Note: CAD-Earth doesn't work on AutoCAD LT versions or the Mac platform.
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Note: CAD-Earth doesn't work on AutoCAD LT versions or the Mac platform.
Close Google Earth™ and any CAD product that may be running on your system.
Don't have Google Earth™? Install now.
After downloading, run the Executable File (.exe) and follow the screen instructions. Upon finishing the installation, restart your computer.
Open your CAD software. CAD-Earth should appear in the toolbar or ribbon. It will also show as a shortcut on your Windows desktop.
What are the limitations of the CAD-Earth demo version?
The CAD-Earth Demo Version has a limit of 500 points when importing a terrain mesh from Google Earth™. Only 10 objects can be imported to or exported to Google Earth™. Also, all images imported to or exported to Google Earth™ have ‘CAD-Earth Demo Version’ text watermark lines. The CAD-Earth Registered Version can process any number of points and objects and the images don’t have text watermark lines. Once purchased, the demo can be converted to a registered version applying an activation key.
What are the system requirements to use CAD-Earth?
CAD-Earth doesn’t need any additional requirements from the ones needed to run your CAD program optimally (please consult your documentation).
Currently, CAD-Earth works in Microsoft® Windows®10/11 64 bits and in the following CAD programs: AutoCAD® Full 2018-2026 (and vertical products i.e. Civil3D, Map, etc) and BricsCAD® V19-V21 Pro/Platinum.
CAD-Earth doesn't work on Mac, Revit or AutoCAD LT platforms.
What’s the difference between CAD-Earth Basic, Plus and Premium versions? With CAD-Earth Basic you can import and export images and objects to Google Earth™. With CAD-Earth Plus, you can additionally import terrain configurations from Google Earth™, draw contour lines, and create cross sections or profiles. CAD-Earth Plus also allows you to perform slope zone analysis, along with many other additional features. CAD-Earth Premium is the most complete option, allowing Basic and Plus commands along with 4D animation and advanced mesh options.
Engineers utilize IEC 949 calculations primarily during the design, auditing, and upgrading phases of electrical infrastructure.
IEC 949 is an international standard that provides specific formulas and methodologies to calculate the maximum current an electrical conductor can safely carry during a short circuit without exceeding its thermal limits.
I=k⋅S⋅1tcap I equals k center dot cap S center dot the square root of 1 over t end-fraction end-root : Permissible short-circuit current (Amperes) S : Cross-sectional area of the conductor (mm²) t : Duration of the short circuit (seconds) iec 949 pdf
In reality, heat begins to dissipate into surrounding materials the exact millisecond a short circuit starts. By calculating the heat absorbed by surrounding components (like cable insulation, sheaths, and metallic screens), IEC 949 allows for a more accurate, realistic calculation. This often reveals that a smaller, more cost-effective conductor size is perfectly safe for the system. Core Mathematical Framework of IEC 949
. It provides a methodology for engineers to determine how much electrical current a cable can safely withstand during a short-circuit without suffering permanent thermal damage. Core Methodology: Adiabatic vs. Non-Adiabatic Engineers utilize IEC 949 calculations primarily during the
) is the base calculation in this standard. It assumes all heat generated by the fault is retained within the conductor. The formula used is:
The International Electrotechnical Commission (IEC) is a global organization that develops and publishes standards for electrical and electronic technologies. One of the widely recognized standards in the industry is IEC 949, which deals with the safety and performance requirements for electrical equipment used in medical and scientific applications. In this article, we will provide a detailed overview of IEC 949 PDF, its significance, and the key aspects of the standard. By calculating the heat absorbed by surrounding components
The physical dimensions (cross-sectional area) of the conductor. Why Engineers Download the IEC 949 PDF
The document outlines practical examples for single-core and multi-core cables, demonstrating how to apply the correction factors to armor, screens, and structural fillers. Industrial Applications
Electrical engineers must design systems that survive sudden, massive spikes in electrical current. When a short circuit occurs, cables and conductors heat up instantly. If they get too hot, insulation melts, equipment fails, and fires start.
IEC 60949 outlines methods for calculating thermally permissible short-circuit currents in cables, featuring specific thermal constants for impregnated paper insulation. The standard provides formulas for determining current ratings based on material properties, including thermal resistivity and volumetric specific heat for paper-insulated components. View the document at Scribd . Combined IEC 949 | PDF - Scribd
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