Figure 5-10. Undervoltage Relay K111, Test Setup

Figure 5-9. Sync Check Relay K106, Test Setup

Figure 5-11. Reverse Power Relay K112, Test Setup

TM-5-6115-593-34 Generator Set Diesel Engine Driven Tactical Skid Mtd. 600 Kw 3 Phase 4 Wire 120/208 and 240/416 Volts Manual
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TM5-6115-593-34 NAVFAC P-8-631-34 TO-35C2-3-463-2 Figure 5-10. Undervoltage Relay K111, Test Setup. Repeat the test with the input connected to 2 and 4, and then again, between 3 and 4 by rotating switch S2. The trip points should be within 1 volt of each other. NOTE Disconnect relay from test setup. (d) With an ohmmeter, check that terminals 5, 6, 7, and 8, and terminals 1, 2, 3, and 4 are electrically isolated with the relay in either position. (2) Replacement. Remove relay (71, figure 5-1, sheet 2) by disconnecting and tagging wires, and removing four screws (70). h. Overload Relay K114 (62, figure 5-1) (1) Test (a) Connect the relay in the test setup shown in figure 5-13. (b) With the 120/208V AC power source energized, turn on the 24V DC power and close switch S1. Lamp DS1 shall light and DS2 shall be extinguished. (c) Adjust autotransformer T1, T2, and T3 until ammeters A1, A2, and A3 indicate 0.75 ampere. DS1 and DS2 shall not change states. (d) Adjust autotransformer T1 until ammeter A1 indicates 0.975 ampere. After 8 2 minutes, DS1 and DS2 must transfer states, if not, replace. (e) Repeat step (d) for auto-transformers T2 and T3. The test shall be the same as for T1. (2) Replacement. Remove relay (62, figure 5-1, sheet 2) by disconnecting and tagging wires and removing two screws (61). 5-13

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