Depending upon the outside temp you could have a gross overcharge.
Sweat back to the compressor means NOTHING. That is like saying the suction line is beer can cold which also means NOTHING.
I hope you pulled a vacuum properly on the system before you charged it. If you did what was the micron rate when done? See below Vacuum: How it relates to the air conditioning service - SPX Robinair
All systems being field built have moisture and non condensibles these must be removed prior to charging the system so you might have moisture/non condensibles along with the refrigerant in your system causing problems.
If you just brazed the lines then opened the condensing unit valves then you will have a problem if a good vacuum was not pulled.
At any rate the compressor is probably going off on the internal electrical overload and that is probably because the suction line is not going back to the compressor cold enough to keep the compressor windings happy. Keep doing that and the compressor windings will probably burn out then you will have a bigger problem replacing the compressor.
I highly recommend that you contact a qualified service person to do a ON SITE survey of your system and take corrective action before you turn this into a major problem.
There are many other possibilitys like the wrong piston flow rater/improperly installed expansion valve etc but to get to the true problem you have to be on site to see all the parameters and that cannot be done from here. Good luck.
On last item depending upon your systems refrigerant flow device you need to set the operating pressures by superheat or subcooling. The amount of refrigerant that is in the system from the factory means NOTHING and adding more refrigerant to the system by so many ounces per foot of additional line means NOTHING. Superheat or subcooling is the ONLY way to properly charge a system. Many manufactures will say you can also charge by refrigerant weight/pounds/ounces but that will only get you close not perfect.