Historical
NEMA ANSI C37.55:2002
American national standard for switchgear - medium voltage metal-clad assemblies - conformance test procedures
Applies to all medium-voltage metal-clad switchgear assemblies designed, tested and manufactured in accordance with ANSI/IEEE C37.20.2, Metal-Clad Switchgear. Covers selected tests to demonstrate conformance with Section 6 of ANSI/IEEE C37.20.02.
NEMA: National Electrical Manufacturers Association [nema]