Procedure for Converting Autocad Earth Drag to Etap

7/22/2019 Procedure for Converting Autocad Earth Drag to Etap

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Import of a Ground Grid in AutoCAD to ETAP

Steps Involved

Requirements of AutoCAD drawing

Creatin the ETAP XML File

Importing the ETAP XML File into an ETAP Project

Example

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Ground Grid inAutoCAD Drawing

entitles representingconductors and rod

.

.XML file with

conductor and

Import .XML

File into ETAP

ro oca on andimensions

NEW ETAP Ground

r n resentat onin FEM mode

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Modification is required to map earthing layout in AutoCADdrawing with ETAP compatible elements.

Earth mat conductors shall be Lines. Locations of rods (Earth Pit) shall be Circle. Rods shall be located at exact locations which ma be

shown at the side of conductors as a normal practice)

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AutoCAD Entity ETAP Ground Grid ElementLine One conductor

Polyline One or more conductorsPolygon 3-1024 conductors

Rectang e 4 con uctors

Revision Cloud One or more conductors

Circle One rod

Ellipse One rod

Ellipse Arc One rod

Blocks oc s w e exp o e an ro en own ntoone or more AutoCAD entity types listed above.

Other than above Disregard

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AutoCAD drawing shall be made in different layers

Earthing Layout shall be made in three separate layers

Layer-1 is for Locations of Conductors (Earthing Mat)

ayer- s or ocat ons o s art t

Layer-3 is for risers and conductor earth connections (which may

Lock all the layers except Layer-1 and Layer-2 (locations of

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Change the scale of AutoCAD file to match with ETAP

The following table shows length mapping of AutoCAD unit toETAP unit

AutoCADLength Selected Unit to CreateXML File ETAP length

1 mm Centimeters 1 centimeter

1 mm Inches 1 inch

1 mm Feet 1 feet

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Example of Scaling:

1

1. Change the AutoCAD drawing file to

2. Select unit as meters while creating XML file.1000

Example Calculation (when meter is selected for creation XML file)1. A length of 300mm shall be scaled to 0.3mm in

AutoCAD file

. . mm n uto e s ta en as . meter .e.300mm) in ETAP

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Open the drawing file having the Ground Grid

ETAP Tools> ExportGround Grid

Click ok to selectConductors and Rods

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Select the Ground Grid from AutoCAD .DWG) FileThen press Enter

S l t F ll ielect Following> Conductor Type> Rod Type> AutoCAD DrawingU i **nit**

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Open a New ETAP Project

Drop a ground gridelement on the ETAP- OLD

Double-Click on The Element

Select Finite Element Method FEM)Note: IEEE Method study model does not support import of ground grids

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Note: IEEE Method study model does not support import of ground grids


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File >ile >Import From XML File

Browse and SelectETAP_GGS.XML file

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AutoCAD .XML file Loaded into ETAP is as shown

Note: Check for X Y Z co ordinates of all conductors and rods07-Jan-11ICHTNER 15

Note: Check for X, Y, Z co-ordinates of all conductors and rods

Procedure for Converting Autocad Earth Drag to Etap

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