Typical Application Scenarios

PF330A series is a multi-functional three-channel digital power meter with wide frequency range and high accuracy. It supports DC and 0.5Hz-100kHz broadband testing, and is equipped with 3 power measurement units supporting various wiring modes, so efficiency test can be completed with only a single instrument. It also has functions including harmonic analysis, transformation ratio, averaging, data storage/recall, and electrical energy integration. Equipped with dedicated software, it enables fast setting of measurement parameters, can display, store and recall measurement data, and display voltage and current waveforms as well as harmonic spectra. It is suitable for high-requirement applications such as scientific research institutions and universities, testing and calibration, enterprise R&D, and quality inspection.

Main Features

1. Maximum test voltage 1500V, direct measurement current 50A

PF330A-H enables 1500v/50A direct measurement, which meets the requirements of high-voltage and high-current test scenarios; it also supports 2.5mv~10v external current input range, making testing more convenient.

2. Automatic range function for integration measurement

Integration is the accumulation of active power (W) or current (A) over time to obtain energy consumption (Wh) or power consumption (Ah), which can be used to obtain the power consumption of household appliances under various operating conditions. PF330A series digital power meters can not only measure positive and negative watt-hour, but also measure ampere-hour and DC current, which is suitable for measurement of battery charging and discharging energy, elevator lifting energy consumption and storage, etc. Usually in integration mode, the measurement range needs to be fixed. Once the input voltage or current exceeds the maximum value of the selected range, measurement will fail, and re-test with a higher range is required. PF330A series digital power meters can automatically and quickly switch ranges in integration mode, ensuring the accuracy and continuity of measurement.

3. Wide frequency measurement range

PF330A series digital power meters have a frequency measurement range covering DC and 0.5~100kHz, and can accurately measure the RMS value of distorted waveforms such as square waves, pulse waves, or special waveforms with DC components. Through the average active power measurement function, it can accurately measure distorted waveforms without any special mode settings, providing accurate power consumption data for fluctuating power devices such as welding machines, HID power supplies, etc. When measuring sine waves, for example, when the input waveforms of products such as switching power supplies and inverter home appliances contain rich high-frequency harmonic components, if the measurement frequency range and bandwidth of the power meter are insufficient, high-frequency harmonic components cannot be tested. The PF330A series digital power meter can ensure accurate measurement of power and power factor when testing such products.

4. Efficiency measurement can be realized with a single instrument

PF330A series digital power meters have three measurement channels, enabling efficiency measurement with only one single instrument. Two of the channels use the "two-meter method" to measure the three-phase output signal of the inverter, and the third channel measures the DC input of the inverter.

Main Technical Specifications