20kVA Low Frequency Online UPS Power Supply

I. Brief Profile


With the on-line double conversion circuit design,the SPWM pulse width modulation design for the DC/AC inverter,the IGBT power modules and the output isolation transformer adopted,the UPS output is made into a frequency-& voltage -stabilized,purifying,non-interfered from the power grid fluctuations sine wave inver supply. In this way,such a series of interfence problems against the power sypply existing originally in the commercial power grid as the voltage fluctuations,frequency drift,waveform distortion,noise disturbance,lighting and thundr-strike are fully resolved through rectification and filtration into a DC power supply,so as to provide more comprehensive and prefect protection for the equipment of the users.


II.Main Parameters

Model	EKSD810H	EKSD815H	EKSD820H	EKSD830H	EKSD840H	EKSD860H	EKSD880H
Nominal capacity	10KVA	15KVA	20KVA	30KVA	40KVA	60KVA	80KVA
Method and principle of work	On-line static bypass switch power supply switch (continuous), double conversion technology, the output power is completely isolated
AC input
Phase	Three-phase + N + G
Electric tension	380V±25%
Frequency	50Hz/60Hz±10%
Input power factor	0.92(With input filter)
Warm boot	0~100% 5sec
Bypass the input
Nominal voltage	220V±25%
Nominal frequency	50Hz/60Hz±10%
Switching period	0ms
nominal voltage	192VDC
Floating charge voltage	220VDC
Non-conducting voltage	168VDC
AC OUTPUT
Voltage	220V±1%
Frequency	50/60Hz±0.5%(battery powered)
Power factor	0.8
Total harmonic distortion	Linear load<3%,The nonlinear load<5%
Dynamic load voltage transients	±5%(0~100% step)
Overload capacity	125%1min,150%1ms
System instructions
Full load efficiency	>85%
Protection against lightning strike	8/20µs,20KA
Communication interface	RS232/USB,SNMPcard(Option)(Remote network monitoring)
Operating temperature	0~40ºC
Relative humidity	20%~90%,No condensation
Service altitude	<2000(For every 100 m increase in power decrease by 1%,Up to 4000 meters)
Type of cooling	Forced air cooling
Noise(dB)	<58dB
Size: W×D×H (mm)	305 × 585 × 870		380 × 695 × 1015	430 × 805 × 1145	450 × 990 × 1210	500 × 1100 × 1220
weight(kg)	145		200	245	335	370	400

III.Functions


High Reliability

The DSP digital control technology and perfect protection circuit are adopted, which is good in stability.

The power devices are designed with imported IGBT modules in original packing adopted, which are extremely strong in overload and impact resistance capability.
The dual conversion technology and the static electronic bypass technique are adopted, thus having truly realized zero switching time.
Extremely wide input voltage and frequency range, thus reducing the battery discharging time and extending the battery service life.

Highly Humanized
Friendly man-machine interface design:Using the Chinese LCD display + LED indication, keeping the UPS operation status seen at a glance and maintaining the communication at a zero distance between man and machine.
Easy maintenance:The modular design is adopted for interior, which is concise, smooth and clear in structure.
Multi-mode design
There are the ECO (energy-saving) power supply mode, the parallel redundancy, the dual-unit series-connected hot backup and the dual-power input power supply mode to be selected to fully meet the different needs of different users.

High Environment Protection
The overall machine uses the advanced anti-electromagnetic interference technology, which complies with the international standards, has very good electromagnetic compatibility and minimizes or even eliminates the electromagnetic interference caused to equipment.
The Input and output are equipped with the harmonic filter, which minimizes the harmonic interference of the UPS against the electric grid.
High Compatibility
The wide input range and frequency range of the commercial electricity reduces the requirement of the UPS for the commercial electricity inputted and can be compatible with any form of electricity, including such application occasions as the applicable industrial power and wind power.
High-Intellectualized.
Provided with the advanced software management function and the flexible network monitoring function, it is easy to realize the intelligent monitoring of the UPS, including the short-range point to point communication monitoring, the middle distance communication monitoring and the long-distance network monitoring and to realize the real-time monitoring of the UPS running status and the operating parameters.

There are also such multiple functions provided as the automatic paging, E-mail sending, language functions and UPS remote switching machine.

The operating systems supported include: Novell, Netware, MS-windows98, Windows2000, Unix, Linux, WindowsXP, WindowsNT and freeBSD.
Fault Status Judgement Function
If the UPS is abnormal, the internal CPU will show the fault state on the Chinese LCD display, so as to understand the causes of the abnormal status before determining to carryout the corresponding processing.






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.