Product Description

WT500 Yokogawa Power Analyzer

The WT500 Yokogawa Power Analyzer can be used for single- as well as three-phase power measurements. It includes a color TFT display and USB interface for communications and memory. having basic power accuracy of 0.1%, maximum inputs of 1000 V, 40 A, and a measurement bandwidth of DC to 100 kHz.

Basic Features

• Measurement of DC and AC signals simultaneously and calculate input-to-output efficiency
• Separate integration functions for charge/discharge and bought/sold power.
• Can Save measured data directly to USB memory.
• Easy setup with cursor keys. measurement of normal data and harmonic data with the harmonic measurement, /G5 option simultaneously.
• WT500 Yokogawa power Analyzer series for power evaluation of energy-saving equipment.

Details of WT500 Yokogawa Power Analyzer

Newly Designed Architecture

Intuitive control by using cursor keys in four different directions.
To reduce setting errors, menus display settings in order of relative importance in order.

Measured Value Direct Save Function

Two USB ports for peripherals are installed for direct data saving (up to 1 G byte) in USB memory at the shortest intervals.
The saved data can be opened in applications such as Excel.

WT500 Yokogawa Power Analyzer A Variety of Display Formats

In addition to numerical data, the WT500 Yokogawa Power Analyzer can display input signal waveforms and trends (time variation of numerical data).
Bar graph display and vector display are also available with the harmonic measurement (/G5) option.

*1 Waveform of up to approximately 5kHz can be displayed.
*2 Excludes single-phase models.

A split screen display for numerical values and waveforms is not available.

Simple Setting and Display of Efficiency

Two efficiency calculations can be set by selecting input elements or output elements from a list.

USB Memory Storage Function

Only necessary items within the measured data like the voltage, current, and power can be saved in USB memory in binary or CSV format (up to 1 GB).

Files saved in CSV format can be opened in general-purpose applications such as Excel to allow displaying of data in graphs.

Variety of Integration Functions

In addition to integration functions of active power (WP), current (q), reactive power (WQ), and apparent power (WS), a new feature provides a measurement of bought and sold watt-hours. Also, average active power can be calculated over an integration interval.
This feature is useful for evaluating the power consumed by intermittent-control instruments in which the power value fluctuates. Average active power is calculated by using user-defined settings.

GP-IB Communication (/C1)

GP-IB communication enables you to control the WT500 or transfer data from a PC.

Ethernet Communication (/C7)

Data can be transferred via Ethernet* communication.
It enables file transfers using an FTP server.

* 100BASE-TX

External Current Sensor Input (/EX1, /EX2, /EX3)

Current can be measured by using current clamps without disconnecting power supply wiring (voltage output type). By setting an external current sensor conversion ratio, it can support various types of current clamp-on probes.

VGA Output (/V1)

By connecting to a monitor, you can create large displays of numerical values and waveforms. This function is convenient for simultaneously confirming data on multiple monitors, or checking data remotely.

Harmonic Measurement (/G5)

This function enables simultaneous measurement of normal and harmonic data. Harmonic components of up to the 50th order can be measured. With the Yokogawa Power Analyzer WT500 you can simultaneously confirm voltage, current, and the distortion factor (THD) as well as measure the distortion factor without switching modes.

Delta Computation (/DT)

This function allows you to calculate individual phase voltages and phase currents from the line voltages and phase currents measured in a three-phase, three-wire (3P3W) system. The phase voltage can be calculated from the line voltage measured with the three-phase, three-wire (3V3A) method. This is useful when you want to determine the phase voltage in a DUT with no neutral line by using the three-phase, three-wire (3V3A) method.

Note: This function cannot be installed on products with only one element.

Added Frequency Measurement (/FQ)

In addition to the standard two channels of frequency measurement, an option is available for frequency measurement on all channels. This option provides frequency measurement of voltage and current on all channels with input elements 1 through 3 installed. This is necessary when you want to measure voltage and current frequency from the instrument’s I/O as well as voltage and current frequencies of multiple items under test at the same time.