Description
Improvement of basic power accuracy:
The WT300E series has realized basic power accuracy ±0.15% (50/60 Hz) by all measurement ranges. It is the highest level accuracy in a compact power meter category. The influence at low power factor has improved to 2 times better (0.1% of S) than that of the previous models.
Wide current ranges:
The WT300E series cover broad ranges of current input from few mA up to 40 A rms. It can measure waveforms which include both AC and DC. Users can make use of it from low currents of standby power to high currents of induction cooking.
Fast display and data update rate:
The fast display and 100 ms maximum data update rate of the WT300E series offers customers a short tact time in their testing procedures.
Consistent Basic Measurement Accuracy for all input ranges.
Auto data update rate function for fluctuating input:
The WT300E series can chase fluctuating input frequencies like motor by changing the data update rate automatically. It can cover from the lowest 0.1 Hz input.
Users can select “AUTO” data update rate added to fixed settings of the previous models. It can detect cycles of input
signal automatically and measure it correctly.
Auto ranging function available in selected ranges
The auto-range function is used to select/change the range automatically in specific ranges. This results in shorter range changing times and thus quicker and more efficient testing.
High performance and reliability:
Simultaneous measurement of all parameters:
WT300E series can measure all DC and AC parameters. It can also measure harmonics and perform integration simultaneously without changing the measurement mode. The WTViewerFreePlus software is used to monitor
and save all these parameters up to 200 parameters.
Convenient measurement functions:
• MAX hold function The maximum values of RMS/PEAK voltage & current active power, reactive power and apparent power can be held.
• Line filter and frequency filter capability these filter functions will cut off unnecessary noise & harmonic components for fundamental waveform measurements.
Integration measurement auto ranging function:
Conventionally, when power meters operate in an integration mode to measure power consumption and standby power, the measuring ranges need to be fixed. However, if the level of the input exceeds the maximum of the
selected range, the results will be incorrect and the test will need to be repeated with higher ranges applied.
The WT300E series has a high speed automatic ranging capability in integration mode which removes this need to repeat the test and integration is continuous and accurate. This function is not only available for ±Wh but also for Ah and DC current.
| WT310E/WT310EH/
WT332E/WT333E (Current EXT sensor input) |
WT310EH (Current Direct input) | |
| DC | ±(0.1% of reading + 0.2% of range) | ±(0.3% of reading + 0.2% of range) |
| 0.1 Hz ≤ f < 45 Hz | ±(0.3% of reading + 0.2% of range) | ±(0.3% of reading + 0.2% of range) |
| 45 Hz ≤ f ≤ 66 Hz | ±(0.1% of reading + 0.05% of range) | ±(0.1% of reading + 0.05% of range) |
| 66 Hz < f ≤ 1 kHz | ±(0.2% of reading + 0.2% of range) | ±(0.2% of reading + 0.2% of range) |
| 1 kHz < f ≤ 10 kHz | ±(0.1% of reading + 0.3% of range)
±[{0.067 × ( f – 1)}% of reading] |
±((0.13 × f )% of reading + 0.3%
of range) |
| 10 kHz < f ≤ 20 kHz | ±((0.13 × f )% of reading + 0.5%
of range) |
|
| 10 kHz < f ≤ 100 kHz | ±(0.5% of reading + 0.5% of range)
±[{0.09 × ( f – 10)}% of reading] |
