What does 4000 VA mean?
Hi all, What exactly does 4000 VA mean in an autoformer? In a generator? In an inverter? Thanks in advance.
Forum Discussion
VA rating like GVW rating is a maximum rating. A generator rated 4000VA can not supply more than 4000W of power. And it can only do it if the load is purely resistive or power factor of the load is 1.0. Any other loads, inductive or capacitive will cause loss of part of VA that will not do any work. Any capacitance or inductance of the load will only affect transient states in DC circuits but in AC circuits in plays major role. Capacitance of the load in AC circuits causes current peaks to occur before voltage peaks and inductance of the load causes voltage peaks to occur before current peaks. This phase shift has to be eliminated for most efficient operation-thus power factor correction.
The converter with poor power factor correction will cost you extra every time you use it, just like a car with poor mileage.
The converter with poor power factor correction will cost you extra every time you use it, just like a car with poor mileage.
