Originally introduced in 2011, the National Electrical Code (NEC) Section 240.87 was developed to reduce clearing times when a circuit breaker without an instantaneous trip unit was installed. This section was titled “Non-Instantaneous Trip.” Later, in the 2014 revision cycle, the NEC changed this section to “Arc Energy Reduction,” and the scope was slightly changed. […]
Arc flash incidents are one of the most common and most serious hazards we face in the electrical power industry. An arc flash is the sudden release of energy caused by an electrical fault, arcing in air from one conductor to another or to ground. Arc-flash incidents are normally caused by the failure of equipment […]
NERC PRC-005 is one of the most essential standards to ensure the safety and reliability of your bulk electric system. Originally adopted in February 2005, NERC PRC-005 continues to establish documentation programs and a maintenance schedule for all protection systems. This includes automatic reclosing and sudden pressure relaying which must function properly to maintain your […]
Are you considering installing or upgrading your facility’s excitation system or do you have plans for an AVR upgrade in your budget? Just like older relays or meters, excitation systems become obsolete and need replaced. An upgraded excitation system allows for all the modern microprocessor benefits such as event records, flexible logic and monitoring and […]
Qualus recently launched an Engineering Boot Camp program focused on protection and control design to provide comprehensive training for entry-level electrical engineers as they start their career in the utility industry. After its first Boot Camp program in 2016, geared toward field services, Qualus has invested time and resources to launch a new program specifically […]