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

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Offering the worlds best power measurement accuracy, the WT3000E provides engineers with a solution for testing and verifying product efficiency. The WT3000E is ideal for the design and testing of Solar Inverters, Motor Drives, Lighting Systems, Uninterruptible Power Supplies, Transformer Testing, Aircraft Power Systems, and other power conversion devices

With basic power accuracy of 0.01% reading, DC and 0.1 Hz-1 MHz measurement bandwidths, and up to four input elements, the WT3000E provides high-accuracy measurement of I/O efficiency.
Basic power accuracy: 0.01% of reading
Both 2 A and 3low0 A input elements can be installed in a single unit
Good readability: 8.4-inch LCD and the range indicator LEDs
Simultaneous measurement with 2 units (Up to 8 power input elements)
Store function: 50 ms data storing interval
Multiple computer interface: GP-IB, Ethernet, RS-232 and USB
Advanced computation function: Waveform computation, FFT analysis, waveform sampling data saving.
The latest IEC61000-3-2 and IEC61000-3-12: Harmonic measurement
The latest IEC61000-3-3 and IEC61000-3-11: Voltage fluctuation / flicker measurement

Select the model most suited to your measurement needs
High accuracy and wide frequency range:
Basic power accuracy:
(0.01% of reading + 0.03% of range)
Frequency range:
DC, 0.1 Hz to 1 MHz
Low Power Factor Error:
Power factor error when cos =0:
0.03% of S where
S is reading value of apparent power
is phase angle between voltage and current
Current Range:
Direct Input:
0.5/1/2/5/10/20/30 [A] or 5/10/20/50/100/200/500 [mA], 1/2 [A] *
2A and 30A input elements can be installed together in a unit.
External Input:
50m/100m/200m/500m/1/2/5/10 [V]
Voltage Range and current range are for crest factor 3
1000 [Vrms] Continuous maximum common mode voltage (50/60 Hz)
Data Update rate: 50 ms to 20 sec
Effective input range: 1% to 130%
Simultaneous measurement with 2 Units


Basic power accuracy of 0.01% reading
The WT3000E can be used as a reference instrument for periodic in-house calibration of general-purpose power measurement instruments, such as the WT310 and WT330.


High accuracy even at low power factors
The WT3000E represents great improvement over previous models in terms of power factor error (it is approximately three times more accurate). With improved measurement accuracy in the lower power factorssuch as with transformers, active power values can be measured with higher precision.

Simultaneous measurement of RMS and the mean
RMS (the true RMS value) and the mean (rectified mean value calibrated to the rms value) can be measured at the same time, allowing for measurement of corrected power (Pc) and other measurements conforming to transformer evaluation standards.
* Current rms and current mean can not be measured simultaneously.

Phase Voltage Confirmation
The built-in delta computation function allows both star-delta and delta-star conversion. For example with delta wiring, you can check the line voltage and phase voltage simultaneously without changing the wiring.