6kVA High Frequency Online UPS Power Supply

I. Products Introductions


Advanced Working Mode

With the double-conversion online design adopted, the UPS output is made into a frequency tracking, phase-locked and voltage-stabilized, noise filtered-out and non-interference from the electric grid fluctuations purifying sine wave power supply, so as for the UPS to provide more comprehensive and perfect protection of the users' equipment.
Zero switching time for the output, so as to meet the requirement of the precision equipment for the high standards.

The input power factor correction (PFC) technology is adopted, so that the input power factor is higher than 0.95, thus having improved the utilization rate of the electric energy,   eliminated completely the harmonic pollution of the UPS to the commercial electric grid and reduced the running costs of the UPS.


High Overall System Reliability:

The microprocessor is adopted for the control, which generates directly the high frequency pulse width modulation wave (SPWM) to control the inverter of the UPS, thus having simplified the control circuit of the UPS and improved the stability of the UPS.
The digital control technology is used, so as to ensure the consistency and reliability of the UPS.


Strong Environmental Adaptability:

The wide input voltage range is high up to 140V ~ 304V, so as to avoid frequent switchover of the batteries and adapt to the areas where there is adverse environment for the electric power. When used for half load, the input voltage may be low to  118V at minimum without need for switchover of the batteries. (1KVA ~ 3KVA)
Input frequency range (50Hz ± 10%), so as to ensure the stable working, when connected with any of the various fuel generators, thus having met the requirement of the users for their use of the fuel generators.


High Optimized Performance of Batteries:

The intelligent battery management (ABM) technology is adopted, so as to extend the service life of batteries and reduce the times of battery maintenance.
The advanced constant-current and constant-voltage automatic conversion  charging technology is adopted, so as to maximize the activation of the battery and save the charging time, thus extending the battery service life.


Comprehensive and Reliable Protection:

Provided with the self-diagnosis function at startup, so as to discover any hidden troubles in the UPS and avoid any negligence.
Provided with such multiple function protection as AC input over- & under-voltage
Provided with the self-diagnosis function at startup, so as to discover any hidden troubles in the UPS and avoid any negligence.

Provided with such multiple function protection as AC input over- & under-voltage
Provided with a bypass function, when there is a trouble occurred in the UPS, it will be switched over to the bypass working state without interruption, in which the commercial power supply will continue to supply the electricity to the load and provide the alarm information.
DC start function, the UPS is started directly in case of no commercial power supply available, so as to meet the emergency needs of users.

Fan intelligent protection, the UPS adjusts automatically the fan rotation speed according to the load capacity, so as to extend the service life of the fan and, when the fan is abnormal, the UPS will carry out the detection automatically and send an alarm displayed.

Network Management Humanization


The LED display panel provides accurately the UPS working environment and working status information and, through the combined display, the causes of the fault and trouble in the UPS can be quickly judged and determined, so as to make the maintenance of the UPS more convenient.

Via the RS232 interface and in coordination with the UPS intelligent monitoring software, communication can be carried out with the computer and the various parameters of the UPS are displayed clearly on the communication interface.

With the SNMP adapter selected, the UPS is equipped with the remote network management function, so as to provide the real-time data of the UPS and the power supply information and, through a variety of network operating systems for communication and management.




II.Main Parameters

Model EK901H(S) EK902H(S) EK903H(S) EK906H(S) EK910H(S) Nominal Capacity 1KVA 2KVA 3KVA 6KVA 10KVA load criterion 700W 1400W 2100W 4200W 7000W Working party workers and the principle High-frequency on-line double conversion AC Input Phase Single-phaseL,N+G Voltage 140~304Vac 160~275Vac Frequency 44~56Hz Maximum input current 7A 12A 16A 30A 51A Input power factor ≥0.95 ≥0.92 Battery Voltage Nominal Battery Voltage 36Vdc 96Vdc 192Vdc Float Voltage 41.2 Vdc 110 Vdc 220Vdc Cut-off voltage 31.52 Vdc 84Vdc 84Vdc 168Vdc 168Vdc Charge recovery time ≤8H AC Output Phase Single-phase L,N+G Voltage 220Vac±3% Frequency 50Hz±0.5%(Battery Mode) Maximum Output Current 5A 10A 13.5A 27A 45A Power Factor 0.8 Lag Output waveform sine wave Total harmonic distortion ≤3% Overload >105%→10s,>130%→3s, >150%→200msBypass switch >105%~130%→10min, >150%→200msBypass switch System Indicators Switching time On-line mode and battery mode is 0 ms, inverter and bypass <1 ms Full Load Efficiency ≥0.95 Computer Communication Interface RS232,Built-in SNMP card (optional) Operating Temperature 0~40ºC Relative Humidity 0~95% Non-condensing Running a high degree <1500m Cooling Temperature-cooled Noise (dB) ≤55dB Output Mode National standard or American standard socket Wiring Terminal Blocks Dimensions (W × D × H) mm 145×355×220 190×383×318 190×433×318 240×500×460 240×500×460 Host weight (Kg) 6.5 22 23 37 75

IV. Company Profile


JIANGSU EKSI ElECTRICAL MANUFACTURING CO.,LTD locates in Yangzhou Economical and Technological Development Zone of Jiangsu. This is a large technological joint-stock enterprise in China, developing and manufacturing UPS(Uninterrupted Power Supply ), special UPS for electric power industry, EPS, grid-connected solar network, stand-alone inverter, percision air-conditioned, photovoltaic controller telecom power supply, AC&DC stabilized voltage supply, maintenance-free lead-acid batteries, transformers and reactors etc.


The company is a high-tech enterprise and member of China Power Supply Society. It's one of those which passed authentications of ISO9001:2008 QC system and ISO14001:2004 environment management system, CECP, TLC, CE, TUV, AS4777 etc. Our products are always honored as "trustworthy products" and "Famous Brand of Jiangsu".


EKSI has established over 30 branches as well as sales agents and created a complete sales and service network. Our products are widely applied in finance, banking, stock exchange, traffic, civil aviation, CIQ, taxation, education, post & communications, oil as well as chemical industries, and are exported to over 60 countries and districts including Spain, Germany and USA. And experts of power supply protection and services appraised us for our excellent technologies, outstanding qualities, good-quality services.