DL/T 1952-2018 in English

This document provides a detailed specification for the calibration of transformer winding deformation testers. It outlines the technical requirements, calibration methods, and procedures to ensure the accuracy and reliability of the devices used in the measurement of winding deformation in transformers. The content covers aspects such as the scope of application, reference standards, calibration items, and the conditions under which the calibration should be performed. Additionally, it includes guidelines for the preparation of test samples, the environmental conditions required during calibration, and the documentation of calibration results. The document is intended to support the proper use and maintenance of transformer winding deformation testers, ensuring consistency and precision in the measurement process across different applications and environments.