"Institute of Electrical and Electronics Engineers (IEEE) standard 1584 has been the de facto standard for calculating the arc energy levels at different points in a power system. However, NFPA 70E provides the option of using the Arc Flash Hazard PPE Category task tables for PPE selection.
Which is right for you, and what do you need to know about each option? Find answers in our white paper, which describes how both types of analysis systems work and how to be sure you are using the tables correctly."
Working on energized equipment is one of the more dangerous scenarios technicians face in the field. As a result, there’s been a concerted industry effort to improve the understanding of electrical shock and arc flash hazards. I believe one of the most important standards in this safety push is the restructured language within the 2018 edition of the National Fire Protection Agency’s (NFPA’s) 70E “Standard for Electrical Safety in the Workplace.”
In the past, the standard addressed electrical hazards and risks holistically when considering energized electrical work. But today’s latest guidelines now identify hazards and risks independently and include recommendations for a thorough risk analysis that considers the hazard, the planned work task and potential human error. Together, the changes result in a clearer understanding of energized work and help reduce electrical incidents.
A powerful signal integrity analysis tool must be flexibility, easy to use and integrated into an existing EDA framework and design flow. In addition, it is important for the tool to be accurate enough. This report reviews a validation study for the Mentor Graphics HyperLynx 8.0 PI tool to establish confidence in using it for power integrity analysis.
For advanced signaling over high-loss channels, designs today are using equalization and several new measurement methods to evaluate the performance of the link. Both simulation and measurement tools support equalization and the new measurement methods, but correlation of results throughout the design flow is unclear. In this paper a high performance equalizing serial data link is measured and the performance is compared to that predicted by simulation. Then, the differences between simulation and measurements are discussed as well as methods to correlate the two.
This white paper aims to fill that knowledge gap byproviding introductory-level information about what arc flashes are, why they're so hazardous and what steps data center managers should take to safeguard their employees and infrastructure.