Advancements in the Industry: Capacitive Coupling: Measurement Quality and Safety Issues

Felix Feustel, OMICRON electronics CAP Corner, Spring 2022 CAP Corner

A basic distinction can be made between system safety and product safety. Product safety has improved constantly over the past few years, if not decades. One reason for this is that various standards have been established or improved recently. Usually, norms or standards reflect the state-of-the-art in modern techniques. Using state-of-the-art measurement equipment that meets quality standards for safety minimizes …

CAP Spotlight MVA: Synonymous with Transformer Services

NETA World Staff CAP Corner, Spring 2022 CAP Corner

NETA’s Corporate Alliance Partners (CAPs) are a group of industry-leading companies that have joined forces with NETA to work together toward a common aim: improving quality, safety, and electrical system reliability. Our continuing CAP Spotlight series highlights some of their individual successes as NETA World interviews MVA President Scott Reed. NW: What do people think when they hear of MVA? …

Advancements in the Industry: Traveling Wave Relay Application, Commissioning, and Initial Experience

Fari Elhaj and Scott Cooper, OMICRON electronics, and Anthony Savesind and Francisco J. Sanchez, Salt River Project CAP Corner, Winter 2021 CAP Corner

Traditional line protection incorporates elements in the phasor domain. Phasor-based line protection uses a full cycle of data and is subject to CT accuracy limitations, limiting operating speed and fault location accuracy. However, new advances in protective relay technology have facilitated the introduction of relays that operate in the time domain. By detecting and time-stamping the arrival of traveling waves …

CAP Spotlight: A-Rent: Quality Equipment and Responsive Service

NETA World Staff CAP Corner, Winter 2021 CAP Corner

NETA’s Corporate Alliance Partners (CAPs) are a group of industry-leading companies that have joined forces with NETA to work together toward a common aim: improving quality, safety, and electrical system reliability. Our continuing CAP Spotlight series highlights some of their individual successes as NETA World interviews A-Rent CEO Paul Seppanen. NWJ: Please briefly describe A-Rent Seppanen: A-Rent specializes in electrical …

Advancements in the Industry: Determining Cellulose Degradation in Transformers Using Indirect Tests

Lance R. Lewand and David Koehler, Doble Engineering Company Fall 2021 CAP Corner, CAP Corner

The design life of a transformer is usually about 20 to 25 years. In the United States, estimates show the average age of a transformer is currently around 42 years, which means a number of even older units are still in service. As with all things, transformers age and degrade over time. Transformer failures can come from a variety of …

Advancements in the Industry: Simplifying the Testing of Automation and Control Systems

Eugenio Carvalheira and Andreas Klien CAP Corner, Summer 2021 CAP Corner

During the life cycle of a substation automation system (SAS), it takes considerable effort and time to test the communication, interlocking logic, and proper operation of all signals transmitted to supervisory control and data acquisition (SCADA) systems. In a substation that makes use of IEC 61850 communication, all the engineering and configuration data can be saved in standard-format files — the …

Insights & Observations — NETA CAP Spotlight Utility Relay Company: Leading-Edge Solutions to Real Problems

NETA World Staff CAP Corner, Summer 2021 CAP Corner

NETA’s Corporate Alliance Partners (CAPs) are a group of industry-leading companies that have joined forces with NETA to work together toward a common aim: improving quality, safety, and electrical system reliability. Our continuing CAP Spotlight series highlights some of their individual successes. In this issue, NETA World interviews Brian Bianchi, Director of Sales and Marketing at Utility Relay Company. NW: …

A Technician’s Approach to Impedance-Based Protective Elements

Ralph Parrett CAP Corner, Spring 2021 CAP Corner

A power system uses  various  elements within protective relay schemes, and having a thorough understanding of the theory behind these protective elements is more than useful — if not required — for anyone who comes in contact with them. Design engineers who must execute calculations based on system characteristics and machine capabilities and field technicians who conduct testing, calibration, and …

AVO Training Institute: Providing Customer Training in the Safest Possible Environment

NETA World Staff CAP Corner, Spring 2021 CAP Corner

NETA’s Corporate Alliance Partners (CAPs) are a group of industry-leading companies that have joined forces with NETA to work together toward a common aim: improving quality, safety, and electrical system reliability. In our continuing CAP Spotlight series, we highlight some of their individual successes. In this issue, NETA World interviews Ralph Parrett, Manager of Content & Delivery, at AVO Training …

PF Measurements On Complete Stator Windings

Mathieu Lachance CAP Corner, Winter 2020 CAP Corner

Power factor (PF) measurement has been performed on stator windings for many decades and is a widely accepted and recommended tool to assess the insulation system of individual bars/coils and for complete stator windings. The test is known to be sensitive to several global defects such as the degree of curing of the bonding materials, moisture ingress, contamination, and thermal …