测量继电器和保护设备.第26部分:电磁兼容性要求

[中文适用范围]： IEC 60255 系列的这一部分适用于测量继电器和保护设备，考虑了形成电力系统保护方案的设备组合，包括与这些系统一起使用的控制、监视、通信和过程接口设备。本标准规定了测量继电器和保护设备的电磁兼容性要求。对于不包含电子电路的设备，例如机电继电器，不需要进行本标准中规定的测试。本标准规定的要求适用于新状态下的测量继电器和保护设备，规定的所有试验仅为型式试验。 [外文原描述]： IEC 60255-26:2013 is applicable to measuring relays and protection equipment, taking into account combinations of devices to form schemes for power system protection including the control, monitoring, communication and process interface equipment used with those systems. This standard specifies the requirements for electromagnetic compatibility for measuring relays and protection equipment. The requirements specified in this standard are applicable to measuring relays and protection equipment in a new condition and all tests specified are type tests only. This new edition includes the following significant technical changes with respect to the previous edition: - definition of test specifications, test procedures and acceptance criteria per phenomena and port under test in one document; - extension of radiated emission measurement for frequencies above 1 GHz; - limitation of radiated emission measurement at 3 m distance for small equipment only; - addition of zone A and zone B test level on surge test; - extension of tests on the auxiliary power supply port by a.c. and d.c. voltage dips, a.c. component in d.c. (ripple) and gradual shut-down/start-up; - harmonization of acceptance criteria for immunity tests.