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Direct Transfer Trip and Direct Under-Reaching Transfer Trip Schemes Video

We’re continuing our end-to-end testing series by looking at the two simplest communication-assisted trip schemes used. Watch this Direct Transfer Trip and Direct Under-Reaching Transfer Trip

Valence will be at the NETA PowerTest 2016 Conference in Fort Worth, TN

The NETA PowerTest 2016 Conference is one of the best conferences in the industry. It starts on Monday, March 14th with a series of 45-minute lectures from industry experts. There are several tracks,

A New Hands-On Protective Relay Testing Fundamentals Class has been Scheduled in Denver

Denver, CO – April 19-21, 2016 Get training from Chris Werstiuk, author of The Relay Testing Handbook Valence Electrical Training Services is hosting a Protective Relay Testing Fundamentals class at

Thank You for Your Support!

Big Changes are Coming Soon 2015 was an incredible year for Valence Electrical Training Services. We: Sold over 5,000 copies of The Relay Testing Handbook to date Trained over 150 students in our hands-on

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

Save Your Spot at the 33rd Annual Hands-On Relay School

The Hands-on Relay School in Pullman, WA is probably the best environment for relay training there is. I highly recommend that everyone attend. Sign up as soon as you can because they sell out quickly. Here’s

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

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

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

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.

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.

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

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

Get NETA CTDs for All of Our Online Courses

The InterNational Electrical Testing Association (NETA at http://www.netaworld.org/) just informed us that our latest online training course, Drawing Phasor Diagrams for Relay Testers, has been approved

The Relay Testing Handbook Updates

Our publishing model allows us to quickly correct errors or omissions and implement suggestions. Please contact us at [email protected] to report a problem. If we implement your suggestion, we’ll

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