Comtrade Viewer
Free power system event record viewer for iOS and Android devices.
Supported Formats
Open power-system event records directly from your device, cloud storage, or a ZIP archive.
Quick Start Videos
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.
iOS
Requires iOS 15.0 or later. Supports direct import of all supported file formats. Now supports iPhone Duo.
Android
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 2.4.7 and Android 3.4.7.
- New FAULT button. Display relay reported fault location/information and/or estimate fault location using various single-ended methods (described in Help).
- New cursor readout modes. Switch the A/B cursor readouts from instantaneous values to RMS, fundamental phasor (magnitude and angle), harmonic, or THD.
- Frequency estimation. Frequency can be measured from a waveform itself and shown as an optional frequency lane on the plot, with its rate of change. See the Quick Frequency Estimation video.
At last revision: Added an incremental quantity based double-ended fault locator using the method described in this paper by Kasztenny and Smelich.
Resources
Download Sample COMTRADE Event
Extract the .cfg and .dat files into your device Downloads folder.
