Apc DC Power Plant MX28B-1200 User Manual download pdf (Page 20)

MX28B-1200 PRODUCT MANUAL Revision B

14 MX28B-1200/2400

5.1.5 Room/Locations

NOTE: The APC Model MX28B dc power plant is to be installed in a room, vault, or

similar enclosure that is accessible only to qualified persons in accordance with

the NEC or the authority having jurisdiction.

Prior to installation, drawings, floor loading requirements, external alarm points, ac service

entrance, and grounding schemes should all be checked and confirmed. If batteries are to be

mounted in a room separate from the power plant, careful attention should be paid to battery

cable voltage drop effects. Environmental operating temperatures and ventilation/cooling

considerations should also be noted, not just for the power system but for all other equipment

that may reside in the power room area.

5.1.6 Mounting

The box frame housing the MX28B components is self-supporting, but designed to be bolted to

the floor of the housing structure. Figure 5-1 shows the footprint of the box frame and the

mounting points with dimensions (shown in inches). Consult the system design specifications to

see if it is necessary to electrically isolate the frame from the floor structure. This is required in

many installations.

Systems with multiple box frames are mounted with each frame touching, side by side. The side

cover panels where two frames touch are removed so that bus work and control cables can pass

between the frames. Three holes are provided in center vertical rail of each side to allow the

frames to be mechanically secured to each other if desired.

11.50

23.00

11.50

1.50

FRONT

Figure 5-1 Floor Mounting Dimensions

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 53 54

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Apc DC Power Plant MX28B-1200 User Manual Page 20