release-free relay

The automatic test system which can measure action time and release time of the relay is designed.

设计了测量继电器动作时间与释放时间的自动测试系统。

The board can be inserted into the computer's bus slot. The system can test the state of the relay's contact according to the fixed sample frequency and calculate the relay' time parameter ( act time, bounce time and release time).

系统按照固定的采样频率检测继电器动作与释放时各个触点的状态，计算得出继电器的时间参数（动作时间、动作回跳时间、释放时间，释放回跳时间、动作同步时间差和释放同步时间差）。

The element contains a release-delay and a pickup-delay time relay.

组件包含一个释放延迟和一个信号延迟定时继电器。

Protection against motor over-load usually adopt thermal relay, but protection against line over-load usually adopt long delay over-current release of circuit-breaker.

电动机过载保护通常采用继电器，而配电线路过载保护多采用断路器的长延时过电流脱扣器来完成。