Improved Configuration of Current Transformers with Mechanical Feedthrough

A plug-in or bar current transformer is a special device which serves to measure the primary current in a conductor without cutting through the conductor. A connection runs through such a device without a connection point of the device being connected to this connection. The connection point logic has now been extended so that such devices can be configured better in EPLAN in the future. The connections running through the current transformers are now also taken into consideration better during the connection routing process.

Benefit:

The improved configuration for current transformers with mechanical feedthrough reduces manual configuration steps and saves valuable time.
The new properties and the extended connection point logic allow more detailed documentation, which is of great benefit for maintenance, repair and extension of the plants.
The new check runs support you in minimizing errors and ensuring quality. Configuration problems are thus recognized and eliminated at an early stage. This leads to more cost-effective planning processes.
Overall, these improvements result in more precise and efficient electrical planning.

Extended connection point logic

To this purpose the new option "Mechanical feedthrough" is now available in the dialog Connection point logic for the property Connection point type. The connection is routed through the device with two connection points of this connection point type in the connection point logic. To this purpose a connection point with the same connection point type must be entered in the Transfer potential to property for a connection point with this connection point type. The Number of targets property must be "1".

The new function definition "Current transformer, inductive" is now available exactly for this connection point logic so that you do not have to set the listed conditions manually at each affected device.

EPLAN makes three new symbols for current transformers with mechanical feedthrough available in the master data (LSW1C , LSW2C , LSW3C), for which the new function definition is set to the same value. The symbols for current transformers already inserted in the projects (LSW1A, LSW2A, LSW3A, LSW1B, LSW2B, LSW3B) with the previously used function definition are not adapted automatically by EPLAN. If necessary, you can replace these with the new symbols.

You can use the check run 007035 from the message class 007 "Devices" to review the settings in the connection point logic for mechanical feedthroughs. This check run reports connection points with the connection point type "Mechanical feedthrough" that do not have a valid counterpiece or whose number of targets is not "1".

Connection properties

The following two new properties have been added to identify connections that run through a mechanical feedthrough.

Routed mechanical feedthroughs (ID 31164)
Mechanical feedthroughs available (ID 31165)

These properties can be used as columns in the connections navigator, for output in reports, for filtering, etc. The output information is intended for users who wire an enclosure on the basis of a wiring list and do not use EPLAN Smart Wiring.

Routing of routing connections

When routing routing connections in the layout space, connections that pass through items with a mechanical feedthrough now receive special treatment. Routing paths are generated for these items that have the same designation as the item through which the connection is routed. In such a case the DT of the item with the feedthrough is also listed in addition to the other routing paths (for example for cable ducts) in the property Layout space: Routing track. This information is required by EPLAN Smart Wiring.

The two properties Routed mechanical feedthroughs (ID 31164) and Mechanical feedthroughs available (ID 31165) also exist at 3D connections and are filled with values.

During the routing of connections for items with mechanical feedthrough, various problems can occur which mean that the connections cannot be routed. The following new check runs are available in the message class 026 "3D mounting layout" to eliminate these problems:

The new check run 026108 checks whether a suitable connection point pattern exists for an item with mechanical feedthrough.
The new check run 026109 checks whether an associated 3D part placement exists in the layout space for a multi-line item with mechanical feedthrough in the schematic.
The new check run 026110 determines that no entry point into the routing path network was found for a specific connection point of the mechanical feedthrough.

In such a case - connections not routed - the existing message 026043 is output in addition to the messages listed above ("No routing track between source and target found"). For items with a mechanical feedthrough, this message has been extended with an additional mechanical feedthrough.