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City of Everett 26 28 16 - 7 <br /> Inductive Charging Infrastructure for Everett Transit <br /> d. Measure fuse resistance. Investigate fuse-resistance values that deviate <br /> from each other by more than 15 percent. <br /> e. Perform ground fault test in accordance with NETA ATS Section 7.14 <br /> "Ground Fault Protection Systems, Low-Voltage." <br /> D. Tests and Inspections for Molded-Case Circuit Breakers: <br /> 1. Visual and Mechanical Inspection: <br /> a. Verify that equipment nameplate data are as described in the <br /> Specifications and shown on Drawings. <br /> b. Inspect physical and mechanical condition. <br /> c. Inspect anchorage, alignment, grounding, and clearances. <br /> d. Verify that unit is clean. <br /> e. Operate circuit breaker to ensure smooth operation. <br /> f. 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 /> g. Inspect operating mechanism, contacts, and chutes in unsealed units. <br /> h. Perform adjustments for final protective device settings in accordance with <br /> coordination study. <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. Perform insulation-resistance tests for one minute on each pole, phase-to- <br /> phase and phase-to-ground with circuit breaker closed, and across each <br /> open pole. Apply voltage in accordance with manufacturer's published <br /> data. In 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 /> c. Perform contact/pole resistance test. Drop values may not exceed high <br /> level of manufacturer's published data. If manufacturer's published data are <br /> not available, investigate values that deviate from adjacent poles or similar <br /> switches by more than 50 percent of lowest value. <br /> 26 28 16 - 7 ENCLOSED SWITCHES AND CIRCUIT BREAKERS <br />