Yokogawa Test & Measurement to Release CT500SA and CT200SA AC/DC Split Core Current Sensors

Yokogawa Test & Measurement Corporation announces the release 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.

The main sensor unit of both devices measures a compact 110mm width × 62mm height × 25mm depth, ideal for space-constrained test environments. Each features a single unlock-and-open button for one-handed clamp-on installation, while the body includes both an M4 screw hole and a cable tie slot to secure the sensor in place – directly improving measurement repeatability as outputs are sensitive to positioning.

The CT500SA and CT200SA deliver guaranteed accuracy of ±0.09% of reading + 0.01% of full scale within a temperature range of 23 ± 5°C. This represents an order-of-magnitude improvement over conventional current sensors, providing through-hole sensor level accuracy while retaining the convenience of clamp-on installation. Available frequency bandwidths differ between the two models. The CT500SA delivers a frequency bandwidth of 500 kHz (−3 dB), while the CT200SA extends to 1 MHz (more info).

robenek@dps-az.cz