Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
When I use my max amount of votes per day, I still can upvote comments. Whys that? I can vote as many of comments as I want
There is a separate limit of 30 per day, listed over on Meta SE:
The Complete Rate-Limiting Guide