Fused Switch - Short Circuit Tab
Figure 1: Short Circuit Dialog Box (ANSI)
Figure 2: Short Circuit Dialog Box (IEC)
Option | Description |
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Ratings | |
The interrupting rating of the fused switch (ANSI). |
|
Breaking Capacity (kA) |
The breaking capacity of the fused switch (IEC). |
Test X/R ratio of the circuit. ANSI Standard test ratios might be different for the same fuse depending on the voltage level at which the fuse is applied. |
|
Testing Standard |
This comes directly from the device library and cannot be changed. |
Calculate |
Fills in computed values for the Test X/R and Fused Interrupting fields, based on the device library entry for Mfr, Type, Style, and the base kV. You can override these values by typing in different numbers. This button also causes the appropriate Testing Standard to be displayed for your information. Note: The short circuit rating of low voltage fuses is not returned from the device library look up if the applied voltage exceeds the fuse rated voltage. |
Data entered in this section is used to place tick marks representing short circuit values on the TCC plot. |
|
TCC Clipping |
You can clip the time current curve (TCC) for the breaker at the specified current in kA. Select <None> to avoid clipping of TCC.
|
Select the appropriate check boxes to display the tick mark on the TCC plot.
|
|
Default Phase SC Values |
The short circuit values entered in kA in these fields can be displayed for phase currents on TCC plots. |
More Information
- Fused Switch Data
- Database Dialog Box Toolbar
- Fused Switch - Connection Information
- Fused Switch - Specifications Tab
- Fused Switch - Switch Tab
- Fused Switch - Mtr O/L (Motor Overload) Tab
- Fused Switch - Harmonics Tab
- Fused Switch - Stability Tab
- Fused Switch - Reliability Tab
- Fused Switch - Comments Tab
- Fused Switch - Hyperlinks Tab
- Fused Switch - Collected Data Tab
- Fused Switch - Media Gallery Tab