ABB HiPerGuard MV UPS - Abbreviations and Terms; Glossary of Terms

ABBREVIATIONS & TERMS
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Abbreviations & Terms
The following table lists terms and abbreviations users should be familiar with when using this manual.
Some of the terms and abbreviations used in the manual are unique to ABB and might differ from the
common use.
Abbreviation/Term Meaning
APS
Auxiliary Power Supply. APS is an enclosure that contains the MV UPS
switched-mode power supplies, remote input/output modules, control
circuits and auxiliary transformers.
Bypass isolate state
A state where the MV UPS is not operating, input and output breakers are
opened, and the automatic bypass breaker is closed.
Bypass mode
The term is used to describe the system in bypass (not operating). When in
bypass mode, the bypass breaker is closed, and the input and output
breakers are opened.
CXF
Coupling Transformer. CXF is a transformer that couples the medium
voltage network to the low voltage power converters.
DCT
Direct Current Termination. DCT is an enclosure where the energy storage
cables are terminated and connected to the MV UPS PE120 cabinets.
EMC
Electromagnetic Compatibility. All measures to suppress electromagnetic
disturbances caused by different electrical equipment in the same
electromagnetic environment, and to strengthen the immunity of the
equipment to such disturbances.
EOA
End of Autonomy. EOA refers to the end of the specified back-up autonomy
time of the energy storage.
EOD
End of Discharge. EOD refers to the state of energy storage when it is fully
depleted.
GDM
Graphical Display Module. Has the local Human Machine Interface (HMI) and
it is located in the PE120-1 enclosure.
HUB
Two HUB controllers are located in PE120-2 and PE120-3 cabinets
respectively. The main function is to transfer the information to the system
controller.
ILR
Isolating Line Reactor. ILR is a medium voltage impedance connected in
series, between the grid and the load.
IM
Independent Mode. When operating on this mode, the MV UPS disconnects
from the grid by opening the input circuit breaker and supplies the load
through the energy storage.