Opening CEV Files

The CEV file type is primarily associated with AcSELerator QuickSet.

CEV	File extension: CEV
	File type:	log file

What is a CEV file

CEV files mostly belong to AcSELerator QuickSet. The CEV file is a SEL relay event file used to record event data from protective relays in electrical power systems.
It stores time‐stamped information that helps in diagnosing system faults and tracking relay operations.

Event Logging: Captures relay triggers and operational details

System Analysis: Provides data for troubleshooting electrical faults

Alternative Description: Sometimes known as a SEL Comtrade Oscillography File

The file is managed using AcSELerator QuickSet software.
FilExt.com note: For more details, visit the AcSELerator QuickSet official page.

How to open CEV files

You need a suitable software like AcSELerator QuickSet to open a CEV file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your CEV file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a CEV file directly in the browser:. Just drag the file onto this browser window and drop it.

Online CEV Text Viewer

Choose your .cev file to view

or drag and drop it here

Online File Viewer

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How to extract texts from CEV files or capture a screenshot to PDF, JPG, DOCX, TXT, ...

1. To do so, click the "Choose your .cev file to view" button above.
2. After your file is opened in browser,
3. click "Save as..." in the menu.
4. Then choose the file format (e.g. JPG, PDF, DOCX, TXT, ...) you want.
5. Download the converted file.

CEV file extension format:

To view or edit CEV files you need to know the file format, because it determines how the data in this file is stored. A file format is determined by the file extension and signature, so JPEG images have the extension .jpg and the first bytes in the file are ÿØÿ. If the file extension or signature does not match the file format, errors will occur when opening or editing the file. So a detailed analysis of a file is vital in order to determine the format and the associated program. Our evaluation of the CEV files looks like this:

An CEV file predominantly uses a uniform format. But the following two file formats are common:

• 80% of all CEV files start with the magic bytes "FID",", which are always the first bytes of this file format. The contents of these files can even be read by a human. A typical file size is 60 KB. The file type was developed only in the last few years. The files contain the following words: "MONTH","DAY","YEAR","HOUR","MIN","SEC","MSEC","0ACA", FREQ, CYC_A, CYC_D, "FID","0143" and CEV_VER. These files are attributed to trip, event, trigger, diff, samp, relay, filtered, phase, solar, date and unit.
• 4% of all CEV files use the same file format, which have the signature 02 22 46 49 44 22 2C 22. If you open these files in a text editor, you can view and read the content yourself. The files are often between 26 KB and 320 KB in size. The files contain the following words: "MONTH","DAY","YEAR","HOUR","MIN","SEC","MSEC","0ACA", "FID","RID","SID","03E2" and EVENT.

All other CEV files (16%) have different formats, such as CEV. Sometimes used for fault, seite or confidential. If you want to find out what your CEV file contains, drag and drop it onto this page.