SZ9-400-20000-35 three-phase oil-immersed on-load voltage-regulating power transformer

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Production introduction

The product conforms to the technical parameters and requirements of China National Standard GB1094 and GB/T6451,and a series of significant innovation is applied in aspects of material,design and structure.It has the features of high efficiency and low loss.It can save a lot of operation cost,and the social benefits are very significant.In conclusion,it is a nationally promoted new product and it is deeply favored by customers.

Installation type:indoor/outdoor type
Installation site:in places without corrosive gases and obvious dusts.

Applicable standards

GB1094.1-2-1996 Power Transformer
GB1094.3-5-2003 Power Transformer
GB/T6451-1999 Technical parameters and requirements for three-phase oil-immersed power transformer

Model designation

Performance characteristics

1.The features of this product are high efficiency and low loss.It can save a lot of operation cost,and the social benefits are very significant.

2.The iron cores are made of the imported high-conduction magnetism,cold-roll,and grain-oriented silicon-steel sheets.The iron cores and windings adopt the vacuum drying and vacuum oil-filling processes,which make the internal moisture down to the very low level.

3.The conservator is hermetically sealed,which make the internal running oil to insolate with oxygen and moisture efficiently.

4.The above features guarantee the transformer does not need do replace the oil during the normal operation,greatly decrease the maintenance cost,and prolong the service life.

Notes for placing orders

Transformer type:rated capacity kVA
Number of phases:three-phase single-phase
High voltage:KV/Low voltage:KV
Frequency:50HZ 60HZ
Tapping range:±4×2.5% ±3×2.5% other
Connection group:Yyn0 Dyn11 other
Impedance voltage:normal other

Main technical parameters of SZ9-M-400~20000/10 series of transformers

Rated capacity(KVA)Voltage combination(KV)Connecting groupidNo-load lossess(W)Load-loss(W)(75oC)Short circuit impedance(%)No-load current(%)Weight(kg)Overal dimension(mm)Gauge(mm)
High voltage(KV)Tapping(%)Low voltage(KV)BodyOilGross weightLength×width×height
±4×2.50.4Yyno or Dynll81543604.01.092532016101810×930×1250660×660

1.Please contact us for the performance parameters,outline dimensions and other importans data for 35kv transformers with bigger capacity.
2.For 8000ka and above,we can also supply transformers with air cooling device according to customer's requirements(SFZ9).
3.The weight and dimensions in table above are only for reference.

Main technical parameters of SZ9-M-2000~20000/35 series of transformers

Rated capacity(KVA)Voltage combination(KV)Connecting groupidNo-load lossess(W)Load-loss(W)(75oC)Short circuit impedance(%)No-load current(%)Weight(kg)Overal dimension(mm)Gauge(mm)
High voltage(KV)Tapping(%)Low voltage(KV)BodyOilGross weightLength×width×height

1.Please contact us for the performance parameters,outline dimensions and other importans data for 35kv transformers with bigger capacity.
2.For 8000ka and above,we can also supply transformers with air cooling device according to customer's requirements(SFZ9).
3.The weight and dimensions in table above are only for reference.

