You have tried to send all your tokens to etherdelta. EQUAL is self-deflationary token meaning every time you make a transaction you have to burn some of the tokens. Consider it as a fee. Try reading about exact amounts or send half or 90% of your tokens instead of whole bunch. Tutorial which should help you about details: https://medium.com/@EqualToken/how-to-send-equal-tokens-eql-c49f26a9488a