The Kikusui PLZ series comprises high-performance DC electronic loads for testing and evaluation of power supplies, batteries, and power components. These instruments operate in multiple modes: constant current (CC), constant voltage (CV), constant resistance (CR), and constant power (CP), plus combined modes CC+CV and CR+CV. Built-in CPU control delivers multifunctionality and precise current settings with exceptional resolution. High-speed load simulation is enabled by stable, high-performance current control circuits with slew rates reaching 60 A/µs on PLZ-5W models and rise/fall times of 10 µs on PLZ-4W models.
## Technical Specifications
**Operating Modes**
• Constant Current (CC)
• Constant Voltage (CV)
• Constant Resistance (CR)
• Constant Power (CP)
• Constant Current + Constant Voltage (CC+CV)
• Constant Resistance + Constant Voltage (CR+CV)
**Communication Interfaces**
• GPIB
• RS-232C
• USB (USB 2.0)
• LAN (LXI Compliant on PLZ-5W series)
## Key Features
**Dynamic Response & Control**
Slew rates to 60 A/µs (PLZ-5W) or 10 µs rise/fall times (PLZ-4W). Slew rate adjustment is continuous and variable. Switching function operates up to 20 kHz in CC and CR modes with adjustable level, frequency, and duty factor parameters. Soft-start function prevents inrush current during load application.
**Precision & Resolution**
High-precision current settings deliver resolution as fine as 10 A (PLZ164/164WA L range) or 50 µA (PLZ-4WL, L range).
**Extended Capability**
Specific models (PLZ164WA, PLZ664WA) support 0V input operation, essential for single-cell fuel cell and low-voltage device testing. Sequence function enables complex load pattern programming with up to 10,000 steps (PLZ-5W) or 1,024 steps (PLZ-4WH). System expansion via booster units increases current and power capacity for large-scale applications.
## Typical Applications
Power supply evaluation, battery testing, fuel cell characterization, semiconductor device validation, and dynamic load simulation in automated test environments.
## Compatibility & Integration
Standard communication interfaces enable direct integration into automated test systems. LXI compliance on PLZ-5W series supports networked instrument control.
