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3.6.
Output Voltage Ranges
The AC power source has two standard output voltage ranges 0-135V and 0-270V. The
operator may switch from one range to the other at will with no special precautions except to
remember that the output voltage will go to zero voltage whenever a range change takes
place.
Note:
The output changes to the other socket on front panel with a range change.
3.7.
Functional Test
CAUTION:
present on the input and output during this test.
Refer to Figure 3-3 for the test set up.
1. Connect an oscilloscope, voltmeter and/or distortion analyzer to the AC source output at
the 135 Volt output terminal.
2. Connect the AC power input voltage connections to the AC source input terminals. Turn
on the power switch located at the rear panel.
3. Verify that the front panel LED SEGMENT display reads out the initial start up voltage
and frequency.
4. Select the low voltage range. Set the frequency to 60 Hz with the right shuttle. Select the
current function with the Frequency/Current selector. Set the current limit to the
maximum value using the right shuttle. Set the output voltage to 135V with the left
shuttle.
5. Enable the output by pressing the output "on/off" button in the top right of the front panel.
The green LED above the button will illuminate when the output is on. The output should
be a clean 135 volt AC sinewave having less than 1% distortion.
6. Apply full load (refer to table on Figure 3-3) to the output of the source and verify the
output remains within 2% of the initial 135 volt value. The output should still be clean
and the distortion should still be less than 1% at 60 Hz.
7. Using the right shuttle set the output current limit value to 6 amps. The system should go
into current limit and give an error message on the display (err. -300) that indicates an
output fault condition and the output will go off. Return the current value to the maximum
current and disconnect the load.
8. Repeat steps 4 through 7 but set the output for the following: Hi voltage range and the
current limit to maximum value. The output load should be connected to the Hi range
output connector. The load value is shown in Figure 3-3, for the 270 volt output.
Note:
Output connectors must be changed when changing voltage ranges unless
the rear panel output terminals are used.
10
Work carefully when performing these tests - hazardous voltages are
March 2011
RP Series
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