TM 9-6115-604-34NAVFAC P-8-633-34Figure 5-29. Test Setup, Over/Undervoltage Relay K110 and K1115-35. UNDERVOLTAGE RELAY K111 (64, Figure 5-9).a.Inspect. See Figure 5-9.(1)Inspect screw and captive washer assemblies (62) and electrical connections for security.(2)Inspect wires connected to undervoltage relay Kill (64) for evidence of burning or insulation breakdown.b.Remove. See Figure 5-9.(1)Tag and disconnect wires from overvoltage relay K111 terminals.(2)Remove overvoltage relay K11 (64) by removing screw and captive washer assemblies (62).c.Bench-Test(1)Preparation for Bench Test.(a)Remove overvoltage relay K111 in accordance with step b, above.(b)Obtain a 3 phase, O to 250 V ac variable voltage source with a built-in voltmeter, a multimeter, (arelay tester) and a stopwatch.NOTEIf variable voltage source has no built in voltmeter, a separate 0-300 V ac voltmeter may beconnected across any two output lines of the three phase voltage source.(c)See Figure 5-29. Connect the 3 phase 250 V ac variable voltage source at terminals 1,2, and 3 ofrelay K111. Set multimeter to RX1 scale and connect across terminals 4 and 6 of the relay.5-73
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