The growing importance of energy efficiency across all industries is driving demand for increasingly accurate power measurements in high-current applications such as electric vehicles, trains, and renewable energy systems. While Yokogawa's conventional CT series current sensors can be used in conjunction with tools such as the company's network analyzers to perform multi-channel measurements of large AC/DC currents and provide valuable information needed to meet efficiency targets, their installation and removal require disconnecting cables. With its clamp-on design, the CT1000S is a convenient and highly accurate high-current, high-bandwidth measurement tool that eliminates the need to disconnect cables.
Key Features
1. Wide Bandwidth and High Current Measurement
The CT1000S is capable of measuring AC and DC currents up to 1000A and has a wide measurement frequency range from DC to 300 kHz. High CMRR and excellent linearity of frequency characteristics ensure accurate power measurement in high-frequency applications that have drastic changes in current levels and therefore require a wide dynamic range, while high resistance to electromagnetic noise ensures more accurate readings.
2. Pairable with power analyzers and waveform measuring instruments
For tasks such as evaluating the fundamental frequency components of the inverter carrier and reactance losses that require wide bandwidths and measuring large currents, the CT1000S can be paired with Yokogawa power analyzers and waveform measuring instruments.
Pairing examples:
- The CT1000S can be used with the DL950 ScopeCorder to perform measurements in the kHz range for fundamental frequency and carrier frequency component analysis.
- The CT1000S can be used with the WT5000 precision power analyzer to perform high-precision power measurements. The motor evaluation function uses the torque and encoder outputs to simultaneously evaluate up to four motors.
3. Ease of Installation:
Thanks to a clamp design that eliminates the need to disconnect cables, the CT1000S current sensor is easy to install and remove. To ensure stable measurements and improve reproducibility, the CT1000S sensor unit and cable can be locked in place. Cable lengths of 3 m, 5 m, and 10 m are available.
Main target markets
- Automotive
- Renewable energy
- Shipbuilding, railway infrastructure
Applications
- Evaluation and testing of inverters, motors, power conditioners and other components
- Development and evaluation of electric vehicles
- Testing of large inverter motors used in ships and trains
