User Manual California Instruments
CSW Series 37
See Table 3-1 for cable sizing.
NOTE
After the power source system has been configured for the 1-phase mode of operation the
Phase B and C outputs must be reconfigured as shown in Figure 3-7 for the 3-phase mode.
When the multi-source system is powered up the order of powering the Auxiliary power sources
and the Master power source is not important. After the system is powered up if an Auxiliary
power source is powered down there will be an error message displayed on the Master source,
“Auxiliary Down”. If power is reapplied to the Auxiliary power source the message will disappear
and normal the operation can continue. If the System Interface cable is removed from the
Auxiliary power source while the source is powered down the error message will disappear but
the Master power source will not have the correct configuration. The Master must have the input
circuit breaker toggled from Off to On for the correct configuration.
3.8 Output Voltage Ranges
The CSW Series power sources have two AC or DC voltage ranges (156Vrms and 312Vrms)
The maximum available load current is a function of the selected voltage range (high or low).
3.9 Functional Test
CAUTION: Work carefully when performing these tests, hazardous voltages
are present on the input and output during this test.
Refer to Figure 3-4 and 3.5 for the test set up. Connect the 3-phase line input to the indicated
rear panel terminal block. For the 380 to 415 VAC line input the Line Input Neutral must be
connected. The Neutral connection is not used for the 208 to 240 VAC line input.
1. Connect an oscilloscope, voltmeter and/or distortion analyzer to the AC source output at the
output terminal block (TB2).
2. With the AC mains verified as being off, apply the correct three phase AC power input
voltage connections to the AC source input terminals barrier (TB1). Apply the AC mains
power and turn on the main circuit breaker on the AC source front panel.
3. Verify the front panel LCD display lights up with the initial start up screen showing the unit ID
and serial number. A self check routine screen with follow and finally the system will display
the main “Menu 1” screen with the cursor highlighting the “Program” selection.
4. Press “ENTER” and the unit will display the Program selection screen. Set the following
output parameters: output voltage = 115 volts, frequency = 60 Hz, voltage range = 156 volts,
and current limit = 16.0 amps. Press “ENTER”.
5. Enable the output by pressing the output “on/off” button below the front panel display
screen. The green LED next to the button will light green when the output is on. The output
should be a clean 115 volt AC sinewave having less than 1% distortion.
6. Apply full load to the output of the source and verify the output remains within 2% of the
initial 115 volt value. The output should still be clean and the distortion should still be less
than 1% at 60 Hz.
7. Program the power source to the Constant Current mode by first pressing the MENU key
several times to select UTILITY 1. Then select VOLT/CURR CONTROL and then OL
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