GESS Industrial UPS System. Overview

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1 GESS Industrial UPS System Overview

2 Industrial UPS System Rectifier with Isolation Transformer Inverter with Isolation Transformer By-pass line Voltage Stabilizer with Isolation Transformer > Individual Control panels for each unit > AC & DC Distributions > Optional Redundant Rectifiers > Optional Redundant Inverters via Static Transfer Switch

3 Operation Modes MECHANICAL BY-PASS CONTROL PANEL ISOLATION Tr. ISOLATION Tr. BY-PASS CONTROL PANEL AC INPUT BY-PASS LINE STABILIZER CONTROL PANEL CONTROL PANEL STATIC TRANSFER SWITCH INVERTER AC OUPUT DISTRIBUTION INPUT RECTIFIER ISOLATION Tr. AC INPUT LINE RECTIFIER RECTIFIER INVERTER BATTERY INVERTER ISOLATION Tr. BATTERY GROUP DC OUPUT DISTRIBUTION

4 Basic Technical Data RECTIFIER BY-PASS INVERTER LINE STABILIZER (optional at bypass) Input Voltage DC Output 110 / 220 VDC ± 1 % Type Input Voltage Frequency Transfer Time Output Voltage Type Output Voltage Correction Speed Type 380V/400V/415V±15% 3 Phase (220V/230V/ 240V, 1 Phase) 6 or 12 Pulse thyristor controlled rectifier with input isolation transformer 380V/400V/415V±15% 3 Phase (220V/230V/ 240V, 1 Phase) with isolation transformer 50 Hz ± 5 % ( same as inverter output) Bypass to inverter < 5 miliseconds, inverter to bypass < 5 miliseconds 380V/400V/415V±1% 3 Phase (220V/ 230V /240V, 1 Phase) Pulse width Modulation PWM using IGBT modules with output isolation transformer 380V/400V/415V±2% 3 Phase (220V/230V / 240V 1 Phase) 100 V / sec or 500 V/sec Automatic servo controlled or Static Type STATIC Input Voltage 380V/400V/415V±15% 3 Phase (220V/230V/ 240V, 1 Phase) TRANSFER SWITCH Transfer Time Bypass to inverter < 5 miliseconds, inverter to bypass < 5 miliseconds

5 KGK kva 20 kva KGK kva 60 kva KGK kva 200 kva

6 Overall Features Transformer-Based System Load Security against mains, battery and rectifier failure Higher Battery Efficiency Lower Maintenance Cost No need for extra filtration

7 Multiple electronic cards instead of a single mother board Lower maintenance cost Each phase controlled independently Double way static and manuel by-pass >90 output efficiency Due to these feature, the KGK is: Overall Features Modular Design Flexible and customizable. Easy to access, maintain, troubleshoot, and service.

8 6 Pulse or 12 Pulse For 6 Pulse, power factor >0.8, THDI <25-30 % For 12 Pulse, power factor >0.9, THDI <10 % Microprocessor based digital controller, enables precise dc regulation, and fast dynamic response Wide operating AC input voltage range Low DC-ripple voltage <0.5% LC Filter at the output DC regulation +/-1 % Enables the charging of external larger batteries

9 Soft Start Feature No inrush current at start up AC Ripple at full load < 0,5% Battery life is extended significantly via low ripple voltage due to low heat

10 Fully microprocessor controlled rectifier Thyristor angle is adjusted with load change ½ Load phase angle shortened Full Load phase angle at max

11 +5% 300msec Dynamic Response In sudden load changes dynamic response is 300msec without overshoot or undershoot in order to secure the load -5% 300msec With this capability rectifier can be used as a power supply even without battery safely with DC Loads

12 Boost Charge V (Voltage) 14,5 Battery Full Float Charge 13,6 Nominal 12,0 60A Battery Empty I (Current)

13 Battery charger gives 3 status information : Mains : If mains switch closes or fails Battery : If battery switch closes or fails Load : If load switch closes or fails In all three cases: Warning light on front panel turns on and also warning relay leaves the contact and gives a contact information. Optional Alarm Contacts: Low Battery, Battery Ending, Earth Fault, Under Voltage, Over Voltage, Mains Failure, Charger Failure, Over Load, Over Temperature Low Electrolyte Level Alarm

