mai shirya da kwalba yana cikin kwalba masu zuba zai ci gaba a fili na musamman.
