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Please help identifying these two marks on a step up transformer

(1/1)

Goophy629:
They are on a 110/120v to 220/240v step up transformer (those travel size thing),
not sure what they really mean.

bob91343:
I suspect the second one indicates for indoor use only.

Cubdriver:
The first one appears to indicate that it is an isolation transformer (no electrical connection between primary and secondary)

https://www.iso.org/obp/ui#iec:grs:60417:5222

-Pat

old-jo:
For the first symbol: http://www.cycloflow.com/2014/11/markings-and-symbols-on-transformers.html


--- Quote ---
* Equipment designed for indoor use only.
* The IEC 60417-5957 (ISO symbol does not have the arrow)
--- End quote ---

The ISO/IEC symbol that does not have inside-pointing arrow: https://www.iso.org/obp/ui#iec:grs:60417:5957

Goophy629:
 :-+ thanks all for the info

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