Large capacity Industrial Power supply UPS LCD display
A Profile of the Kewang Group Established in 1995, Kewang Group has its headquarter in Songshan Lake National Hightech Industrial Development Zone, Donguan, Guangdong Province, China. It has a total construction field of 50,000 square meters which consists of two subsidiaries: Dongguan Kewang Technology Co., Ltd, which is responsible for high class product development, manufacture and power distribution system service; and Jiangxi Kewang Technology Co., Ltd which is responsible for the R&D and manufacture of standard products.
Started with electromagnetic components, like transformer, reactor, UPS etc, Kewang engage himself in new energy and power distribution system, and in this moment, its business covers power devices and components for Wind power, Solar power, Natural Gas Energy, etc. It dedicated to R&D, manufacture, sales & engineering of high/ low voltage transmission, distribution devices & related power devices. Besides, it provides integrated solutions for enterprises , data center. Kewang is a loyal partner with customers in more than 40 countries.
As a leading power supply company, Kewang Group had taken the lead to be qualified with the ISO9001 quality system certification & ISO14001 environment system certification, and the CCC China mandatory certification. Our products are qualified with European CE certification and American UL certification. We had taken 11 projects nominated by the local government: 4 of which had won government's scientific prizes, and over 30 patents had been achieved. We keep consistent cooperation with South China University of Technology and Wuhan University. With the introduction of high class technical talents, we provide various resources for R&D, quality& management i quality& management improvement which enable us to maintain advantages in techniques, talents & brand promotion.
Kewang Group upholds the principle of "Technology Oriented & Sustainable Operation". We keep introducing new techniques for innovated products, and keep improving management & optimizing product quality. We are dedicated to provide global customers power solutions which are with high level of reliable,energy-saving & environment-friendly. We create win-win value for customers, and return value to the society, which is our original motivation.
KW8000 SERIES UPS
KW8000 SERIES UPS is made for IDC, Enterprise data centers, Industrial process equipment, Laboratories, etc. It provides reliable power protection and advanced technology for high power applications. It offers excellent dynamic performance, with the ability to handle virtually any input condition while still providing computer grade output to critical loads.
CHARACTERISTICS True double convertion on-line UPS with capacity from 100kVA to 600kVA High level quality battery packs to guarantee back-up time Isolation transformer, which suits for precision load and increase reliability Great capacity to power 100% unbalanced load Up to 4.8 MW UPS capacity when working in parallel Patented power electronics and magnetics ensures 0s transfer time to inverter Double DSP-Chips Control to increase flexibility, safety, reliability, and stability.
Input Performance Robust Rectifier for Wide Input Range The wide AC input voltage and frequency window avoids unnecessary battery discharge even when operating from an unstable AC source (i.e. diesel generator). SCR Rectifier is ok to increase Input PF, and extra harmonic filter for input is available to make the Input PF to 9.4.
Programmable Soft Start Allows the rectifier to ramp up in a programmable time period (6-100s settable) eliminating in-rush current. This feature reduces the need of oversizing the input power system (gensets, feeder cables, and overcurrent devices).
Generator Compatibility User-programmable features such as slew rate, phase angle rate-of-change and voltage rate-of-change allow the UPS to quickly sync to a genset during emergency back-up. GE's optional input filter also has user-programmable features ensuring quick and continuous synchronization to generator voltage.
Easier Installation and Configuration Flexibility · Top or bottom cable access · Matching battery and maintenance bypass cabinet for easy configuration · Front Maintainability Design reduces mean time to repair
Scalable Solution · Scalable Solution · Redundant Parallel Architecture (RPA) provides reliability, redundancy and scalability · Parallel up to 8 UPS Modules · Long history of experience with Redundant Parallel Architecture (RPA) which increases system reliability by eliminating single point of failure
Output Performance Total Harmonic Distortion (THD) A distorted output voltage waveform affects the proper function of the load's equipment. The KW8000 Series has very low output voltage THD, even with connected 100% unbalanced or 100% non-linear loads.
