AMETEK Ls Series - Manual (Page 131)

User Manual Lx / Ls Series
127
400Hz VFREQ 60 Hz
1 393 360 59 1 minute
2 407 800 61 1 minute
3 400 SSF 60 1 minute
Table 9-2: Steady state frequency
The key (backspace) will terminate the test at any time.
VOLT UNBALANCE
This test will change the output voltage for the selected phase only in the following sequence:
112V for 1 minute.
118V for 1 minute.
115V for 1 minute.
The test will be repeated on three phase systems to include all three phases if the coupling is set to all.
The key (backspace) will terminate the test at any time.
PHASE DIFFERENCE
This test applies to three phase systems only. The phase angle for the selected phase will
change relative to phase A in the following sequence:
If phase B is selected:
236 for 1 minute.
244 for 1 minute.
240 for 1 minute.
If phase C is selected:
116 for 1 minute.
124 for 1 minute.
120 for 1 minute
VOLTAGE MODULATION
This test will vary the output voltage by 2.5V rms over a period of one second. The test will last
for 2 minutes. The
key (backspace) will terminate the test at any time.
FREQUENCY MODULATION
REVISION D E F (400Hz /VFREQ) F (60HZ)
MODULATION 7Hz 4Hz 4Hz 0.5Hz
Table 9-3: Frequency Modulation
This test will vary the output frequency as defined by Table 9-3 over a period of one minute. The
test will last for 4 minutes. The
key (backspace) will terminate the test at any time.
WAVEFORM DISTORTION