Tag: NETA

Why is NETA important?

Many people do not know what NETA is. Before I can explain my views of NETA, the following statement is directly from NETA’s website. What is NETA? The InterNational Electrical Testing Association (NETA) is an organization that serves the electrical testing industry by offering accreditation of third-party electrical testing firms, certifying electrical testing technicians, producing […]

The Importance of Acceptance Testing

Acceptance Testing   Before we can begin to talk about “Acceptance Testing”, you may or may not understand the phrase. Acceptance Testing pertains to all new electrical components. These are either purchased from a distributor, or even a manufacturer, but have never been put into “service”, i.e. energized. When a building is being remodeled, or […]

Medium Voltage Cable / 15kV Terminations

Medium Voltage Cables Electrical wire is an integral part of our lifestyle. Whether you care to notice or not, copper/aluminum conductors are everywhere. They provide power to every business and home that wishes to be connected. Most of the time, people who aren’t in the electrical trade, tend to see overhead power lines. Those consist […]

Transformer Snubber Assembly

What is a Transformer Snubber?   It is a set of capacitors, surge arresters, fuses, and resistors typically found on medium voltage dry type transformers.   What are Snubbers designed for?   The main application has been to reduce damage to transformers during energizing applications. Energizing medium voltage transformers produces transient voltages. These transient voltages […]

General Electric Multilins Protective Relaying

Multilins SR745 & SR750 Model Power Supply Issues:   Recently, I have been tasked to perform some relay testing on multiple General Electric SR relay models. But in particular, the issues experienced have been with the original model SR745 (Transformer Protection Relay) and the SR750 (Feeder Protection Relay) models. Here are examples of the Original […]

Transformer Oil Samples

Transformer oil – what is it?   Transformer oil is an oil that is stable at high temperatures and has excellent electrical insulating properties. Typical motor oil that most people think of, is not the type of oil in a transformer. Transformer oil keeps the transformer cool. It also insulates the transformer and allows electrical components to be […]