IEEE P384-D2-2018 pdf free.Draft Standard for Criteria for Independence of Class 1E Equipment and Circuits.
fiber-optic circuit: An instrumentation circuit that uses light through a fiber-optic cable as the means of transmitting signals. The fiber-optic circuit does not include the electrical current carrying components of the interface devices.
flame retardant: Capable of limiting the propagation of a fire beyond the area of influence of the energy source that initiated the fire.
FLEX: Diverse arid tiexible mitigation strategies that increase detnse-in-dcpth for beyond-design-basis external events to address an extended loss of alternating current power and loss of normal access to the ultimate heat sink.
independence: The state in which there is no mechanism by which any single design basis event, such as a flood, can cause redundant equipment to be inoperable.
isolation device: A device in a circuit (hat prevents malfunctions in one section of a circuit from causing unacceptable influences in other sections of the circuit or other circuits.
maximum credible voltage or current transient: That voltage or current transient that may exist in circuits, as determined by test or analysis. taking into consideration the circuit location, routing, and interconnections combined with failures that (he circuits may credibly experience.
raceway: Any channel that is designed and used expressly for supporting or enclosing wires, cable, or bus bars. Raceways consist primarily of, but are not restricted to. cable trays and conduits.
redundant equipment or system: Equipment or system that duplicates the essential function of’ another piece of equipment or system to the extent that either may perform the required function regardless of the state of operation or failure of the other.
safety class structures: Structures designed to protect Class I E equipment against the effucts of’ the design basis events. Separate safety class structures can be separate rooms in the same building. The rooms may share a common wall.
separation distance: Space that has no interposing structures, equipment, or materials that could aid in the propagation of fire or that could otherwise disable Class lE systems or equipment.
source cable: A cable carrying fault current resulting in the radiation of excessive heat. target cable: A cable that is exposed to a source cable’s excessive heat.IEEE P384-D2 pdf download.
IEEE P384-D2-2018 pdf free
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