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City of Everett 26 28 16 - 6 <br /> Inductive Charging Infrastructure for Everett Transit <br /> C. Tests and Inspections for Switches: <br /> 1. Visual and Mechanical Inspection: <br /> a. Inspect physical and mechanical condition. <br /> b. Inspect anchorage, alignment, grounding, and clearances. <br /> c. Verify that unit is clean. <br /> d. Verify blade alignment, blade penetration, travel stops, and mechanical <br /> operation. <br /> e. Verify that fuse sizes and types match the Specifications and Drawings. <br /> f. Verify that each fuse has adequate mechanical support and contact <br /> integrity. <br /> g. Inspect bolted electrical connections for high resistance using one of the <br /> following methods: <br /> 1) Use low-resistance ohmmeter. <br /> a) Compare bolted connection resistance values to values of <br /> similar connections. Investigate values that deviate from those <br /> of similar bolted connections by more than 50 percent of lowest <br /> value. <br /> 2) Verify tightness of accessible bolted electrical connections by <br /> calibrated torque-wrench method in accordance with manufacturer's <br /> published data or NETA ATS Table 100.12. <br /> a) Bolt-torque levels must be in accordance with manufacturer's <br /> published data. In absence of manufacturer's published data, <br /> use NETA ATS Table 100.12. <br /> h. Verify that operation and sequencing of interlocking systems is as <br /> described in the Specifications and shown on Drawings. <br /> i. Verify correct phase barrier installation. <br /> j. Verify lubrication of moving current-carrying parts and moving and sliding <br /> surfaces. <br /> 2. Electrical Tests: <br /> a. Perform resistance measurements through bolted connections with low- <br /> resistance ohmmeter. Compare bolted connection resistance values to <br /> values of similar connections. Investigate values that deviate from adjacent <br /> poles or similar switches by more than 50 percent of lowest value. <br /> b. Measure contact resistance across each switchblade fuseholder. Drop <br /> values may not exceed high level of manufacturer's published data. If <br /> manufacturer's published data are not available, investigate values that <br /> deviate from adjacent poles or similar switches by more than 50 percent of <br /> lowest value. <br /> c. Perform insulation-resistance tests for one minute on each pole, phase-to- <br /> phase and phase-to-ground with switch closed, and across each open <br /> pole. Apply voltage in accordance with manufacturer's published data. In <br /> absence of manufacturer's published data, use Table 100.1 from <br /> NETA ATS. Investigate values of insulation resistance less than those <br /> published in Table 100.1 or as recommended in manufacturer's published <br /> data. <br /> 26 28 16 - 6 ENCLOSED SWITCHES AND CIRCUIT BREAKERS <br />