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TLE Scalable Series 40 to 150 UL S1
UPS Installation Guide / REV-B
4.8.4
Use of TLE Scalable Series 40 to 150 in SEM Operation Mode (Super Eco Mode)
Note!
For systems intended to be operated in SEM Operation Mode, the installation shall be protected
with suitable surge protection devices (SPDs) on the AC bus feeding the UPSs.
Please contact your ABB Service Centre for more information.
Note!
In SEM Operation Mode the Inverter output filter is placed in parallel with the Load and combined
with the Load current it contributes to the UPS input characteristic.
As the Inverter output filter exhibits a predominantly capacitive characteristic, it may provide
some degree of reactive power compensation when combined with lagging power factor loads.
Conversely, depending on the load type and level, the UPS input characteristic may exhibit a leading
power factor in SEM Operation Mode.
Please contact your ABB Service Centre for more information.
Note!
If an emergency generator set supplies the UPS in case of Utility Failure and the system is intended
to be operated in SEM Operation Mode, SEM operation shall be prevented during generator
operation.
This can be accomplished by either installing a “GENERATOR ON” signal (refer to Section 5.2.5) or
an “SEM/IEMi CONTROL” signal (refer to Section 5.2.7).
Please contact your ABB Service Centre for more information.
