High-voltage switches. Part 1 : High-voltage switches for rated voltages above 1 kV and less than 52 kV

This technical specification addresses the requirements for high-voltage switchgear operating within voltage ranges exceeding 1 kV but remaining below 52 kV. Issued under the framework of international electrotechnical standards, this document serves as an amendment to an earlier foundational text concerning the design, construction, and testing of such electrical apparatus. The update introduces specific modifications and clarifications intended to refine the original safety and performance criteria established for equipment in this class. It focuses on ensuring operational reliability under defined conditions, covering aspects related to insulation, mechanical strength, and contact systems appropriate for the specified voltage limits. By incorporating these adjustments, the document aims to align technical specifications with evolving industry practices and safety expectations without altering the fundamental scope of the parent standard. The content is structured to provide engineers and manufacturers with clear guidelines for compliance when designing, evaluating, or maintaining high-voltage switching devices within the defined upper and lower voltage boundaries.