Yokogawa WT333E 3-phase Digital Power Analyzer
Description
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Benefits of the Yokogawa WT333E 3-phase Digital Watt/ Power Metrs
- 3-phase digital watt meter, high accuracy with fast display and data update.
- Standby measurements according to IEC62301/EN50564, Energy Star and SPECpower.
- Easy integration into PLC environments with Modbus/TCP (Ethernet).
Yokogawa WT333E 3-phase Digital Power Analyzer
The compact, 3-phase power meters of the WT333E series havee a basic accuracy of ±(0.1% of reading + 0.05% of RMS range) and are ideal for precise measurement of power consumption of electrical devices, as well as for energy efficiency and energy saving studies. The lowest currents, for example, can be measured from 50 µA with specified accuracy.
- Simultaneous harmonic analysis with high bandwidth.
- Automatic adjustment of the data update rate.
- Automatic range switching for integrating measurements.
- Basic accuracy for power measurements (50/60 Hz): ±(0.1% of the measured value + 0.05% of the effective value measuring range).
- Frequency bandwidth: DC, 0.1 Hz...100 kHz.
- Current measurement range direct input: 6 measuring ranges/0.5...20 A.
- RMS voltage ranges: 6 measuring ranges/15...600 V.
- External sensor input EX1: 2.5/5/10 V; EX2: 50/100/200/500 mV/1/2 V.
- Signals with crest factors up to 300 measurable in all ranges.
- Simultaneous measurement of RMS, MEAN, and DC voltage.
- Frequency measurement: 2 channels (voltage and current).
- 4x 7-segment LED displays
- Sampling rate 100 kS/s (16 bit).
- Data update rate 100/250/500 ms/1/2/5/10/20 s, Auto.
- Harmonics analysis incl. THD calculation up to the 50th order available (option -G5).
- Automatic range setting in integration mode.
- Comparator function.
- Interfaces: USB standard, GPIB/IEEE488 or RS232 (selectable), Ethernet (Modbus/TCP) available (option -C7).
- Free PC application software WTViewerEfree for parameterization, control and data acquisition included in the scope of delivery.
Model Overview
| Model | Description |
| WT333E | 3-phase digital Watt meter. Basic accuracy (50/60 Hz): ±(0.1% from measured power value + 0.05% from RMS measurement range), 6 voltage ranges 15...600 VRMS (Crest factor 3), 6 current ranges 0.5 ARMS...20 ARMS (Crest factor 3). Measurement of VRMS, Vmean, VDC, Vpeak, ARMS, ADC, Apeak, W, VA, var, cos phi, deg, ±Wh, ±Ah, CF, h, Hz and math. functions. Standard with integrator, measurement data memory, max. value memory, filter and frequency counter. Standard with USB interface, GPIB/IEEE488.2, or RS232C interface (pease select), test certificate. |
Options
| Option | Description | |
| Standard | USB | |
| -C1 | GPIB/IEEE488 interface | Please select one. Only one optionen (-C1 or -C2) can be selected for free. |
| -C2 | RS232C interface | |
| -C7 | Ethernet interface incl. Modbus-TCP protocol | |
| -EX1 | External sensor input 2.5 V/5 V/10 V | Only one can be selected at a time |
| -EX2 | External sensor input 50 mV/100 mV/200 mV/500 mV/1 V/2 V | |
| -G5 | Harmonics measurement | |
| -DA12 | D/A output (12 channels) | |
| -SPU | Modified voltage range 30...1200 VRMS (max. input voltage 1000 VRMSf), frequency range DC...30 kHz. A calibration protocol has to be ordered separately instead of standard test certificate. | |
| -SPI0,05 | Modified current range 25 mARMS...1 ARMS. A calibration protocol has to be ordered separately instead of standard test certificate. | |
| -SPI0,1 | Modified current range 50 mARMS...2 ARMS. A calibration protocol has to be ordered separately instead of standard test certificate. | |
