The Kikusui PLZ1003W is a 1000 W DC electronic load engineered for characterization and lifetime testing of DC power sources including switching power supplies and batteries. It delivers four operating modes—constant current (CC), constant resistance (CR), constant voltage (CV), and constant power (CP)—enabling simulation of real-world load conditions with large transient current variations. The unit features a high-performance current control circuit with CPU control, achieving 50 µs response time in constant current mode and supporting programmable rise/fall times from 50 µs to 10 ms. Built-in ammeter, voltmeter, and power meter provide real-time monitoring across a 1.5 V to 120 V input range at up to 200 A DC.
## Technical Specifications
• **Power Rating:** 1000 W
• **Operating Voltage:** 1.5 V to 120 V DC
• **Maximum Input Current:** 200 A DC
• **Constant Current Mode:** 0–60 A (high range), 0–6 A (low range)
• **Constant Voltage Mode:** 1.5 V to 120 V
• **Constant Resistance Mode:** 0.05 Ω–5 Ω (high), 0.5 Ω–50 Ω (low)
• **Constant Power Mode:** 30 W to 300 W
• **CC Response Time:** 50 µs
• **Tr/Tf Settings:** 50, 100, 200, 500 µs; 1, 2, 5, 10 ms
• **AC Supply:** 50/60 Hz
• **Power Consumption:** ~50 VA (55 VA with GPIB board)
• **Rush Current:** ~18 A
## Key Features
• Rapid constant current response enables dynamic load testing of switching supplies and motor loads
• Programmable switching operation time (1–5000 ms) and soft-start ramp (0.1–100 ms)
• Over-current protection at +5% rated current; overheat cutoff at ~105°C heatsink temperature
• Reverse polarity, over-voltage, and overpower protection
• Remote sensing with 5 V reference voltage
## Typical Applications
• Burn-in testing and reliability assessment of DC sources
• Battery load testing under constant power conditions
• Printer and motor load simulation with transient current control
## Compatibility & Integration
• Optional GPIB or RS-232C remote control
• Multi-channel Bus (MCB) support for synchronous control of up to 16 units per interface address
• Part of PLZ-3W series (150 W, 300 W, 600 W, 1000 W ratings)
