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product - YOKOGAWA-TEST-AND-MEASUREMENT - Digital Power Meters & Analyzers

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Digital Power Meters WT300E Series
The WT300E Series Digital Power Meters are the 5th generation of Yokogawas highly recognized high performance low cost product group. They offer updated and innovative measurement functions which will benefit the engineer with basic electrical power measurements. They are the ideal measurement solution for doing Stand-by-Power measurements, Energy Star, and IEC62301 testing, Battery Charger and other low level power measurement.
The WT300E series digital power meters offer users the high performance and reliability customers have come to trust from Yokogawa.
Basic accuracy: 0.1% of Reading
DC measurement: 0.5 Hz to 100 kHz frequency range
Measures all AC and DC parameters
Compact design (half-rack size)
Standard USB, and GPIB or RS232 Interfaces
Low current measurements down to 50 micro-Amps (WT310E only)
High current measurements up to 40 Amps RMS (WT310HC only)
High-speed data update (up to 10 readings per second)
Simultaneous Normal and Harmonic measurements
Optional Ethernet interface
WT ViewerFreePlus Software included
Single Phase measurements with the WT310E series
Split Phase and Three Phase measurements with the WT300E series

The WT300E's enhanced specifications and its wide range of functions let you handle all your measurement applications from low-frequency to high-frequency inverters using a single power meter.

APPLICATION:
# Production line or QA testing of electric devices
Compact half rack mount size helps engineers build smaller test systems with a better return on investment
D/A output and Modbus/TCP* functions for data recording
Multiple communication interfaces: USB, RS-232 or GP-IB and Ethernet capability
The simultaneous measurement of power consumption parameters such as U, I, P, frequency, power factor and harmonics for production line or QA testing, results in reduced tact times, thereby, reducing time and cost of testing. The D/A outputs and communication interfaces enable data to be remotely and flexibly captured. *Modbus/TCP function is available with the Ethernet (/C7) option.

# Development and evaluation tool for home appliances
5mA range allows for small current measurements (WT310E)
Auto ranging function during integration mode
Range skip (range configuration) function provides the ability to select usable ranges in advance. Auto ranging enables the WT300E series to rapidly adapt to changing input conditions.
The range skip function reduces the transition period between range changes. The WT310E can measure both large and small currents accurately in a single test. This can reduce the total evaluation period or remove the need to use two, rather than one, power meters for the application, thereby saving on capital cost of testing.

# Testing to international standards, such as IEC62301, Energy Star and SPECpower*1
The WT310E has a high measurement resolution of maximum 100 W under the 5 mA range setting.
Simultaneous measurement of normal power parameters, harmonic components and THD.
Dynamic input capability of crest factor maximum 300 (Peak value/minimum effective RMS value)
Free PCM software for IEC62301*2 testing
The WT310E together with the Power Consumption Measurement (PCM) software enables users to perform standby power testing in accordance with international standards.

# Evaluation of large current equipment
Direct high current measurements of up to 40Arms without using external sensors (WT310EH)
Auto ranging function for Integration mode.
The WT310EH allows 40 Arms to be directly connected to the input without the requirement to use current clamps or current sensors. This not only provides more precise measurement but also saves on investment costs. The wide current ranges are from 1 A to 40 A and voltage ranges are from 15 V to 600 V.
Users can use it to evaluate special waveform driven devices such as, IH cookers and heaters.

# Automotive- Battery or DC driven device evaluation
Accurate DC measurements: 0.3% total
Direct high current measurement of up to 40A without any external current sensor.
Charge/Discharge energy measurements for batteries

# Duration testing and efficiency measurement for industrial motors and rotating machinery
The WT300E series provides reliable current integration (Ah) and Energy (Wh) measurements for up to 10,000 hours. The D/A option can be used to transmit these measurements to an external data logger or recorder, such as a ScopeCorder, and monitor and log data along with other parameters, such as temperatures, torque, and rotation speed. The Modbus/TCP communication with /C7 option is used to save and monitor the measurement results of up 200 chs. YOKOGAWA GA10 data logging software can be used directly to save data along with other parameters such as temperatures, torque and rotation speed by this Modbus/TCP Protocol.
Integration measurements over long periods of time
Modbus/TCP Protocol for data recording
DC, 0.1 Hz to 100 kHz broad bandwidth capability

# Conformance and evaluation testing of uninterruptable power supplies (UPS)
Maximum harmonic order settings for THD calculations
Efficiency measurements using a single power meter
Average Active Power measurement under integration mode
The WT300E series enables users to conduct conformity tests according to UPS performance testing standards. The WT300E series is used to measure and calculate input & output levels, efficiency, frequency and THD. The average active power data also provides accurate values of power consumption. This equipment along with the WTViewerFreePlus software helps to simultaneously measure all necessary parameters required to test a UPS, thereby reducing the evaluation time.