pianotuna wrote:
Hi Phil,
Here is a quote from Magnum:
"Power Factor Corrected (PFC)Charger: The PFC charger is built into all Magnum inverter/chargers. It uses less energy from a generator than a standard charger using only 15 amps AC per 100 amps versus 23 amps used by standard chargers."
I agree it is not 100% efficient (nothing is), but it is a heck of a lot better than a unit with a PF of 0.7
Those numbers seem conservative, but they may be allowing for other "losses" somewhere, don't know.
23a for a non-PFC 100 amper seems a little high. My 2800VA Honda gen can run 130a of non-PFC chargers before it pops a breaker. The Honda is rated at 2800/120 = 23.3a AC
130 DC amps at 14.8 volts = 1924 and that pops 2800VA. 1924/2800 =0.69 so that works out for PF of 0.7 ballpark if I am doing that right.
The 1600VA Honda (1600/120 = 13.3a) should be able to run (in proportion with the 2800VA one):
1600/2800 x 130a DC = 74a DC non-PFC charger with 0.7 PF, or
100/70 x 74 = 106a with PFC, PF of 1 (actual PFs of PFC chargers are 0.9x though)