Liebert 130 kVA - Manual (Page 33)

User Manual
Hipulse - Single Phase ‘1+N’ UPS System 130 kVA - 110V
13
CHAPTER 3
Installation (Electrical)
The UPS requires both “Power” and “Control” cabling once it has been mechanically
installed. All Control cables, whether screened or not, should be run separate from
the Power cables in metal conduits or metal ducts which are electrically bonded to the
metalwork of the cabinets to which they are connected.
3.1 Power Cabling
WARNING
Before cabling-up the UPS, ensure that you are aware of the location
and operation of the external isolators that connect the UPS input/
bypass supply to the mains distribution panel.
Check that these supplies are electrically isolated, and post any
necessary warning signs to prevent their inadvertent operation.
For cable entry, refer to section 2.3.5
3.1.1 System Configuration
The power cables of the system must be size with respect to the following description:
Module input cables
The module input cables must be sized for the maximum input current, including the
maximum battery recharge current, given in the table 3-1, with respect to the module
rating and the input a.c. voltage.
Module Bypass and Output cables
The Bypass and Output cables must be sized for the nominal output current, given in
the table 3.1, with respect to the module rating and the output a.c. voltage.
Battery cables
Each UPS module has its own battery, which is connected using two cables, one
positive and one negative. The battery cables must be sized for the battery discharge
current at the end-of-discharge voltage, as given in the table 3-1, with respect to the
module rating.