IEEE 519 Limit finder

Foretec Electric

In-app purchases

About this app

The IEEE 519 Limit Finder app is now available on the Google Play Store.

This application enables calculation of the available Isc (short-circuit current) from the source up to the Point of Common Coupling (PCC) and determines the applicable TDD (Total Demand Distortion) limits in accordance with IEEE 519-2022. It supports HV and EHV systems, allowing users to evaluate TDD limits for voltage levels ranging from 11 kV up to 230 kV.

The app is specifically developed for power quality engineers, utility engineers, and electrical maintenance professionals who need to assess system strength (Isc/IL ratio) and perform measurements to ensure harmonic distortion levels remain within permissible limits.

This application is developed by Foretec Electric India Pvt Ltd., Coimbatore – 641 004, with over three decades of experience in the field of power quality. - www.foretecelectric.com

Key Features:
• Isc Calculation Support: Helps estimate short-circuit current from source to PCC for system evaluation
• TDD Limit Identification: Automatically calculates and determines applicable limits based on Isc/IL ratio as per IEEE 519-2022
• PDF Report Generation: Generates clean, professional TDD limit reports for documentation and compliance
• User-Friendly Interface: Simple, fast, and designed for real field conditions

This app reduces manual calculation time, improves consistency, and supports engineers in maintaining harmonic compliance as prescribed by IEEE 519-2022.

What’s new

TDD and THD Calculator from IEEE 519 Table