GEs AKD20 Low Voltage Switchgear has unique and innovative features, which by design, greatly reduces the arc flash incident energy (severity) and the likelihood (probability) of its occurrence. These features give you the required protective and preventive control measures and forms as an integral part of the design of the switchgear.
2 pages. The goal of this article is to give the reader a basic understanding of what occurs during an arc flash incident, and an understanding of some of the terms used in qualifying the danger associated with such events.
7 pages. GE conducted a survey of industry professionals working in facilities related to the oil and gas industry, pulp and paper industry, and power generation. The study results revealed what we called the problematic three As of arc flash.
7 pages. A newer technology like GEs zone selective interlocking with Instantaneous protection (I-ZSI) enabled all the time has been developed to provide safety and selectivity at the same time, all the time. Zone selective interlocking schemes are limited to circuit breakers that are a short distance of each other. Selectivity between a circuit breaker and its downstream current limiting device without control signal connections between the two was also developed. GEs waveform recognition (WFR) algorithm extends the zone of selectivity from the low voltage switchgear down to the low voltage MCCs, panelboards and any other equipment and at the same time reduces the arc flash energy at this equipment to a low level. This feature has no distance limitation.