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Q:who is better? iron man or transformers?
If you're asking me what I think is the better filmit's Iron Manhands down! Jon Favreau did an outstanding job! What made Iron Man such a good film were the performances of all the actors involved in the production, the direction, the special FX, etc. (has there ever been a more perfect comic book adaptation?). Also, the film was more grounded in reality than Transformers. I grew up reading the comics and Favreau did an excellent job of taking the abundant source material and making a credible but wholly entertaining movie that appeals to a wide audience. The live-action Transformers moviesuwell, let's just say it disappointed. The animated film from the 80s is superior. Besides, Michael Bay is a pathetic excuse for a movie director. I can't believe he was tabbed to do Transformers in the first place and I'm not happy he's directing the sequel (Lord, why are they putting so many people in this filmI thought it was supposed to be about the Transformersthe robotswho cares about the people?!). If you grew up a Transformers fan like I didand I mean from the beginning back in the early 80s, then you would understand that Bay totally upset the Transformers mythos for his own ends. Yeah, the movie was successful, blah, blah, blahbut it failed to measure up in the minds of many old-school fansand the sequel will likely disappoint, too. As for what would win in a battle, yeah, the Transformers would likely win, though given Tony Stark's resourcefulness, I'm sure he could design something that would negatively effect them. He designed a Hulk-busting Iron Man armor in the comics. Still, we're talking different universes here and never the twain should meet. Iron Man will likely surpass Transformers in total box office receipts and given its critical endorsements (93% positive on Rotten Tomatoes) as compared to Transformers lack of positive reviews (57% Tomato meter rating -- certified rotten!), that makes Iron Man THE winner in my book.
Q:About transformers, can any type of transformer lower voltage without simultaneously raising current??
You have a major misconception. The amount of current out of a transformer is determined by the load. The transformer sets the MAXIMUM current available, but the actual current is determined by the load placed on the transformer. So if you plug a transformer into 120 VAC to get 5 volts AC for a PC, even though the 120 volt AC outlet is rated at 20 amps, that does not mean you get 20*60 amps out of the transformer. The maximum current out of the transformer in the above example is set by the rating on the transformer, say 10 amps, not 1200 amps. And the actual current that flows out of the transformer is determined by the load. Open circuit, it is zero. Connected to its load, it could be 5 amps. And this is where the current ratio comes into play. that 5 amps causes 5/60 or 0.083 amps in the primary. to elaborate further, a 12 volt battery has a 100 amp capability. That means the battery can put out UP TO 100 amps. But the actual current drawn by the battery depends on the load.
Q:What is the meaning of auxiliary transformer, sub-variable and box change
Is a dual power supply, usually with a large transformer used as a common, small transformer used as a backup, when the circuit with the fault, cut off in use, put on the spare, the overall is a dual power supply!
Q:transformer electronic question?
Transformers are used to increase/decrease Voltage and current depending on your requirements.Don;t forget whatever power you put in only will come out, so if you Impress x Voltage, and y Current across a transformer, it either increases voltage, while reducing current, or vice versa, since Power Voltage × Current, therefore, if you are going to increase current, output voltage reduces, and if you increase Voltage, output Current reduces.Here is a transformer picture If you follow this link, you will see a picture of a few transformers, with two windings, and is called a two phase Transformer. There are in general two types of transformers, Step up and Step down Transformers. Step up ones have little primary winding( The winding where you put in you power) compared to secondary windings(The output ).Since electricity has magnetic properties, it starts to Induce the other side, since it has more windings, more Voltage is induced, and since input power output power, if Voltage increases, output current reduces. ex.Input Voltage10V, Electrons that flow 10Amperes Ratio of Primary to secondary Winding 1:2 Output power 20V, Electrons that flow 5Amperes 10 into 10 20 into 5 This is a rough example to explain. There are numerous other factors that are needed to calculate Transformers, such as Impedance, Frequency of Alternating Current, Flux losses, Materials used to laminate the iron core, or any core, and so on. Hope I have helped
Q:three phase transformers pole mounted.?
In order to have a neutral in a delta connected , 3-phase transformer bank, the secondary of the system must be connected in wye or star configuration. The neutral point is grounded in order to offer some protection in the event one of the hot leads is connected to some part of a device housing where you can touch the device. Electrical codes require electrical equipment to be grounded. If the hot wire does touch the chassis of a grounded piece of electrical equipment, the current will flow back to the transformers, causing the circuit breaker feeding the equipment to trip. This removes the danger to anyone touching the equipment. The reason there is no current flow in the ground under normal operation, is there is no connection from a hot lead to ground. There must exist a complete circuit in order for current to flow, TexMav
Q:Transformer turns around the number and how much V is calculated
3, seeking wire diameter What is the current required to output 8 volts? Here I assume 2 am. Transformer output capacity = 8 ╳ 2 = 16 volt Transformer input capacity = transformer output capacity / 0.8 = 20 VA Primary coil current I1 = 20/220 = 0.09A Wire diameter d = 0.8√I Primary coil wire diameter d1 = 0.8√I1 = 0.8√0.09 = 0.24 mm Secondary coil wire diameter d2 = 0.8√I2 = 0.8√2 = 1.13 mm The voltage after the bridge rectifier capacitor is 1.4 times the secondary voltage of the original transformer. Transformer (Transformer) is the use of electromagnetic induction principle to change the AC voltage of the device, the main components are primary coil, secondary coil and core (core). The main functions are: voltage conversion, current conversion, impedance conversion, isolation, voltage regulator (magnetic saturation transformer) and so on. According to the purpose can be divided into: power transformers and special transformers (electric furnace change, rectifier, frequency test transformer, voltage regulator, mine transformer, audio transformers, IF transformers, high-frequency transformers, impact transformers, instrument transformers, electronic transformers , Reactors, transformers, etc.).
Q:How to measure & check the good transformer ?
You should compare the readings and current drawn off load with a similar transformer that is known to be good, do this, Measure the off load current at the primary with the secondary terminals disconnected, all current drawn will be due to hysteresis loss and any shorted turns. Measure the output voltage off load. Do this with both the suspected and the identical 'known to be good' transformer and expect similar results. For a double wound isolating transformer, also check for electrical separation between primary and secondary windings. Should be in the order of megohms.
Q:Why is the nearest transformer?
For residential, the step down transformer for home electricity use is typically a pole top mounted transformer. It may be at the top of a power pole near your residence. Sometimes there may be a pad mount transformer (square metal box) near your home that is used. You may want to look outside your home, and see where the wires coming into your electrical service are coming from. That should tell you where the transformer is. If you live in a newer neighborhood, you may have underground service ( thus no power poles) and the transformer may not be visible. It would likely be close by in an underground electrical vault. There is a picture of a pole top transformer in the attached article below:
Q:This transformer outputs AC or DC
If you have 220V output voltage, then the peak voltage of the waveform is 220 * 1.414 = 311v, then your rectifier at least reverse voltage of not less than 400V, then the voltage is not more than 400V The Look at your transformer current, if the full load current is 7A, then your rectifier load capacity should not be less than 10A. So the main consideration is the rectifier voltage and current these two aspects.
Q:What are these electrical transformers?
I'm not an electrician, but I have a few ideas. First, Do these lights use standard incandescent bulbs, or something else? If they are plain ole incandescent bulbs, I'm left wondering what is going on. If I understand you correctly, each of the three lights has an old bakelite electrical box with its own transformer, with regular wiring coming into it, and low voltage coming out of it feeding one light fixture below. If thats the case, then you are going to remove the transformers along with the fixture. However, if its one transformer that feeds the three fixtures, then you have a low voltage light system and will want to remove the fixtures and transformer and run new electrical wire (Romex) to each of the three new fixtures. The previous answer was correct in that most houses only have one low voltage transformer that powers the doorbell buttons and chime(s). Some homes back then had intercom systems and/or security systems that would require a transformer. Another point: check the smoke detectors. If they are over ten years old, replace them. They only work for about 10 years (even the new ones).

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