Using speed adjustable motor and speed adjustor, and speed range.
采用调速电机和调速器，调速范围大。
For pumping storage stations with wide rangeability of head and discharge, a speed-adjustable motor-generators can be used for improving operation condition.
在水头、负荷变化范围较大的蓄能电站中，为改善机组运行工况，可以采用速度可调的发电电动机。
Configuration of adjustable overtemperature protection, motor overload protection.
配置可调式超温保护，马达过载保护。
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