Magnetic controlled automatic tracking tuning arc-suppression coil
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Magnetic controlled automatic tracking tuning arc-suppression coil
The first 66kV magnetic controlled automatic tracking tuning arc-suppression coil (1900kVar/66kV) in China had been put into operation in the Taipingshao 66kV substation of Dandong Power Supply Branch of Liaoning Province Power Supply Company in Jan 29, 2008.
The 66kV magnetic controlled automatic tracking tuning arc-suppression coil thatwas put into use is firstly witnessed at home and was jointly developed andmanufactured by Dandong Power Supply Company, Dandong Xintai Electric StockCo., Ltd. and Wuhan University.
Asreported, the adjustable arc suppression coil commonly used for the mediumvoltage distribution network in our country mainly adopts adjusting gapped-core type and multi-tap type. The adjustinggapped-core type arc-suppression coil changes magneticresistance through the movement of iron core toreach the purpose of inductance continuous adjustable, arc suppression coil istransferred to full compensation under normal condition, and the loop seriesconnection of arc-suppression coil resonance of anti-resonance. Thedisadvantages of the product are loud noise，poorreliability, virtual earthing and so on. The only difference between multi-taparc-suppression coil and adjusting gapped-core type arc-suppression coil is tocontrol winding turns by using load voltage regulating switch to adjust inductance.The working method of it is as same as the adjusting gapped-core type, alsousing series resistance to restrict the resonance overvoltage. Although, theproduct solves the problem of noise, but still has the disadvantages ofinductance continuously adjustable, comp, virtual earthing, etc.
The new magneticcontrolled fast auto-tacking tuning arc-suppression coil is the combination ofmodern electric controlled technology and double grade magnetic saturation technology, using self coupling type DC excitation control mode to realizefast response and continuous adjustment of arc-suppression coil inductance. The product is using a dynamic full compensation mode, which solves inherent contradictions fundamentally between the ideal goal of full compensation and the systemvirtual earthing caused by series resonance. The impedance of the magneticcontrolled arc-suppression coil is very large during normal operation of the network, which completely eliminates the hidden trouble of series resonance without series resistance. The system ofmeasurement and control measures the capacitance current of power network withhigh precision. When the single phase grounding occurs in electric powernetwork at the instant, the arc suppression coil is adjusted to fullcompensation from high impedance condition in half power frequency period, evenif the output current of the arc suppression coil is equal to the groundingcurrent of it, the residual current is smallest.
The product has the features of large range of capacity control,small humorous（≤2 %）, fast response（≤0.01sec.）,high precision of compensation, no series resonance, high reliability and freemaintenance. It is a kind of ideal equipment to ensure electric power networksafety operation as the upgraded product of existing arc suppression coil, the technical performances reaches the international advanced level.
Otherwise, thecompany has already developed and produced successfully MCR of 7500kVar/6kV, 12000kVar/10kVand 20000kVar/66kV, among them, 20000kVar/66kV MCR will be put into operationin the National Key Project. The MCR technology of the company has reached theinternational advanced level on the aspects of performance index, voltagegrade, capacity, and realized function. It provides effective measures and guaranteeto realize energy saving and consumption reduction in power system, and safeand reliable operation.
- Q:EMP Electromagnetic Pulse
- The EMP has the capacity to damage electrical equipment regardless of the source powering the electrical equipment, especially now that power generation devices depend heavily on sensitive microelectronics.
- Q:if you have worked in engineering consultancy, can you please tell me what are the typical projects you take and what exactly you do to help different firmswhy cant the firms do that stuff themselves , why do they need you badly ?
