{"id":3221,"date":"2026-09-17T13:48:39","date_gmt":"2026-09-17T13:48:39","guid":{"rendered":"https:\/\/voltnexpower.com\/?p=3221"},"modified":"2026-09-18T12:54:08","modified_gmt":"2026-09-18T12:54:08","slug":"grounding-transformer-working-principle-types-applications-testing-and-how-to-choose","status":"publish","type":"post","link":"https:\/\/voltnexpower.com\/pt\/grounding-transformer-working-principle-types-applications-testing-and-how-to-choose\/","title":{"rendered":"Grounding Transformer: Working Principle, Types, Applications, Testing and How to Choose"},"content":{"rendered":"

A grounding transformer<\/strong><\/a>, also called an earthing transformer<\/strong> or neutral grounding transformer<\/strong>, is a special-purpose transformer used to create a neutral point and provide a controlled path for zero-sequence and ground-fault current in a three-phase power system.<\/p>\n

It is especially important in ungrounded or delta-connected systems<\/strong> where a natural neutral point is not available. By establishing an artificial neutral, a grounding transformer can help control ground-fault current, stabilize the system neutral, reduce transient overvoltages and allow protection equipment to detect and clear faults more effectively.<\/p>\n

Grounding transformers are widely used in solar PV plants, wind farms, battery energy storage systems, generators, industrial power systems and utility substations<\/strong>.<\/p>\n

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