Sanhe SEK Series Monostable Permanent Magnet Actuated Vacuum Contactor, as a new generation of high voltage vacuum contactor, is fitted a permanent magnet mechanism to close/open the dynamic and static contacts of the vacuum interrupter in a direct motion. SEK Series Monostable Permanent Magnet Actuated Vacuum Contactor is applicable in the three-phase AC system (Voltage: 12kV and below; Rated Frequency: 50Hz/60Hz) that requires frequent switching operations. SEK Series Monostable Permanent Magnet Actuated Vacuum Contactor adopts an efficient and reliable electronic control module with a wide voltage range, which is responsive during switching operation and has auxiliary contact output capability
Application
SEK Series Monostable Permanent Magnet Actuated Vacuum Contactor has the characteristics of energy saving, material saving, fireproof, explosion-proof, small size, long life, low maintenance cost, reliable operation and no pollution. It is widely used to control and protect the power distribution systems in power, machinery, metallurgy, mining, petroleum, chemical, railroad, broadcasting, communication, transportation, and other sectors. The Contactor, developed to execute the switching operations in a vacuum, is highly reliable and compact in design for the application in harsh conditions. It is suitable for controlling and protecting (with fuses) circuit lines, motors, transformers, capacitor banks, etc.
Feature
Main features of SEK Series Monostable Permanent Magnet Actuated Vacuum Contactor are as follows:
- maintenance free
- reliable vacuum interrupter technology
- frequent operation support
- monostable permanent magnet actuator
- long electrical and mechanical life
- wide voltage power supply module
- small closure value
- compact structure
Reference &Executive standards
SEK Series Monostable Permanent Magnet Actuated Vacuum Contactor complies with the standards of most industrial countries and fully complies with the following standards:
- IEC 62271-106:2011 <High-voltage switchgear and controlgear-Part 106:Alternating current contactors, contactor-based controllers and motorstarters>
- IEC 60282-1:2020 <High-voltage fuses-Part 1: Current-limiting fuses>
- GB/T 14808-2016 <High-voltage AC contactor, contactor-based controller and motor starter>
- GB/T 16926-2016 <High-voltage AC load switch-fuse combination electrical appliance>
- GB/T 11022-2011 <Common technical requirements for high-voltage switchgear and control equipment standards>
- GB/T 15166.2-2008 <High Voltage AC Fuses Part 2: Current Limiting Fuses>
- JB/T 7122-2007 <Basic requirements for AC vacuum contactors>
Working Principle
The permanent magnet actuator is a monostable system, which uses the magnetic force generated by the permanent magnet to keep the gate in the closed position, and the spring to keep the gate in the open position.
In the closed position, there is no current in the closing coil, and the armature is firmly attached to the permanent magnet; during the opening process, the opening capacitor discharges to the closing and opening coil, and as illustrated in the sectional diagram, the current generates a magnetic field on the armature pointing to the opposite direction from that of the magnetic field of the permanent magnet, which, together with spring, detaches the armature from the permanent magnet and secures it in an open position; during the closing process, the closing capacitor discharges to the closing and opening coil, and as illustrated by the sectional diagram, the closing current points to the opposite direction from that of the opening current discharged by the opening capacitor, thus generating a magnetic field pointing upward. When the combined magnetic force generated by the current grows bigger than the spring force that keeps the gate open, then the armature is pushed upward.
Technical specification
Company Introduction
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 
The permanent magnet actuator is a monostable system, which uses the magnetic force generated by the permanent magnet to keep the gate in the closed position, and the spring to keep the gate in the open position.
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