Karin Yadda Da Zabu da Kula 35kV Combined Instrument Transformers a Ayyuka

A cikin ingantattun kayan aiki, zabi da kofar instrument transformers na 35kV ba shi ne abu mai tsabta wajen “sake zabi da sake kofa” — yana bukata don in tafiya manyan abubuwa, kamar hanyoyi, nuna fanni, da kuma kula da rarrabe. Idan muka yi haka daga cikin hukuma, za a iya tabbatar da zai yi aiki a gaskiya da kalmomin lokaci da damar lokaci.

1. Transformers na Oil-Immersed vs. Dry-Type — Wani Yadda Zan Iya Zaba Don Inganta?

Idan muka nufin irin transformers, mafi yawan da ake fi sani su ne oil-immersed da dry-type. Kowane tana da muhimmanci da keke, kuma zabin ta ya fi kyau a cikin hanyoyin inganta.

• Transformers na Oil-Immersed:
  Waɗannan suna da kowace da karamin cutar, da wasu modeli suna da 150 kg. Muhimman ta ce nuna fanni mai kyau, wanda yana ba su da karfi a kofar jirgin sama da kasa 10kV. Amma a cikin hanyoyin inganta, game da ciyawa da yanayi, transformers na oil-immersed suna da ƙarin chances suka shafi ƙananan cutar. Saboda haka, a lokacin zabi, yana bukata don in ka duba masana'antar cutar mai kyau da kuma amfani da transformer oil mai kyau kan ƙarfin harshen, kamar DB-25, don in bude ƙaramin cutar ko kusan cutar a ranar dan musamman.

• Transformers na Dry-Type:
  Waɗannan suna da kowace da karamin cutar, da kuma suna da tsari mai kyau, saboda suka ƙara ƙwace na hoton fire ko explosion. Amma nuna fanninta su na ƙarin mallaka, kuma ana amfani da su a cikin jirgin sama da kasa 6kV. Amma a cikin hanyoyin inganta, transformers na dry-type suna da ƙarin kyau. Suna amfani da matukar resin da silicone rubber composite insulation structures wadanda suka da ƙarfin ƙarin loki, cracks, da mechanical stress, wanda yana ba su da karfi a cikin hanyoyin inganta da kowace da ƙarin loki, strong harmonics, da kuma overvoltage.

Saboda haka, idan muka yi aiki a cikin ƙasar masu hanyoyin inganta — musamman da 2000 mita — ina tambayi in muka zaba transformers na dry-type, musamman don kofar jirgin sama. Su suna da ƙarfin daɗi, ƙarfin daɗi, da kuma ƙarfin daɗi.

2. Ina Kofar da Tsari na Heat Dissipation — Ba Zama Littafi!

Ina kofar da transformer ta yana da muhimmanci. Yana bukata don in yake da ƙarfin daɗi da kuma tafiya heat dissipation.

A cikin hanyoyin inganta, ƙarfin air ta ƙarin, saboda haka natural cooling effect through air convection ta ƙarin. Wannan yana ba da ƙaramin transformers na oil-immersed. Saboda haka, a lokacin kofa, muna buƙata don in muka yi ƙoƙari don in tafiya heat dissipation efficiency, kamar:

• Increasing the heat dissipation area

• Optimizing the airflow channel design

• Using materials with better thermal conductivity

Musamman, don transformers na oil-immersed, yana bukata don in ka tabbatar da cutar flow yana daɗi, da kuma cutar cutar yana cikin ƙarfin daɗi. Idan ba haka, ƙaramin heat dissipation zai iya ba da ƙaramin nuna fanni da kuma ƙara ƙarfin cutar.

3. Protection Measures for Special Environments

Dagata da ƙarfin air ƙarin, hanyoyin inganta suna da wasu hanyoyi masu ƙarfin: strong UV radiation, ƙarin loki, sandstorms, da kuma ƙarfin humidity. Waɗannan suna iya ƙara ƙarfin cutar da kuma ƙarfin aiki na transformers.

Saboda haka, a lokacin zabi da kofa, yana bukata don in muka duba:

• The protection rating should be at least IP55, to prevent dust and water ingress.

• Special sealing glue should be used at box joints, and protective covers should be added if necessary.

• Use weather-resistant and anti-aging materials, such as wide-temperature-range epoxy resin and silicone rubber.

• In areas with high pollution levels, such as near industrial zones or deserts, the creepage distance should be increased by 10%–15% per 1000m of altitude. For example, for a 10kV device at 2000m altitude, the creepage distance should be at least 150mm to prevent pollution flashover accidents.

4. Acceptance and Maintenance After Installation Can’t Be Skipped

Ba a bangare kofar, ba kai zama don in ka kawo power — full acceptance check ita ce yadda aka bukata. Wannan tana ƙunshi:

• Visual inspection: Check for any damage, deformation, or poor sealing.

• Electrical tests: Measure insulation resistance, ratio, error, and polarity.

• Functional testing: Ensure the secondary signal output is normal and protection actions are accurate.

Musamman, don transformers da ake kofar a cikin hanyoyin inganta, yana bukata don in muka duba ƙarfin sealing performance da grounding effectiveness, saboda waɗannan ne muhimmiyar zuwa ƙarfin aiki a cikin hanyoyin ƙarin.

Ba a kawo acceptance, muna buƙata don in muka yi plan mai ƙarfin don in tafiya ƙarfin aiki na transformer, kamar:

• For oil-immersed transformers, check the oil level

• For dry-type transformers, check for discharge marks on the surface

• For all transformers, check the temperature, sealing condition, and grounding status

Ba haka na iya ƙara ƙarfin cutar da kuma ƙarfin aiki na transformers.

In Summary

Zabi da kofar combined instrument transformers ba shi ne abu mai tsabta — musamman a cikin hanyoyin inganta. Muna buƙata don in muka zaba bayan oil-immersed da dry-type transformers, muna duba ƙarfin heat dissipation, protection, grounding, da kuma sealing a lokacin kofa, da kuma muna yi acceptance da maintenance mai ƙarfin ba a kawo power.

Don in ka ƙara ƙarfin cutar da kuma ƙarfin aiki, muna buƙata don in muka zaba model da ƙarfin, kofar da ƙarfin, da kuma tafiya ƙarfin mai ƙarfin.

Ina ni James, wani "mai electrician mai tsakiya" da take yi aiki a tushen transformers tafin shekaru 12. Ina tabbatar da wannan sharhin yakin zai taimakawa. Tarihin da ɗaya!