Observed arrival · 2026-09-20
Sagswell Reads Power-System Fault Records in the Browser
A browser-based COMTRADE analyzer for protection and power-quality engineers.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Protection and power-quality engineers
- Worth noticing
- It supports ASCII, BINARY, BINARY32, FLOAT32, multi-rate, and combined .cff COMTRADE records.
Field notes
Sagswell targets a specialized engineering workflow rather than a general-purpose charting task. Its stated parser covers COMTRADE configurations from 1991, 1999, and 2013, along with ASCII, BINARY, BINARY32, FLOAT32, multi-rate, and combined CFF data. The analysis list includes a one-cycle sliding DFT, symmetrical components, THD, K-factor, crest factor, and event classification. The page also documents limits around flicker Pst and per-unit reference values instead of hiding those assumptions.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
$PaidCommerce or pricing visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
ƒJavaScriptBrowser-side code central
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