IEC 62236-4:20 18 RLV包含国际标准及其红线版本。红线版本只有英文版本。Redline版本为您提供了一种快速简单的方法来比较该标准与其前一版本之间的所有变化。红线版本不是IEC官方标准，只有标准的当前版本才被视为官方文件。 IEC 62236-4:20 18规定了发射和抗扰度的限制，并提供了信号和电信（S&T）设备（包括属于S&T的电源系统）的性能标准，这些设备可能会干扰铁路环境内的其他设备，或增加铁路环境的总发射，因此有可能对铁路系统外的设备造成电磁干扰。与上一版相比，新版本包括以下重大技术变化:澄清了标准的某些部分；豁免和豁免要求的扩展。

IEC 62236-4:2018 RLV contains the International Standard and its Redline version. The Redline version is available in English only. The Redline version provides you with a quick and easy way to compare all the changes between this standard and its previous edition. The Redline version is not an official IEC Standard, only the current version of the standard is to be considered the official document.

IEC 62236-4:2018 specifies limits for emission and immunity and provides performance criteria for signalling and telecommunications (S&T) apparatus (including power supply systems belonging to S&T) which may interfere with other apparatus inside the railway environment, or increase the total emissions for the railway environment and so risk causing electromagnetic interference to apparatus outside the railway system. This new edition includes the following significant technical changes with respect to the previous edition: clarification of certain parts of the standard; extension of emission and immunity requirements.