14

15 Full-bridge IGBT- based Inverter Inverter 3 full bridge circuit, includes 6 IGBT Modules The inverter employs PWM-modulation. The switching frequency is 20 khz: No waveform distortion for reactive and nonlinear loads. 3-phase independent and self-regulated inverter means the unit can work with balanced and unbalanced loads. No need for extra filtration

16 Inverter Waveform: pure sine wave, THDv <3 % Static voltage regulation: +/-1 % Dynamic regulation: +/-5 % max. Free-running frequency: 50 Hz +/-0.1 Hz. Crest factor: 3:1 DC/AC Efficiency >95 %

17 Inverter Dynamic Response Output at % load change Output at 100 %-0 load change In sudden load changes dynamic response recovery time is 5 msec and max. voltage change is 5%

18 Inverter Switching wave form Switching at 20 khz There is no waveform distortion for reactive and nonlinear loads Low audible noise

19 Inverter Line voltage Output waveform Perfect output waveform with linear loads

20 Inverter Line voltage Output waveform Perfect output waveform with non-linear loads

21 Inverter Front Panel

22 Inverter Protections Ultra-fast semiconductor fuse at the dc input of the inverter. Input (dc) over/under voltage shutdown. Inverter output (ac) over/under voltage shutdown. Inverter frequency (ac) over/under frequency shutdown. Inverter overload protection. Over-temperature protection.

23 Static Transfer Switch Fast control and high performance with microprocessor control Uninterrupted automatic or manual transfer between independent sources 3 rd source input utilizable as a common bypass line for parallel redundant UPS use 3 rd source input utilizable as a redundant line input Completely semi-conductor based reliable structure that does not require maintenance Selecting prioritized source is possible Enabling or restricting asynchronous transfer

24 Static Transfer Switch Semi-conductor thyristor module failure detection Protection against overload, short circuit and over temperature Dry contact info in case of failure or source input failure LED block schema, light and sound warnings MCB thermal fuse protection at source inputs Manual maintenance and failure mechanical bypass switch Can be overloaded at 300% 3 redundant supply cards

25 Static Transfer Switch Source1 is off limits Blackout on Source1 at peak (Worst case scnario) Transfer from Source 1 to Source 2 at the peak value of the line with forced commutation Perfect synchronized transfer to Sorce 2 at 2 msec

26 Static Transfer Switch Front Panel OVER LOAD STATIC TRANSFER SWITCH OVER TEMPT. SOURCE1 SYNC. FAIL S1 SYNC. FAIL S2 SYNC. FAIL LINE SOURCE2 LINE (BY-PASS) CRITICAL LOAD SCR FAIL S1 S1 S2 ASYNC. SCR FAIL S2 SCR FAIL LINE PREFERRED SOURCE TRANSFER ENABLE RESET

27 Static Bypass Topology: Uninterruptible Static Switch with back-feed protection Optional isolation transformer and voltage stabilizer Load Level: 200% Transfer Time: <5 msec Voltage Tolerance: +/- 10% Frequency Tolerance: +/- 5%

28 Measuring true RMS Controlling with RISC Microprocessor Perfect static and dynamic regulation Wide input operating voltage range VAC Electronic protection against over-load and short circuit 220V ± 1% static regulation 100V/Sec regulation speed Programmable upper and lower limit for protecting over voltage Load level, input and output voltage display

29 System Input Protection: Over Current Thermic Fuse, Instant Over Voltage Protection Instant Voltage and Pulse Protection IEEE 587 (4500 A, 110 Joules) Output Protection: Short Circuit, Over Current Electronic Protection, Over and Lower Voltage Protection Low Output Voltage Tolerance GESS Servo Voltage Regulators operate mechanically at 100V/sec correction speed with low output voltage tolerance as low as(±1%). Thus they are ideal solutions for protecting electronic loads. In general applications they are highly recommended for no critical loads such as lighting, stabilizing input voltage correction in buildings and factories.

30 Front Panel

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