JJF 1559-2016 in English

This document provides a detailed calibration procedure for a specific type of electrical measurement instrument used in power systems. It outlines the requirements for accuracy, performance, and verification methods to ensure reliable and consistent measurements. The content covers the technical specifications, calibration equipment, environmental conditions, and procedures for conducting the calibration process. It also includes guidelines for recording and reporting calibration results. The document is intended to support the proper use and maintenance of the instrument, ensuring that it meets the required standards for measurement accuracy and reliability in its intended application. It serves as a reference for personnel involved in the calibration, testing, and validation of the instrument's performance.