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This tutorial will cover the simple practice of stringing fixed-tilt frames.

General stringing workflow

1. Open the Electrical design window.

2. Choose the Stringing method.

  • Single row stringing -  strings module rows in continuous strings.
  • U stringing - strings frames in U shaped strings.
  • Custom stringing - strings frames based on a custom drawn preset. 

3. Select the string direction - later used for the starting and ending points of string DC cabling.

4. Click on String PV area to string an entire area or String frames for separate frame stringing. If you choose to string a PV area - click on the polyline of that area. In the case of Frames - do a mass selection of frames that need to be strung.

After the stringing is done you will see that there are positive and negative signs & indicative strings created. All of these elements are later used for electrical devices, color coding & cabling. 

🛈 Copying, moving or any type of manual manipulation of strings will render them unusable in later stages of electrical design.

Custom stringing

Custom stringing is the recommended method as it allows for full customization of a stringing pattern.

After selecting the Custom stringing option click on the Select frames button and select the frames that you want to draw up the strings for.

These frames will appear on the stringing window. 

🛈 You can select more than one frame and even frames on different rows.

The stringing template window:

The selected frames are represented in the string drawing window. This window's size can be adjusted:

  • Expand or decrease the size by dragging the corner of the window.
  • Zoom in our out using the middle mouse button. 
  • Pan the view by holding down the middle mouse button.

How to draw/delete strings:

  • In order to start drawing a string we must first toggle the mode for drawing by clicking on the Mode: draw button. 
  • To start drawing a string you left-click on the first module of the string - this will be represented with the plus sign. 
  • To finish drawing a string you left-click again on the last module of that string - that will create a minus sign and you can then click on any other free module and start drawing another string.
  • String deleting works in the same way - toggle the delete mode and click on drawn strings. You can also use the Delete all strings button for a quick reset.

String PV area / frames.

  • The next step after you have your custom stringing template is to use the String PV area or the String frames to apply the template of stringing to your frames. 
  • String PV area - this approach automatically finds the identical frames in the identical position as you're template and applies the stringing to them.
  • String frames - this approach can be used to string only certain frames or for when the String PV area leaves out unstrung frames due to them not being identical to the template or being far away from each other. 
  • In the GIF above I've used String frames for the upper part of my PV area. After applying the template for these frames I'm going to use the String PV area string the rest of the area automatically. 

🛈 Strings are never placed over existing ones. To make modules available again for stringing you have to destring them using Destring frames.

Drawing leap-frog strings

  • In order to draw leap-frog strings you have to enable them by clicking the checkbox.
  • The approach to drawing leap-frog strings is just the same as the simple strings. The main difference is that when you end a leap-frog string and double click on the last module the ending point is placed besides the starting point (Plus and minus sign next to each other).

🛈  In some irregular areas String PV area might not work as one would expect due to limitations of the algorithm. To override these limitations simply use the String frames button.

To continue to electrical device placement, click button below:

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