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What’s special about HIOKI’s AC Leakage Current Clamps?
No matter if they are based on hall-sensor or zero-fluxgate technology: HIOKI is famous for their high-end AC/DC current sensors – and they have been for many years. Given that history and experience, it is not surprising that HIOKI also offers a large variety of clamp meters, including three AC leakage current clamps.
The key to efficient high-voltage batteries
To be firmly pushed back into your seat when kicking down the “accelerator pedal” in an electric sports car, the high-voltage battery pack needs to feed a high current to the electric drive motor. This in turn requires batteries that have a low resistance – and the right measurement technology.
Accurate High Voltage Power Measurement
HIOKI’s all new High Voltage Divider VT1005 is an important addition to the HIOKI power measurement solutions. In combination with one of the HIOKI power analyzers, the VT1005 enables to accurately measure power up to 5kV. Especially for high voltage and high frequency applications with SiC and GaN semiconductors, the VT1005 realizes a huge improvement in accuracy over currently available solutions. Additionally, the for loss measurement of HV coils and transformers the new VT1005 is the perfect choice because of its 4MHz bandwidth.
High Precision Current Logging. Ultra-Compact
Optimizing the energy efficiency of electrical systems remains a continuous challenge. To address this, HIOKI has designed an innovative multi-channel current measurement solution tailored specifically for development teams in the electrical and e-mobility industry. For the first time, even the smallest currents in an Electric Vehicle (EV) or other electrical systems can be measured and logged individually by using ultra-compact, high-precision current sensors. By analyzing this data, engineers can gain valuable insights and draw conclusions on how to significantly improve energy efficiency.
Zero-Flux Current Sensors: Like in “Back to the Future”?
Do you remember the “flux capacitor” that Doc Brown invented in “Back to the Future”? It was the core component in that iconic DeLorean which – after supplying it with 1.21 GW of energy – would allow Marty McFly to travel through time.
Current Sensors: How much is the drift?
What does "DC drift" mean? Is it when the measured value starts shifting after 20 seconds? Or when it drifts 20% higher after half an hour?
Phase Shift Correction: It takes two to tango
Phase shift correction in power analysis is like dancing a tango: it takes two – the power analyzer supporting the function as well as a suitable sensor with a known phase delay. If one of them is missing… well… just imagine that tango…
Have you ever experienced more than 100% efficiency?
If your power inverter measurements show an efficiency of more than 100%, or the measured values sound too good to be true, it could mean that either you found the holy grail, or -more likely- that there is a measurement error caused by phase shift. With the introduction of SiC and GaN semiconductors in inverter drives for EVs or DC/DC converters, the switching frequencies have increased considerably, and this makes electrical power measurement more challenging.
Coil loss measurement. Accurate. In seconds.
The increasing deployment of SiC and GaN semiconductors in power electronics lead to higher switching frequencies. As a result, smaller and lighter coils can be used in power converters. This also puts major challenge for measurement technology that you need to improve efficiency. Conventional power analyzers produce inconsistent and even incorrect measurement results when analyzing coil loss at the high switching frequencies. The key to easily obtain accurate and repeatable results is automatic phase shift correction. HIOKI makes this possible by perfectly synchronizing the power analyzer with our current sensors and high voltage dividers.