ABB HiPerGuard MV UPS User Manual page 7

Abbreviation/Term
Island state
Line voltage
LV
MV
MVM
PCB
PCC
PCM
PCM_Active state
PCM_Normal state
PCS120
PCU
PE120-N
PEBB
PE-E
PE-I
Resynchronizing state
RTD
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Meaning
A state where the MV UPS decided to go into independent mode by opening
the input circuit breaker and supplying the load through the energy storage.
RMS line to line voltage of the main power supply of the MV UPS input.
Low Voltage. Voltage level up to 1000 Vac or 1500 Vdc.
Medium Voltage. Voltage level between 1 kVac and 35 kVac.
Medium Voltage Magnetics. The MVM consists of the coupling transformer
and the isolating line reactor.
Printed Circuit Board
Point of Common Coupling. The PCC is the point in the electrical power
supply system where the responsibility of the utility changes to the
industrial customer. The utility is responsible for providing clean voltage
and current with respect to harmonic distortion up to the PCC.
The industrial customer is responsible not to distort voltage and current by
its electrical systems
Power Conditioning Mode. When operating on this mode, the MV UPS
continuously conditions the load voltage.
A state where the grid input voltage is out of threshold and the MV UPS is
keeping the load voltage within specified limits while monitoring to decide
whether to disconnect from the grid.
A state where the grid input voltage is within specified limits and the MV
UPS continuously conditions the load voltage to the system nominal voltage
value while the utility is sup-plying the load active power requirements.
Power Conversion System 120. The PCS120 is the product platform for the
ABB power conditioning products.
Power Conversion Unit. The PCU consists of the LV enclosures of the
HiPerGuard MV UPS unit.
Platform Enclosure 120. PE120 is the enclosure that contains several PCS120
modules. The product has three enclosures designated as PE120-1, PE120-2
& PE120-3.
Power Electronic Building Block
Protective Earth
Inverter Earth
A state where the MV UPS resynchronize to the grid input voltage and
commands the input circuit breaker to close when the grid voltage is back
and stable for reconnection.
Resistance Temperature Detector. The RTD is a temperature sensor where
the change in electrical resistance is used to measure the temperature.
AB B RE V IATI ON S & TE RM S
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