Low Frequency EI In-line Transformer

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Loading Port:: Tianjin

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Min Order Qty:: 1000 unit

Supply Capability:: 50000 unit/month

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Products can be customized according to customer requirements!

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Large, small household electrical appliances, small power industrial products, instrumentation and other industries.

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Wide range, high stability, easy installation, low noise. The coating lines were used for the F grade 155. Silicon steel sheet used in domestic famous brand products. Automated processing and production of shipments to ensure product consistency while improving the quality level.

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Company have 21 years of business history, set research and development, production and sales as one of professional transformer manufacturing enterprises, also is transformer industry of Shandong Province CQC certification (the original Great Wall certification system, certification time longest enterprises (14 years), mainly produce and sell all kinds of transformer products, including: (transformer Division) three-phase dry type transformer, intelligent three-phase servo transformers, BK\JBK1\JBK3\JBK5 control transformer, toroidal transformer, (small transformer Division) pin, potting type, lead type power transformer series products. (high-frequency transformer Division) EE series, EFD series, PQ series, filter, I-inductor, loop inductance etc..

We are able to supply various types of terminal blocks according to clients' requirement,Please contact us so we can offer you the best quality,competitive price and timely delivery.

Q: TN-S system in the transformer neutral point that pe line and n-line neutral point how to take? N line and pe line in the neutral point on the connected, and then ground the same ground? Or that n line from the neutral point out of their own then a pe line then one after another? If the neutral point out of the ground, in the three-phase imbalance when the n-line current?: TN-S way power supply system It is the work of the zero line and dedicated protection line PE strictly separate power supply system, N line and PE line in the transformer working ground once separated, not to re-connect. Called TN-S power supply system. The TN-S power supply system is characterized as follows. 1) When the system is running normally, there is no current on the dedicated protection line, but there is an unbalanced current on the working zero line. PE line to ground no voltage, so the electrical equipment metal shell connected to zero protection is connected to the dedicated protection line PE, safe and reliable. 2) The working zero line is used only as a single-phase load circuit. 3) Dedicated protection line PE is not allowed to break, but also not allowed to enter the leakage switch. 4) the use of leakage on the trunk protection, the work of the zero line shall not have repeated grounding, and the PE line has repeatedly grounded, but not through the leakage protection, so TN-S system power supply lines can also be installed on the leakage protection. 5) TN-S power supply system is safe and reliable, suitable for industrial and civil construction and other low-voltage power supply system. In the construction work before the "three links and one leveling" (Dentsu, water, road and ground level - must use TN-S way power supply system.

Q: What is the difference between the inverter and the transformer?: The inverter is based on a set of thyristor inverter, learn SCR inverter AC speed control circuit, is this principle. But in its protection circuit, variable frequency drive and so are controlled by the microprocessor, the input command, the output control can display. It is the implementation of the inverter circuit, the internal procedures are CPU, RAM, ROM storage and instructions, but also through the button for some functions of editing. In fact, is reliable output of the exchange of equipment he wants to ensure that the output voltage frequency are qualified Transformer is to change the voltage of the device is like 220 kV substation to 110 kV, 10 kV and then to 220 volts that we usually use the electrical conversion equipment.

Q: I have a National refrigerator which runs on 110 volts . Since the local voltage supply in my country is 220 volts, my refrigerator has been powered by a step down transformer for the last many years and it was working fine. But now the transformer overheats, emits smoke and burns out. I have got it rewound many times but the same problem persists and the transformer burns after a few weeks . What might be the problem?: You need to determine the actual load from your refrigerator, and compare it to the rating of the transformer. Most step-down transformers that one human being can carry without strain are rated at perhaps as much as 1,000 watts. Which is enough to handle the typical refrigerator while it is running, but not, perhaps, when it starts. A typical refrigerator uses between 700 and 1,100 watts, with a surge of between 1,400 and 2,200 watts when it starts. So if your transformer is marginal, and the unit is running more (summertime) or the door gasket is worn or anything similar, you could be overloading your transformer. You also state you have had it rewound - unless the rewinder uses the proper gauge wire, wrapping material and stabilzes the new windings with the correct varnish and epoxy, a rewind will not begin to last as long as the original. And if he/she shorted you a few coils, you will get the correct ratio - but not enough capacity. Just as a general rule-of-thumb, when it comes to motor-loads such as heavy appliances, if you need to use a step-up/down transformer, it should be rated at least at 200% of the steady-state load of the unit. 250% is better. Good luck with it.

Q: Guys can you tell me that how can I calculate transformer winding?Example:- I need (12volts, 4Amps, 50Hz on Secondary's side of transformer and give 230volts 50Hz on Primary's side of transformer) how I calculate the wire's number of turns? In this case I can give different values of current like 1Amp, 2Amps, 3Amps etc on Primary's side of transformer. But I need constant 12volts, 4Amps, 50Hz on secondary. So how can I calculate.Please give an answer with an example basis on (0-12) transformer.: As others said, only worry about the voltage ratio. That determines the turns ratio. Current doesn't enter in to this equation yet. The minimum number of turns on the primary is dictated by two things, the saturation flux density and magnetizing inductance. Flux density is proportional to the applied voltage, inversely proportional to frequency and effective area of the core. You'll need to know the saturation limits for the core you are using. You also need to have a minimum numbers of turns to minimize the no-load current which relates to magnetizing inductance. My rule of thumb is the inductive reactance must be 5x the maximum expected load resistance, however, for a AC mains transformer, this is often a hard number to quantify since the load can be near zero. Next is wire size. You will need to consider proximity effect losses as well as DC losses. You'll find that there is an optimum wire size for the windings, but for a 50Hz transformer, you'll probably use a wire diameter smaller than optimal for a low power transformer. I suggest reading about this in Ferrites for Inductors and Transformers by Snelling and Giles. You may need to make compromises to meet your needs. This is where the current supplied by the transformer comes in to play, maximum heat loss expected. While making your own transformer is educational, for power mains transformers, you are better off buying one or scrapping it from an old piece of equipment.

