Product introduction
Sanhe LDVR is an inverter based system that protects sensitive industrial and commercial loads from voltage disturbances. It is optimally designed to provide equipment immunity from power quality events on the Alternative current system .
Feature
No energy storage needed
By-pass working mode
Electrical isolation for overhauling and maintenance
Voltage sags and swell correction, even with regenerative loads
Rugged overload capability
Fault log and voltage event data logging
Ethernet/RS485 connectivity
Modular construction
User-friendly experience design
Product Description
Voltage sags is quite popular in the AC supply system, specially caused by large load changes,motor, compressor, cap.bank starting etc. The short circuit faults in the distribution and transmission grid or at a neighbouring load, which are caused by lightning, storms or overhead lines problem, physical damage to the grid etc. bring voltage sags. Voltage sags impact the peoples life and industrial production. Sanhe LDVR is a good solution to correct voltage sag and swell.
Diagram
Model Selection
| series |
DVR50~150kVA |
DVR200~350kVA |
DVR400~
450kVA |
DVR500kVA and above |
| System Parameters |
| Rated voltage |
208V, 220V, 380V, 400V, 415V, 460V, 480V,690V |
| Rated capacity |
50kVA,75kVA, 100kVA, 150kVA |
200kVA, 250kVA, 300kVA, 350kVA |
400kVA, 450kVA |
500kVA and above capacity |
| Rated frequency |
50Hz/60Hz, ±5Hz |
| Full response(From detection, output compensation to voltage restore) |
< 3ms
|
| Compensation ability |
Voltage input
IN |
Voltage output
OUT |
Time of duration
|
3P sagging to 50%*Un
|
100%
|
30s
|
2P sagging to 40%*Un
|
100%
|
30s
|
1P sagging to 30%*Un
|
95% |
30s
|
1P sagging to 0%*Un
|
1P 60%*Un
2P 90%*Un
|
30s
|
3P (80%~120%)*Un
|
100% |
Continuous
|
| Voltage unbalance |
< 3%
|
Frequency tracking fault
|
< ±0.2Hz
|
Output voltage harmonic
be connected in parallel |
< 2.5%
|
Operation Loss
|
< 2%
|
Voltage compensation Fault
|
< 1%
|
Voltage loss
|
< 2%
|
| Noise |
<68dB |
| Installation type |
Cabinet, indoor/ outdoor |
| Environmental parameters |
| Altitude |
≤2000m , 2000m ~ 4000m derating |
| Operating temperature |
-10ºC~40ºC |
| Relative humidity |
5%RH-95%RH, no condensation |
Standard
GB/T 18481 "Power Quality Temporary Overvoltage and Transient Overvoltage"
GB/T 30137 "Power Quality Voltage Dips and Short
Interruptions"
DL/T 1194 "Power Quality Terminology"
IEC 61000-6-2
IEC 61000-4-34
Application Fields:
Precision manufacturing(Robots production)
Hospital (MRI, PET, CT, e.g.)
Non-stop processes (Fiber production)
Buildings (UV-lamps, microwaves,Compressors )
Universities (Supercomputers, R&D TV, audio, universities, e.g.)
......
Installation:
Centralization Compensation(bus bar )
Local Compensation(load )
Product Solution Selection
In the market, there are three types of voltage stabilization,automatic voltage regulator, automatic voltage conditioner(without energy storage), dynamic voltage restorer(with energy storage). The main difference is in full response time, short interruption treatment. The price is quite different. Anyhow,we can give you a suitable voltage treatment solution.
Company Profile
Founded in 2002, Sanhe Power Tech is a national high-tech enterprise that specializes in power quality products, R&D of technology and solutions, production,service etc. It becomes industry-leading company.
The company has got multiple technologies including.
28 invention patents,
24 software copyrights,
22 national standards and 15 industry standards drafting.
Sanhe Power Tech is a member of international committees such as
the International Electrotechnical Commission (IEC)
the Institute of Electrical and Electronics Engineers (IEEE) etc.
The software development system has passed the CMMI evaluation of the American SEI.
There are three main business covering:
A full range of power quality testing and governance products and complete solutions.
Distributed new energy system products and advanced solutions.
Primary and secondary engineering based on "dual carbon" and energy management with standardized and professional engineering services.
Our Advantages
Simulation of GRID Reactive Load Flow
Analysis of L-C Circuit Amplitude-frequency Characteristic
Integration & Relay Coordination Reaction
Characteristic Curve of Permanent Magnet Breaker
Sampling & Filtering of Electronic Circuit
IGBT Driving & Protection
PWM Technology
Technology about Semiconductor Forced Commutation
Thermal Simulation & Heat Exchange Design
Feed-forward Second-order Complex Vector Algorithm
3D & Data Simulation
Instrumented IOT Communication
VP Scheduling & Dispatcher
Digital Twins of Micro-Grid & Islanding-Grid
FAQ
What kind of payment terms can we accept?
Payment in advance,Installment payments,Letter of credit(L/C).
What is the lead time of products?
According to different products, the lead time is different.
For standard products like APF,SVG, the lead time is one week.
For customized capacitor bank etc, the lead time is 25 to 45 days.
How to find the product model if you are some demand?
If you need our technical guide,please advise your problem details as much as you can,we can give more reasonable solution.
You may provide following drawings or report
Single line drawing
Panel primary scheme drawing
Power quality test report(mainly about harmonics)
How to find the product model if you have details electrical drawings?
Please advise Load name plate, load working condition, existing power factor, target power factor, harmonic times etc Or Rated voltage,compensation capacity, harmonic times(reactor detuning factor), other components etc.
How to find the product model if you can not provide enough information?
We can supply your products according to your technical requirement.
We can go to your project site and give a professional test report after test.
Why do we choose Sanhe power quality solution?
Sanhe has specialized in over 20 years experience in power quality products and solution. We have met most of power quality problems and gave the solutions.
What kind of technical service does Sanhe provide?
• Project-site power quality test ( or test report from customer)
• Improvement solution and budget
• Product solution and price
• Products supply
• Product commissioning
What kinds of standards does Sanhe product conform to?
Except China standards, Sanhe products also conform to IEC standards including
IEC61921 :2003 IEC61000-4-5:2005
IEC60529:2001 IEC60931-1: 1996
IEC60439-1 :2005 IEC60664-1 2007
IEC60831-1: 1996 IEC61000-4-3/2/4/5/18 IEC61000-2-4
IEC60255 IEC62208 2011…
IEC255-22-1
What is the compensation effect after using Sanhe products?
• Harmonic filtering meets standard
• Power factor is over 0.95,electrical bill saving,low reactive power penalty killing
• Reducing the loss of transformer and line
improve the distribution ability,
prolong the lifespan of electrical equipment
How long is the product guarantee time?
Usually,the guarantee time is one year. However,we can accept over 5 years too. Please contact our sales to get details information.
How to become the distributor or agent of Sanhe brand products?
Sanhe is looking for overseas distributor and agent. If you are interested in it, please feel free to contact us.
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