"Power quality measurement is still a relatively new field. Many parameters are open to interpretation, so manufacturers have developed unique algorithms and measurement methodologies that could result in wide range of variation between instruments," said Frank Healy, Power Quality product marketing manager, of Fluke Corporation. "This means that technicians could spend significant time understanding instrument capabilities before they can begin actually measuring and analyzing the quality of the power itself. Knowing that an instrument meets the requirements for IEC 61000-4-30 Class A performance means that a user can move forward quickly and with confidence to the task at hand."
IEC 61000-4-30 standard defines measurement methods for 50 Hz and 60 Hz power quality instruments in two classes of performance. Class A requirements are more stringent than Class B requirements, and ensure that any two instruments meeting Class A performance will, when connected to the same signal, produce the same results. The standard is designed to define accuracy, bandwidth and a minimum set of power quality parameters to ensure that compliant instruments obtain reliable, repeatable and comparable results. Class A requirements standardize measurement parameters for:
The Fluke 1760 Three-Phase Power Quality Recorder
Providing full compliance to the IEC 61000-4-30 Class-A standard, the Fluke 1760 is designed for advanced testing and analysis of utility and industrial power distribution systems in medium- and low-voltage networks. It gives users the flexibility to customize thresholds, algorithms and measurement selections for custom analysis and reporting. It provides comprehensive analysis of a broad range of parameters including rms values, flicker, voltage dips, voltage swells, voltage unbalance, current and voltage harmonics to the 50th order, interharmonics, THD, mains signaling, reactive power, transients, and power factor. It features GPS time synchronization, which enables users to correlate data precisely with specific events or data sets from multiple instruments, and can provide detail of even the shortest event with its 10 MHz, 6000 Vpk waveform capture. It has a 2 GB internal compact flash memory to enable detailed, simultaneous recording of several power parameters over long periods of time, and includes an internal battery that maintains power for up to 40 minutes in the event of a power supply failure or outage. Data can be transferred to a computer directly through an integrated Ethernet network, even while the instrument continues to record. The Fluke 1760 includes PQ Analyze software, which is designed for detailed power quality analysis and report generation.
For More Information
For more information on Fluke power quality products or to access the application note "What does Class A mean to me?", visit Fluke's Web site at www.fluke.com or contact Fluke Corporation, P.O. Box 9090, Everett, WA USA 98206-9090, call 800-44-FLUKE, or E-mail: firstname.lastname@example.org.
Fluke Corporation is the world leader in compact, professional electronic test tools. Fluke customers are technicians, engineers, electricians and metrologists who install, troubleshoot, and manage industrial electrical and electronic equipment; and calibration processes for quality control.