California Instruments FCS Series II, User Manual

Page: 43 / 210

User Manual – Rev B FCS Series II
load test and that the load use
source. For three phase configurations, this d does not exceed the maximum power rating of the AC
test can be performed on one phase at a time if
circuit breaker on the front panel.
t
There should be little or no output although the D
the DMM is in auto ranging mode.
6. Select the
Set
screen and use the numeric keypad or shuttle to program a small voltage (20
VAC). Observe the DMM reading. The reading should track the programmed voltage.
7. Also monitor the scope. The output should be a low distortion sinusoidal voltage waveform.
8. If the output tracks, increase the voltage till you reach 80 % of the voltage range or more.
Check the output voltage reading and waveform.
9. Select the measurement screen by pressing the
Meas
button. The output voltage, current
and power will be displayed. For three phase configurations, use the PHASE button to
select individual phase data. If all phases are loaded equally, the same current and power
should be visible for all three unless the voltages are not programmed to the same level. If
only one phase is loaded, current and power will only be shown for the loaded phase.
In the unlikely event the power source does not pass the functional test, refer to the calibration
procedure in Section 6 or call California Instrument’s customer satisfaction department for
further assistance.
needed.
3. Connect an oscilloscope and DMM / voltmeter to the AC source output. Set both for AC
mode.
4. If the correct AC input voltage is present, turn on the FCS unit(s) by closing the On/Off
5. Se the output voltage to 0 volt and close the output relay with the OUTPUT ON/OFF button.
MM may show a noise level, especially if
Model 3 Phase Mode, 135 V range Model 1 Phase Mode, 135 V range
FCS18-3 3.1 Ohm FCS18-1 1.1 Ohm
FCS36-3 1.6 Ohm FCS18-1 0.5 Ohm
FCS54-3 1.1 Ohm FCS18-1 0.34 Ohhm
Table 3-13: Full Load Resistance.
California Instruments 43