GTN 650 Power Requirements

stickandrudder1 · #1 07-25-2011, 07:29 PM

Can anyone tell me the power requirements of the GTN 650. I've looked around everywhere on the internet and cannot find an installation manual for the 650. Garmin doesn't make it available online. I guess a good estimate would be the figures for the 430W.

MCA · #2 07-27-2011, 08:01 PM

I just installed one. They have different specs for 14 and 28v systems, but assuming 14v then the comm circuit is 10A breaker and the nav/main circuit is 7.5A breaker. Your dealer should make the harness itself for you.

TX7A · #3 07-27-2011, 08:30 PM

Marc,

Would you happen to know the "sustained amps" for the 650?
I guess that would be the NAV & GPS receiving and the COMM mic keyed.

Thanks much!

stickandrudder1 · #4 07-28-2011, 08:56 PM

14V
Main Connector 1.6A Typical 2.8A Max
Comm Connector .45A Typical 5.66A Max (16Watt) 4.02A (10Watt)
Nav Connector .6A Typical 1.16A Max

28 V
Main Connector .8A Typical 1.5A Max
Comm Connector .21A Typical 2.33A Max(16 Watt) 1.76A (10 Watt)
Nav Connector .3A Typical .58A Max

TX7A · #5 07-28-2011, 10:05 PM

Quote:

Originally Posted by stickandrudder1

14V
Main Connector 1.6A Typical 2.8A Max
Comm Connector .45A Typical 5.66A Max (16Watt) 4.02A (10Watt)
Nav Connector .6A Typical 1.16A Max

28 V
Main Connector .8A Typical 1.5A Max
Comm Connector .21A Typical 2.33A Max(16 Watt) 1.76A (10 Watt)
Nav Connector .3A Typical .58A Typical

Hey, thanks! Mr. S&R