The Kikusui PLZ334W is a 330 W multifunctional DC electronic load engineered for precision testing of power supplies, batteries, DC/DC converters, and fuel cells. Operating across 1.5 VDC to 150 VDC at up to 66 A, it delivers six distinct operating modes—constant current, constant resistance, constant voltage, constant power, and two hybrid modes—enabling comprehensive characterization of switching power supplies and mobile charging circuits. The instrument achieves 16 A/µs slew rate with 10 µs rise/fall time, supporting transient response analysis and waveform simulation. Variable slew rate adjustment compensates for wiring inductance effects during load switching. Measurement resolution reaches 1 mV (voltage), 10 µA (current), and 10 mW (power) across a 5-digit display. Voltage accuracy is ±(0.1% of set + 0.1% of f.s.) in H range; power accuracy is ±(0.6% of set + 1.4% of f.s.) in H and M ranges.
## Technical Specifications
• Maximum power rating: 330 W
• Input voltage range: 1.5 VDC to 150 VDC
• Input current range: 0 A to 66 A
• Mains supply: 100-240 VAC, 47-63 Hz
• Maximum power consumption: 90 VA
• Voltage resolution: 1 mV (low range)
• Current resolution: 10 µA
• Power resolution: 10 mW (low range)
• Slew rate: 16 A/µs maximum; continuously variable
• Rise/fall time: 10 µs
## Key Features
• Six operating modes: CC, CR, CV, CP, CC+CV, CR+CV
• Integrated voltmeter, ammeter, and wattmeter with 5-digit display
• High-speed transient response for load switching simulation
• Soft-start function for inrush current control
• Sequence function enabling automated test programming
• Switching function capability
• Time measurement from load-on to load-off (useful for battery discharge evaluation with Under Voltage Protection)
• Adjustable slew rate to compensate for circuit inductance
## Typical Applications
• Power supply validation and stress testing
• Battery discharge characteristic analysis
• DC/DC converter performance evaluation
• Fuel cell characterization
• Mobile device charging circuit testing
• Switching power supply efficiency assessment
## Compatibility & Integration
The PLZ334W operates from standard 100-240 VAC mains with 47-63 Hz frequency input, supporting laboratory and production test environments.
