Protection & Coordination / Selectivity Analysis

Overview

ETAP Star™ overcurrent device protection and coordination evaluation software provides an intuitive and logical approach to Time-Current Characteristic curve selectivity analysis. ETAP Star offers insight into troubleshooting false trips, relay mis-operation, and mis-coordination.

• Time-Current Characteristic (TCC) Curve
• Protective Device Coordination & Selectivity
• Sequence-of-Operation
• Protection Zone Selection & Viewer
• Automated Protection & Coordination
• Zone Selective Interlock Scheme
• Protective Device Design Assessment
• Verified & Validated Protective Device Libraries

Protective Device Coordination Software Key Features

• AC & DC Overcurrent protective device coordination / selectivity
• Integrated database and embedded analysis capabilities
• Graphically adjustable device settings via TCC view
• Equipment damage curve plotting
• Sequence-of-operation fault analysis
• Zone Selective Interlock (ZSI) scheme simulation & evaluation
• Verified & Validated protective device library
• Enables coordination engineers to easily and efficiently perform an overcurrent protective device coordination study
• Provide an accurate and realistic operating characteristic, time including state of protective devices
• Offers insight into troubleshooting false trips, relay mis-operation, and mis-coordination
• Aids coordination engineers and planners to quickly realize possible design issues and make informed decisions

Capabilities

• AC & DC overcurrent device coordination analysis
• ANSI & IEC coordination & protection standards
• Relay & Breaker device coordination analysis
• Phase & Ground overcurrent coordination evaluation modes
• Graphically adjustable device settings & tools
• Comprehensive verified & validated protective device libraries
• One-line diagram integration
• Automatic detection of protection zones
• Protection & coordination zone viewer
• Automated rule-based design *
• Intelligent alert view for troubleshooting
• Detailed device setting reports
• Embedded short circuit analysis
• Virtual animation of sequence-of-operation playback
• Multi-axis time current curves
• Adjustable magnifying-glass zoom view
• Minimum Time Area (to evaluate coordination above established thresholds) 
• Time difference calculator
• Relay Settings Groups - Up to six settings groups with labels
• Modeling of multi-function & multi-level relays
• Embedded motor acceleration analysis
• Normalized plots shifted based on fault contributions
• Find Min Time Difference in Normalized View 
• Flexible user-definable display & plot options
• Extensive equipment damage curve modeling & plotting
• Generator decrement curve
• Motor Line & Terminal acceleration curve  
• Distribution panel circuit breaker & fuse plotting
• Professional time-current characteristic plots
• Comprehensive device settings reports with filtering & sorting options
• Visible/Invisible Curves from right-click menu  * Requires the addition of Star Auto-Evaluation module

Device Settings Report

ETAP Star Device Settings Report Manager provides comprehensive and customizable device setting reports in Crystal Reports® format or Microsoft Excel® format. The report manager allows you to preview and print the protective device setting in different formats including the PDF. The Excel Device Settings Report provides tabular format with advanced reporting capabilities

• Comparison of revision data such as existing versus suggested settings
• Sorting and filtering options such as device settings report based on substation / bus IDs.

Plot Options

ETAP Star Protective Device Coordination software provides a Plot Options tool with all the necessary options to customize the display of the Time Current Characteristic Curve. Using Plot Options, it is possible to customize the display of the current and time axes, legend, grid, curve plotting colors and properties, and more. By setting default Plot Options a custom layout can be created without having to repeat the process for each TCC Curve.