Daushe Da Yadda Tashin Karamin Kula na Transfomarai na Karamin Kula na Gariya Ce?

Na'amni Felix, Muhimmi na 15 Shekara a Tashar CT, Ina Bincike Da Abubuwan Da Ake Iya Nuna

Salaamun cikin gida, na'amni Felix, da na yi aiki da muhimmanci a tashar current transformers (CTs) kusan shekara 15. Gaskiya, zan iya magana game da yadda insulation na biyu na CTs na gargajiya yana ci, da kuma abubuwan da za ku iya yi don in ba ta ci.

Sabbin Dalilai:
1. Ingantaccen Ruwa — Kwalba Ta Hanyar Rukuni Yana Da Mu Amfani!

CTs na gargajiya suna da damar ruwa da hawa kafin lokacin. Idan rukuni ba shi da kyau, ruwa zaka iya koma zuwa da kuma lafiya tsarin insulation da kake.

A cikin yanayin maso dabba ko mafi sauya, wannan matsalolin yana da damar da shi — ruwa mai maso dabba da sauyar ruwa zaka iya haɓaka mold, kwallon ruwa, ko kuma short circuit.

Misali: Daga baya na samu wata ruwa a cikin CT a lokacin ilimi. An samu cewa rukuni na ringiyar ya rage da kuma ya ba ruwa mai hawa a koma zuwa.

2. Haɗaƙar Dust — Dust Zai Iya Tsara Zaman Lafiya!

Dust, kusa maso dabba, da wasu abubuwan da suka dace suka iya haɗa a cikin surface ko terminals na biyu na CT. Idan a cikin sauya, suka iya haɗaƙar conductive paths wanda ke tsara insulation resistance.

Haɗaƙar dust da kuma cleaning daidai ita ce muhimmanci — hasashe a cikin wurare da aka dace. Ba a duba har zuwa lokacin da akwai matsala kaɗansu.

3. Yanayin Material — Duk Mata Yana Da Damar Ya Rage

Babu material da ya fi shi damar ya rage, musamman idan a cikin al'adu.

Exposure zuwa UV, sautinsu mai kyau, da kuma chemical corrosion suka iya haɗaƙar aging. Lokacin da lokaci, materials kamar silicone rubber ko epoxy resin zaka iya rage, harden, ko kuma lassa da cikakken insulation properties su.

Yadda a nuna aging:

• Nuna cracks, discoloration, ko brittleness.

• Dubu idan insulation values suna rage tun daga shekaru zuwa shekaru.

• Track historical test data for sudden changes.

4. Installation Da Ba Da Kyau — Matsalolin Sun Farko Tun Bayan Setup

Idan installation an yi da rush ko da ba da kyau, matsalolin zaka iya faru.

Misalai su ne:

• Grounding da ba da kyau;

• Wiring da ba da kyau;

• Installation a wurare da aka iya koma ruwa;

• Forgetting or improperly installing waterproof seals.

Waɗannan matsalolin ba su zama har zuwa lokacin, amma lokacin da lokaci suke iya haɗaƙar contact failure, ingantaccen ruwa, ko kuma partial discharge — duk wadannan su ne abin da ba da kyau game da insulation.

Misali na gaskiya: Daga baya na samu insulation readings da ba da kyau saboda waterproof seal da ba da kyau. Technician an yi da ta loosely wrapped bayan da ya ba da kyau — wanda ya ba ruwa mai hawa a koma zuwa da kuma ya haɓaka insulation breakdown.

5. Lack of Maintenance — Ignoring Care Is Like Slow Self-Damage

Many sites install CTs and forget them until something breaks. But like a car, CTs need regular maintenance.

This includes:

• Cleaning terminals;

• Checking seals;

• Measuring insulation;

• Replacing worn parts.

Ignoring these basic steps means small issues become big ones — and fixing them later costs more.

How to Detect and Prevent These Issues?

Here are some practical tips:

• Measure insulation resistance regularly：Use a 2500V megohmmeter to check secondary-to-ground and primary-to-secondary insulation. Most manufacturers recommend values above 1000 MΩ.

• Check the appearance：Look for cracks, rust, deformation, or signs of moisture. Any of these could signal deeper issues.

• Improve environmental protection：In high-humidity or salty environments, consider adding space heaters or using CTs with higher IP ratings.

• Schedule regular maintenance and cleaning：At least once a year, inspect and clean your CTs — replace old seals, tighten connections, and update worn components.

As someone with 15 years of experience in the CT industry, here's my takeaway:

“Insulation problems in outdoor CTs don’t happen suddenly — they build up over time.”

With proper installation, regular checks, and good maintenance habits, most issues can be caught early and avoided altogether.

If you're dealing with insulation drops, unusual data, or unsure how to proceed, feel free to reach out. I’m happy to share more real-world experiences and solutions.

May every CT run safely and reliably, protecting the power grid with precision!

— Felix