I am trying to discover all that is required to obtain this 3-year Multiple-Entry Russian Visa. I am an American citizen living in the Czech Republic with my Russian-born wife and we desire to move permanently to Russia.
Our long-range plan is for me to acquire a Temporary Residence Permit and eventually acquire a Permanent Residence Permit. With this in mind, what is the least required regarding health insurance coverage? I suspect with a 3-year Multiple-Entry Russian Visa that within my first 6 months entry I should be able to acquire the Temporary Residence Permit, or is it called a Temporary Residence Visa?
If I become a Temporary Residence Permit or Visa holder what kind of health insurance is required?
When making an application for this 3-year Multiple-Entry Russian Visa at the Prague Russian Consulate will they require an insurance policy for three years? That seems excessive considering I may only be there for 6 months at a time and possibly be outside of Russia for one or more months.
I suspect I will have other questions but for now, this is all I can think of.
I forgot to mention, that we own an apartment in Russia so I do not need some invitation anchored to a hotel but only to our apartment address. And I do not want a private visa, only a 3-year Multiple-Entry Russian Visa as this gives us sufficient time to acquire the Permanent Residence Visa.

I just found the following on Way to Russia RussianVisa/App
For the dates of entry and exit from Russia (fields 10 and 11), you should put the same dates as are written on your invitation. Remember, you can enter and leave Russia any time within this time span, so give yourself 2-3 days extra. Also, the chances of getting a visa are almost 100% if your travel time span is 2 weeks. If it's longer, the consulate might ask additional questions (if we're talking about the tourist visa).

How then does one change the 30-day visa to a 3-year Multiple-Entry Russian Visa based on this information?