Liebert 130 kVA - Manual (Page 25)

User Manual
Hipulse - Single Phase ‘1+N’ UPS System 130 kVA - 110V
5
WARNING
In ECOMODE the load is not protected against mains distortion.
1.2.5 UPS Power Switch Configuration
Figure 1-2 illustrates the Hipulse UPS module in what is known as the "Split Bypass"
configuration. In the Split Bypass configuration, the static bypass line is connected by
a separate power switch to a dedicated 'bypass' power source which also feeds the
maintenance bypass line. Where a separate power source is not available the Bypass
(Q2) and Rectifier input supply connections would be linked together.
With the exception of maintenance bypass isolator, all the isolators shown must be
closed during normal UPS operation.
1.2.6 Battery circuit breaker
The battery should be connected to the d.c. busbar through a circuit breaker fitted
inside the battery cabinet or located adjacent to batteries where a battery cabinet is
not used. This circuit breaker is closed manually, but it contains an undervoltage
release coil which enables it to be tripped from the UPS control electronics following
certain detected faults. It also has a magnetic trip facility for overload protection.
1.2.7 Battery temperature compensation
Hipulse UPS System offers a battery temperature compensation circuit. As the
temperature inside the battery cabinet area rises, the d.c. busbar voltage reduces in
order to sustain the battery at its optimum charge voltage. This must be used in
conjunction with the battery sensor board.
1.2.8 System Expansion
If necessary, a single -module system can be expanded to cater for an increased load
requirement by adding additional modules - upto a maximum of six UPS modules can
be connected in parallel. System expansion requires change in the SETUP of the
display panel.
Note: System expansion should be carried out only by trained service personal. The individual
modules connected to the system must be of the same power rating