Figure 6-7. AC Output Control Box Test Setup

TM 5-6115-584-34 NAVFAC P-8-622-34 TO-35C2-3-456-2 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 hinges, covers, and latches operate properly. Check that all nameplates are in place. Check that side access cover is always in place when box is not 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 continui- ty 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 positions. (3) 15 Amp Circuit Breaker (CB3). Test that breaker will remain in both the set (pushed) and trip- ped (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 cir- cuit breaker pushed in, 120 volts should be present at the receptacle. (5) Linear Reactor (L1). Disconnect electrical connectors from control box. Use an ohmmeter to check 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 ± O.227 ohms. Check resistance in three secondary windings of transformer by checking from terminals X1 to X2, X1 to X3, X2 to X3. Resistance must be 1.68 ohms ±0.168 ohms. Check resistance in control windings by checking from terminals C1 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, 1B to 2B, 1C 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 to each diode (3) separately by checking between ter- minals (6) shown in table 6-6. Resistance in one direc- tion 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