Zone Selective Interlock (ZSI)


Zone Selective Interlock - ZSI

Zone Selective Interlock (ZSI) Modeling & Evaluation

ZSI Scheme for Protective Device Evaluation & Arc Flash Mitigation Technique

Overview

Circuit Breaker Zone Selective Interlock (ZSI) capability in ETAP evaluates, verifies, and confirms the operation and selectivity of the ZSI scheme for various types of faults for Star Automated Protection & Coordination studies and Arc Flash analysis.

  • Improve Safety & Minimize Equipment Damage
  • Validate ZSI Mitigation Technique & Scenarios
  • Intuitive & Graphical Zone Selective Interlocking
  • Fast & Efficient Modeling of ZSI Settings

Zone Selective Interlock - ZSI

Key Features

  • Consideration of ZSI scheme for Arc Flash analysis & mitigation technique 
  • Simulation & verification of tripped ZSI element via Star SQOP
  • Evaluation of ZSI Scheme in Star-Auto Evaluation
  • Compliance with NEC 240.87
  • Evaluate & compare ZSI performance
  • Manufacturer specific ZSI schemes per device
  • Simulate ZSI operation for various fault types
  • Display of Restrained and Unrestrained TCC curves
  • Model any interlock wiring scheme
  • Fast & efficient modeling of CBs & zone based interlock wiring
  • ZSI Manager as a central location for modeling and verification of wiring
  • Graphical display of interlock types on one-line diagram

Capabilities

  • ZSI enforced or adjustable settings
  • ZSI logic modeling for Solid State Trip (SST) devices
  • Supports delay bands & thresholds
  • Phase & Ground zone interlock modeling
  • Short-Time, Instantaneous & Ground fault ZSI
  • Simplified user-defined modeling capability
  • V&V Library includes Manufacturer specific breakers with ZSI capabilities
  • Device settings report with ZSI settings in different formats
  • Comparison of ZSI device settings in Base and Revision data
  • Simulation comparison report with or without ZSI
  • Enable global ZSI feature via Study Case
  • Enable individual circuit breaker ZSI
  • Plot Restrained & Unrestrained TCC curves
  • Device settings report for adjustable ZSI elements
  • Star Auto-Evaluation graphical & tabular reports for ZSI what-if scenarios
  • ZSI Manager as central location for modeling, verification of wiring, and graphical display
ZSI SQOP Summary Report NarrowZSI Device Settings Report wComparison

ZSI Manager and Graphical Interlock Display

  • Central location for modeling and verification entered data
  • Available ZSI terminal display for phase and ground
  • Interlock connections data entry and graphical display on one-line
  • Intuitive and customized interlock theme
  • Multiple one-line diagram support
  • Visual verification and troubleshooting of interlock modeling
  • Tabular and graphical submittal for installation

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Testimonials

FAQs

    How to Visualize ZSI Schemes in ETAP: Enhancing Safety and Arc Flash Mitigation Techniques

    How to Visualize ZSI Schemes in ETAP: Enhancing Safety and Arc Flash Mitigation Techniques

    Discover how this powerful simulation tool evaluates, verifies, and confirms the operation and selectivity of the ZSI scheme for different types of faults. The ZSI capabilities empower engineers and professionals like you to take control of electrical power system protection and analysis, enhance safety, minimize equipment damage, and validate arc flash mitigation techniques and scenarios.

    Play 23:17
    ZSI Scheme for Protective Device Evaluation & Arc Flash Mitigation Technique using ETAP

    ZSI Scheme for Protective Device Evaluation & Arc Flash Mitigation Technique using ETAP

    ZSI (Zone Selective Interlock) Scheme has been developed about 40 years ago and since then, the application has expanded from Protection to Arc Flash Hazard Mitigation and even Coordination or Selectivity.

    Play 42:28

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