Coordination Options

You can specify some features of TCC appearance using Coordination Options. When you are in Coordination focus, click PDC Options (Coordination Options) to open the dialog box.

Note: The Coordination Options are not available when the TCC plot window is open.

General

Figure 1: Coordination Options Dialog Box

TCC Defaults

Select the check boxes to control the TCC options.

Confirm when creating blank TCC: When you plot a TCC without selecting any equipment, a blank TCC is created. This check box controls whether a message is displayed when a blank TCC is being created.

Figure 2: Message Box for Blank TCC

Show Title Block on new TCCs: Show or hide the TCC title block while creating a new TCC. After the TCC is created, you can select to show or hide the title block using the Title Block check box in the ribbon.

Enable multiple TCC windows: When this option is selected, you can create multiple TCC windows. When this option is not selected, creating a new TCC closes the previously opened TCC window. Before closing the previously open TCC, you are asked if you want to store the TCC.

Synch TCC one-line colors to TCC curve colors: When this option is selected, the protective device symbols on the one-line window have the same color as the corresponding curves in the TCC window.

Show cable ampacity tick marks: When this option is selected, a tick mark is placed at the top of the TCC to indicate the ampacity of the cable.

Show selective CD table tick marks: When this option is selected, a tick mark is placed on the TCC at the amp value up to which a pair of protective devices (typically LV breakers) are selectively coordinated as per tables published by manufacturers.

Blank TCC Settings: Sets the default base voltage for calculating current on the new blank TCC.

Default One-line Box Position: Sets the location of the one-line box on the lower left or upper right corner of the TCC plot area when making a new TCC plot.

Default TCC Short Circuit Currents: The short circuit currents used in the TCC can be calculated from short circuit or user-specified.

• User Specified: You must enter the short circuit current in the Short Circuit tab of the device data dialog box or the temporary data dialog box of the protective device to use TCC clipping or to show the tick mark on the TCC plot.
• Calculated from SC: EasyPower calculates the maximum fault current that may pass through the protective device. The selection for TCC Short Circuit (SC) Currents can also be made in the TCC Options dialog box.

Sequence of Events

Sequence of Events Display: Select to either show the absolute trip times or the trip time difference from the next downstream device for a faulted bus on the one-line.

Create Sequence of Events Report: When selected, this creates the Sequence of Events report when a bus is faulted in the Coordination focus.

TCC Curve Styles

You can change the default format (color, lines, weight) of the curves that are plotted for various devices. To change the default color of any device, select that device in the Curve window of the dialog, and select Change for the order of the curve. The order of the curve, 1, 2, 3, etc., is the first, second, third, etc. curve plotted for the same type of device.

Figure 3: TCC Curves Style Tab of Coordination Options

Auto Coordination

The Auto Coordination options are described in Auto Coordination Options. This option is available if you have the SmartPDC™ (auto-coordination) feature.

More Information