FLUKE WE-20 True Three Phase Automated Tester/ Analyzer

Portable Tester/ Analyzer delivers three-phase field-testing using a RD-30 internal standard complimented by a sophisticated, lightweight package. The WE-20 allows you to execute a multitude of tests at the customer’ s site. Test the meter with the customer’ s load, perform CT burden and ratio tests, and verify system wiring to give you the peace of mind that the entire metering installation is correct. Harmonic Analysis, CT Testing, Vectors, and Trends can all be tested without pulling the meter from its socket.

The intuitive touch screen interface allows you to easily access the WE-20’ s feature-rich software. User friendly screens lead you through installation, wiring checks, testing, and record keeping. Results are fully compatible with our industry specific WATT-Net™ data management software using an Ethernet connection. USB keyboard and mouse connections or an external computer make interfacing with the WE-20 even easier.

WE-20 SOFTWARE

The WE-20’ s user interface software was designed for both ease of use and functionality. Access the WE-20’ s features through large touch screen buttons. Enter test parameters directly through the touch screen. Alternatively you can operate the WE-20 with an optional keyboard and mouse, or external computer. Create and save a variety of test profiles for easy access from a drop down box at test time. Export data to Excel® spreadsheet software or user defined files. WE-20 test data is compatible with WATT-Net™ software, allowing you to edit data and generate reports.

The WE-20 runs on the Microsoft® Windows XP operating system that comes supplied with the unit. Store thousands of test and test setup programs with the internal storage system.

SITE ANALYZER FUNCTIONS

Site analysis is performed by auto-sequence testing and test profiles. The WE-20’ s wiring check feature allows you to detect the service ( single-phase, WYE, Delta) , display the voltage and current for all three phases in an easy to read vector diagram and alerts you to any possible wiring errors. Metric analysis allows you to view primary and secondary metric information ( both instantaneous and averages) for volts, amps, phase, power factor, delta phase, frequency, watts, VARS, and VA. Trend analysis allows you to track and graph metric information over time for all three phases. Waveform analysis gives you the ability to view voltage and current waveform graphs for all three phases.

With an optional standard upgrade you can add harmonic analysis to the WE-20, allowing you to extend metric analysis to include metric information for both voltage and current THD. Upgrading to harmonics allows you to display harmonic data ( both RMS and % of fundamental) for all three phases up to the 60th harmonic as well as view harmonic data as a bar graph or raw numbers.

All site analyzer data can be saved and recalled for later use. Data can also be exported to a number of different formats including Excel® spreadsheet software.

TRUE THREE-PHASE REFERENCE STANDARD

Accuracy of meter test results is assured because the WE-20 incorporates a three-phase ref­ erence standard that is both powerful and easy to test for certification. Choose either the RD-30, RD-31, or RD-33 three-phase reference standard. Accuracy verification of the standard can automatically be performed using the WE-20’ s standards compare routine. This allows for easy comparison to an external master standard without removing the standard under test from the unit.

CUSTOMER LOAD TESTING

Clamp-on current probes and flexible current probes are optionally available to perform a three-phase test of the meter using customer load. The WE-20 system assures that a true meter accuracy test is being performed. All of the necessary meter pulse sensors and pickups are also optionally available.

CONTROLLED TESTING

The WE-20 comes with an electronic current source and an electronic voltage source for a controlled parameter test of the meter. In addition, the WE-20 allows the user to create harmonic waveforms independently, per phase or per source on the voltage and current, thus allowing for a pure sinusoidal waveform test and a distorted waveform test. Whether sinusoidal or distorted, both types of tests are solely under your control and the test parameters can be repeated in the field or back at the meter shop. With the WE-20, the meter can be completely tested and analyzed for a wide range of repeatable test conditions.

MEASUREMENT FUNCTIONS

The WE-20 provides four quadrant, three-phase, simultaneous measurements for active, reactive and apparent energy standard. Measurement functions include: watthours, volts, amps, phase angle, power factor, VARhours, Qhours, watts, VAhours, VA, VARs, frequency, forward and reverse energy flow. An available option adds Vhr, Ahr, V2hr, A2hr and average responding VA, volts, Vhrs, amps and Ahrs measurement functions.