Focused on rapidly developing industrial sectors such as electric vehicles, renewable energy, and energy-efficient technologies, the WT5000 offers a total measurement accuracy of ±0.03% at 50/60 Hz. This allows for the evaluation of power consumption, losses, and the efficiency of electrical and electronic devices. Specifically, its wide dynamic current range makes it ideal for tests requiring energy-saving design.
One of the essential elements for determining the performance of a power measurement instrument is the analog-to-digital converter (ADC), which performs the analog-to-digital conversion. For greater measurement accuracy, the WT5000 uses an 18-bit converter with a maximum sampling rate of 10 MS/s. This allows for the precise capture of waveforms from today's high-speed inverters.
While the WT5000 has the same dimensions as existing models in Yokogawa's WT series, this model incorporates up to seven input power channels, enabling it to support applications that previously could only be measured by synchronizing several separate instruments. Another advantage is the use of modular plug-in input elements, which can be interchanged by the user at any time.
The 30 A and 5 A inputs can be swapped for testing electric vehicles, fuel cell vehicles, or hydrogen vehicles—ideal when working with a wide variety of motors. The /MTR1 and /MTR2 options of the WT5000 allow for the simultaneous evaluation of up to four motors on a single device. These four inputs enable the measurement of phases A, B, C, and Z of each motor.
Its seven power input modules allow for harmonic measurement in three-phase systems, as well as the simultaneous visualization of harmonics from two functions, each above the 500-thousandth order and up to 300 kHz above the fundamental frequency. This allows for the measurement of the motor's rotational speed carrier frequency at the inverter, as well as the verification of its influence on the motor.
An increasing number of applications require the evaluation of higher current devices; typical examples include electric vehicles and large-scale solar installations. The WT5000's 30 A and 5 A modules include a standard external sensor input for connecting external current sensors used in these applications. For much higher currents (up to 2000 Arms), Yokogawa offers CT series AC/DC current sensors with current output to avoid noise interference. In this case, the WT5000 5 A modules are an ideal complement to these sensors.
