TOA4’s Fluid Quality Index (fqindex)

The S. D. Myers Inc. laboratory reports the ratio of interfacial tension (IFT) and acid number as an indicator of the extent of oxidation of insulating oil. This ratio is the inspiration for TOA4’s Fluid Quality Index, which is calculated with an extra factor of 1000 to ensure that typical values of the index are… Continue reading

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TOA4 Online Q&A

What is the difference between kv_ratings and ratedkv in TOA4? The ratedkv field — a “legacy” field inherited from TOA3 — is numeric and designates the rated kV of a piece of equipment, or the highest rated winding kV of a transformer. The kv_ratings field is text and can be used to display multiple winding… Continue reading

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TOA4 In-Service Equipment Filter

Each equipment item has an “In-service” checkbox – visible when editing the item – which should be checked if the equipment is in service and unchecked if the equipment is not in service, i.e., retired or permanently de-activated. In an equipment import or export file, this field is called “in_service” and has a value of… Continue reading

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TOA4 Online Mobile Access

If you are a TOA4 Online user and have a web-enabled cell phone, Blackberry, or PDA, you might like to try out TOA4’s new mobile access feature. Point your phone’s web browser to the TOA4 Online address, but add “/m” at the end of that address. Some cell phone companies aren’t very good with handling… Continue reading

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Honey, I deleted all my data!

Early one Monday morning a TOA4 Online user reported, not too cheerfully, having “accidentally” deleted all of the equipment (and therefore all of the test data too) from her company’s TOA4 database. Anything we could do? at all? I could hear her boss’s heavy breathing in the background. Yes, of course, we could fix it,… Continue reading

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