What Seismic ratings Does HPS Use?

Frequently Asked Questions Transformer Design 

HPS units meet Risk Category IV (Ip=1.5) for Sds=2.0 per ASCE 7-16 (and equivalent factors in NBCC 2015) for ground-level installations only (z/h=0) for all locations in North America.

HPS units can be designed to meet California OSHPD (Office of Statewide health Planning and Development) requirements. Please see the California OSHPD site for a listing of HPS transformers which have been tested and certified.