The non-linear loads such as electric welding machines, laser welding machines, and large-capacity inductive loads (mainly based on electric motors) are used extensively in automotive workshops (press shop, welding shop, assembly shop, etc.), resulting in serious load currents in all transformers in the workshop. Harmonic currents are mainly 3, 5, 7, 9 and 11 times. The total voltage distortion rate of the 400V low voltage bus reaches more than 5%, and the total current distortion (THD) reaches 40%, resulting in 400V low voltage supply. The total harmonic distortion of the power distribution system is exceeding the standard and leads to serious harmonic power loss in the power equipment and transformer. At the same time, all load currents of the transformers in the workshop have severe reactive power requirements. The average power factor of some transformers is only about 0.6. There is a serious power loss problem and results in a serious shortage of the transformer output active capacity. Harmonic interference makes the car Fieldbus automated production system does not work.
Introduction
The active power filter (APF) is mainly composed of controller, isolation switch (circuit breaker), contactor, IGBT, driving circuit, protection system, fuse, connection reactor, DC capacitor, etc. The controller measures phase A, C reactive power(current), produces control signal, drives IGBT on/off and produces harmonic and reactive current same as system harmonic current but in opposite phase to filter system harmonic, reduce reactive power and keep system power factor approximately at 1.
Our APF equipment is module structure,there are two types Wall Mounted and cabient mounted.The Wall Mounted type is preferred to be used in equipment improvement which is very conveninet to install.
The Sanhe Modular Active Harmonic Filter series are suitable for applications of all types, providing harmonic mitigation, load balancing and step-less reactive power compensation for inductive and capacitor loads.
Main Parameter
Rated voltage: 0.4kV,0.69kV
Frequency: 45Hz ~ 63Hz
Three level topology and high efficiency up to 97%
Filtering capacity: THDi (current distortion rate) < 5%
Response time: less than 15ms
Communication interface: RS485, network port,Wi-Fi
Feature
Harmonic, dynamic reactive power and imbalance compensation mode available.
Compact and reasonable structure, flexible installation.
Combination of FFT and instantaneous power algorithm available.
3DSP+CPLD control mode
2nd ~50th harmonic can be compensated simultaneously, and specific harmonic orders are programmable.
Harmonic compensation, reactive power compensation and three-phase unbalance compensation.
Communication protocol: the power of the general protocol, Modbus protocol, TCP/IP
Fault alarm and recording function, can be as much as 500 alarm records.
With all kinds of complete and effective protection measures, such as over-voltage protection, under voltage protection, short circuit protection, inverter bridge reverse protection, compensation protection etc.
Protection grade: IP20, the remaining IP grade can be customized
Human-friendly LCD displaying all voltage, current and harmonic data in numerical, waveform and spectrum. Log record is available.
Specification Sheet
| Model |
Output
Current
(A) |
Electrical
Wiring |
Net Weight(kg) |
Structure |
| APFM0.4-35/3(4)a |
35 |
3 phase,3 wires/3 phase,4 wires |
32 |
Wall Mounted
|
| APFM0.4-50/3(4)a |
50 |
3 phase,3 wires/3 phase,4 wires |
32 |
| APFM0.4-60/3(4)a |
60 |
3 phase,3 wires/3 phase,4 wires |
40 |
| APFM0.4-100/3(4)a |
100 |
3 phase,3 wires/3 phase,4 wires |
45 |
| APFM0.4-150/3(4)a |
150 |
3 phase,3 wires/3 phase,4 wires |
48 |
| APFM0.4-35/3(4)b |
35 |
3 phase,3 wires/3 phase,4 wires |
32 |
Rack Type |
| APFM0.4-50/3(4)b |
50 |
3 phase,3 wires/3 phase,4 wires |
32 |
| APFM0.4-60/3(4)b |
60 |
3 phase,3 wires/3 phase,4 wires |
40 |
| APFM0.4-100/3(4)b |
100 |
3 phase,3 wires/3 phase,4 wires |
45 |
| APFM0.4-150/3(4)b |
150 |
3 phase,3 wires/3 phase,4 wires |
48 |
Advantages:
Optimize your harmonic filtering efficiency: the 3-Level Topology Design Approach
Active harmonic filters are based on power electronic technology, designed for mitigating harmonics injected by non-linear loads in power networks, generally installed in parallel to the polluting loads. The active filters analyze the line current harmonics drawn by the loads and generate a compensation current at the opposite phase angle, thereby "neutralizing" the harmonic currents.
Optimized harmonics filtering efficiency
Selection of every harmonic to the 50th order /Filter up to 50th harmonics simultaneously /Harmonic filtering levels [%] for each specific harmonic order can be pre-configured / Resonance protection by means of pre-configuring harmonic filtering levels for the potential resonance zones / Harmonic attenuation > 97%
Compact high performance
Ultra-compact, space economical / User-friendly, ease of commissioning / Parallel capability of modular AHF units with respect to network requirements / Available in rack, wall mounting designs and complete enclosure type
Enhanced Reliability Levels
Incorporates intelligent FFT calculation method:
Provides "real time sensing" of network impedance for progressive harmonics compensation to achieving system stability
Advanced control algorithm for resonance protection
In event of parallel resonance with load variations, the APF is designed to assess and "shut-down" to avoid equipment damage
Unique modular design.
Each module works independently both in wall and rack mount type, easy for logistics, installation and maintenance work.
Modular power ratings 35A/50A/60A/100A, and unlimited combination in parallel.
The maximum capacity per cabinet can be 600A, especially used in applications where space is at a premium.
Detailed Photos
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.
Audited Supplier 
){kind=link}