How does one decide whether to spec a square wave vs. sine wave inverter for an offgrid system?
The sine wave units tend to be quite a bit more expensive, but also have many valuable features in terms of charge control, managing a standby generator, etc. These issues I can understand and explain. Where I can't find good data is the impact of a square wave AC vs an approximate sine wave on equipment in the home. There's lots of anecdotal info on burned out appliances and such, but I can't seem to find any hard data on what types of equipment are likely to suffer and how bad.
Most confusing is that many of the items that are claimed to be vulnerable are really DC devices that rectify the AC anyway!
Pointers to good reading would be much appreciated.
The sine wave units tend to be quite a bit more expensive, but also have many valuable features in terms of charge control, managing a standby generator, etc. These issues I can understand and explain. Where I can't find good data is the impact of a square wave AC vs an approximate sine wave on equipment in the home. There's lots of anecdotal info on burned out appliances and such, but I can't seem to find any hard data on what types of equipment are likely to suffer and how bad.
Most confusing is that many of the items that are claimed to be vulnerable are really DC devices that rectify the AC anyway!
Pointers to good reading would be much appreciated.