Electrolytic Capacitor with Unusual Marking

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The electrolytic capacitor in question has a capacitance of 68 µF and is marked with "400 WV," which is interpreted as the working voltage. The letter "W" is confirmed to stand for "working," indicating the maximum safe operating voltage for the capacitor. Participants in the discussion agree on this interpretation and provide a link for further clarification. The conversation highlights the importance of understanding capacitor markings for safe usage. Overall, the thread effectively clarifies the meaning behind the unusual marking on the capacitor.
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Hello. I own an electrolytic capacitor which capacitance is 68 µF. Something strange is written on it 400 WV. Is it the service voltage ? Probably, but in that case, what is the meaning of the letter W ? Thanks by advance for your replies.
 
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Could it stand for the maximum safe working voltage?I am not sure.
 
Thanks a lot for informations & link
 

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