It is recognized that the gas density relay can reflex the gas density in gas insulated electric equipment correctly and the pressure relay cant do the same.

一般认为气体密度继电器可以正确反映气体绝缘电气设备的气体密度，而压力继电器则不能。

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After a preliminary examination to know. Gray electric hydraulic pump for the ABS relay, the red relay for the ABS solenoid valve. Is one of the most common power supply ABS system.

经过初步检查得知。灰色的为abs液压电动泵继电器，红色的为abs电磁阀继电器。是一种最常见的ABS系统的供电方式。

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In the system of relay protection of electric power, abnormal state information given by relay protection devices has two types: accident information message and warning information message.

在电力继电保护系统中，继电保护设备给出的异常状态信息报文通常可分为两类：事故信息报文和预告信息报文。

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