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Simulating an AC Power Line Disturbance with the 9801

Last Updated: Oct 16, 2015 10:06AM PDT
When testing electrical equipment that is powered from the AC line, it is often important to evaluate the equipment when it is exposed to over-voltage, under-voltage, or other network fault conditions such as surges, sags, and dropouts. A designer may also want to test beyond the normal AC line voltage variations for stress testing purposes.

​The 9801 programmable AC source can create these types of AC waveforms with its built-in power line disturbance simulator. The following are example list mode setups that can be used as a reference to simulate various power line disturbances.

Note: Step parameters configured in List mode. Initial program delay times not shown. Programmed PLDs generated in intervals of 100 ms. See 9801 User’s manual for additional details on setting up and running List mode programs.


Small 2 ms spike on 120 V, 60 Hz AC waveform

Voltage spike
 
Parameter Input
Step Count 1
List Repeat 1
Step 0 Voltage 120.0 V
Step 0 Frequency 60.0 Hz
Step 0 Slope 0.0 s
Dwell Units Second
Step 0 Dwell 1
SD State Enable
SD Continue Yes
SD Step 0 Voltage 160.0 V
SD Step 0 Site 1.5 ms
 SD Step 0 Time 2.0 ms
List Save Yes
Save data bank 1
 
 
 
 
Voltage surge on 220 V, 50 Hz AC waveform 
  
Voltage surge   
 
Parameter Input
Step Count 1
List Repeat 1
Step 0 Voltage 220.0 V
Step 0 Frequency 50.0 Hz
Step 0 Slope 0.0 s
Dwell Units Second
Step 0 Dwell 1
SD State Enable
SD Continue Yes
SD Step 0 Voltage 270.0 V
SD Step 0 Site 0 ms
 SD Step 0 Time 60.0 ms
List Save Yes
Save data bank 2
 

  
Dropout at 90⁰ on 100 V, 50 Hz AC waveform

 
Dropout
 
Parameter Input
Step Count 1
List Repeat 1
Step 0 Voltage 100.0 V
Step 0 Frequency 50.0 Hz
Step 0 Slope 0.0 s
Dwell Units Second
Step 0 Dwell 1
SD State Enable
SD Continue Yes
SD Step 0 Voltage 0.0 V
SD Step 0 Site 5.0 ms
SD Step 0 Time 20.0 ms
List Save Yes
Save data bank 3

 
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