The reliability of power supply is improved by using over-current and over-voltage protecting circuit.

设计的过流、过压保护电路，有效地提高了电源的可靠性。

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The ARD has perfect performance on short circuit, Over current and over voltage protections.

电梯自动救援装置输出具有超强的短路、过流、低压保护。

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The functions are LED displaying, alarming when 30% over-current, over-voltage and under-voltage occurring, and communicating with the management computer through the series port with some protocols.

通过LED显示器显示电压、电流、电度的实时值，当过压30%、过流30%、欠压30%时进行声光报警，并能通过串行口结合有关通信协议，实时与管理计算机进行通信实现远程户外抄表。

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High-voltage DC can carry power over long distances at lower cost than alternating current, but the transformers still cost too much to make the idea widespread.

FORBES: Magazine Article