Specifies maximum acceptable partial discharge levels to prevent long-term insulation breakdown. Mechanical Requirements
┌────────────────────────────────────────────────────────┐ │ IEC 61869-1 │ │ (General Requirements Base) │ └───────────────────────────┬────────────────────────────┘ │ ┌──────────────────┴──────────────────┐ ▼ ▼ ┌───────────────┐ ┌───────────────┐ │ IEC 61869-2 │ │ IEC 61869-3 │ │ (Current Txs) │ │ (Voltage Txs) │ └───────────────┘ └───────────────┘ The document establishes strict benchmarks for:
The standard's scope has broadened significantly. The 2023 version applies to newly manufactured instrument transformers for applications where the , with an analogue or digital secondary signal for measuring, protection, and control purposes, at rated frequencies from 15 Hz to 400 Hz, or for DC applications. This new scope is one of the most significant technical changes. For low-voltage systems (≤1 kV AC or ≤1.5 kV DC), requirements are covered by IEC 61869-201.
If you require access to IEC 61869-1 without purchasing a full commercial license, consider these compliant pathways:
: Specific requirements for current transformers (CTs). iec 61869-1 pdf free download
: General requirements for all instrument transformers.
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Organizations like ANSI (USA), BSI (UK), DIN (Germany), or equivalent local bodies sell authorized adoptions of IEC standards. This new scope is one of the most
Unfortunately, the official IEC website does not provide a free PDF download of IEC 61869-1. However, there are a few alternatives to access the standard:
IEC 61869-1 is a standard published by the International Electrotechnical Commission (IEC) that defines the requirements for instrument transformers, specifically current transformers and voltage transformers. The standard is part of the IEC 61869 series, which replaces the older IEC 60044 series.
: Introduces new wideband accuracy classes (e.g., WB2) to handle harmonics up to
IEC 61869-1 is a part of the IEC 61869 series of standards, which covers instrument transformers used in power systems. The standard provides requirements for the design, testing, and performance of current transformers and voltage transformers used in power systems. The standard covers topics such as: : General requirements for all instrument transformers
IEC 61869-1 is the base document. The specific requirements are divided into several parts:
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Historically, instrument transformers were governed by the IEC 60044 series. However, as digital technology evolved and power systems grew more complex, the IEC technical committee (IEC/TC 38) restructured these rules into the IEC 61869 series.