Liebert EXL S1
PARALLEL CONFIGURATION
User Manual 10H52226UM60 - Rev. 1 - 01/2017
86
7. PARALLEL CONFIGURATION
Up to 8 Liebert EXL S1 units can be connected in parallel to increase power capacity and thus to
provide more secure power to the load (redundancy).
The modules in parallel exchange information via a 37-wire shielded cable.
The total load current is shared between the modules.
For optimum performance of the parallel system and proper current sharing, especially in the Bypass
mode, make sure that the series impedance of the modules in parallel is the same.
The cross section and length of the power cables used to connect the inputs of each UPS module must
be the same. The same applies to the output cables and the battery cables, if the modules are
connected to the same DC source.
Differences of 20% are allowed for power cable lengths of up to 20m. For larger distances, cable
lengths may not vary by more than 10%.
For parallel connection between 80-NET and Liebert EXL S1, use the Parallel kit - adapter option (para
8.9. on page
98
) and see below:
Figure
48
- Parallel connection between 80-NET and Liebert EXL S1
7.1. Placement into service
Placement into service of multiple-block systems must be carried out by appropriately trained
technicians.
7.2. System configurations
Fig.
49
and Fig.
50
illustrate the schematic diagram of a multiple-block system with SBS in various
configurations. Contact Vertiv Technical Support for more information. The SBS shown in the
diagrams may be installed in Liebert EXL S1 parallel systems where standard, 400V units are installed.
80-NET
Liebert EXL S1
XP19A XP19B
XP19A XP19B
XP19A XP19B
Parallel kit
Adapter
Parallel kit
Adapter
Liebert EXL S1
Summary of Contents for Liebert EXL
Page 1: ...Liebert EXL User Manual...
Page 2: ...Liebert EXL UNINTERRUPTIBLE POWER SUPPLY USER MANUAL 10H52226UM60 rev 1...
Page 7: ...Liebert EXL S1 6 User Manual 10H52226UM60 Rev 1 01 2017...
Page 36: ...Preparation For Use Liebert EXL S1 35 User Manual 10H52226UM60 Rev 1 01 2017 BLANK PAGE...
Page 74: ...CONNECTIVITY PANELS Liebert EXL S1 73 User Manual 10H52226UM60 Rev 1 01 2017 BLANK PAGE...
Page 84: ...Normal and safe operation Liebert EXL S1 83 User Manual 10H52226UM60 Rev 1 01 2017 BLANK PAGE...
Page 86: ...Maintenance Liebert EXL S1 85 User Manual 10H52226UM60 Rev 1 01 2017 BLANK PAGE...
Page 94: ...PARALLEL CONFIGURATION Liebert EXL S1 93 User Manual 10H52226UM60 Rev 1 01 2017 BLANK PAGE...
Page 102: ...Options Liebert EXL S1 101 User Manual 10H52226UM60 Rev 1 01 2017 BLANK PAGE...