Emerson 225-600KVA installation manual Cable Entry, Power Connection

Battery Installation

Figure 4 Stand-alone battery cabinets, detached from UPS

The junction cabinet provides sufficient conduit landing space and is required for all systems in this configuration.

Liebert

NX

UPS

Additional

Liebert

NX

Battery

Cabinet

Stand-

Alone

Junction

Cabinet

Liebert

NX

Battery

Cabinet

Liebert

NX

Battery

Cabinet

Stand-

Alone

Junction

Cabinet

Additional

Liebert

NX

Battery

Cabinet

Liebert

NX

UPS

2.3Cable Entry

Cables may enter the battery cabinet from the top or bottom. Cable entry is made possible by installing conduit to the removable plate fitted at the top or bottom. See 3.0 - Installation Drawings.

2.4Power Connection

Depending on the site layout, the battery cabinets can be cabled several ways. See Figures 2 through 4.

! CAUTION

Cables between batteries and the UPS should be run in matched pairs, positive-with- negative, within each conduit or cable run.

Grouping like-polarity cables together (i.e., positive-with-positive and negative-with-negative) can cause stress or damage to the cables, conduit or buswork

2.4.1Connected System

For cabinets ordered as connected (battery cabinets will bolt to each other), the positive and negative busbars are connected between battery cabinets with the supplied busbar connector extensions. See

Figure 17

2.4.2Stand-Alone System

For cabinets that are ordered as stand-alone, customer must supply all the interconnecting cables and hardware. See Table 8 for current ratings and recommended cable sizes.

2.4.3Attached/Detached System

For battery cabinets that are connecting to a Liebert NX UPS, or Liebert NX Junction Cabinet (see Figures 2 through 3), cables will run from the positive and negative busbars of the adjacent battery cabinet to the positive and negative DC connections of UPS or Junction Cabinet.

Liebert® NX™ 8