Is it normal if the heart rate is 800 per min?

No, I am afraid that even a heart rate of 200 beats per minute is enough to cause death in some cases. Your Maximum heart rate has been shown to be, on average, 220 - (Your Age). If your heart rate is 800 beats per minute you need to contact the eugenics lab you came from and let them know that they succeeded in creating an invincible heart. So good luck with your invincible circulatory system.