IEC 61869-1 is the foundational product family standard that defines the general requirements for all newly manufactured instrument transformers. This standard serves as a common framework, meant to be read in conjunction with specific product standards for various transformer types. iTeh Standards Core Scope and Applications
IEC 61869-1 acts as the "constitution" for this new series, ensuring that whether you are using a legacy oil-paper CT or a modern optical sensor, the core definitions and safety criteria remain consistent. iec 618691 pdf hot
: Updated requirements now cover everything from altitude effects on temperature rise to mechanical resistance against vibration and internal arc faults. Summary Table: Old vs. New Standard Framework Legacy (IEC 60044 Series) Modern (IEC 61869 Series) Stand-alone standards for each type Modular: General (Part 1) + Specific parts Output Type Primarily analogue Seamless Analogue & Digital integration Limited consideration Optional wideband classes (up to 500 kHz) Consolidation Separate documents for Low Power (LPIT) LPIT general rules merged into Part 1 Practical Implications for Industry For utilities and manufacturers, compliance with IEC 61869-1:2023 IEC 61869-1 is the foundational product family standard
Low Voltage (LV): Applications at or below 1 kV AC / 1.5 kV DC are covered under a separate standard, IEC 61869-201. : Updated requirements now cover everything from altitude
, which formerly handled additional general requirements for low-power instrument transformers (LPIT). Revised Scope
The 2023 version significantly modernizes the previous 2007 standard by integrating digital technologies and broader frequency requirements: IEC Webstore Merger with Low-Power Standards : It now incorporates IEC 61869-6:2016
Manufacturers and utility operators are under pressure to ensure reliability. The standard defines rigorous Type Tests and Routine Tests, including: Temperature rise tests. Impulse voltage tests on primary terminals. Wet tests for outdoor types. 3. Global Compliance