Q: Hi:I found a 10,000 WATTS STEP UP TRANSFORMER.Following are its characteristics: 1- 10,000 Watt Maximum Capacity Heavy-Duty Continuous Use Transformer. 2- Converts 110/120V upto 220/240 VoltsWhat will be its input?I means which battery or Generator i have to use for its input?Is it good idea to use that transformer to supply electricity to 1 house?: input is 110~120 v i dunno about the power rating cuz its supposed to be rated in KVA which is the total active and reactive power, u r saying watts which is only the active power!!! a transformer cannot be loaded above 85% of its rating, it wont be safe! u cant transform battery electricity, cuz its DC, u need AC, my advice to you forget about the transformer and the generator and forget about electricity its fatal, knowledge is not enough, precautions and practice is wt this field is all about. consult any electrical engineer u know.

Q: I read something somewhere once about using small mains transformers as substitute speaker transformers in valve circuits.Suppose I have a 6-0-6V transformer with a 240V primary. That gives a 20:1 turns ratio. So if the secondary is putting out Vs volts at Is amps into 8 ohms, then (neglecting losses) the primary will have 20*Vs volts across it and Is/20 amps through it. But we know that Is Vs / 8; so the primary will appear to have an impedance of (20 * Vs) / (Vs / 160) 3200 3.2k ohms.Am I thinking right? Or will the presence of DC in the primary ruin everything?I'm thinking of using an ECL82 (aka 6BM8) for my first project, as that has both a triode and a pentode with separate cathodes and seems to be available still. Is this a good choice?: The primary is the one that needs the split winding, not the secondary. So you would need a 240-0-240 transformer. Possibly a transformer designed for 120 or 240 volt operation, so you can connect it as a 120-0-120 volt primary. The secondary, where the speaker is connected, would be the 6v or 12v winding. I lost my tube manual (tossed it) long ago. But from memory, I'd use 6L6s for the drivers, they should still be available, and have a lot of power. How well will this work? Don't know. give it a try. .

Q: I need to find out.I am a huge Transformers fan.: You can't be a real fan if you haven't watched the original animated series. The movies are crap, they just have nice special effects.

Q: Hello everyoneA 240-110 stepdown transformer is used with quite a lot of equipement in my home and I have recently become a bit concerned about the effects that they have on the equipement.Thanks to some web page I stumbled across saying that transformers can 'overheat' your equipement etc.And since most transformers aren't made by any big name brands, there really isn't a way to tell if the one in posession is a 'high quality' one or not.So my question is, do transformers actually damage your equipement?Anyone have expertise in this area?Thank you very much.: The only problem I have seen or heard of with transformers is. A Delta transformer has a wild leg, meaning one leg has more or less current that the other legs. Were as with a ( Y) transformer all legs are equal. The only time you will have trouble with a transformer is when it does not supply enough power for the equipment it is supplying. This causes low voltage and high ampage which burns out equipment. Most all power company's are now using (Y) transformers. If you have any question, call your power company, or have an Electrician check your power.

Q: By applying ohms law in the secondary circuit, IV(stepped up)/R , a stepped up voltage would result in an increase of current, i am aware that the step up transformer steps down current, but it is the secondary circuit that determines the current draws (ohm's law), and the primary current is multiples of itSo ?!!!!: E IR P (watts) I^2 R or E^2 / R there have to be TWO transformers. gererator medium V, I first step, up, Hi V low I, Transmission loss low; low I^2 x R line Second step, down V, Low (220 or 110) V; High I, 50 to 100 amp for house hold. high I on motors and lights, high heat loss. high I needed for motor torque. edison had DC, did not understand AC math DC required huge I in transmission lines and limited line lenght to a few miles at most. due to I^2 R loss. Without complex number math for AC Electrical calculations we would not have the same technology that we do have, or radio. Math is the queen of science, Nerds rule

Q: Transformer stop power operation, the neutral point must be grounded: Transformer stop power operation, the neutral point must be grounded. Because China's 110KV transformer is mostly neutral grounding system, the main transformer neutral grounding switch, in order to protect the sensitivity of the protection device, the main transformer neutral grounding switch in the operation often open; but in the main transformer operation , In order to prevent the operation of the over-voltage "affect" the main transformer insulation, it must be closed ground switch. For the side of the power supply of the power transformer, when the switch is not full-phase pull, at the time, if the neutral point is not grounded the following hazards: (1). Transformer power supply side of the neutral point to ground voltage rise up to the maximum phase voltage, which may damage the transformer insulation; (2) Transformer between the high and low voltage coils, this capacitor will cause high voltage to the low voltage "overvoltage";

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