Iec - 61869-1 Pdf Portable
Specific requirements for combined transformers.
Definitions for rated primary/secondary currents, voltages, accuracy classes, and rated burden.
Classification of environmental pollution that affects insulation requirements. 3. Key Technical Requirements
Only the official PDF obtained directly from IEC, your national standards body, or an authorized reseller should be used for:
| | 2007 Edition | 2023 Edition | | :--- | :--- | :--- | | Low Power Instrument Transformers (LPITs) | Not integrated. | General requirements harmonized with IEC 61869-6. | | Emission and immunity tests | Limited reference. | Updated electromagnetic compatibility (EMC) requirements aligned with modern grid environments. | | Transient performance | Basic coverage. | Enhanced transient performance requirements for protective applications. | | Insulation coordination | Based on IEC 60071-1 (older version). | Updated references to IEC 60071-1:2019. | | Mechanical tests | Static load only. | Additional dynamic and seismic qualification guidelines. | | Digital interfaces | Not present. | References to merging units and digital communication (IEC 61850 series). | Iec 61869-1 Pdf
Terminology has been updated and transferred to the IEC TC 38 Glossary to improve consistency across other parts of the series.
| | Details | | :--- | :--- | | Standard Number | IEC 61869-1 | | Full Title | Instrument transformers – Part 1: General requirements | | Edition | 2.0 | | Publication Date | 2023-07 (Current active version) | | Previous Edition | 2007 (Edition 1.0) | | Language | English, French | | ICS Code | 17.220.20 (Measurement of electrical and magnetic quantities) | | TC/SC | TC 38 (Instrument transformers) | | Copyright Holder | International Electrotechnical Commission (IEC), Geneva, Switzerland |
Provides a comprehensive glossary of terms used throughout the standard. The TC 38 glossary has been moved to a dedicated document, IEC 61869‑99, for easier maintenance.
Access to the official PDF is crucial for several industry roles: Specific requirements for combined transformers
Standards for power-frequency voltage withstand and lightning impulse voltage tests. Accuracy Classes:
Access to the latest revisions, protecting your designs from obsolescence.
Ensuring high accuracy for billing and system monitoring.
: Applies to instrument transformers with analogue or digital outputs used for measurement, protection, and control. | | Emission and immunity tests | Limited reference
Standard ratings apply up to 1,000 meters above sea level. Corrections apply for higher altitudes due to thinning air.
Providing reliable signals to protective relays during power system faults.
: New optional classes (like WB1 and WB2 ) have been introduced to address the measurement of harmonics and distorted currents up to 20 kHz, which is critical for monitoring power quality in modern grids. Why This Standard Matters
| Standard | Title | Purpose | |---|---|---| | | General requirements | Foundational requirements for all ITs | | IEC 61869-2 | Additional requirements for current transformers | Specific to conventional CTs | | IEC 61869-3 | Additional requirements for inductive voltage transformers | Specific to inductive VTs | | IEC 61869-4 | Additional requirements for combined transformers | For combined CT/VT units | | IEC 61869-5 | Additional requirements for capacitor voltage transformers | Specific to CVTs | | IEC 61869-6 | (Merged into IEC 61869-1:2023) | Low-power instrument transformers | | IEC 61869-9 | Digital interface for instrument transformers | Based on IEC 61850 | | IEC 61869-10 | Additional requirements for low-power passive current transformers | Passive LPCT specifications | | IEC 61869-201 | General requirements for LV systems | For systems ≤1 kV AC |
If you are a student, researcher, or professional who needs reference access, the most responsible and legitimate approach is to purchase the PDF from an authorized distributor or to access it through a standards subscription service offered by your institution or employer.
: Covers both traditional analogue outputs and modern digital interfaces. Core Technical Requirements