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Arc Flash Evaluation Module
Updated for 2019!
New for 2019
Module now uses the calculation methods derived from the following standards:
  • IEEE 1584 (2018 and 2002 editions)
  • NFPA 70E 2018 (CSA Z462 2018)
  • NESC 2017 Edition
Available in PTW version onwards.  
Arc fault on an overhead line
PTW Arc Flash Evaluation calculates the incident energy and arc flash boundary for each location in a power system. Arc Flash Evaluation saves time by automatically determining trip times from the protective device settings and arcing fault current values. Incident energy and arc flash boundaries are calculated following the NFPA 70E and IEEE 1584 standards. Clothing requirements are specified from a user-defined clothing library. Clearing times can be automatically reduced based on current-limiting capabilities.

A downloadable version of the Arc Flash Evaluation brochure is available in PDF format via a link at the bottom of this page. 

Worried about arc clearance times?  Consider CEE's range of protection relays with built-in arc detectors.  Alternatively if you need a powerful modular arc detection system, the AP900 range is the perfect solution

Some of the features of the Arc Flash Evaluation module are available as a standalone program; "Arc Calc".  For a comparison between the two programs, click here
  • Design safer power systems while applying the NEC 110.16, OSHA, NFPA 70E, IEEE 1584 and NESC standards or requirements. 
  • Save time with the fully integrated Short Circuit, Over-Current Coordination, Equipment Evaluation and Arc Flash Evaluation modules working together with libraries of clothing levels, protective devices and bus ratings. 
  • Provide a safer working environment by specifying the proper level of clothing. Wearing inadequate clothing is dangerous for obvious reasons, but wearing too much clothing is dangerous due to limited mobility and visibility. 
  • Evaluate alternatives quickly and easily to establish an optimal design. 
  • Improve safety margins with user-definable arcing fault tolerances. 
  • Save time by automatically generating arc flash labels and work permits. 
  • Avoid potential fines, lost productivity, and increased insurance and litigation costs.
Interface Options
  • Simple to use tabular interface for system design, PPE selection, and reviewing study results. 
  • Summary and detail view enables complete bus by bus examination of study data. 
  • Pre-populated library of protective clothing allows user-defined PPE additions. 
  • Bus and branch arcing fault values are automatically calculated and trip times are automatically determined from the protective device settings. 
  • Arc Flash labels are automatically produced to comply with NEC 110.16 labeling requirements and can be printed to several standard size label sheets. 
  • Create custom labels in any size with user-defined logos, text, comments, field placement, and local language support. 
  • Report selected bus locations using custom queries or go-to function. 
  • Full featured reporting including bus report, line-side report, and load-side report.
(Above): Create warning labels automatically based on PTW calculations. Customise your design and apply it to any of your PTW projects. 
Study Options
  • Option to follow the NFPA 70E, IEEE 1584 or NESC standards. 
  • Option to perform DC Arc Flash analysis. (DC Systems study module required) 
  • Option to report in English or Metric units. 
  • Fuses and breakers may be modeled as current limiting devices with user-defined equations. 
  • Allows representation of differential, zone-interlocking, photo-sensing, and other special instantaneous protection schemes. 
  • Induction motors can be included; excluded; or included for a user-defined time. 
  • Automatically accumulates energy from parallel contributions that clear at different times. 
  • Compare results from multiple project scenarios in a single table. 
  • Option to check upstream protective devices for mis-coordination.
(Above and Right): Arcing currents and other information calculated by the Arc Flash Evaluation module can be presented in tables, added to single-line diagrams or TCCs. This information is updated automatically each time the study is re-run. 
Yellow highlights have been added to these examples to demonstrate how the information is shared across all parts of PTW.
A downloadable version of the Arc Flash Evaluation brochure is available here.
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