Switch Power Supply Transformer System 1

Switch Power Supply Transformer System 2

Switch Power Supply Transformer

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

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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Widely used in soya bean milk machine, air purifier, air conditioning, solar energy meter, humidifier, meter, smart meters and other household electrical appliances.

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From design to develop to the use of raw materials, experiments were carried out, using low quality silicon steel sheet, with little no-load loss, high efficiency, temperature rise low cost, easy installation etc..

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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: A 120 kVA, 7000/277 V (What does this rating mean) distribution transformer has the following resistances and reactances: Rp 5.5 ohms Xp 6.5 ohms Rs 0.007 ohms Xs 0.008 ohms Rc 55 kohms Xm 15 kohms The excitation branch impedance are given referred to the low voltage side of the transformer: a) What's the equivalent circuit of the transformer referred to the low voltage side b) What's the the per unit equivalent circuit c) Assume that this is supplying rated load at 277V and 0.89 lagging power factor, What is the transformer input: 120 kVA, 7000/277 V (What does this rating mean) Primary voltage rating: 7000 V, secondary voltage rating: 277 V, rated load: 120 kVA It is unclear whether this is a single-phase or three-phase transformer. You probably need to assume it is single-phase. The equivalent circuit of a 3-phase transformer is analyzed as one of three single-phase transformers that could be connected to make the equivalent Y-Y three-phase transformer. The secondary voltage, 277 V, is the line to neutral voltage for a 480 V, wye distribution system. That is a USA standard system voltage. The primary would be 12,124 V L-L, 7000 V L-N. That would a reasonable primary distribution system voltage. Referring the circuit to the low side means changing the primary component values to the equivalent secondary values and moving the ideal transformer to the primary side of the circuit as shown below. To change the primary impedance values, multiply by (Sec V/Pri V)^2.

Q: How do transformers work detailed descriptions please. Also how are the voltages stepped up or down?: Transformers can e used only for A.C the fluctuating current in the primary coil produces a magmetic field.this magnetic field by mutual induction makes a current in secondary coil The no:of turns in primary and secon determines thr rating of transformers more the no:of turns more magnetic field will be produced in primary and less the no:of turns in the secon lesser will be the current induced and vice versa For more details visit

Q: 150KVA transformer can withstand much power, how to calculate: 150KVA transformer load capacity is (150 * cosa) KW cosa is the load power factor

Q: anyone else see the trailor for this movielooks kinda goodthough, it may be were the transformers are bad guys, i dunno: My friend andrew was an extra in this movie

Q: I like to construct an autotransformer . Input voltage .240Vsingle phase. to use in a system whose operation voltage is 120v. 15 amps 1000 watts can some suggest me as to how i should proceed in calculating size of core ,winding turns, wire sizes etc , now i have 4 inches square E type transformer core . I removed all windings from it. It was used in a microwave .: If the microwave transformer has a 240 volt primary winding, count the turns and use the same number of turns for the autotransformer. If it has a 120 volt primary, use twice as many turns as the original transformer. Half of the turns will carry only the primary current. The wire for those turns should be about the same size as the original wire if the primary was 240 volts or half that size if the original primary was 120 volts. The remaining turns need to be about three times the size of the first half of the turns.

Q: The specification states that the 35KV substation is capable of obtaining the power supply after the main transformer is powered down. Therefore, in this case, the transformer used should be connected to the power supply side of the circuit breaker. My question is that the main transformer which, the main transformer is not connected to the power supply side of the circuit breaker?: 1, the so-called main transformer or (plant) with transformers are transformers, but according to their use of different names. The so-called main transformer: generally in the power plant or substation are so called, its function is for the system through the required level of power transformer; the so-called (factory) with the transformer is inside (power plant interior) Electrical equipment to provide power transformer. 2, the (plant) with the transformer power supply connected to the main transformer on the same bus, and some received another external power supply, so that when the main transformer can be maintained when the maintenance (plant) to continue to have power!

Q: i want to know the actual lyrics for the Transformers theme that was re-covered by Mute Math. i heard that they changed some of the lyrics but i would like to know the exact changes, thanks.: i hope this helps - Something evil's watching over you Comin' from the sky above And there's nothing you can do Prepare to strike There'll be no place to run When your caught within the grip Of the evil Unicron Transformers More than meets the eye Transformers Robots in Disguise Strong enough to break the bravest heart So we have to pull together We can't stay worlds apart To stand divided we will surely fall Until our darkest hour When the light will save us all Transformers More than meets the eye Transformers Robots in Disguise Transformers Autobots wage their Battle To destroy the evil forces Of the Decepticons It's judgment day and now we've made our stand And now the powers of darkness Have been driven from our land The Battle's over but the war has just begun And this way it will remain til the day when all are one Transformers Transformers Transformers Transformers More than meets the eye

Q: 1.) What is the function of a transformer?a.) It is a device that can change the voltage of an AC supply.b.) It can change a low voltage supply into a high voltage supply or vice versa.c.) It is a device used mainly to change AC into DC.d.) A and B are correct.2.) What is the function of a transformer at a power station?a.) To convert DC into ACb.) To produce very high voltagesc.) To produce the currents in the power linesd.) None of the above.: A transformer either steps-up or steps-down the voltage of an AC circuit at the cost or gain of current (PIV). They are used to enable electricity to travel very far distances. While a high current will also come with a reduction of power due to the resistance of the miles of wire, a low current with a high voltage will be affected very little (VIR). A transformer will convert the high current power from the power plant to low current and high voltage so that the electricity can reach further. When this high voltage reaches neighborhoods, it goes through multiple transformers to step it down to the conventional 120V power supply. Since transformers only work with alternating current, they have nothing to do with direct current. Therefore, question 1 is D and 2 is B.

Q: I bought a Neon Sign Transformer over OKorder and for a while it worked great. I used it to power a Jacobs Ladder (I wired the transformer straight to the Jacobs ladder). However, now the transformer will turn on the jacobs ladder but after a couple of seconds it will shut off and sometimes make a buzzing noise. What is wrong with it and how can I fix it?: You have 2 problems there. 1. Voltage; 2. Frequency. In this case, both are against you. NZ has 50Hz mains frequency at 240V. If you are really lucky, the transformer will have dual windings on the primary, or a 220/240V. tap. If you don't know what you are doing, consult an electrician or electronics tech. to have them check whether it is dual voltage, and change it. The frequency difference can mean a little less efficiency, the transformer may get a little warmer in operation. But it should be fine. You only other options are to replace the transformer (get one for dual voltages?), or use a 240/110V stepdown transformer ahead of it. The stepdown transformer must have a sufficient power rating for the job.

Q: What is a transformer?: First talk about the buck, usually we use a variety of voltage, such as life lighting is 220V, industrial safety lighting is 36V, welding machine voltage also need to be adjusted, which are inseparable from the transformer, the transformer through the main and auxiliary coil electromagnetic Mutual inductance principle, can reduce the voltage to the voltage we need. In the process of long-distance voltage transmission, we need to raise the voltage to a high, in order to reduce the voltage loss, usually rising to several thousand volts or even tens of kilovolts, which is the role of the transformer.

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