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~I. Brief 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.

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II.Main Parameters

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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.