Use pressure and bus bar terminations as necessary for connecting cables between the UPS and battery cabinets. Use pressure and bus bar terminations as necessary for connecting cables between the UPS and battery cabinets. Remove the battery cabinet top or bottom conduit landing plate to drill or punch conduit holes (see Figure 4-6).
Open-rack battery rooms must be adjacent to the UPS room. Battery cabinets must be adjacent to the UPS equipment. Cable lengths from multiple cabinets should be kept as nearly identical as possible to prevent voltage drop variations. One cabinet should be able to hold at least one complete string of cells.
The recommended installation location for battery cabinets located adjacent to the UPS is on the right side of the UPS cabinet. This location will allow for future expansion using an external module. The battery cabinet is bolted to a pallet consisting of four angle metal supports secured to two four-inch by six-inch wood supports.
The battery cabinet frame is not referenced to the DC circuit. Battery voltage is computed at 2 volts per cell as defined by Article 480 of the NEC. Rated battery current is computed at 2 volts per cell. The battery wiring used between the battery and the UPS should not allow a voltage drop of more than 2 VDC at rated battery current.
Plate material is 16 gauge steel (1.5 mm/0.06” thick). The recommended installation location for battery cabinets located adjacent to the UPS is on the right side of the UPS cabinet. This location will allow for future expansion using an external module.
For example, a battery cabinet contains 16 pcs of 12V battery, and all of them connect in series, the nominal voltage of this battery cabinet is 192Vdc. It would match the UPS which should connect 16 pcs of battery, battery voltage 192Vdc or charging voltage 218.4.