New features enrich power-analyser capability

April 26, 2007
Voltage fluctuation and flicker plus cycle-by-cycle options add an extra dimension to the Yokogawa WT3000 3-phase power analyser. With this functionality, the WT3000 complies with the IEC6100-3-3 standard. The instrument can be used

Voltage fluctuation and flicker plus cycle-by-cycle options add an extra dimension to the Yokogawa WT3000 3-phase power analyser. With this functionality, the WT3000 complies with the IEC6100-3-3 standard.

The instrument can be used to carry out normal flicker measurement— it calculates all the values of the relative steady-state voltage change (dc), the maximum relative voltage change (dmax), the period during which the relative voltage change exceeds the threshold level (d(t)), the shortterm flicker value (Pst), and the long-term flicker value (Plt). It then compares them to preset limits, and provides a “pass/fail” judgement.

It can also be used to measure dmax caused by manual switching. It does so by measuring dmax, which means manually turning the EUT switch on and off. Then the average over 24 measurements is determined, and that is compared and judged against the limit.

Other measurable parameters include instantaneous flicker sensation (IFS) and cumulative probability function. Measurements of voltage fluctuation and flicker, along with harmonic current measurement (compliant with IEC61000-3-2 rev.2.2), are essential to test compliance with the latest European standards.

The WT3000 allows these standards tests to be performed on single-phase or 3-phase equipment, and will determine whether the results fall within the specified limit values. The cycle-by-cycle function takes measurements of parameters such as voltage, current, and active power for each cycle, and then lists the data on screen in a time series.

This function is intended for use in situations where the measurement data exhibits significant fluctuations. A typical application is motor evaluation, where rapid load fluctuations can occur. The new function takes measurements of parameters like voltage, current, and active power for each cycle, and then lists the data on-screen in a time series. Up to 3000 measurements of signals from 0.1Hz to 1kHz can be saved in CSV format.

Sponsored Recommendations

Board-Mount DC/DC Converters in Medical Applications

March 27, 2024
AC/DC or board-mount DC/DC converters provide power for medical devices. This article explains why isolation might be needed and which safety standards apply.

Use Rugged Multiband Antennas to Solve the Mobile Connectivity Challenge

March 27, 2024
Selecting and using antennas for mobile applications requires attention to electrical, mechanical, and environmental characteristics: TE modules can help.

Out-of-the-box Cellular and Wi-Fi connectivity with AWS IoT ExpressLink

March 27, 2024
This demo shows how to enroll LTE-M and Wi-Fi evaluation boards with AWS IoT Core, set up a Connected Health Solution as well as AWS AT commands and AWS IoT ExpressLink security...

How to Quickly Leverage Bluetooth AoA and AoD for Indoor Logistics Tracking

March 27, 2024
Real-time asset tracking is an important aspect of Industry 4.0. Various technologies are available for deploying Real-Time Location.

Comments

To join the conversation, and become an exclusive member of Electronic Design, create an account today!