Liebert 130 kVA - Manual (Page 85)

User Manual
Hipulse - Single Phase ‘1+N’ UPS System 130 kVA - 110V
65
8.2 Installation procedure
8.2.1
Preliminary Checks
Be sure that a parallel kit is present and fitted in each of the modules, and that the
modules are of the same rating and with the same software and hardware release
(see section 4.1.2 – Info window)
WARNING
Fitting of the parallel kits and board setting required to convert from
Single Module to 1+N must be made by qualified and trained
personnel. This operation involves also setting of system with
separate batteries or common batteries.
8.2.2
Protective Devices
Refer to the instructions supplied in Chapter 3 – Electrical Installation - Section 3.1.6.
8.2.3
Power Cables
Input Bypass and Rectifier, outputs of module as described in Chapter 3.
8.2.4
Control Cables
Inter-module control
Modules are connected as shown in figure 8-3 using connected the other via Parallel
Connector Board with shielded 34-way cables.
These cables are connected between the ‘N’ modules to pass control signals which
govern module synchronization, load sharing, battery charge current sharing (in a
common battery installation), load transfer operation and other general control and
alarm functions. These signals are necessary to ensure correct system operation,
and built-in redundancy allows the system to function if ever one of the ‘N’ cables
becomes disconnected.
Cables entry is as identified in the mechanical drawings in Chapter 2.
X3
X1
X2
Parallel
Connect.
Board
UPS Module 1
To Parallel PCB
X3
X1
X2
Parallel
Connect.
Board
UPS Module 2
To Parallel PCB
X3
X1
X2
Parallel
Connect.
Board
To Parallel PCB
X3
X1
X2
Parallel
Connect.
Board
To Parallel PCB
X3
X1
X2
Parallel
Connect.
Board
To Parallel PCB
X3
X1
X2
Parallel
Connect.
Board
To Parallel PCB
UPS Module 3 UPS Module 4 UPS Module 5 UPS Module 6
Fig 8-2: Connection of '1+N' system parallel single bus cables