I want to start by thanking all NETA members and Board members for their support and trust to help lead the organization as I step into my term as President. It truly is an honor to be part of such a first-class organization that’s so well-respected all across the world and to be able to represent and lead it is …
The rapidly developing industry of renewable power generation can be compared to an hourglass. Inexhaustible supplies of free resources — sun and wind — are converted into a corresponding outflow of electrical energy at notable return on investment. But the process includes the neck of the hourglass through which the resources must pass. This is the solar array or wind …
1. Describe the function of polarity marks on current transformers. 2. Transformer differential relays protecting a 50 MVA, 138 kV – 13.09 Y/7.56 kV transformer have been operating normally during the construction phase of a project. When the transformer is being brought up to full load it trips. There is no indication of a fault, as all tests on the transformer and cable …
People are easily distracted in a world filled with more distractions every day. In this day of modern technology, it is easy to get overwhelmed with the number of distracting devices out there, and these devices have encroached upon the driving environment. Cell phones are convenient means to communicate over long distances, but couple them with texting, email, internet, and …
“What are you doing here?” asked the manufacturer’s testing representative. “We are doing start-up of the gear, and your work seems redundant.” Redundant? That depends on what each of us is responsible for checking. That depends on who is going to ensure that all the known potential failures get checked and as needed, corrected. As an industrial or commercial buyer, …
Numerical protection relays offer the ability to alarm for many abnormal operating conditions, including the health of the relay. Below is a list of typical conditions to alarm for due to an abnormal condition: Overexcitation Phase undervoltage Loss of potential or blown fuse(s) Relay firmware or hardware failure Relay access Over or under station battery DC voltage Trip coil monitoring …
The National Fire Protection Association (NFPA) is best known for the 70 standard, which is a consensus standard reviewed and updated every three years. The NFPA produces many additional standards covering topics such as Aircraft Rescue and Fire Fighting, Finishing Processes, and Wastewater Treatment Plants. There are three standards that pertain directly to electrical workers and equipment: • NFPA 70 …