Gold Member Since 2015
Audited Supplier
Dongguan Kewang Technology Co., Ltd.

Voltage Stabilizer, Power Stabilizer, AC Voltage Regulator manufacturer / supplier in China, offering 50Hz 380V Oil Type Electronic Voltage Regulator Stabilizer, 3kw/5kw off Grid Solar Home Energy Storage System Built in Inverter and Battery, Complete Set of 5kw off Grid Solar Home Power System and so on.

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Supplier Homepage Product Automatic Voltage Stabilizer RLS Type Three Phase Auto Voltage Stabilizer 50Hz 380V Oil Type Electronic Voltage Regulator Stabilizer

50Hz 380V Oil Type Electronic Voltage Regulator Stabilizer

Purchase Qty.:
1-4 5+
FOB Unit Price: US $5,099 US $4,000
Purchase Qty. (Pieces) FOB Unit Price
1-4 US $5,099
5+ US $4,000
Get Latest Price
Production Capacity: 1000 PCS Per Month
Transport Package: 1 Piece Per Exported Wooden Cartons
Payment Terms: T/T, Paypal, Money Gram, Western Union

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Basic Info
  • Model NO.: RLS-300kVA-04
  • Phase: Three Phase
  • Usage: SVC
  • Size: Medium
  • Power Source: Switching Regulated Power Supply
  • Brand: Kewang
  • Maximum Capacity: 2500kVA
  • More Application: Commercial ,Industrial ,Medical ,Telecom
  • Trademark: kewang
  • Origin: China
  • Current Type: AC
  • Frequency Characteristics: Low Frequency
  • Frequency: Low Frequency
  • Iron Core Shape: Ring
  • Application Range: Hotel
  • Application: Product Line, School, Hotels, Hospitals
  • Product Name: 50Hz 380V Oil Type Electronic Voltage Regulator St
  • Color: Green , Can Be Customized
  • Specification: 1100*940*1750
  • HS Code: 850440199
Product Description
50Hz 380v oil type electronic voltage Regulator Stabilizer 

Headquartered in High-Tech Industrial Development Zone with 50.000 square meters
Factory area :130000 square meters ;  Monthly Capacity : 6000 pcs 
Our products ranges from 5KVA to 2500KVA 
(Voltage regulators / stabilizers, gensets, tranformers,UPS etc)
Emerson and Foxconn are among our customers

50Hz RLS 380v Phase 200KVA  Automatic Voltage Regulator
RLS series voltage stabilizer (AVR)is designed in advanced inductive and digital control system to stabilize the output voltage within requirement. The oil immersed voltage stabilizer has the protection functions of phase failure, phase loss, over voltage and over-current. Its main circuit has the characteristics of contactless voltage regulation, no mechanical wearing, no spark, no interference and low failure rate. In addition, this voltage stabilizer has the advantages of high impact resistance, super strong instantaneous overload capacity and long service life. The capacity is from 100KVA to 2500KVA.
COMMERCIAL: High-rise building, elevator control, large A/C chillers, lighting, and other sensitive critical systems.
INDUSTRIAL: Industrial automation, production lines, CNC, factory robotics, heavy load machinery, precision machinery.
MEDICAL: X-ray, CT scanner, MRI system, Radiation therapy machine, other medical imaging equipments.
TELECOM: Data exchange center, Mobile base stations, control centers and transmission relay stations.
--Auto/Manual operation and manual regulation functions.
--LED display for input voltage, output voltage, output current.
--Digital MCU is controlling output voltage. Voltage precision is adjustable.
--Contactless carbon brush, High Reliability and strong resistance ability to overload.
--Stepless voltage regulation to stabilize output voltage.
--Good adaptability to variant loads and ambient.
Application Environment:
Installation site should be no serious effect on the transformer insulating gas, steam, chemical deposition, dust, dirt, and other explosive corrosive medium; It cannot be installed in a condition of significant vibration turbulence.

