
8 Contents 
UM5C05C P0745680 Standard 6.00 October 2001 Emerson Energy Systems 
6. Maintenance................................................................................................. 49 
6.1. Replacing the air filter ................................................................................ 49 
6.2. Replacing the fan unit ................................................................................ 49 
6.3. Calibrating the Volt / Amp Multimeter......................................................... 50 
6.4. Resetting the rectifier after an HVSD ( high voltage shutdown )................ 51 
7. Troubleshooting.......................................................................................... 53 
 
8. Appendix A : Replacement parts ............................................................... 55 
 
9. Appendix B : Technical service assistance.............................................. 57 
9.1. Local toll-free prefixes................................................................................ 57 
9.2. Toll-free technical assistance numbers...................................................... 58 
10. Abbreviations and acronyms ..................................................................... 59 
 
List of Figures 
Figure 1 - Front view of the modular 200I / 48 switch mode rectifier................... 11 
Figure 2 - Typical mounting in a cabinet or frame................................................ 12 
Figure 3 - Anchoring the cabinet.......................................................................... 21 
Figure 4 - Installing the rectifier............................................................................ 22 
Figure 5 - Connecting the dc to the busbars with a shunt on the battery 
side or a shunt on the ground side ...................................................... 23 
Figure 6 - Cabling ac the NT5C05CA / CB rectifiers............................................ 26 
Figure 7 - Connect the power leads to the L1, L2 and L3 terminals of the 
rectifier................................................................................................. 26 
Figure 8 - Connecting ac to the rectifier NT5C05CC........................................... 27 
Figure 9 - Typical connections between rectifiers and the conventional 
controller.............................................................................................. 28 
Figure 10 - Front panel controls and LEDs.......................................................... 33 
Figure 11 - Replacing the fan unit........................................................................ 49 
 
List of Tables 
Table 1 - Mechanical specifications of the rectifier.............................................. 13 
Table 2 - Electrical specifications of the rectifier.................................................. 13 
Table 3 - Operation specifications of the rectifier ................................................14 
Table 4 - Ambient conditions for the rectifier ....................................................... 15 
Table 5 - Mechanical specifications of the NT6C43CB 1200 A cabinet ..............16 
Table 6 - Electrical specifications of the NT6C43CB........................................... 16 
Table 7 - Ambient conditions for the NT6C43CB 1200 A cabinet........................ 16 
Table 8 - Pin assignment for connectors J7 to J12.............................................. 29 
Table 9 - Pin assignment for connector J13........................................................ 30 
Table 10 - Designation of the LEDs on the front panel........................................34 
Table 11 - Adjusting the potentiometers and switches ........................................36 
Table 12 - Rectifier input / output signals to the controller................................... 36 
Table 13 - Setting the start-up delay.................................................................... 41 
Table 14 - Control signal connections on P1 ....................................................... 42 
Table 15 - Standard settings for the rectifier........................................................ 45 
Table 16 - Diagnosing system faults.................................................................... 53 
 
List of Procedures 
Procedure 1 - Installing the rectifier in a frame.................................................... 20 
Procedure 2 - Installing a rectifier in a cabinet..................................................... 21 
Procedure 3 - Securing the dc output terminals to the busbars of the cabinet.... 24 
Procedure 4 - Typical dc cabling in a frame application ......................................24 
Procedure 5 - Cabling the ac input to the NT5C05CA / CB rectifiers ..................25