Building the EV Charger Infrastructure: A Road to Safe Installation, Use, and Maintenance

Corey Hannahs, National Fire Protection Association Fall 2022 Features, Features

America has been built on progress. Author C.S. Lewis once stated: “We all want progress, but if you’re on the wrong road, progress means doing an about-turn and walking back to the right road; in that case, the man who turns back soonest is the most progressive.” It could certainly be contended that the man who never has to turn …

Electrical Vehicle Charging in the US

Tony Sargent, SemaConnect Fall 2022 Features, Features

The world is transitioning to electric vehicles (EVs). In order to do so, thousands of charging stations are needed. As with any emerging technology, a lot of new terminology and new processes must be learned. This article aims to simplify the world of EV charging with a deep dive into the terminology, statistics, and installation process for electric vehicle (EV) …

Checklists and Effective Job Briefings Are Important to Improving Safety

Daryld Ray Crow, DRC Consulting, Inc. Features, Summer 2022 Features

“People who are trying to change the world need to use checklists.” BUSINESSMAN AND AUTHOR GUY KAWASAKI Checklists and effective job briefings are important to ensure hazards that may exist when performing a task are addressed before starting the job. In addition, job briefings are important to ensure people understand their job roles and have a chance to speak up …

Mentorship Is Critical in the Electrical Sector

Mike Doherty, eHazard Features, Summer 2022 Features

Mentoring has been a critical and foundational component in the electrical sector since its beginning. The basic tenants of electrical tradesperson apprenticeships and electrical engineers in training has always been coaching and mentoring by those with the interpersonal skills, relevant expertise, and knowledge to be able to pass it on. The electrical sector has always taken particularly great pride in …

Battery Safety

Andrew Sagl, Megger Features, Summer 2022 Features

It’s happened to nearly everyone. You go to use a simple electrical device…a flashlight, a voltmeter, a TV remote, or a child’s toy…and the battery is dead. It has become exhausted and must be replaced. Or worse, you open the device to find that the battery has corroded, possibly damaging or even destroying the contacts. In some critical respects, essentially …

Improved Method for Safe Timing Measurement of GIS Circuit Breakers

Radenko Ostojic, Adnan Secic, Budo Milovic, and Kerim Obarcanin, DV Power Features, Summer 2022 Features

In gas-insulated substations (GIS), the high-voltage elements, including conductors, circuit breaker interrupters, switches, current transformers (CTs), and voltage transformers, are encapsulated in SF6 gas inside grounded metal enclosures.[1] For that reason, direct access to circuit breaker (CB) main circuit terminals for testing purposes is not possible. The inaccessibility of main circuit terminals requires several actions to be taken before conducting …

Don’t Have a Blast! Best Practices for Arc-Flash Mitigation

David Rewitzer, Hood Patterson & Dewar Features, Spring 2022 Features

Arc-flash reduction methods must be considered prior to working on energized electrical equipment for personnel safety. The idea behind energy reduction is to place energized electrical equipment in a state where less arc energy is available when an arcing fault occurs. These techniques range from the obvious (de-energize!) to more complex and costly engineering solutions. NEC Article 240.87-2011, initially titled …

A Reliable Arc-Flash Protection System

Hang Li & Deepti Almelkar, Schweitzer Engineering Laboratories, Inc. Features, Spring 2022 Features

An electric arc or arc flash occurs when a high voltage causes ionization of a gas — for example, air. Ionization turns an ordinarily nonconductive gas into conductive gas that can carry a sustained current. The color of a typical arc flash in air is very distinctive. This is because air is composed of 21% oxygen and 78% nitrogen; oxygen …

Turning the Corner on Cyber-Secure Protection Testing

Bryan Gwyn, Sagar Singam, and Joe Stevenson, Doble Engineering Company Features, Winter 2021 Features

Matters of NERC PRC and NERC CIP compliance intersect during protection system testing on substation networks. In the modern regulatory environment, the benefits of computer-based relaying are challenged by the costs of cyber security and disrupted or insufficient relay testing practices. The way forward demands interconnected data and the ability to track critical metrics automatically. Organizations can modernize while ensuring …

Quick Guide to Discharge Testing

Sanket Bolar, Megger Features, Winter 2021 Features

Batteries serve as the main source of power in a substation in the event of an AC outage. They power critical loads and equipment like relays, indicator lamps, circuit-breaker control, motor operators, SCADA, event recorders, etc. As the battery is truly put to the test only during an outage, it is important to monitor battery health on a regular basis …