Specification (only for REFERENCE)
of RLS Series 3 phase 1000KVA automatic ac voltage regulator avr


Company Profile of KeWang Group
Kewang was established in 1995 with headquarter in Songshan Lake National High-Tech Industrial Development Zone, 
Donguan city, Guangdong Province, China. It has a total construction of 50.000 square meters which consists of 
two subsidiaries, Dongguan Kewang Technology Co., Ltd, & Jiangxi Kewang Technology Co., Ltd. 
Dongguan Kewang is the Group's high class product development, manufacturing and sales base. 
Jiangxi Kewang is the Group's Conventional products R & D, manufacturing base, with an area of 
130,000 square meters.
Kewang Group is a high-tech enterprise norminated by Guangdong Government. It's engaged in 
new energy and power supply whose business covers power devices for Wind Energy, Solar Energy, 
and Natural Gas. It's dedicated to R&D, manufacturing,sales & engneering of high/ low voltage transmission, 
distribution devices & related power devices. Moreover, it provides integrated solutions for enterprises power suply, data center, and distributed new energy. Kewang has been serving for royal customers over 40 countries, with recognized good quality & professional service.  
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. Its products are qualified with European CE certification 
and American UL certification. We had taken 11 projects norminated 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 integrate various resources for R&D, 
quality& management improvement-- these cooperation enable us to set up strong advantages in
 techniques, talents & brand promotion.
Kewang group upholds the principle of "Technology Oriented & Sustainable Operation". 
We keep introduction of new techniques for innovated products, keep on improving management & 
optimizing product quality. We are dedicated to prvode global customers power solutions which are reliaible, 
energy-saving & environment-friendly. We create win-win value for customers, and return value to the piblic, 
which's our original motivation as Kewang's "beginner's mind".
Main machines we use for manufacturing
Voltage regulators / stabilizers, gensets, tranformers,UPS etc
Machines for production
Vertical winding machine
Toroidal Winding Machine
Foil winding machine
Vacuum impregnation machines
Machines for testing
3 Phase intelligent power measuring electric meter
Negative load test box
Aging test room
FAIR SHOW of Kewang Group

Quality Assurance System of Kewang Group
1.Supplier Evaluation
2.Income Inspection ( Material Purchasing )
3.Testing (Winding ) ( Lamination stacking )(VPI Peration)
4.F/G Ispection ( Assembling and Cleaning )
Factory View

Our Service
1.Quick response in before sales period help you got order
2.Excellent service in production time let you know each step we made
3.Reliable quality solve you aftersale headache
Q1: What is the Guarantee?   A1: 12 months (for free) from the date of B/L. 
Important: 1. The efficiency of our Voltage Regulators / Stabilizers are 90% to 95% 
  (some series of them reaches 95%), please don't let them work overload!
2. Please make sure that all the electric wires are connected correctly
according to the electric diagram!
Q2: Can we put/show our own Logo on your products? 
A2: Yes, no problem, however, the quantity should be a bit bigger. 
Q3: For your products, can we take our Favourite Colours? 
A3: Yes, no problem. But we need certain quantity , all colors need to be debugged.
Q4: Is OEM/ODM available?
A4: Yes, it is! Our products can be Customized. We have 20 senior engineers in our R&D Dept., 
we design and produce all kinds of Automatic Voltage Regulators/Stabilizers ,transformers 
according to our customers' specific requirements. 
Q5: How about the Packing?
A5:All exported goods are packed with compsite board cartons , so that we could better protect 
our roducts and also easier for being piled up
Q6: How about the Delivery Time?
A6: Generally speaking, it takes us 2 weeks to produce the goods after deposit or L/C. 
Q7: What is your monthly output? A7: 6000pcs
Q8: What is the MOQ?
A8: For the small capacity products (Automatic Voltage Regulators/Stabilizers) 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 to us.
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: What kind of Certificates do you have?
A11:  ISO9001:2008 ( Register Number : UQ110457R0) (Website
          ISO14001:2004 ( Register Number :UE120063R0) (Website
          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 :What patents do you have ?
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
Q 14.What to do?
A 14. To enter into a long term good/happy business relationship on the basis of mutual benefit, 
please contact us now.We'll answer/reply you within 24 hours (except our holidays) after we see your inquires.
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Ms. Elynn Wang
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