Installation doesn't start


I’m trying to install openhab using the openhabian image. I unpacked the rar, then put the image on a sd card using 7-zip. Put the card into my Raspberry Pi 3, but then nothing happend. I waited for a while now. On my Pi only the red light is there (I believe the green light should be there when he is installing?)

Hope you can help me, and tell me what I did wrong.

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