Transient Response With the use of SVM and the ZigZag transformer, the KW8000 UPS can react very quickly to zero-100% step loads (within 1/3 cycle). This reduces the need to oversize the UPS for severe pulse-load applications.
Overload Capabilities The KW8000 Series UPS has a robust inverter capable of delivering 150% overload for 60 seconds, 110% for 1hour and 105% for long time working.
Phase Load Imbalance The UPS Output ZigZag transformer, via its inherent characteristics and windings configuration, provides excellent voltage regulation against phase-to-neutral (Ph-N) load imbalances.
Redundant Parallel Architecture(RPA) System
Configuration Kewang provides RPA, a unique technology that can parallel UPS modules with true redundancy by eliminating any single point of failure. RPA provides a scalable paralleling technique that reduces operating footprint and increases system reliability by eliminating the need for external paralleling equipment and cabinets (centralized bypass and master control).
One of the UPS modules in the system intelligently takes the leadership role, while the other UPS modules have access to all control parameters. If one UPS fails to operate, the load is automatically redistributed among the others. If the lead UPS fails to operate, then another UPS automatically takes on the leadership role. Kewang's RPA technology is implemented by distributing the control electronics within each UPS module in the system.
RPA System Advantage No single points of failure Online Maintenance Scalable and Modular Sequential Soft Start Redundant Communication Smaller Footprint Distributed Control Logic
Output Power rating(kVA)
380/400/415V or 220/230/240V
6-Step Thyristor Bridge Rectifier
12-Step Thyristor Bridge Rectifier
Voltage Range (w/o bat discharge)
0.8 ( 0.94 with Input filter)
<10%(with input filter)
<7%(with input filter)
380/400/415V or 220/230/240V (4w + Grd)
PWM IGBT Inverter and Zigzag Isolation Transformer
Static Voltage Regulation
100% Step Load Voltage Distortion
100% Linear Load Voltage Distortion
±1% THD maximum
100% Non-Linear Load Voltage Distortion
±3% THD maximum
105% continuous; 110% for 1h; 125% for 10min; 150% for 1min
Overload Capability/Static Bypass
110% continuous; 200% for 1min
LED + LCD
12month after startup or 18 month after shipment
Wet Cell (and DC Flwheel technologies)
(360~408) / (2V/Cell)
10×discharge time( at 30min battery runtime)
Flexibility · Matching battery and maintenance bypass cabinets for easy configuration · Top or bottom cable entry · Internal cabinet cable wiring simplifies installation · Ship-ahead I/O section can be installed before UPS installation
Higher Availability · Redundant components fans, power supplies, communications cards · Provides superior handling of present and future computer loads, up to 0.9 leading power factor without derating · High input fault current capability · Touch screen controls improve user interface and reduce risk of human-made error · Excellent dynamic performance · Generator and utility friendly with low current distortion
Lowest Total Cost Of Ownership · Front access for installation and service · Compact cabinets require less floorspace · Improved cable access results in faster installation · Inter-cabinet cabling requires less hard wiring · Built-in battery cabinet breaker isolates string for ease of service
Ideally Suited For · Enterprise data centers · Industrial process equipment · Laboratories · Any application requiring high levels of power availability and computer-grade power quality
Our Team We possess a team of 700 with highly skilled and sophisticated members, and this makes that it is possible to achieve the our predefined goals and reach the targets. These professionals, of whom half are with a bachelor degree or more, are recruited on the basis of their skills and ability to perform. To manage their operations, in the most efficient and effective manner, the team has been sorted into a number of highly operational units. In addition to this, the professionals are trained on a highly regular basis, for reasons of keeping them at par with the ever changing market.
Why Us We are amongst the leading manufacturers, suppliers and exporters of this highly commendable range of Industrial Machinery. To live up to this market standing, we engage in the utilization of high grade raw materials and modern machines, in compliance with the set industry norms and guidelines. This ensures the product's performance, capacity, strength and service life. In addition to this, the range is made available in the market at the most reasonable rate possible and is delivered in the timeliest manner.
