
Comtrade Viewer
COMTRADE record viewer.
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About
COMTRADE Viewer is an easy-to-use tool for viewing and analyzing power system event records. Display waveforms directly on your device. Now includes incremental based double-ended fault locator based on method of Kasztenny and Smelich.
Supported file formats include:
• COMTRADE (ASCII and Binary)
• SEL .cev, .eve, and .evzip event records
• SEL Motor Start Reports (.msr and .cmsr)
• Beckwith M-3425A, M-3430, and M-3311A .osc records
• S&C IntelliRupter Fault Interrupter records (.wfc)
• ATP/EMTP .pl4 files
Open files directly from Mail, Files, AirDrop, and other supported apps, or explore the included sample records to get started.
Built for power system engineers and technicians who need quick access to event records while in the field, at the office, or on the go.
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What's New in Comtrade Viewer
2.2.5
September 12, 2026
New: Incremental Fault Locator (experimental) — double-ended fault location from a record at each end, using the incremental-quantity time-domain method of Kasztenny and Smelich. No faulted loop to select, no zero-sequence impedance needed. Includes a built-in sample pair to try it on.
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