Hello Turtle, and welcome to the forum.
Yes, the EBW reads the imp format.
There's information about the device on our wiki here:
https://wiki.mobileread.com/wiki/EBookwise-1150
and on imp software and conversion programs here:
https://wiki.mobileread.com/wiki/IMP_software
Also take a look at the Fictionwise/Ebookwise section of the forum.
You mention Russian. This suggests that you have been considering Book Designer for conversion to imp. You can find English instructions in this thread:
https://www.mobileread.com/forums/showthread.php?t=11786
and more useful information on our wiki:
https://wiki.mobileread.com/wiki/Book_Designer
There's a link to the wiki at the very top of this page, towards the left. It's very useful, I think.
Also check out our free book uploads: click on "ebooks" on the blue bar near the top of the page.