KGK Series UPS
Transformer based Online Double Conversion
Uninterruptible Power Supply
High 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 6 IGBT modules with switching at 20kHz 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..
Features at a Glance
  • On-line double conversion system with output galvanic isolation transformer
  • Greater than 3:1 crest factor (10 seconds at full load) for non-sinusoidal loads
  • Programmable battery test
  • High frequency IGBT switching with PWM inverter, full bridge, three phase control
  • Double way static and manual by-pass
  • Controlled with microprocessors
  • Stand-by operation for energy saving
  • Self-test and service through modem
  • 2x16 character LCD display with back light and buzzer
  • Low audible noise level by smart fan controlling system
  • Paralel operation capability (Optional)
  • Remote control and controlling panel (Optional)
  • Communication at all network systems with RS-232 interface (Optional)

Extended Battery Life
GESS transformer based, line interactive online UPS systems provide longer operational efficiency as transformer-less UPS systems bring operational risks and downtime due to malfunction especially for industrial uses where voltage transients, created by a degraded mains supply, can seriously damage both UPS and the load. For 3/3 systems, each phase is controlled independently and this capability provides three phase systems smoother operation.

Environmentally Friendly
GESS online UPS systems have a modular architecture, meaning that they're built with a number of electronic cards to control each unit instead of a large, single motherboard; thus it would be enough to replace the that particular PCB to fix the device in case of a failure. It can be translated into significantly lower spare part cost and shorter maintenance time.

Technical SpecificationsTransformer Based System Benefits

Block Schema
High Performance at Nonlinear Loads
Inverter output encompasses 6 IGBT modules, boosting the instant power capacity of GESS Online UPS systems by double fold with comparison to regular systems. This feature allows GESS to handle higher capacity loads (inrush currents) with smaller capacity devices. In addition, switching at high frequency - 20 KHz. - keeps the output sin wave (THD) undistorted providing reliable solutions for nonlinear loads.
Longterm Operational Efficency

GESS transformer based, double conversion online UPS systems provide longer operational efficiency as transformer-less UPS systems bring operational risks and downtime due to malfunction especially for industrial uses where voltage transients, created by degraded mains supply, can seriously damage both UPS and the load. For 3/3 systems, each phase is controlled independently and this capability provides three phase systems smoother operation.
Low Maintenance Time & Cost

GESS online UPS systems have a modular architecture, meaning that they're built with a number of electronic cards to control each unit instead of a large, single motherboard; thus it would be enough to replace particular PCB to fix the device in case of a failure. It can be translated into significantly lower spare part cost and shorter maintenance time..
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.