油流继电器是大型电力变压器冷却循环系统的重要部件。

The oil flowing relay is the important prot of the cooling system of power transformer.

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是一家集科研、开发、生产和销售固态继电器和电力电子模块为一体的高新科技企业。

Is a collection of scientific research, development, production and marketing of solid state relays and power electronic modules as one of the hi-tech enterprises.

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早在19世纪末，过电流继电器就被用于保护电力系统。

As early as the end of 19th century, overcurrent relay has been used to protect electric power system.

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