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Project: T153700 #30/108

This document serves as a guide for selecting and compiling comprehensive technical specification requirements for disconnect and ground switches rated from 5kV to 800kV that are generally used in air insulated substations. Typical electrical ratings, performance, and test requirements are covered with considerations for operational, environmental, and safety features. Guides for preparing a Detailed Rating Specification, and a Form of Tender are also provided. A summary of the primary reference IEEE and IEC standards are provided together with survey results on the application of industry standards. This guide must be used in conjunction with the referenced industry standards for switches.


High voltage, medium voltage, disconnect switch, ground switch, IEEE C37.30.1, indoor switch, outdoor switch, ratings, continuous current, withstand current, fault-making current, withstand voltages, standards, service conditions, bus, grounding, tests, installation, commissioning