The standard maintains rigorous safety protocols. As CTs theoretically produce dangerously high voltages if the secondary circuit is left open (infinite impedance), IEC 61869-2 specifies strict requirements for open-circuit voltage limits and insulation levels, ensuring operator safety and equipment longevity.
Requirements for protective current transformers for transient performance. iec 61869-2 current transformers
A crucial aspect of the standard is its classification of CTs based on application: The standard maintains rigorous safety protocols
The standard meticulously categorizes CTs based on their intended function, primarily distinguishing between and protective CTs . A crucial aspect of the standard is its
The standard defines accuracy classes (e.g., 0.1, 0.2, 0.5 for measuring; 5P, 10P for protection). A critical distinction is the definition of rated burden. With modern digital relays and meters consuming significantly less power than older analog devices, IEC 61869-2 places greater emphasis on lower burden requirements, ensuring that CTs are not oversized for modern applications.