KGS Series UPS
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10 Transformer Based Online Double Conversion Uninterruptible Power Supply KGK Series UPS Hig h Protection Online Double Conversation UPS systems are ideal for the protection of the mission critical processes with its transformer based architecture. The inverter topology uses 3 full-bridge IGBT inverter with ideal isolation transformer at 20kHz switching frequency; so for the non-linear and reactive loads the output waveform has no distortion. For the output, two mechanical contactors are used with thyristor switch with no break transfer time so the load is always secure. KGK Series UPS Low...

11 Serves to Wide Range of Markets GESS Online Double Conversion UPS systems address to ever increasing needs of various markets including IT, telecom, defense, finance and health care. They can be connected to any type of load as well as to diesel generators since the rectifier current capability is well to charge any type of battery unit at desired charging current. Environmentaly Friendly Low audible noise level (less than 60 db. at 1 m. distance) is secured by a smart fan controlling system. GESS Uninterruptible Power Supply systems are also able to work between -10 / +50 degrees...

12 Uninterruptible Power Supply KGK Series UPS KGK Series UPS GENERAL Model 1-1 PHASE / 1, 2, 3, 4, 5, 6, 7.5, 10, 15, 20kVA 3-1 PHASE / 10, 15, 20, 30, 40, 60 kVA 3-3 PHASE / 10, 15, 20, 30, 40, 60, 80, 100, 125, 160, 200 kVA Topology Double Conversion Online System with Output Isolation Transformer Control RISC Microprocessor Controlled RECTIFIER Topology Full Bridge Phase Angle Controlled Thyristor Module Rectifier 6-Pulse Phase Angle Controlled Thyristor Module Rectifier Optional 12 pulse Phase Angle Controlled Thyristor Module Rectifier Control RISC Microprocessor Controlled System...

13 KGK Series UPS Nominal Output Frequency while synchronized with the line while not synchronized with the line 50 hz ±2% 50 hz ± 0.1% Switching Frequency 20 KHz. Efficiency with Nominal Load >88% >90% >92% Transformer Galvanically isolated Short-circuit behaviour: 4 x Nominal Output Current Protection Short Circuit Protection, Over Voltage Protection, Over Current Protection and Over Temperature Protection STATIC BY-PASS Topology Uninterruptible static switch with back-feed protection Bypass System No break semiconductor thyristor Nominal Voltage 220 / 230 VAC ± 10% 380 - 400 VAC ± 10%...

14 Transformer-based GESS UPS Transformer-less UPS Load Security against mains failure Load is fully isolated with galvanic transformer. Therefore, in circumstances where the load is likely to be affected by a very large variation in its power supply, a transformer-based UPS provides a safer and more robust solution than transformerless technology simply because its size and construction afford some inertia between the input and output waveforms, with no additional electronic filtering required No isolation between load and mains. Susceptible to interference from spikes and transients...

15 T R A N S F O R M E R Transformer-based GESS UPS Transformer-less UPS Battery Efficiency Unlike transformer-less systems, transformer based online UPS systems use fewer number of battery sets to feed the load due to its unique architecture. Therefore battery sets get charged evenly and at optimum rates to maximize the battery life time and reduce long term battery replacement cost Transformer-less systems have to use almost two times more battery sets to form the sin wave due to their inverter architecture. Large number of battery sets can not be charged evenly and this shortens the...

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