The KIKUSUI PLZ-U Series is a compact modular electronic load platform for configurable multi-channel DC testing. PLZ-30F and PLZ-50F frames accommodate up to three or five load modules, respectively.
Choose the 75 W PLZ70UA for operation down to 0 V or the 150 W PLZ150U for higher load capacity, with independent, synchronized, or parallel module operation.
The KIKUSUI PLZ-U Series is a modular multifunction DC electronic load platform that combines configurable plug-in load modules with three-channel or five-channel frames for compact multi-device and multi-output testing.
The PLZ-30F accepts up to three load modules, while the PLZ-50F accepts up to five. Two module types are available: the PLZ70UA provides 75 W / 15 A loading with operation down to 0 V, and the PLZ150U provides 150 W / 30 A loading from 1.5 V to 150 V.
Channels can operate independently or synchronously, while adjacent modules of the same model can be paralleled to increase current and power capacity. Built-in switching, sequence, measurement, memory, timer, and remote-control functions support automated characterization of power supplies, converters, batteries, fuel cells, and other DC devices.
The PLZ-30F supports up to three plug-in load modules, while the PLZ-50F supports up to five, allowing the system to be configured for individual or multi-output DUT testing.
Supports constant current (CC), constant resistance (CR), constant voltage (CV), CC+CV, and CR+CV modes for flexible DC device characterization.
The PLZ70UA can operate from 0 V input, supporting testing of single-cell fuel cells and other very-low-voltage DC sources.
Variable slew-rate control and switching operation in CC and CR modes support transient-response testing, with switching frequencies from 1 Hz to 20 kHz.
Sequence programs can execute stored CC or CR load steps with programmable execution time, repetition, and independent programs for each channel.
Channels can run independently, execute synchronized operations, or combine same-model adjacent modules in parallel for increased current and power capacity.
| Specification | PLZ70UA | PLZ150U |
|---|---|---|
| Module Type | 0 V Input Load Module | High-Capacity Load Module |
| Operating Voltage | 0 V to 150 V | 1.5 V to 150 V |
| Maximum Current — H Range | 15 A | 30 A |
| Maximum Power — H Range | 75 W | 150 W |
| M Range Current / Power | 1.5 A / 75 W | 3 A / 150 W |
| L Range Current / Power | 150 mA / 22.5 W | 300 mA / 45 W |
| CC H Range | 0 A to 15 A | 0 A to 30 A |
| CC H Range Resolution | 1 mA | 2 mA |
| CV H Range | 0 V to 150 V | 1.5 V to 150 V |
| CV L Range | 0 V to 15 V | 1.5 V to 15 V |
| Maximum CC Slew Rate — H Range | 1.20 A/μs | 2.40 A/μs |
| Current Ripple | 7.5 mArms | 3 mArms |
| Approx. Weight | 2 kg | 2 kg |
| Specification | PLZ-30F | PLZ-50F |
|---|---|---|
| Maximum Installed Load Modules | 3 | 5 |
| Maximum Independent Channels | 3 | 5 |
| Frame Power Consumption | 33 VA | 40 VA |
| Power Consumption — Fully Equipped | 300 VA | 500 VA |
| Frame Weight | Approx. 5 kg | Approx. 7 kg |
| Weight — Fully Equipped | Approx. 11 kg | Approx. 17 kg |
| Operating Modes | CC / CR / CV / CC+CV / CR+CV |
|---|---|
| Switching Modes | CC / CR |
| Switching Frequency | 1 Hz to 20 kHz |
| Switching Duty Factor | 2% to 98%, 0.1% steps |
| Sequence Modes | CC / CR |
| Maximum Sequence Steps | 255 steps per program |
| Sequence Step Time | 1 ms to 9999 s |
| Sequence Repetitions | 0 to 9999; 9999 provides continuous repetition |
| Soft Start | 0.1 / 1 / 3 / 5 / 10 / 30 / 100 / 300 ms |
| Measurement Functions | Voltmeter, ammeter, and wattmeter |
| Voltage Measurement Range | 0 V to 150 V |
| Voltage Display Resolution | 1 mV below 15.75 V; 10 mV from 15.75 V to 150 V |
| Wattmeter Resolution | 0.01 W below 100 W; 0.1 W at 100 W or above |
| Preset Memory | Three ABC preset memories per applicable mode and range |
| Setup Memory | Four setup memories |
| Battery Discharge Support | Elapsed-time display, UVP, load-off voltage recording, and auto load-off timer |
| Independent Channel Operation | Supported |
|---|---|
| Synchronized Operations | Load on/off, ABC preset memory, setup memory, and sequence execution |
| Multi-Frame Synchronized Control | Up to four frames can be controlled from one frame for supported synchronized operations |
| Parallel Module Requirement | Adjacent load modules of the same model within the same frame |
| Maximum PLZ70UA Parallel Capacity | 75 A / 375 W with five modules |
| Maximum PLZ150U Parallel Capacity | 150 A / 750 W with five modules |
| Mixed Parallel / Independent Configuration | Parallel-operated channels and standalone modules can coexist in the same frame |
| Standard Digital Interfaces | GPIB / RS232C |
|---|---|
| Command Compatibility | IEEE 488.2 / SCPI 1999.0 |
| Frame External Control | Synchronized load on/off, preset-memory control, setup-memory control, load-status output, and alarm-status output |
| Channel External Control | External reference-voltage control, load on/off control, and input-current monitor output |
| Remote Sensing | Supported |
| Protection Functions | OCP / OPP / OVP / UVP / OHP / Reverse Connection Protection |
