IEEE C37.71 – IEEE Standard for Three-Phase Manually Operated Subsurface and Vault Load-Interrupting Switches for Alternating-Current Systems
Revision Standard – Superseded.” Requirements are given for three-phase group operated subsurface and vault load-interrupting switchgear with maximum ratings of 600 A and 38 kV, and for utilizing separableinsulated connectors. Definitions are given, and service conditions and ratings are discussed.Design tests, production tests, and construction requirements are included.”
