HIOKI E.E.

Thermal Management
Product Evaluation

Wireless Data Logger
Capable of consolidating all measurement data into a single unit—including temperature, voltage, CAN signals, and current unit inputs.

Motor Production / Motor Development
Quality Assurance / Manufacturing Engineering

A dual‑mode partial discharge detector designed to identify subtle insulation defects hidden inside motors

Automotive Testing
Flicker, Harmonics, and Interharmonics Evaluation

The PW4001 is a high‑precision, portable 4‑channel power analyzer. It achieves HIOKI’s highest DC accuracy of ±0.04% and supports a measurement bandwidth from DC up to 600 kHz. By maintaining its accuracy specifications across the entire bandwidth, it enables reliable measurements from low‑frequency DC to high‑frequency switching signals.

Despite its compact and portable design, the PW4001 delivers the measurement performance required in R&D and production environments. It is suitable for a wide range of applications, including field testing, laboratory evaluation, and production line inspections.

Evaluation of Multi‑phase Motors and High‑frequency Inverters

We want to evaluate multiple inverters at the same timing.
The system can simultaneously display key parameters required for power conditioner evaluation—such as efficiency, power loss, fundamental reactive power (Qfnd), DC ripple factor, and three‑phase imbalance—allowing highly efficient and comprehensive performance assessment.