This procedure explains how to create a new cable drum in the Electrical Index. In order to assign cables to cable drums in your plant, you must first create cable drums and associate them with a reference cable in your plant.
Prior to creating new drums, it is crucial that you define appropriate reference cables that contain drumming data. You need to define the drum types that you require. These drum types are based on various sets of minimum and maximum cable lengths. When associating a drum with a reference cable, these sets of cable lengths become available for drum optimization. For details, see Design Data Tab (Reference Cable Common Properties Dialog).
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In the Electrical Index, expand the folder hierarchy Wiring Equipment > Drums.
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Right-click the Drums folder, and on the shortcut menu select New Drum.
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Right-click the drum that you created, and on the shortcut menu select Common Properties.
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On the Cable Drum Common Properties dialog, under Drum Tag, edit the tag name as necessary.
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To set the required drum reference cable, beside Reference cable select
to open the Select Reference Cable dialog.
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On the Select Reference Cable dialog , select an appropriate reference cable. Make sure that there are appropriate plant cables based on the selected reference cable and that each of these cables has been assigned to at least one pulling area.
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In the Drum sizes group box choose Select to open the Drum types per cable length dialog.
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Select an appropriate set of cable lengths and then select OK.
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The sets of cable lengths that are available on the Drum Sizes dialog are taken from the Design Data tab of the reference cable that has been set for the current drum. The Minimum and Maximum values pertain to the Minimum cable length to order and Maximum drum capacity values that are on the Cable Drum Common Properties dialog.
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You can add new Minimum and Maximum values and change the existing Minimum and Maximum values even after assigning plant cables to a drum.
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Note that the drums that have the procurement status set to Ordered or Delivered are not affected by the change that you make.
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When changing the Minimum and Maximum values, the software validates that the new values that you enter are within the range of the cable length definitions according to the following:
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If the Total cable length to order/delivered has been set, the Minimum cable length to order cannot be greater than the Total cable length to order/delivered value.
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If the Total cable length to order/delivered has not been set, the Minimum cable length to order can be greater than the Total cable length on the drum value.
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Enter values for the other cable drum properties. For details, see Cable Drum Common Properties Dialog .
For calculation details, see Rules Governing Cable Drum Calculations.