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All posts by Chris Werstiuk

Portable Phase Angle Meter from 1924 Silent Sentinels

Silent Sentinels 1924 Excerpt #16 This excerpt from the 1924 version of Silent Sentinels discusses how engineers used a phase angle meter in the early days of the electrical system.  What differences

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Instrument Transformers from 1924 Silent Sentinels

Silent Sentinels 1924 Excerpt #17 This excerpt from the 1924 version of Silent Sentinels discusses how engineers applied instrument transformers in the early days of the electrical system.  What differences

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Auxiliary Relays from 1924 Silent Sentinels

Silent Sentinels 1924 Excerpt #15 This excerpt from the 1924 version of Silent Sentinels discusses the most common auxiliary relays used in the early days of electrical systems. This is the 15th in the

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Temperature Relays from 1924 Silent Sentinels

Silent Sentinels 1924 Excerpt #14 This excerpt from the 1924 version of Silent Sentinels discusses the most common temperature relays used in the early days of electrical systems. This is the 14th in

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Direct-Current Relays from 1924 Silent Sentinels

Silent Sentinels 1924 Excerpt #13 This excerpt from the 1924 version of Silent Sentinels discusses the direct-current relays used in the early days of electrical systems. This is the 13th in the series.

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Westinghouse Protective and Control Relays from 1924 Silent Sentinels

Silent Sentinels 1924 Excerpt #12 This excerpt from the 1924 version of Silent Sentinels lists the protective and control relays used in the early days of electrical systems. This is the 12th in the series.

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Typical Relay Application from Silent Sentinels 1924

Silent Sentinels 1924 Excerpt #11 This excerpt from the 1924 version of Silent Sentinels discusses typical relay applications used in the early days of electrical systems. Are they much different than

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Relay Settings from 1924 Silent Sentinels

Silent Sentinels 1924 Excerpt #10 This excerpt from the 1924 version of Silent Sentinels discusses protective relay settings in the electrical system. This is the 10th in the series. Follow these links

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What is DC Offset? Ask Chris

I was recently asked about DC Offset during a paper I presented at the 2015 Hands-On Relay School and struggled with an answer because I know what it looks like and I know it exists, but I’ve never heard

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Automatic Control for Electrical Systems

Silent Sentinels 1924 Excerpt #9 This excerpt from the 1924 version of Silent Sentinels discusses automatic control in the electrical system. This is the 9th in the series. Follow these links to learn

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Direct-Current Systems from Silent Sentinels 1924

Silent Sentinels 1924 Excerpt #8 This excerpt from the 1924 version of Silent Sentinels discusses direct-current systems. This is the 8th in the series. Follow these links to learn more about this series

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What is the Best Protective Relay Test-Set?

Declaring the best protective relay test-set is a lot like declaring the best pickup truck. Any model of truck will get you from point A to point B in the city, but there are pros and cons for each one. 

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Ask Chris: What is the best path for high voltage electrical employment as a relay technician?

Here is a question submitted to the Ask Chris section of the RelayTraining.com website about the best path for electrical employment. I have just recently completed an IBEW apprenticeship and tested out

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What Electromechanical Relay Kicked Your Ass?

I’m writing a blog post to help people buy a protective relay test-set that’s right for their application. What electromechanical relays require the most VA, or compliance voltage, to test? I

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Some First-Generation Protective Relays from Silent Sentinels 1924

Silent Sentinels 1924 Excerpt #7 This excerpt from the 1924 version of Silent Sentinels lists some of the protective relays available in 1924. This is the 7th in the series. Follow these links to learn

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