Grounding transformer
The neutral point ungrounded operation mode is generally adopted in 6kV, 10kV and 35kV Power Grids in China's power system. With the growing and development of the power industry, in order to prevent the occurrence of the above accidents, provide sufficient zero sequence current and voltage for the system, and make the grounding protection operate reliably, it is necessary to manually establish a neutral point so that the grounding resistance can be connected to the neutral point. Grounding transformer (hereinafter referred to as grounding transformer) is produced under such circumstances. The grounding transformer is an artificial neutral grounding resistance, which is generally very small (generally less than 5 Ω).
