APC MX28B-2400, MX28B-1200 Rectifier Installation, Multiple Frame Assembly Power Bus Connections

MX28B-1200 PRODUCT MANUAL Revision B

5.5Rectifier Installation

The APC Model MRF28H54BV rectifiers are shipped in separate containers. Follow the procedure below to install a rectifier.

1)Remove the rectifier from its shipping container.

2)Remove the rectifier retaining screw from the shelf position where the rectifier is to be installed.

3)Slide the rectifier into the shelf between the guides until it is fully seated.

4)Fasten the rectifier in place with the rectifier retaining screw.

Since all adjustments are made from the system control unit, no rectifier adjustments are necessary.

NOTE: All “FLOAT” – “BOOST/EQUALISE” switches (one is located on the front of each rectifier in the system) must be set to “FLOAT” to allow the MX28B to control the output voltage properly.

5.6 Multiple Frame Assembly

5.6.1 Power Bus Connections

Installations with multiple box frames requires splicing of the power buses. The MX28B-1200 / 2400 family of power systems and distribution bays are designed so that the power buses can be connected from bay to bay through the use of simple splice plates. Figure 5-5 shows the connection between two box frames for the normal 2500 amp bus work.

Splice Plates

Figure 5-5 Multi-Bay Splice Plates

18 MX28B-1200/2400