Performance Characteristics
Energy E ffi ciency
UPS System E ffi ciency
( 500 k VA units operating at 50% and 100% load) The
GESGS eries is the most energy e ffi cient double conversion 950%100%
UPS in the industry and provides world-classenergy e GE 94.4%93.8% ffi ciency across the operating load range. Competitor A 91.5%92.0%
SG Series energy e ffi ciency is optimized for partial loadoperation and actually improves at part load operation.
Most Competitor B 92.9%93.0%
UPS systems operate at part loads, not at full load,therefore the
UPS performance should be optimized andevaluated at part load operation.The optimization of the Competitor C 94.0%94.0%
SGS eries includes an input fi ltertunedfor part load operation and lower
industrial inverter switching
losses through space vector modulation
inverter control.
Output Performance
Total Harmonic Distortion (THD)
A distorted output voltage waveform effects the proper functionof the load’s equipment. The
Input Performance
GEUPS has very low output voltage
THD , even with 100
% unbalanced or 100
% non-linear loads.
Robust Recti fi er for Wide Input Range Transient Response
The wide AC input voltage and frequency window avoidsunnecessary battery discharge even when operating from
an unstable AC source (i.e.
diesel generator). With the use of
SVM the
GEUPS can react very quickly tozero- 100
% step loads (within 1/3 cycle). This reduces theneed to oversize the UPS for severe pulse-load applications.
Programmable Soft Start Feature
0-30 seconds) eliminating in-rush current. Thisfeature reduces the need of oversizing the input power
system (gen sets, feeder cables, overcurrent devices).
Allows the rectifier to ramp up in a programmable time
period (
SVM enables the inverter to react very quickly under stepload conditions. As a result, the
GEUPS has very tight voltageregulation during step loads and 100
% phase-to-neutral(Ph-N) load imbalances.
Smart Input Filter Overload Capability on Inverter
GE offers an optional internal input filter with the
SGS eries
UPS . This “smart” filter has a programmable feature thatallows the filter to be switched off during start-up and low
load conditions, improving e ffi ciency and input power factor. The
GEUPS has increased reliability due to overload andshort circuit withstand ability of the inverter. During severe
overloads or short circuits the
UPS will transfer to bypassbefore destruction of the inverter.
Generator Compatibility
Output Performance Benchmark to the Competition Programmable features such as slew rate, phase anglerate-of-change and voltage rate-of-change allow the
UPS What is Condition GE Top 3 Competitors Better? to quickly sync to a genset during emergency back-up.
GE ’soptional input filter also has programmable features ensuring
quick and continuous synchronization to generator voltage.
A B C Energy E ffi ciency (500kVA @ 50% Load) 94.4% 91.5% 92.9% 94.0% More Generator Friendly Voltage THD w/Linear Load < 2% 2% 4% 3% 2% Less GE PerformanceCompetition Voltage THD w/Non-linear Load <2% 2% 5% 5% 3% Less Overload Capability 150% > 1 min 60 S 30 s 10 s 10 s More +10%60 Hz-10%-20% 480 VAC +15% Voltage Transient Deviation for 100% Load Step < 3% 3% 5% 5% 5% Less Unbalanced Voltage Regulation 2% 3% 3% 3% Less GE PerformanceCompetition InputVoltage
InputFrequency 3