- Palm-sized sensors enable high accuracy, high-current, and wide bandwidth measurement in confined spaces -

Yokogawa Test & Measurement Corporation announces the release on September 9 of its new AC/DC split core current sensors, the CT500SA  and CT200SA. These products have been developed to meet the need for more accurate and simplified current measurement in high current applications such as electric vehicles (xEVs) and renewable energy where energy efficiency is increasingly important. Designed specifically for space-constrained environments, such as in-vehicle xEV testing, they offer high-accuracy current measurements for the 200 A and 500 A ranges. The sensors are compatible with both power analyzers and waveform measurement instruments, delivering improved testing reliability, efficiency, and reduced sensor costs.

Development Background
Automotive and electrified vehicle (xEV) validation requires that measurements of inverters and motors take place post-assembly. At this stage, the space around components is limited, and cables cannot be cut. While through-hole sensors may offer greater accuracy, they require wires to pass through their central aperture. This creates serious logistical installation and removal hurdles in late-stage production testing. Split core current sensors, on the other hand, readily meet these requirements as they clamp directly onto wires. Given that engineers typically have to install and remove sensors repeatedly as they progress through test phases and switch between waveform and power analysis, split core current sensors use a far more practical installation method. 


You can find the full press release with additional specifications attached as a PDF and on our website:
https://tmi.yokogawa.com/eu/news/press-releases/2026/yokogawa-test-measurement-to-release-ct500sa-and-ct200sa-acdc-split-core-current-sensors/