Equipment category · HCAI/OSHPD OSP
Transformers – Dry Type — OSP Preapprovals
All 20 HCAI/OSHPD Special Seismic Certification preapprovals issued for Transformers – Dry Type. 14 active, 6 expired, across 19 manufacturers. Source data from HCAI · updated 2026-04-21.
Manufacturers with Transformers – Dry Type OSPs
| OSP # | Manufacturer | Expires | |
|---|---|---|---|
| OSP-0008 | Eaton Corporation | 3/11/2032 | Details → |
| OSP-0023 | Schneider Electric Square D | 4/18/2029 | Details → |
| OSP-0025 | ABB | Expired | Details → |
| OSP-0041 | ABB, Inc. | 10/27/2031 | Details → |
| OSP-0056 | MGM Transformer | 8/8/2031 | Details → |
| OSP-0097 | Siemens | Expired | Details → |
| OSP-0109 | Jefferson Electric | 10/26/2028 | Details → |
| OSP-0110 | Powersmiths International Corp. | 1/22/2032 | Details → |
| OSP-0136 | Hammond | 11/22/2028 | Details → |
| OSP-0318 | Powersmiths International Corp | 1/22/2032 | Details → |
| OSP-0332 | Rex Power Magnetics | 12/7/2029 | Details → |
| OSP-0443 | Rypos, Inc. | 6/2/2031 | Details → |
| OSP-0462 | Teal | Expired | Details → |
| OSP-0476 | Getinge | 5/11/2028 | Details → |
| OSP-0483 | Eglerise Power Systems | Expired | Details → |
| OSP-0637 | Schneider Electric Square D | Expired | Details → |
| OSP-0652 | Eaton | 4/1/2032 | Details → |
| OSP-0689 | Hitachi Power Grids | Expired | Details → |
| OSP-0786 | Siemens Energy | 11/6/2029 | Details → |
| OSP-0842 | ACME Electric (a Hubbell Company) | 4/8/2031 | Details → |
About Transformers – Dry Type 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 – Dry Type on a California hospital project? Talk to a Panache engineer.