Work Samples

Tools

Name: Covenant Systems
Address: US
Price range: $$

Software we wrote, published where you can run it rather than read about it. Each one is a working tool and a demonstration of what we build — use it for real work if it is useful to you. They run entirely in your browser, so nothing you load ever leaves your machine.

Protection and power systems

Relay records, device coordination, and the order things actually happened in — read from the files the equipment writes, without the vendor's desktop software.

Work Sample

SEL Event Analyzer

Relay fault analysis in your browser

Analyze protective relay events without proprietary desktop software. Step through reference waveforms for single line-to-ground, line-to-line, double line-to-ground and three-phase faults, or load your own SEL .CEV or COMTRADE record and let it classify the fault, measure the trip time, calculate distance to fault, resolve the symmetrical components, phasors, harmonic spectrum and impedance trajectory, evaluate the overcurrent elements against the relay's own settings, search every element in the relay word, and export the whole analysis as CSV.

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Work Sample

TCC Curve Plotter

Coordination curves on one log-log plot

Plot protective device time-current curves together and measure the gaps between them. Overcurrent relays on the IEEE C37.112 US and IEC 60255 families with optional instantaneous elements, fuses fitted to two points off the manufacturer's own sheet, and low-voltage breakers with long-time, short-time and instantaneous bands. Drag a fault current across the plot to see the order of operation, and let the coordination check find the worst margin anywhere in the range rather than at the one value you happened to test — including the crossovers where the upstream device starts tripping first.

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Work Sample

Sequence of Events Merger

Every device's log on one timebase

Merge SER reports and event logs from several relays, RTACs and SCADA devices into one ordered sequence. The parser looks for a time, a point name and a state rather than for a vendor's layout, so an SEL-451 table, an older SEL-351S one and an RTAC CSV all read without special-casing. Pin two events you know to be simultaneous and each device's clock error becomes a measurement instead of an assumption — and anywhere two devices sit closer together than their combined clock uncertainty, the tool marks the order as unestablished rather than drawing a sequence the logs cannot support.

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Fiber optics

Traces and loss measurements taken from the instrument's own file, then checked against the samples it recorded rather than taken on trust.

Work Sample

OTDR .SOR Reader

Open a fiber trace without the vendor's software

Read a Telcordia SR-4731 (.SOR) OTDR trace in the browser: the backscatter curve with measurement markers, the acquisition settings, the instrument's own event table, and an independent least-squares re-measurement of every splice, connector and section attenuation taken from the samples rather than read out of the file. Both sets of numbers are shown side by side and never merged, because where an instrument's automatic event finder and a second pass over the same samples disagree is the most useful thing on the screen. Load the same span shot from the far end and it averages the pair, resolving the gainers that make a splice look as though it produced light into the loss it actually cost.

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Networks and IT

Configuration that fails quietly: the kind that looks correct in a control panel and still costs you mail, or time, or both.

Work Sample

Email Deliverability Checker

Find out why your mail lands in spam

Check a domain's SPF, DMARC, DKIM and MX records and get told what each one actually does. The part most checkers skip: SPF allows only ten DNS lookups per check, includes nest, and adding one provider too many silently breaks authentication for all your mail while the record still looks correct. This one walks the whole include chain, counts the lookups as a receiving server would, and names the exact term that tips it over.

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Private by design

Every tool here does its work client-side. Files you open are parsed in the browser and are never uploaded, logged or stored — which matters when the data is a fault record, a drawing or anything else your organization treats as confidential.

Need something similar built for your team, or the same capability inside your own systems?