Yokogawa WT500

YOKOGAWA WT500 Power Analyser (call for availability)The Yokogawa WT500 Power Analyser is a Mid Range product for single phase and three phase power measurements. It is designed into a compact half-rack size chassis which can also be double rack mounted. Standard features include a color TFT display and USB interfaces for communications and memory. The instrument has a basic accuracy of 0.1%, maximum inputs of 1000 Vrms, 40 Arms and a measurement bandwidth of DC to 100 kHz.As internet and personal computer usage expand at exponential rates, so does a growing demand for energy efficient computers and servers. Leading this movement is the Standard Performance Evaluation Corporation (SPEC), who publishes benchmarks that evaluate the power and performance characteristics of volume server class and multi-node class computers. SPEC is a non-profit corporation, formed to establish, maintain and endorse standardized benchmarks for the latest generation of high-performance computers.The SPECpower_ssj2008 V1.10 Industry-Standard Benchmark is the first of its kind. This benchmark measures power consumption in relation to the performance of server-class computers. It makes use of highly accurate Power Analysers to make these power measurements. Some of the key requirements of the Power Analysers listed by SPEC are:

Over all measurement accuracy of 1 % or better

Store measurements to an external device at a rate = 1/sec

Crest Factor of at least 3 or greater

Start and Stop recording/logging from an external controller

Analyser calibration must be traceable to NIST (U.S.A)

The Yokogawa WT500 Power Analyser is listed and endorsed as an accepted device by SPEC for performing these accurate power measurements. With a bandwidth of DC and 0.5 Hz to 100 kHz, the Yokogawa WT500 Power Analyser offers a base accuracy down to 0.1 %. The meter can be controlled by an external controller using USB, GPIB or Ethernet communication interfaces and can provide update rates as fast as 10/sec (100msec).Features and Specifications of the Yokogawa WT500 Power Analyser include:

Basic Power Accuracy: 0.1% of reading + 0.1% of range

Measurement power bandwidth: DC, 0.5 Hz to 100 kHz

Input Elements: 1, 2, 3

Voltage Range (Crest Factor = 3):   15/30/60/100/150/300/600/1000(V)

Cur range (Crest factor=3) - Direct Input: 0.5/1/2/5/10/20/40 [A]

Cur range (Crest factor=3) - External Sensor Input: 50 m/100 m/200 m/500 m/1/2/5/10 [V] (opt.)

Guaranteed accuracy range for voltage and cur ranges: 1% to 110%

Main Measurement Parameters include: Voltage, cur, active power, reactive power, appa power, power factor, phase angle, peak voltage, peak cur, crest factor

Measurement Parameters include: Peak hold (instantaneous maximum value hold, MAX hold, Voltage RMS/MEAN simultaneous measurement, RMS/MEAN/AC/DC simultaneous measurement, Average active power (user defined), Active power amount (WP), Appa power amount (WS), Reactive power amount (WQ), Efficiency, Frequency: 2 channels (up to 6 channels with option /FQ)

Sampling Frequency: 100 kS/s approximately

Harmonic Measurements (w/ opt. G5)

Deltal Calculation Function: (w/ opt. DT)

Display Formats: In addition to numerical data, the WT500 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 (opt. G5)

Storage: 20 MB internal / 1 GB to USB

Interfaces, USB, GPIB (opt. C1), Ethernet (opt. C7), VGA Output (opt. V1)

Removable Storage: USB

Other Yokogawa Power Meters:

Yokogawa WT210

Yokogawa WT230

Yokogawa WT1600

Yokogawa WT1800

Yokogawa WT3000