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How-To's

Password Override Jumper on RTAC 3505

Jeff MacKinnon, P.Eng. · Jun 25, 2020 ·

Have you ever arrived at a site and there is no password for the device? You have to log on the PLC or RTU but the owner doesn’t know the password and it isn’t written down anywhere? Or maybe you have a bench unit that you forgot the password for. That’s what happened to me […]

Time of Day Calculations with VTScada

Jeff MacKinnon, P.Eng. · Jun 16, 2020 ·

Someday I hope that it will be standard for utilities to provide a API that customers can use to calculate the current rates for energy, etc. Today however, we have to do it by hand. My last post was a straightforward energy rate with a base charge, but I have a time of day rate […]

Calculations in VTScada

Jeff MacKinnon, P.Eng. · May 11, 2020 ·

You already know I like VTScada as my HMI/SCADA application of choice, and being able to add functions and calculation to tags is another reason I like it. And did you know they have a FREE (as in beer) version that you can download and work with? Its what I use for my Home Energy […]

Connect a SEL-849 with VTScada

Jeff MacKinnon, P.Eng. · Feb 4, 2020 ·

I’m helping a client troubleshoot an HPU motor tripping. There isn’t any monitoring of current and they are running out of ideas. I suggested we pick up a SEL-849 and tie it into the SCADA and trend the current and figure out how that works. This post is a tutorial on how to get started […]

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Electrical Safety

Electrical safety is a nebulous thing, but we define it as the set of systems designed to lower the risks associated with the electrical hazards of shock, arc flash and arc blast, to an acceptable level. In our day-to-day life this is handled for us

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More about Smart Grid

Arc Flash and Electrical Safety are important concepts for any engineer to understand

An electricity supply network that uses digital communications technology to detect and react to local changes in usage. – Oxford English Dictionary Smart Grid is a concept describing the evolution of the power system. Among the desired future power.

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