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City of Everett 26 05 73.19 - 6 <br /> Inductive Charging Infrastructure for Everett Transit <br /> 3.3 POWER SYSTEM DATA <br /> A. Obtain data necessary for conduct of arc-flash hazard analysis. <br /> 1. Verify completeness of data supplied on one-line diagram on Drawings and <br /> under"Preparatory Studies" Paragraph in "Arc-Flash Hazard Analysis" Article. <br /> 2. For new equipment, use characteristics from approved submittals under <br /> provisions of action submittals and information submittals for this Project. <br /> 3. For existing equipment, whether or not relocated, obtain required electrical <br /> distribution system data by field investigation and surveys conducted by qualified <br /> technicians and engineers. <br /> B. Electrical Survey Data: Gather and tabulate the following input data to support study. <br /> Comply with recommendations in IEEE 1584 and NFPA 70E as to amount of detail that <br /> is required to be acquired in field. Field data gathering must be under direct supervision <br /> and control of engineer in charge of performing study, and must be by, or under <br /> supervision of, qualified electrical professional engineer. Data include, but are not <br /> limited to, the following: <br /> 1. Product Data for overcurrent protective devices specified in other Sections and <br /> involved in overcurrent protective device coordination studies. Use equipment <br /> designation tags that are consistent with electrical distribution system diagrams, <br /> overcurrent protective device submittals, input and output data, and <br /> recommended device settings. <br /> 2. Obtain electrical power utility impedance or available short circuit current at <br /> service. <br /> 3. Power sources and ties. <br /> 4. Short-circuit current at each system bus (three phase and line to ground). <br /> 5. Full-load current of loads. <br /> 6. Voltage level at each bus. <br /> 7. For transformers, include kVA, primary and secondary voltages, connection type, <br /> impedance, X/R ratio, taps measured in percent, and phase shift. <br /> 8. For reactors, provide manufacturer and model designation, voltage rating and <br /> impedance. <br /> 9. For circuit breakers and fuses, provide manufacturer and model designation. List <br /> type of breaker, type of trip and available range of settings, SCCR, current rating, <br /> and breaker settings. <br /> 10. Generator short-circuit current contribution data, including short-circuit reactance, <br /> rated kVA, rated voltage, and X/R ratio. <br /> 11. For relays, provide manufacturer and model designation, current transformer <br /> ratios, potential transformer ratios, and relay settings. <br /> 12. Busway manufacturer and model designation, current rating, impedance, lengths, <br /> size, and conductor material. <br /> 13. Motor horsepower and NEMA MG 1 code letter designation. <br /> 14. Low-voltage conductor sizes, lengths, number, conductor material and conduit <br /> material (magnetic or nonmagnetic). <br /> 15. Medium-voltage conductor sizes, lengths, conductor material, conductor <br /> construction and metallic shield performance parameters, and conduit material <br /> (magnetic or nonmagnetic). <br /> 26 05 73.19 - 6 ARC-FLASH HAZARD ANALYSIS <br />