This standard is part of the IEC 61869 series, which replaced the older IEC 60044 series. EN 61869-2 specifically covers inductive (electromagnetic) CTs. Electronic or low-power CTs are covered by other parts (e.g., EN 61869-6 for LPITs).
The EN 61869-2 standard outlines the requirements for current transformers used in electrical measurement and control devices. Its primary purpose is to ensure the accuracy, reliability, and safety of current transformers in various applications, including power generation, transmission, distribution, and electrical measurement. en 61869-2
EN 61869-2 Title: Instrument transformers – Part 2: Additional requirements for current transformers Based on: IEC 61869-2 (Edition 1.0, 2012-10) Supersedes: EN 60044-1 (former standard for inductive current transformers) This standard is part of the IEC 61869
| Feature | IEC 60044-1 (old) | EN 61869-2 (new) | |---------|-------------------|------------------| | Composite error | Defined but measured differently | Harmonized with general standard | | Transient classes | TPS, TPX, TPY, TPZ | Same classes, but test methods aligned with 61869-1 | | Marking | P1/P2, S1/S2 | Same but clearer burden/ALF marking format | | FS concept | Yes | Retained | | Accuracy test points | Several points | Simplified in some ranges | | Environmental tests | Separate standard | Integrated via 61869-1 | The EN 61869-2 standard outlines the requirements for
is the essential European standard for conventional inductive current transformers used in energy measurement and power system protection. It updates the accuracy, thermal, dielectric, and transient performance requirements from the older 60044 series and aligns with the global IEC 61869 framework. For engineers designing or specifying CTs in Europe, this document is mandatory reading alongside EN 61869-1.