STS366T digital ground transformer protection device is a complete set of current and voltage protection function products, suitable for 66KV and below voltage levels of ground transformer or used as station ground transformer. It provides quick break protection, single-stage overcurrent protection, high-voltage side single zero-sequence current protection, low-voltage side single zero-sequence current protection, single zero-sequence voltage protection, non-electrical quantity protection of transformer, and completes measurement and control functions. It can be installed locally in the switch cabinet or assembled on the control panel.
