IEC standards are copyrighted and sold by IEC and national standards bodies (e.g., ANSI, BSI, DIN). Obtain the official PDF from:
(If you want, I can list which specific part applies to a current or voltage transformer if you tell me the transformer type and whether it’s inductive, capacitive, or electronic.)
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You're looking for information on the IEC 61869-1 standard!
IEC 61869-1 is a part of the International Electrotechnical Commission (IEC) series of standards for instrument transformers. Specifically, this standard deals with the requirements for current transformers and voltage transformers used for measurement and protection purposes in power systems.
Here's a brief overview:
Title: Instrument transformers - Part 1: General requirements
Summary: This part of the standard covers the general requirements for instrument transformers, including their design, construction, testing, and performance. It applies to current transformers (CTs) and voltage transformers (VTs) used for measurement and protection in power systems.
Key aspects:
Benefits:
If you're looking for the actual PDF of the standard, I recommend checking the official IEC website or searching for it on a reputable standards library website.
The IEC 61869-1 PDF refers to the foundational international standard for instrument transformers, establishing the general requirements for newly manufactured devices. The latest version, IEC 61869-1:2023, was released in June 2023 and serves as a technical revision that replaces the original 2007 edition. Overview of IEC 61869-1:2023
This standard acts as a "Product Family Standard," meaning it provides the general framework that must be read in conjunction with specific product standards for various transformer types. It is applicable to instrument transformers used in high-voltage applications where nominal voltages exceed 1 kV AC or 1.5 kV DC.
Scope: Covers transformers providing analogue or digital secondary signals for measurement, protection, and control.
Frequency Range: Applicable for systems operating from 15 Hz to 400 Hz, as well as DC applications.
Consolidation: The 2023 edition officially merges requirements from IEC 61869-6:2016 (low-power instrument transformers) into Part 1. Key Technical Sections
The document outlines critical parameters and testing procedures to ensure safety and interoperability within power utility systems: iec 618691 pdf
Accuracy and Error Limits: Defines permissible limits for both analogue and digital secondary signals, including specific requirements for harmonics and anti-aliasing filters (Clause 5.7).
Testing Framework: Categorizes tests into Type Tests, Routine Tests, Special Tests, and a new category for Commissioning Tests.
Environmental Conditions: Specifies requirements for normal and special service conditions, such as temperature, altitude, vibration, and pollution levels.
Wideband Accuracy Classes: Introduces optional wideband accuracy classes (WB0 to WB4) to address the impact of higher harmonics on modern power grids. Comparison with Related Standards
The IEC 61869 series was developed to replace the older IEC 60044 set of stand-alone standards. IEC 61869-1:2023
I notice you're asking for a "draft piece" on IEC 61869 (not 618691 — that appears to be a typo). IEC 61869 is the international standard for instrument transformers (current and voltage transformers) used in electrical power systems.
Below is a draft informational piece suitable for a technical note, report introduction, or internal briefing.
IEC 61869-1 is the modern replacement for IEC 60044-1 (CTs) and IEC 60044-2 (VTs). IEC standards are copyrighted and sold by IEC
It is important to note that IEC standards are copyrighted documents. The official standard is available for purchase through the IEC Webstore or authorized national standards bodies (such as ANSI in the US, BSI in the UK, or DKE in Germany).
Caution: Downloading "free" PDF versions of IEC standards from unverified third-party websites poses several risks:
For professionals working with these standards, obtaining an official license is necessary for compliance and safety auditing purposes.
The digital parts of IEC 61869 (Part 9 and 10) directly interface with IEC 61850 (Part 9-2) . A modern digital substation uses:
Because of this integration, engineers often search for "iec 618691 pdf" when trying to bridge the two worlds.
A significant portion of the standard details how to verify compliance. It categorizes tests into three types:
Routine Tests: Performed on every unit manufactured.
Special Tests: Tests agreed upon between manufacturer and purchaser (e.g., specific mechanical tests or chopped lightning impulse tests). (If you want, I can list which specific
The standard mandates specific design criteria to ensure safety during operation: