10.1.4
Customer Load Test Results
Functionality:
Clears all data and restarts meter test
Views the voltage, current, and power (W, VA, VAR) data during the total
time interval for the meter test. See
Section 10.1.4.2.
Completes meter test and saves data
Description:
When entering this screen, the PowerMaster
®
begins the meter accuracy test. This screen
updates when every pulse is detected. By following the testing parameters set in the setup
screen (
Section 10.1
), the meter test stops when either time or pulses required is met. Meter
accuracy results are displayed at the top center of the screen. Other information during the test is
displayed in the bottom right and left sections of the screen. The voltage and current amplitude
along with energy is displayed using the System values (see
Section 8.3
). Also, the meter
accuracy calculation is based off the settings found in the Configuration menu (see
Section
13.9.2
).
FAQ’s:
What does Powermetrix consider to be a bad customer load meter test?
Powermetrix believes a good customer load meter test should be within ±2%. Most ct-rated
meters are classified at 0.2%, but that accuracy class is based off of lab conditions and under
artificial load points (120V @ 2.5 amps). With customer load, the load will vary between the
designated test points (FL, PF, LL), and the PowerMaster
®
helps the user determine how well the
meter performs under existing conditions (including harmonic content).
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