Figure 6-7. AC Output Control Box Test Setup

Figure 6-7. AC Output Control Box Test Setup (12) Output-Control Box Housing (24, figure 6-9). Inspect output control box housing for physical damage. Check that all hingeq covers, and latches operate properly. Check that all nameplates are in place. Check that side access cover is alwavs in date when box is being actively serviced. b. Test. (1) Reconnection Switch (S6) (1, figure 6-10). Tag and disconnect electrical connections except jumper wires from reconnection switch. Using an ohmmeter check for continuity between terminals listed in table 6-5 for each of the three switch positions. If continuity is not found for each pair of terminals listed, replace reconnection switch. If continuity is found between any other terminals switch should be replaced. (2) AC Circuit Breaker (CB1). Test that breaker will remain in both the ON and OFF positiona. (3) 15 Amp Circuit Breaker (CB3). Test that breaker will remain in both the set (pushed) and tripped (pulled) positions. (4) Convenience Receptacle (J14). With 15 amp circuit breaker in proper operating position, test con- venience receptacle using a 120 volt trouble light or voltmeter. With the unit operating and the 15 amp circuit breaker pushed in, 120 volts should be present at the receptacle. (5) Linear Reactor (Ll). Disconnect electrical connectors from control box. Use an ohmmeter to check TM5-6115-585-34 NAVFAC P-8-623-34 TO-35C2-3-455-2 TM-05684C/05685B-34 resistance of each of the three windings in the reactor by checking resistance between terminals 1 and 2, 3 and 4, 5 and 6. Resistance for each winding must be 13.5 ohms plus or minus 1.35, if not replace reactor. (6) Connector Assemblies. Test for continuity between each pin and case for shorts to ground. (7) Current Voltage Transformer (CVT1). Using an ohmmeter check three primary windings of transformer (figure 1-1, 6-7.1 and 6, figure 6-9) by measuring resistance from terminals H1 to H2, H3 to H4, H5 to H6. Resistance must be 2.27 ohms ± 0.227 ohms. Check resistance in three secondary windings of transformer by checking from terminals Xl to X2, Xl to X3, X2 to X3. Resistance must be 1.68 ohms ± 0.168 ohms. Check resistance in control windings by checking from terminals Cl to C2. Resistance must be 9.6 ohms ± 0.96 ohms. If any of the windings do not show the proper resistance, replace transformer. (8) Current Transformer (CT1). On the current transformer (figures 1-1, 6-7.1 and 7, figure 6-9) only the secondary windings can be checked. Using an ohmmeter check resistance in secondary windings by checking from terminals 1A to 2A, lB to 2B, lC to 2C. Resistance must be 0.5 ohms ± 0.05 ohms. If any of the windings do not show the proper resistance, replace transformer. (9) Bridge Rectifier Assembly (A4) (see figure 6-11). Tag and remove leads to terminal board and test each diode (3) separately by checking between terminals (6) shown in table 6-6. Resistance in one direction should be very high in one direction and very low in the other. Measure resistance of R1 (4). It should be 56 ohms. Change 5 6-15