IEEE P61869-105 ED1, Sep 2018

IEEE P61869-105 ED1, Sep 2018 is a draft recommended practice focused on uncertainty evaluation in the calibration of instrument transformers. It addresses a technical area where measurement accuracy, traceability, and calibration results must be understood in practical power-system applications. For engineers and quality teams working with instrument transformer testing, this document helps frame how uncertainty should be assessed and reported, supporting more consistent calibration decisions and better confidence in performance data.

What is IEEE P61869-105 ED1, Sep 2018?

This technical document sits within the instrument transformer domain and provides guidance for evaluating uncertainty during calibration. IEEE P61869-105 ED1, Sep 2018 is relevant to measurement practices where transformer behavior must be characterized with care, especially when results may affect ratio, phase, and overall metering or protection performance. As a draft recommended practice, it is best understood as a calibration-focused reference that supports more disciplined uncertainty analysis rather than a general product specification.

Where is IEEE P61869-105 ED1, Sep 2018 used?

IEEE P61869-105 ED1, Sep 2018 is commonly used in laboratory and field calibration workflows for instrument transformers in power, energy, and industrial systems. It is relevant where current and voltage transformers are tested for metering, protection, and verification tasks, particularly when uncertainty values must be documented for traceable results. The standard can support test houses, utility maintenance teams, and engineering groups that compare calibration data across equipment, procedures, or measurement setups.

Why is IEEE P61869-105 ED1, Sep 2018 important?

Uncertainty evaluation is essential when calibration results influence acceptance, compliance, or operational decisions. IEEE P61869-105 ED1, Sep 2018 helps define a clearer basis for assessing measurement quality in instrument transformer calibration, reducing ambiguity in reported results. That matters for procurement checks, test consistency, and risk control in systems where small errors can affect metering accuracy or protection performance. Using a defined approach also supports better comparison between different calibration events and facilities.

• Instrument transformer calibration
• Uncertainty evaluation
• Measurement traceability
• Metrology and test reporting
• Power system verification