DIMOD is a plug-in for Autodesk® Revit® that sizes each power electrical circuit according to the IEC standards and draws the single line diagram of each electrical panel.

The plugin associates 10 shared parameters to the category of electrical circuits:

1. sp_vdcalculated: (Number type) Percentage of voltage drop calculated.

2. sp_wiremin: (Number type) Minimum of wire size: 1.5 mm² to 6 mm².

3. sp_vddata: (Number type) Data percentage of voltage drop: 0.5 % to 6 %.

4. sp_kcable: (Number type) Derating k factor for the wire calculation.

5. sp_breaker: (Number type) Breaker rating: (Number type) Values in Amperes: 6, 10, 16, 20, 25, 32, 40, 50, 63, 80, 100, 125, 160, 200, 250, 400, 630, 800, 1000, 1250, 1600, 2000, 2500, 3200, 4000, 5000, 6300, 8000.

6. sp_kufactor: (Number type) Load utilization coefficient of the circuit.

7. sp_wire: (Text type) Wire calculated of the circuit.

8. sp_mounting: (Text type) Combines the following data:

Material of the wire: Cu-Coopper or Al-Aluminum.

• Type of insulation of the wire: PVC or XLP.
• Type of installation: A1, A2, B1, B2, C, D, E or F.

9. sp_currentallowable: (Number type) Allowable current of the conductor in Amperes.

10. sp_cond: (Text type) Diameter of the conduit in millimetres.

Calculations:

The add-in calculates the breaker rating, wire size and conduit size, all these based of all data such as type of conductor, installations.

The calculations of the wire size are based in first moment of the load and it is reviewed to voltage drop, currents coordination (Ib<=In<=Iz) and max value of length based to a curve C breaker.

The plug-in uses the currents conductors showed in the images.

The plug-in only works with the Power type created circuit.

When a circuit is created all the shared parameters are empty, when the Calculated button is activated the data and results will be filled.

Data:

1. Wiring: Material of the wire: Cu-Coopper or Al-Aluminium.

• Type of insulation of the wire: PVC or XLP.
• Type of installation: A1, A2, B1, B2, C, D, E or F.

2. Factor k of derating for the conductor's calculation.

3. Voltage drop data, 0.5 % to 6 %.

4. Minimum wire: This works for electrical circuits with light fixtures (1.5 mm² to 2.5 mm²) or without light fixtures (1.5 mm² to 6 mm²).

5. The ku factor of each circuit will be always initially 1, the user can change this manually.

6. Minimum breaker: 6A, 10A, 16A or 20A.

All data are saved with shared parameters associated of the add-in, except de minimum breaker, this last data is a global data that will be adjusted according to the existing value.

• Edit circuits: In the add-in window the user can select a panel in the list and the circuits will be showed in the table, all the changes will be made in that table.
• Single line diagram: The single line diagram only works in a view sheet type activated, the user must select the electrical panel, insert the factor of simultaneity and the press draw button.