Technical Guides
Clear, field-oriented explanations of transformer, MV switchgear, testing and fault topics.
How often should a transformer be maintained?
A condition-based guide to transformer maintenance intervals, inspections and test planning.
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Transformer fault warning signs
How to recognize abnormal sound, temperature, oil leaks and protection trips without jumping to an unsafe diagnosis.
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Transformer oil analysis: DGA and breakdown testing
What dissolved gas, moisture, acidity and dielectric breakdown tests reveal about transformer oil.
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MV switchgear maintenance and testing guide
The mechanical, electrical and protection checks that belong in a medium-voltage switchgear program.
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Dry-type transformer maintenance
Dust, ventilation, thermal condition and insulation checks for dry-type transformers.
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Transformer tests: what does each measurement show?
The roles of TTR, winding resistance, insulation, tan delta and oil tests in transformer assessment.
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What to do during a transformer emergency
Safety-first steps, information to preserve and the path to a controlled return to service.
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Used transformer buying checklist
Check nameplate, history, physical condition and electrical test results before purchasing a used transformer.
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