- I do electrical engineering and do consulting for companies for the design of electrical systems of new plants. What my company and I do is to get the general power requirements for a large building or factory and specify what transformers, wiring, fusing, lighting, and power distribution methods they will need. Because of my education and my experience, I can provide a customer with the correct power and wiring specifications. The companies then can use my specifications to hire large electrical firms to install the electrical equipment and wiring. Firms normally do not do this for themselves because: 1. It is a one-time thing and they would not generally hire some one directly to do this. 2. Many firms cannot legally do this anyway because the state and local municipalities require a state-certified professional engineer and/or engineering company (like me) to design things like this. 3. It would be very costly and inefficient for a company to acquire this capability for a short amount of time. 4. On many types of consultancy, you want to hire another company because you may want a different point of view or perspective on the problem. 5. Many consultants can provide many types of engineering capabilities to bear on a problem, which can be impractical or expensive for companies to hire. Hope this helps Paul
- Q:After all, the whole point of ATEX certification is that it doesn't make a fire. One would think if you can safely use something in an explosive atmosphere you can use it on shabbos. By the same token a shabbos light should be safe to use in an explosive atmosphere.
- When I was in fourth grade, the science teacher taught us the physics definition of work and explained how it differs from the everyday definition of work Much like that -- Jewish legal definitions of Hebrew words do not always line up perfectly with the everyday use of English words that aproximate them. With electrical items, the prohibition of fire is only one of the prohibitions to be aware of for Shabbat -- off the top of my head, there is also boneh (building) and bishul (cooking) On the reverse side -- your logic does not hold in even the most basic English definition. It is only the Karaites that believe there is a Shabbat prohibition of fire, the normative prohibition is on making fire and putting out fire -- thus, there are quite a few devices used on Shabbat that are straight forwardly on fire (well, heck -- just think of the candles themselves!!!) A Shabbat lamp is simply always on - but has some cover to keep the light from bothering. Hopefuly, this whole structure is well insulated (I don't know -- never used one)
- Q:i pods,cameras,nentendos, ect
- right here's a itemizing of prohibited and authorized products from the Transportation protection administration. Airline policies could be extra strict than TSA policies, yet for many visitors - those no longer carrying radioactive isotopes or something like that - the TSA regulations are the proper regulations.
- Q:i am attending college in the fall, actually school starts on the 21st, and my major will be in electrical engineering, i was just fishing around and wondered if anyone could give me, in a nutshell, the basics of this field. since i have already chosen this as my major I do know a little, enough to choose it as my major. i just wanted to know what I might not already know. Give the names of specific jobs that would be of interest after graduation also, if you know any. Thanks!
- Galactic man already gave it all but I just wanted to wish you good luck in your studies. I just became a junior and I'm majoring in EE as well. I wouldn't suggest keeping a certain EE job in mind since you're just starting out. You really won't find what you like until you actually start taking the classes and doing some co-op/internships (if your school has a program like that).
- Q:I wanted to buy electrical products in wholesale from China. I know some companies but to explore more i wanted to know which city can i find electrical products like bulbs, fluorescent tubes, chandeliers, spotlight lighting fixtures.I wont mind if there are different cities each for different products.One more thing i have never been to China.And please don't answer by telling to contact so and so personThank you
- Dongguan City and Shenzhen City in Guangdong Province of China.
- Q:I have a full-time job but would like to dabble in residential electrical work for friends and family. What would I need to do? I would like some kind of formal license and training but don't want to go back to school or commit to any long-term programs. This is in Massachusetts.
- Probably some Massachusetts-made part-time wire cutters . . .
- Q:Also, Does the mean you can dispose of, or collect electronic 'waste' goods?
- The Waste Electrical and Electronic Equipment Directive is an EU wide directive, linked to ROHS compliance: rohs.eu Unless you are manufacturing electronic or electrical equipment, or importing it into the EU region, you do not need to register. Registration confirms that your product meets the required standard and does not relate to any recycling of this product, although all registered companies pay into a common fund to help cover the cost of recycling. The cost to the consumer of recycling should be zero, that is, you should not pay to have your electronics goods picked up for recycling.
- Q:i want to where I can transformator ( i do not know the name)But I whant to there is some equipment the you connetectwith your device it will change the current. And please wherecan I buy and approximatly what is the price?Thank you
- yes u can but u would need a power volt changer to make them work in the usa the power converters cost between 10.00 - 100.00 dollars
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Magnetic controlled automatic tracking tuning arc-suppression coil
- Ref Price:
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- Loading Port:
- China Main Port
- Payment Terms:
- TT OR LC
- Min Order Qty:
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