Norma Iec 61869-2 Direct

In the complex ecosystem of electrical power systems, accuracy and reliability are not merely desirable; they are absolute necessities. Instrument transformers are the silent sentinels of this domain, stepping down high primary currents to manageable levels for measurement, metering, and protective relays. At the heart of global standardization for these devices lies the IEC 61869 series. Within this series, IEC 61869-2: Additional Requirements for Current Transformers serves as a cornerstone document, specifically defining the standards for inductive current transformers (CTs) used in alternating current (AC) systems. Context and Scope IEC 61869-2 is a specific part of the overarching IEC 61869 series, which replaced the older IEC 60044 family. The standard applies to newly manufactured inductive current transformers intended for use with electrical measuring instruments and protective devices operating at frequencies from 15 Hz to 100 Hz. It is crucial to note that this standard explicitly covers inductive CTs—the conventional iron-core type—while other parts of the series address low-power, electronic, or other specialized transformers.