IEEE PC37.81

Annotation of standard text IEEE PC37.81 :

Revision Standard - Active - Draft.

Requirements and guidance for the seismic 1 qualification of metal-enclosed power switchgear assemblies including switching, interrupting, control, instrumentation, metering, and protective and regulating devices mounted therein are provided in this guide. As used in this guide, the word switchgear shall mean metal-enclosed power switchgear assemblies with the requirements as defined in IEEE Std C37.20.1™, Standard for Metal-Enclosed Low-Voltage Power Circuit Breaker Switchgear, IEEE Std C37.20.2™, Standard for Metal-Clad Switchgear, and IEEE Std C37.20.3™, Standard for Metal-Enclosed Interrupter Switchgear. By definition, metal enclosed power switchgear assemblies include metal-clad switchgear, metal-enclosed interrupter switchgear, and low-voltage power circuit breaker switchgear. Metal-enclosed bus or control switchboards are not covered in this guide.

ISBN: 979-8-8557-2721-0, 979-8-8557-2721-0

Number of Pages: 32

Product Code: STDUD28369, STDAPE28369

Keywords: class 1E metal-enclosed power switchgear assemblies, generic response spectrum (GRS), IEEE C37.81™, performance requirements, seismic criteria.

Category: Switchgear

Draft Number: PC37.81/D2, Oct 2025 - UNAPPROVED DRAFT, PC37.81/D2, Oct 2025 - APPROVED DRAFT