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City of Everett 26 22 13 -6 <br /> Inductive Charging Infrastructure for Everett Transit <br /> 2) Inspect anchorage, alignment, and grounding. <br /> 3) Verify that resilient mounts are free and that shipping brackets have <br /> been removed. <br /> 4) Verify that unit is clean. <br /> 5) Perform specific inspections and mechanical tests recommended by <br /> manufacturer. <br /> 6) Verify that as-left tap connections are as specified. <br /> 7) Verify presence of surge arresters and that their ratings are as <br /> specified. <br /> b. Electrical Tests: <br /> 1) Measure resistance at windings, taps, and bolted connections. <br /> 2) Perform insulation-resistance tests winding-to-winding and windings- <br /> to-ground. Apply voltage in accordance with manufacturer's <br /> published data. In absence of manufacturer's published data, comply <br /> with NETA ATS, Table 100.5. Calculate polarization index: value of <br /> index may not be less than 1.0. <br /> 3) Perform power-factor or dissipation-factor tests on windings. <br /> 4) Perform turns-ratio tests at tap positions. Test results may not <br /> deviate by more than one-half percent from either adjacent coils or <br /> calculated ratio. If test fails, replace transformer. <br /> 5) Perform excitation-current test on each phase. <br /> 6) Perform applied voltage test on line- and load-side windings to <br /> ground. See IEEE C57.12.91, Sections 10.2 and 10.9. <br /> 7) Verify correct secondary voltage, phase-to-phase and phase-to- <br /> neutral, after energization and prior to loading. <br /> D. Test Labeling: On completion of satisfactory testing of units, attach dated and signed <br /> "Satisfactory Test" label to tested components. <br /> E. Nonconforming Work: <br /> 1. Transformer will be considered defective if it does not pass tests and inspections. <br /> 2. Remove and replace units that do not pass tests or inspections and retest as <br /> specified above. <br /> F. Assemble and submit test and inspection reports. <br /> G. Manufacturer Services: <br /> 1. Engage factory-authorized service representative to support field tests and <br /> inspections. <br /> 3.5 ADJUSTING <br /> A. Record transformer secondary voltage at unit for at least 48 hours of typical occupancy <br /> period. Adjust transformer taps to provide optimum voltage conditions at secondary <br /> terminals. Optimum is defined as not exceeding nameplate voltage plus 5 percent and <br /> not being lower than nameplate voltage minus 3 percent at maximum load conditions. <br /> Submit recording and tap settings as test results. <br /> 26 22 13 - 6 LOW-VOLTAGE DISTRIBUTION TRANSFORMERS <br />