Options
Liebert EXL S1
99
User Manual 10H52226UM60 - Rev. 1 - 01/2017
Once the main power (reserve inputs) shall fail, each UPS will synchronize the inverter to the signal
coming from the MBSM (Fref.) and, as a result, the inverters are still in synchronism.
Shall be the Fref. not available (or the MBSM not installed), each UPS will synchronize the local
internal quartz, therefore the inverters outputs would be, in this case, asynchronous.
It is than clear that the MBSM has a simple PASSIVE rule in relation to the UPS. The UPS will decide
with maximum independence the source of Synchronization on the base of the following priority scale:
HIGHEST PRIORITY = LOCAL RESERVE INPUT
MEDIUM PRIORITY = MBSM REFERENCE
LOWEST PRIORITY = LOCAL QUARTZ OSCILLATOR
For installations and operations please consult the User Manual MBSM
8.7. Synchronization box for UPS
This device has been designed for use in complex power source systems, consisting of different
distributions and CROSS switches supplied by Vertiv and other manufacturers. It provides
Synchronization between Vertiv Trinergy
TM
Cube, 80-NET, 80-
e
XL, Liebert EXL S1 and 90-NET UPS
and third party systems, when it cannot be guaranteed by the system configuration or when
temporary conditions prevent it (e.g. during battery operation).
Examples of configurations where the External Sync. Box can be used:
• Installation consisting of two Vertiv systems;
• Installation consisting of Vertiv systems and electrical generating devices;
• Installation consisting of Vertiv and third party systems.
The device operates by identifying one of the connected units as the Master and using its frequency
as a reference for the other units (Slaves). While other brand UPS can be used as the Master, only
Vertiv UPS can be used as Slave units.
Depending on their configuration, the Slave units will follow the reference frequency all the time, or
only when their reserve mains supply is out of tolerance.
The reference frequency will be generated only when the Master mains supply line is within
acceptable limits.
The device can drive up to two separate units, which may be independent of one another, or
connected together in a parallel system: where the installation consists of more than two Slave units,
or the Master/Slave configuration is not the preferred option we advise using Vertiv MBSM.
For installations and operations please consult the User Manual Synchronization Box.
8.8. SBS
This option must be installed in parallel systems comprising more than two UPS and it allows doing
maintenance to the system maintaining continuity (the rating available are 400A, 800A, 1600A and
2500A).
8.9. Parallel kit - adapter (Liebert EXL S1 to legacy 80-NET)
It is used for parallel connection between Liebert EXL S1 and 80-NET, because of different connectors
installed.
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...