Equipment category · HCAI/OSHPD OSP

Transformers – Liquid Filled — OSP Preapprovals

All 6 HCAI/OSHPD Special Seismic Certification preapprovals issued for Transformers – Liquid Filled. 2 active, 4 expired, across 5 manufacturers. Source data from HCAI · updated 2026-04-21.

Filter:All Active only Expired onlyShowing 4 of 6

Manufacturers with Transformers – Liquid Filled OSPs

Cooper Power Systems
GE
Hitachi Energy USA Inc. (formerly ABB)
Howard Industries
Pacific Crest Transformers

OSP #	Manufacturer	Expires
OSP-0098	GE	Expired	Details →
OSP-0370	Pacific Crest Transformers	Expired	Details →
OSP-0399	Howard Industries	Expired	Details →
OSP-0403	GE	Expired	Details →

About Transformers – Liquid Filled OSP preapprovals

Listed records are sourced from the official HCAI OSP page. Always verify status, conditions, and expiration with HCAI before specifying a component. Need PE/SE stamped anchorage calculations for Transformers – Liquid Filled on a California hospital project? Talk to a Panache engineer.

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