Emerson MPR25, MPR15 Series user manual Procedure 11 - Rectifier power-up, Step

Installation and start-up procedures 61

Rectifier power-up

If the factory set voltage limits need to be modified or verified, open the sense leads of all the rectifier positions to be turned on:

•by disconnecting a quick disconnect tab of TB-1 on the power shelf

or

•by removing the controller sense fuse (system application) or

•by setting the dip switches to the OFF position (system application)

Then refer to the appropriate section for Float Voltage, HVSD or Equalize adjustments (see User Manual 167-7011-010 Voltage Level Limits for Power Plants, Rectifiers and Controllers).

If no change is needed continue with the parallel verification procedure.

Note: Quick disconnect tab TB1 is located on the right end side of the shelf and can be accessed by removing the front cover (see Figure 24). For system applications, refer to the appropriate system procedure guide for the fuse or dip switch location.

Procedure 11 - Rectifier power-up

Step Action

1Verify that the DC and AC rectifier circuit breakers are in the OFF position.

2If no change is needed continue with the “Parallel verification” procedure found further in this chapter.

3Turn ON the main AC feed.

4Turn ON the AC circuit breaker of one rectifier; the rectifier will provide voltage on the front panel test point terminals.

–end–

Note: If the rectifier does not provide voltage, check inrush fuse F1. If the no voltage status remains, refer to the appropriate troubleshooting section.

25A Switch Mode Rectifier NT5C06B / C Installation and User Manual