Defaut Characteristics (ASEA XAP-A)
Entering from an External File
The arrestor I-V characteristic data can be supplied to the model by the following means:
Use the defaut characteristics (ASEA XAP-A)
Enter the data directly using the arrestor input parameters
Enter the data through an external data file
To use the arrestor default characteristics, ensure that is I-V Characteristic | Default is selected. The default characteristics approximate the ASEA XAP-A metal oxide surge arrester. The ASEA XAP-A characteristics are given below for reference:
I |
V |
0.001 |
1.100 |
0.01 |
1.600 |
0.1 |
1.700 |
0.2 |
1.739 |
0.38 |
1.777 |
0.65 |
1.815 |
1.11 |
1.853 |
1.50 |
1.881 |
2.00 |
1.910 |
2.80 |
1.948 |
200.0 |
3.200 |
Note that the voltage is in per unit, and so the Arrester Voltage Rating input parameter should be the rated voltage in kV.
If entering the I-V coordinates from an external data file, a certain structured format must be followed. Descriptive comments cannot be used. The last data point must be followed by a '/'. A maximum of 100 data points is allowed. Also, an 'ENDFILE:' statement must be placed at the end of the file.
An example data file is given below:
0.001 1.1 0.01 1.6 0.1 1.7 / ENDFILE: |