Charger/Discharger for Rechargeable Batteries (Small-capacity Type)

Customized Power Supply Systems

Charger/Discharger for Rechargeable Batteries
(Small-capacity Type)

This is a high-precision 4-quadrant power generative charger/discharger, which can also be applied to DC electronic load.

4 Quadrants for Charging/Discharging Secondary Batteries

This is a bi-directional power supply system, which can be applied in a wide range of applications from development to product testing.

High Precision Fast Response

RISC microcomputer and IGBT element are used to achieve high-precision output current and voltage.

Wide Output Range

+/- polarity voltage output enables wiring voltage drop compensation.

Effective for Energy Saving

High efficiency and high power factor are provided in addition to the power regeneration function for the commercial power supply, effective for energy saving.

Specification

Power voltage	Single-phase 200/220VAC+/-10%, 50/60Hz+/-5% with insulating transformer (separately installed)
Output voltage	+/-250VDC+/-20A (with EMI filter) Voltage accuracy: +/-0.2% FS Current accuracy: +/-0.2% FS Ripple: +/-0.2% rms
Control method	AC side: Power regenerative input power factor 1 control by PWM converter DC side: Constant-voltage/constant-current control by full bridge
Protection	Input overcurrent, output overcurrent, overvoltage/undervoltage (battery) (soft/hard), intermediate overvoltage, fuse, high-temperature (fin) current control error (set value +/-α), interlock signal (emergency stop), on/off signal, zero current signal
Display	Ammeter, current-flow/alarm LED lamp
Operation method	Operation control from host PC by RS-485 communication
Cooling method	Forced air cooling
Operating environment	Ambient temperature: 0 to 40 deg.C (however, 25 deg.C+/-10 deg.C for precision)
Others	DC power resistance load -> Power regeneration
Application	FC (fuel cell) and such -> Electronic load device


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