User manual

User Manual Compliance Test System 3.0
Field / Control Location Description
Report button Upper left
corner
The Print Summary button generates a test report in an MS Word doc
file. This report contains both the voltage and current waveform and the
harmonics display graph. It also includes the current and voltage
harmonics in absolute values and as a percentage of the applied IEC
limits.
Power
Buttons
Upper left
corner
These button controls may be used to turn the AC power source output
on or off. The configuration can be set to use automatic power on/off,
automatic on / manual off or manual on and off control of the AC
source. If no AC source control option is selected, the operator has to
use the front panel of the AC source instead and this button will not be
available. In manual mode, the operator must click on the Power On
button to turn on power to the EUT.
WINDOW DATA
The data in the Window Data frame on the left side of the main
harmonics screen applies to successive acquisition buffers. Acquisition
buffers are 320 ms for 50 Hz EUT’s and 266.67 ms for 60 Hz EUT’s if
the 16 Cycle window size is selected. If the 10/12 cycle window size is
selected, the buffer size is 200 msec.
Frequency - Hz Left panel Displays the AC signal frequency in Hz. If the frequency is not 50 or 60
HZ, “F???” will appear in the field of VTHD and Source Qual. The test
will continue however but the results may not be valid.
Voltage - RMS Left panel Displays the Root Mean Square voltage of the AC source output for
each acquisition buffer.
Current - RMS Left panel Displays the Root Mean Square current to the EUT for each acquisition
window.
I peak Left panel Displays the peak current value of the EUT current. If the EUT
produces no harmonic currents, the peak current is √2 times the RMS
current.
I Fund Left panel Displays the value of the fundamental current of the EUT for each
acquisition window. The fundamental current is the current at 50 Hz or
60 Hz only, without any contributions from higher order harmonic
currents. If the EUT produces no harmonic currents, the fundamental
current will be the same as the rms current.
Crest Factor Left panel Displays the crest factor of the EUT current. Crest factor is the ratio
between the peak current and the RMS current.
VA Power Left panel Displays the apparent power consumption of the EUT for each
acquisition window.
Power - Watts Left panel Displays the real power consumption of the EUT for each acquisition
window.
Power Factor Left panel Displays the ratio between real power and VA power of the EUT for
each acquisition window.
Window Result Left panel Indicates if the present acquisition buffer current harmonics exceed the
selected EUT current limits. If one or more acquisition buffers report a
failure, the overall test result will fail. This field will typically toggle
between good and fail during the test run.
VTHD Left panel Indicates if the present acquisition buffer has a voltage distortion that
exceeds the IEC limit.
Test Number Bottom Left Each test run is assigned a sequential test number. The number for the
current test is displayed in this field. This allows individual test results
to be tracked.
Test Result Bottom Left This field provides a visual indication of the test result. A Green field
with Pass indicates the EUT current harmonics are below the limit, a
Red field with Fail indicates the EUT current harmonics are above the
limit. Note that the condition of this field is affected by the user selected
test mar
g
in. To use the actual IEC test limits
,
the test mar
g
in should be
California Instruments Revision N 79