ETAP - Cable Thermal Analysis Software
From Cable Systems
The Cable Thermal Analysis module helps engineers to design cable systems to operate to their maximum potential while providing a secure and reliable operation. The advanced graphical interface allows for design of cable raceway systems to meet the existing and future needs by using precise calculations to determine the required cable sizes, their physical capabilities, and maximum derated capacity / ampacity. In addition, transient temperature analysis computes temperature profiles for cable currents, reducing the risk of damage to cable systems under emergency conditions.
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Cable Thermal Analysis Key Features
- Cable Steady-State Temperature Calculation using:
- Neher-McGrath Method
- IEC 60287 Method
- Cable Transient Temperature Calculation
- Cable Ampacity Calculation using:
- Cable Sizing -Thermal Analysis
- Underground (UG) Cable Raceway Rule Book
Cable Thermal Analysis Capabilites
- Graphical user interface
- Graphical manipulation of raceways, cables, conduits, etc.
- Drag & drop cables from one-line diagrams
- Cables of different sizes in the same raceway
- Separate phases into different conduits or locations
- Unsymmetrical positioning of raceways
- Transient calculations use a dynamic thermal circuit model
- Option to fix cable size and/or loading
- Grounded/ungrounded shielding
- Calculate thermal R, dielectric losses, Yc, Ys, etc.
- User-defined armor cables
- Unbalanced load factors
- Multiple duct banks & direct-buried conduits
- Place raceways in multiple cross-sections
Flexible Operation
- Multiple raceways
- Multiple external heat sources
- Optimization of new cables in existing raceways
- Cross-sectional analysis
- Duct banks & direct buried raceways
- Integrated with cables in one-line diagrams
- Integrated with load flow results
- Integrated with cable pulling analysis
Plotting & Reporting
- Transient temperature calculations based on load profile
- Option to display multiple cables simultaneously
- Zoom to any detail level
- Export data to Microsoft Excel
- Line, bar, 3-D, & scatter plots
- Customize text & axes
- Flag critical & marginal cable temperatures
- Reports all physical & calculated data
- Use Crystal Reports for full color, customizable reports
- Export output reports to your favorite word processor
- Graphical display of raceway results
The cable capacity / ampacity calculation and cable sizing are based on the NEC accepted Neher-McGrath method and IEC 60287 standard for steady-state temperature calculation. The transient temperature calculation is based on a dynamic thermal circuit model. All of these calculations can handle multi-raceway systems and consider the effect of heat generated by neighboring cables and external heat sources.
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