The PFC50 charger by Manzanita Micro 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 50 amps (if the battery voltage is lower than the input voltage) or draw 50 amps from the line (if the line voltage is lower than the battery voltage).
The buck enhancement option allows over 75 amps out.
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 50 Amp circuit.
The chart that shows the amps delivered by a beta test unit using the two most common line voltages is (not yet available). A unit with buck enhancement is shown below.
Efficiency is 85 to 95% depending on input and output voltage.
Power factor is better than .995 at full power into 400 volts. Power factor degrades a lower throttle setting because the input filter capacitor current causes a phase shift on the input. See chart below.
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 through a 50 amp breaker.
The PFC50 weighs 42 pounds and resides in a box that is 19.5 x 10.5 x 6.5 inches.
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