This part of IEC 61869 provides the requirements, the methods and the guidelines to be applied on the evaluation of uncertainty in testing the accuracy of instrument transformers (IT) with an analogue or a digital secondary signal for measuring, protection and control purposes, with rated frequencies from 15 Hz to 400 Hz. This document covers the uncertainty evaluation in testing the accuracy of IT (including on-site testing of accuracy) independently of the technology used (either inductive or non-inductive). This document reports on how to take into account the sources of uncertainty in the setups for accuracy and how to combine their effects in order to evaluate the uncertainty in the test results. Metrological traceability to the International System of Units (SI) will always be assumed for both reference devices and devices under test.
- Standard Committee
- IM/MPS - TC39 - Measurements in Power Systems
- Status
- Active Standard
- PAR Approval
- 2024-06-06
- Board Approval
- 2025-12-10
- History
-
- Published:
- 2025-12-15
Working Group Details
- Society
- IEEE Instrumentation and Measurement Society
- Standard Committee
- IM/MPS - TC39 - Measurements in Power Systems
- Working Group
-
UIITC - Uncertainty in IT Calibration
- IEEE Program Manager
- Vanessa Lalitte
Contact Vanessa Lalitte - Working Group Chair
- Carlo Muscas
Other Activities From This Working Group
Current projects that have been authorized by the IEEE SA Standards Board to develop a standard.
No Active Projects
Standards approved by the IEEE SA Standards Board that are within the 10-year lifecycle.
No Active Standards
These standards have been replaced with a revised version of the standard, or by a compilation of the original active standard and all its existing amendments, corrigenda, and errata.
No Superseded Standards
These standards have been removed from active status through a ballot where the standard is made inactive as a consensus decision of a balloting group.
No Inactive-Withdrawn Standards
These standards are removed from active status through an administrative process for standards that have not undergone a revision process within 10 years.
No Inactive-Reserved Standards