铁路应用直流信号单稳态继电器第2部分:弹簧式继电器

[中文适用范围]： 本文件给出了用于铁路信号装置中安全相关应用的直流继电器的要求。本文件适用于复位力由弹簧弹性产生的非验证型弹簧型信号单稳态继电器。复位力可单独由独立弹簧和/或接触弹簧本身提供。注：“非验证型”意味着继电器在无需其他继电器辅助或无需电路操作控制的情况下，满足所有安全条件的特性。 [外文原描述]： IEC 62912-2:2019 gives requirements for direct current relays intended for safety-related applications in railway signalling installations. This document is applicable to non-proved signalling monostable relays of the spring type, whose return force is generated by elasticity of spring. The return force can be provided either from a separate spring and/or from the contact springs themselves.