At present the matching problems between the generator over frequency protection and turbine over speed protection exist commonly in coal-fired power units.
目前，火电机组普遍存在发电机过频保护与汽轮机超速保护之间的配合问题。
With fixed frequency control circuit, it provides with over voltage, over current, overheat and short circuit protection.
该系列电源适配器，采用固定频率控制电路，具备限流、限压、过温、短路全功能保护。
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