Mm Cabinet (250 Amp Circuit Breaker) - Liebert 7400 Series User Manual

7400 Series UPS User Manual
Single Module and One plus One Systems
3.5.1 860 mm cabinet
(250 Amp circuit
breaker)
6310018a.02.doc
The 860 mm cabinet with a 250 Amp circuit breaker and extension
cabinets are designed for use with the Series 7400 80-120 kVA UPS.
The 860mm battery battery cabinet autonomy time can be extended by
attaching a 320mm wide extension cabinet part N°5320025J to the main
cabinet.
All cabinets are secured and bonded together using the bolts supplied
and the holes proved in the cabinet side struts.
A typical battery layout for a single cabinet is shown in figure 3-13, this
can be extended by using extension cabinets attached to the basic unit.
Each extension cabinet is supplied without side covers, as the covers
from the basic unit are then used. This side access allows batteries to be
positioned from either the front or side.
As many different battery combinations can be used only the connections
for the basic unit have been shown in figure 3-13, additional battery
strings can be added and would be connected in parallel.
The battery cabinets are designed to hold between 32 and 34 batteries on
4 levels, free standing on adjustable rails. Nine batteries can be fitted to
the 3 upper levels with up to seven batteries on the lower level. The rails
are adjustable giving a maximum battery width of 176mm and a
maximum depth of 270mm, this allows batteries to be positioned as
shown or turned through 90°. The rails can also be removed or re-
positioned to accommodate batteries of different sizes.
Figure 3-14 shows an alternative arrangement to that above. In this
example larger capacity batteries are used. As can be seen, the rails have
been adjusted and removed to accommodate the larger battery of which
only sixteen can be fitted within the cabinet. The other sixteen batteries
(needed to maintain a 432 V d.c. bus bar) are arranged within an
extended battery cabinet and connected in series to the main cabinet
batteries. Further pairs of extended battery cabinets can be added in
parallel.
The basic cabinet is supplied with the battery circuit breaker and
interface board. Connection to the UPS is shown in figure 3-13.
Due to the flexibility of the type and size of cells that can be used in this
installation it would be impracticable to provide specific installation
instructions. However as a general guide:-
Always install the batteries starting from the bottom and work
upwards.
Leave the end links marked (B) see figure 3-13 until the last
connection on each level.
After each connection is made fit the insulation shroud for that
terminal into position.
As an added safety precaution we suggest that link (A) see figure 3-
13 is left disconnected until all batteries are fitted. Once all the
batteries are fitted connect link (A).
Please refer to the battery manufacturers instructions and the drawings
supplied with the module for safety and specific installation instructions.
Chapter 3 - Installation Procedure
Battery Installation
(02/98) LCA 10/01
3-25
Issue 2