UL 551
What is the laboratory for UL 551?
For UL 551, laboratory is TUV Rheinland of North America, Inc; standard title is Transformer-Type Arc-Welding Machines, verified against its source on 2026-09-17.
UL 551 | Transformer-Type Arc-Welding Machines |
— osha.gov, retrieved 2026-08-10
- Laboratory
- TUV Rheinland of North America, Inc.
- Standard number
- UL 551 verified
- Standard title
- Transformer-Type Arc-Welding Machines verified
Source
- osha.govhttps://www.osha.gov/nationally-recognized-testing-laboratory-program/tuv