Infrastructure The highly advanced infrastructural facility at Electro Magnetic Industries, has been laced with all the necessary machinery and equipment, which helps us in the attainment of a number of the firm's predefined goals and targets. For reasons of attaining smoother and effective management of the firm's operations, the facility has been parted into several highly operational units. In addition to this, the facility is regularly upgraded, for reasons of attaining a better position in the market. Quality Assurance To us at Electro Magnetic Industries, providing quality is something of high importance. Thus we engage in the utilization of high grade raw materials and modern machines, as per the norms and guidelines of the industry. This ensures the product's performance and longer service life. In addition, the offered range is known to be processed through several rounds of quality examinations, where all manufacturing defects are eliminated with high level of precision and quick response. .
FAQ Q1: What about the Guarantee? A: 12 months (for free) from the date of B/L.
Q2: Can we put/show our own Logo on your products? A2: Yes, no problem, We do OEM to customers oversea (not for Chinese customers).
Q3: For your products, can we take our Favourite Colours? A3: Yes. But we need certain quantity ,any colors or types are avariable as you like.
Q4: Is OEM/ODM available? A4: Yes, it is! Customized products are provided.
Q5: How about the Packing? A5:All exported goods are packed with wooden cases (IP20), other kinds of case are also avriable as requried.
Q6: How about the Delivery Time? A6: In generally, it takes 7 days (not including Customized products) to produce the goods after deposit or L/C.
Q7: What is your monthly output? A7: 6000pcs (products below 1KVA are not counted).
Q8: What is the MOQ? A8: For the small capacity products (UPS/ Automatic Voltage Regulators /Stabilizers below 5KVA ) of the default configuration, it is 5 sets. For the big capacity products, it is 1 set.
Q9: How about the Delivery Terms? A9: By sea or by air or by road, FOB ,CFR, CIF, etc. any is acceptable .Besides, some items can be sent by international express, such as DHL,TNT,UPS,EMS, Fedex, etc. Q10: Can you offer Form A or Form E or C/O ? A10: Yes, no problem, we can apply for it from our local government.
Q11: I would like to know your Certificates? A11: ISO9001:2008 ( Register Number : UQ110457R0) (Website :www.uicc-web.com) ISO14001:2004 ( Register Number :UE120063R0) (Website :www.uicc-web.com)CE can made according to customers' requirements Fifth-Class Qualification of Transmission and Distribution projects. License of Telecom Equipments Network (issued No. 25-4751-011468) Member of CPSS (ZHGT ZI No. 654) High-Tech Enterprise
Q12 :And patents too 1.)Patent Name : UPS power with dual core isolation transformer leakage inductance Patent Number : ZL200420095777.2 2.) Patent Name : Three-phase UPS load output isolation transformer balanced structure Patent Number : ZL200520067082.8 3.) Patent Name : Adjustable Precision winding mode for the square core transformer and reactor coils Patent Number : ZL201220003826.X 4.) Patent Name : An improved three phase shift reactor Patent Number : ZL201220004052.2 5.) Patent Name : An improved phase-shifting rectifier transformer Patent Number : ZL201220035747.7 6.) Patent Name : Oblique laminations for transformer means sewn directly or reactor core in square Patent Number : ZL201220035746.2 7.) Patent Name : An easy cooling coil transformers and reactors Patent Number : ZL201220202948.1 8.) Patent Name : A co-yoke filter reactor Patent Number : 201,210,144,509.4 9.) Patent Name : PV isolation transformer cores for tensioning devices Patent Number : ZL201320174097.9 10.) Patent Name : Winding mold for photovoltaic reactor with iron core Patent Number : ZL201320174024.X 11.) Patent Name : Parking solar charging station Patent Number : ZL201220732233.7 12.) Patent Name : An inverter PV filter reactor coils Patent Number : 201,320,816,933.9 13.) Patent Name : For transformer or reactor coil end insulating structure Patent Number : 201,320,817,109.5
Q13: What is the Terms of Payment? A13: L/C, T/T, or others.