Introduction
LVSC series voltage stabilization device(namely Dynamic Voltage Distortion Compensator) adopts high-power power electronic technology and digital processing technology, and uses generalized second-order complex vector algorithm to quickly detect the transient process of power system voltage. While isolating the power supply of the transformer, the energy pre-stored in the super capacitor is fed back to the primary load to ensure the normal production.
The device adopts intelligent control mode, and flexibly sets the control logic according to the actual working conditions of the user. It is widely used in petrochemical, electronic, semiconductor, precision manufacturing, automobile, pharmaceutical, hospital, metallurgy, and machining industries that are sensitive to voltage. The best way to prevent "shake electricity".
According to incomplete statistics, more than 90% of the power quality problems in the modern precision manufacturing industry are caused by transient voltage fluctuations, and the impact and harm caused by such power quality problems to the precision manufacturing industry have become increasingly prominent.
Voltage Sag
IEEE standard and the national standard "Power Quality Voltage Sag and Short Interruption" (GB/T30137-2013) define: the RMS value of the power frequency voltage at a certain point in the power system is temporarily reduced to 10%-90% of the rated voltage (that is, the amplitude 0.1-0.9pu), and the phenomenon that it returns to normal after 10ms-1min is called voltage sag.
Voltage Swell
The phenomenon that the RMS value of the power frequency voltage at a certain point in the power system temporarily rises to 1.1-1.8pu, and returns to normal after a short period of 10ms-1min is called voltage swell.
short interruption
IEEE standard and national standard "Power Quality Voltage Sag and Short Interruption" (GB/T30137-2013) definition: The rms value of the power frequency voltage at a certain point in the power system suddenly drops below 0.1pu, and after a short duration of 10ms-1min The phenomenon of returning to normal is called short interruption of voltage.
Specification Sheet
| Item |
Parameter |
| Rated Capacity |
150kVA(50-2000kVA) |
| Rated Voltage |
400V (customized 690V/208V) |
| Frequency |
50Hz± 5% |
| System structure |
3P,TN |
| Correction Range |
±20% uninterrupted 100% output
Three-phase symmetrical drop residual voltage 60%, 100% output for 20s
Three-phase symmetrical drop residual voltage 40%, ≥90% output for 5s
Asymmetric drop residual voltage 30%, ≥90% symmetrical output 5s |
| Main circuit overload capacity |
110% In long run; 150% In 30s |
| Bypass Mode Overload Capability |
20KA/150ms,40KA/10ms |
| Output Voltage Accuracy |
≤ ±1% |
| Output accuracy during dip |
± 3% |
| Response time |
100us |
| full transition time |
< 10ms |
| Efficiency |
>99% |
| communication port & protocol type |
Ethernet(RJ45)/RS485 |
| Display |
HMI/SD card |
| IP class |
IP2X ( IP4X(customized)) |
System structure
working principle
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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