GE Industrial Solutions SG Series 400 & 500 Operating Manual - Manual (Page 13)

Modifications reserved Page 13/79
OPM_SGS_USM_M40_M50_2US_V010.doc User Manual SG Series 400 & 500 UL S2
4.2 OPERATION MODES
4.2.1 Normal operation mode
During normal operation, the Rectifier converts
input AC power to DC.
The DC power provides input power for the
Inverter and charging power for the Battery.
The Inverter converts the DC power to continuous
and regulated AC power, which supplies the
critical load.
The control panel reports the Battery charge
status and the expected backup time with the
actual load.
Fig. 4.2.1-1 Block diagram normal operation mode
4.2.2 eBoost™ operation mode (option)
eBoost™
e
high efficiency (up to 99%)
Boost fast power transfer (< 4ms)
When the eBoost™ Operation Mode is selected,
and the Utility Power is available, the Load is
normally powered through the Automatic
Bypass.
When the Utility Voltage is detected out of the
prescribed tolerances, the Load is automatically
transferred to the Inverter.
Fig. 4.2.2-1 Energy flow in eBoost™ Operation Mode
When the Utility recovers, the Load returns to the Automatic Bypass after a variable time defined by the
control unit.
The eBoost™ Operation Mode can be configured directly by the user for scheduled activation,
considering the Utility reliability and criticality of the Load.
The selection between the two operation modes “VFI Mode and eBoost™ Operation Mode”, or switching
between operation modes at required time, can be done through the UPS control panel (see Section 7.4
/ eBoost).
NOTE !
The eBoost™ Operation Mode is available only if enabled at the factory or by a GE
GLOBAL SERVICES FIELD ENGINEER.