CT6904A - High-precision AC/DC current sensor, 500 A / 4 MHz
High-accuracy pass-through AC/DC current sensor, zero-flux detection with flux gate technology, currents up to 500 A, bandwidth from DC to 4 MHz, CMRR of 120 dB at 100 kHz, linearity ±5 ppm, 3 m cable length with ME15W connector
Product information "CT6904A - High-precision AC/DC current sensor, 500 A / 4 MHz"
Banner Specs:
More than specs – find more details here:
🔗 Measure Power with Precision – Across All Applications
- AC/DC currents up to 500 A
- Frequency Bandwidth DC to 4 MHz (amplitude), DC to 1 MHz (phase)
- Basic accuracy 0.027 %
- 120 dB CMRR at 100 kHz
- Output voltage ratio 4 mV / A
USPs:
- Supports phase-shift correction when used with HIOKI power analyzers
Applications:
- Testing and analysis of electric vehicle (EV) inverter motors
- Measurement of inductor and transformer losses
- Evaluation of wireless charging systems
- Power consumption measurements in renewable energy systems
In detail:
The HIOKI CT6904A AC/DC Current Sensor is engineered for high-precision current measurements, supporting currents up to 500 A with a wide frequency bandwidth from DC to 4 MHz. Employing advanced zero-flux detection with flux gate technology, the sensor achieves exceptional linearity of ±5 ppm and a high common-mode rejection ratio of 120 dB at 100 kHz, ensuring accurate and reliable measurement even in noisy environments.
The HIOKI CT6904A AC/DC Current Sensor is engineered for high-precision current measurements, supporting currents up to 500 A with a wide frequency bandwidth from DC to 4 MHz. Employing advanced zero-flux detection with flux gate technology, the sensor achieves exceptional linearity of ±5 ppm and a high common-mode rejection ratio of 120 dB at 100 kHz, ensuring accurate and reliable measurement even in noisy environments.
The CT6904A works directly with HIOKI Power Analyzers and Memory Recorders, which
supply power to the sensor via the ME15W connector. When combined with a HIOKI sensor
unit (CT9555, CT9556, or CT9557), it can also be used with oscilloscopes or other DAQ
systems, providing a voltage output ratio of 4 mV/A. Its robust construction, 32 mm (1.26 in) core diameter, 3-meter cable length, and maximum voltage rating of 1000 V CAT III ensure
flexible installation and safe high-voltage operation across diverse applications.
The CT6904A delivers exceptional measurement accuracy, making it ideal for applications
where precision is critical. It achieves a basic accuracy of ±0.025% of reading plus ±0.007%
of full scale for DC measurements. For AC measurements, the basic accuracy is ±0.02% of
reading plus ±0.007% of full scale. Combined with its wide frequency bandwidth, this
performance ensures reliable results across both low- and high-frequency applications.
Compared to other current sensors on the market, the CT6904A minimizes the impact of
conductor position on measurement values, ensuring highly reproducible results. While the
effect of conductor position typically becomes more significant at higher frequencies, the
CT6904A effectively reduces this impact, delivering stable and reliable measurements. This
high reproducibility is especially valuable when comparing the losses of multiple inductors or
transformers, establishing the CT6904A as a top choice for loss measurements in such
applications.
The CT6904A also supports phase shift correction functions of HIOKI Power Analyzers,
including the automatic correction function of the PW8001 Power Analyzer. These features
ensure precise power analysis in dynamic, high-frequency applications, making the sensor
ideal for evaluating high-frequency inductor and transformer losses, wireless charging
systems, and EV inverter motors.
🔗 Measure Power with Precision – Across All Applications
- Instruction Manual
- Carrying case
- Color labels (for channel identification)
- Operating Precautions
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