Comtrade Viewer

Release History Sample COMTRADE Event Help Report Bugs

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Supported Formats

⌁COMTRADE (.cfg + .dat)

CFFCOMTRADE CFF (.cff)

SELSEL (.cev, .eve, .evzip)

MSEL Motor Start (.msr, .cmsr)

⌁Beckwith OSC (.osc)

S&CS&C IntelliRupter (.wfc)

PL4ATP / EMTP PL4 (.pl4)

ZIPZIP Archives (.zip)

Open individual records or a ZIP archive containing multiple supported record types. When a ZIP file contains more than one record, Comtrade Viewer allows you to select which record to open and view.

Quick Start Video

Learn the basics of loading and viewing COMTRADE, SEL event records, Beckwith OSC records, S&C IntelliRupter records, and PL4 files in just a few minutes.

Watch Quick Start Video

iOS

Current iOS Release: 2.2.3 (June 2026)

Same features as the Android version. Requires iOS 15.0 or later. Supports direct import of all supported file formats.

Android

Current Android Release: 3.2.3 (June 2026)

Same features as the iOS version. Requires Android 7.0 or later and supports direct import of all supported file formats.

What's New

Current releases: iOS 2.2.3 and Android 3.2.3.

Added ability to open a zip file containing multiple records of any supported type. User then may select one of the records to view. This makes it convenient to group all related records in one compressed file that can be opened from mail or from the device storage.

Resources

Release History

Help & Documentation

Download Sample COMTRADE Event

Extract the .cfg and .dat files into your device Downloads folder.

Report Bugs / View Known Issues