User Manual California Instruments
126 CSW Series
VOLT FREQ MAX
This test will set the voltage and frequency to levels defined by Table 9-2. The test will last for 30
minutes. The test will be repeated for the EURO standard using the Voltage setting from
Table 9-1 and the frequency from Table 9-2. The CLR Key in local operation will terminate the test
at any time. Group execute trigger will terminate the test remotely. The unselected phases will
remain at 115 volts. The key (backspace) will terminate the test at any time.
VOLT UNBALANCE
Standard/Group RTCA Group1 Group2 Group3
Voltage offset 6 6 6 9
Frequency 400 400 360/650 360/800
Table 8-3: Normal Voltage Unbalance
This test will change the output voltage for each phase from 115 volts to 115V + offset. Refer to
Table 8-3 for the offset value and the Frequency. The test will last 30 minutes. The test will be
repeated for a second Frequency if applicable. The test can be terminated at any time.
The key will terminate the test at any time.
WAVEFORM DISTORTION
This test will generate a 5% THD voltage distortion on the output voltage waveform. The
distortion is generated by using a clipped sine wave. The test will last for 30 minutes. The
key (backspace) will terminate the test at any time.
VOLTAGE MODULATION
This test requires a numeric value entry equal to the modulation rate in Hz. This entry value
must be between 1 Hz and 200 Hz. The amplitude modulation is calculated based on the
modulation rate as defined in Figure 8-4. This test will last for 2 minutes.
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