HVTESTTECH BLOG

Instrument transformers
John Roberts

What Happens If CT Secondary Is Open?

Learn the dangers and implications of an open current transformer (CT) secondary in electric power systems. Discover practical guidelines, preventative steps, and real-life anecdotes to

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Transformer
John Roberts

What Should Be the IR Value of a Transformer?

As a professional electrical testing expert, one of the most critical assessments we make during transformer maintenance is the insulation resistance (IR) test. Insulation resistance

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Instrument transformers
John Roberts

How Do You Check CT Polarity?

Discover reliable methods to verify current transformer (CT) polarity in electric power systems. Learn practical testing approaches, safety guidelines, anecdotes, and best practices for ensuring

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Transformer
John Roberts

Does Neutral Wire Go Back to Transformer?

Understand whether the neutral wire should return to the transformer in electrical systems. Explore the roles of the neutral wire, its connection practices, safety implications,

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