Free power system event record viewer for iOS and Android devices.
Learn the basics of loading and viewing COMTRADE, SEL event records, Beckwith OSC records, IntelliRupter records, and PL4 files in just a few minutes.
Watch Quick Start VideoComtrade Viewer 2.2.2 added support for SEL event records (.cev, .eve, and .evzip), SEL Motor Start Reports (.msr and .cmsr), Beckwith M-3425A, M-3430, and M-3311A .osc records, S&C IntelliRupter fault records (.wfc), and ATP/EMTP .pl4 files.
Comtrade Viewer 2.1.0 added phasor diagram, symmetrical components calculations, and R-X impedance plane plotting of loop impedances.
Supports direct imports of COMTRADE, SEL event records, Beckwith OSC records, IntelliRupter records, and ATP/EMTP PL4 files.
Comtrade Viewer 3.2.2 added support for SEL event records (.cev, .eve, and .evzip), SEL Motor Start Reports (.msr and .cmsr), Beckwith M-3425A, M-3430, and M-3311A .osc records, S&C IntelliRupter fault records (.wfc), and ATP/EMTP .pl4 files.
Comtrade Viewer 3.2.0 added phasor diagram, symmetrical components calculations, and R-X impedance plane plotting of loop impedances.
Supports Android 7 and later, bundled sample records, and direct imports of COMTRADE, SEL event records, Beckwith OSC records, IntelliRupter records, and ATP/EMTP PL4 files.
Download Sample COMTRADE Event
Extract the .cfg and .dat files into your device Downloads folder.