NB/T 42072-2016 in English

This document provides guidelines for the compilation of product model numbers related to relay protection and safety automatic devices. It outlines the principles and methods for standardizing model numbering to ensure consistency and clarity in product identification. The content covers the structure of model numbers, the inclusion of technical parameters, and the representation of key characteristics. It also specifies the format and rules for the use of letters and numbers within the model numbering system. The document serves as a reference for manufacturers, designers, and users in the field of power systems, facilitating communication and interoperability among different stakeholders. It includes examples to illustrate the application of the guidelines in practical scenarios. The information presented is intended to support the development and application of standardized product models in the industry.