2000
The first domestic 220kW/380V four-quadrant(hoist) inverter was successfully operated in Baoan coal mine of Shandong Huaning Group.
The first 560kW/6kV high-voltage inverter of FGI was successfully operated on the oil transfer pump of Panjin Oil Plant in Liaohe Oilfield, which is one of the first high-voltage inverters in China.
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