PFC20 Battery Charger with buck enhancement option.
The Buck enhancement option allows the charger to make more current when the battery voltage is less than the peak of the line voltage powering the charger. This option increases the power available below these voltage thresholds by about 50%.
This charger is designed to charge any battery pack from 12 volts to 360 volts nominal (12 to 450 peak). It is power factor corrected and designed to either put out 20 amps (if the battery voltage is lower than the input voltage) or draw 20 amps from the line (if the line voltage is lower than the battery voltage).
The charger will operate from any voltage from 60 to 250 volts AC at either 50 or 60 Hz. The charger has a throttle knob to allow the user to turn the current down when using shared or undersized circuits. This charger is designed to operate at full capacity from a 30 Amp circuit.
The chart below shows the amps delivered by a beta test unit using the two most common line voltages.
Efficiency is 88% to 96% percent on the beta test units depending on input and output voltage.
Power factor is .92 to .9997 and depends on input and output voltage. Low output voltage from high input voltage is the former. High output voltage from low input voltage for the latter.
Safety circuits:
The charger is protected from reverse polarity installation by an internal fuse.
Over temperature conditions cause the current to ramp back to prevent the internal temperature from going over 160F (more air makes more power).
The charger is programmed to be a constant current source and will survive a short circuit indefinitely.
There is a programmable timer to shut off the charger after a user selectable period.
The charger is BatReg aware (turns down or off if a BatReg gets hot.)
This charger is non-isolated. The negative terminal of the battery is connected to the negative terminal of a rectifier bridge with the AC terminals connected to the incoming line.
Weight: 18 pounds
Dimensions: 13" long by 9" wide by 5" tall
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