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

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1000sets set/month

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Product Description:

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
Altitude:≤1000m
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
4006
6.3
10
±4×2.50.4Yyno or Dynll81543604.01.092532016101810×930×1250660×660
50097051801.0115040019801890×1010×1350660×660
630126063804.50.9136046023201980×1040×1400820×820
800150078000.8156052026702030×1100×1425820×820
10001740107200.7173062030002100×1160×1500820×820
12502120127500.6202071535202180×1180×1600820×820
16002700152000.6244589043452280×1260×17201070×1070
20002790191705.50.62780105050102360×1350×18001070×1070

Note:
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
200035
38.5
±3×2.56.3
6.6
10.5
Yd112850200006.51.002780165061402750×1410×28001070×1070
25003300217001.003300180070802800×1430×28501070×1070
31504000260007.00.903700191073002690×2020×29401070×1070
40004900305000.904350217085503180×2380×31001070×1070
50005800350000.855200245099503250×2500×31501070×1070
6300YNd117000385007.50.8565002740118003370×2600×32901070×1070
80009900427000.7577703320145003420×2740×33501475×1360
1000011700505000.7591003850168103350×2830×34001475×1360
1250013770598008.00.70106304640198003680×2950×35001475×1475
1600016570720000.70133005360233003800×3080×6001475×1475
2000019580850000.60174507100308004000×3250×38001475×1475

Note:
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:The specific steps and procedures for installing the transformer
Hello, you said it should be the frequency transformer installation steps it. Steps are as follows: first equipped with skeleton Oh, and then use the winding machine around the enameled wire, and then add the fuse (if the customer specified to), then dip tin, dip tin is the dressing, the package is finished shake the film, shake the film is Plus shell, such a transformer to do a good job. I hope I can help you.
Q:Can i used scott t transformer with welding machine ?
When you say you have a 2 phase welding machine, that is not enough information to answer your question with a reasonable margin for success. If your welder is indeed a two phase machine, where the phase angle relationship between phases is 90 degrees and not 120 degrees, and you have a three phase service whose phase relationship is 120 degrees between phases, it is possible to build a Scott T transformer bank that will give you a 2phase 4 wire system. You will need two transformers. One of the transformers will need a center tap on its primary winding brought out and the other transformer will have to have a tap at 86.6% of full winding voltage brought out of its primary windings. Also you will only be able to get about 58% of the nameplate capacity from the transformers for the same reasons you get 58% from an open delta transformer connection for three phase. These will be special made transformers, unless you are winding them yourself, and will be expensive. I suspect they and the special connections you will have to make, will exceed the cost of a new 3 phase welder. Last but not least, if indeed your welder draws 40 amps per phase using a three phase circuit you presently have, other alternatives present themselves. Such as a larger three phase service to allow for the 40 amp load. Also you might consider at least one transformer with a center tap primary and the second one without the 86.6% tap. The secondary will be slightly out of balance due to the higher voltage on one set of secondary (about 14% higher) but it may work for the welder. Hope this helps, Newton1Law
Q:What is the meaning of the transformer without excitation?
General power transformers are equipped with tap-changer, can be carried out in a small range of voltage regulation to meet the grid voltage fluctuations, as far as possible to the transformer output side of the voltage stability. There are two ways: 1, on-load regulation: it can be in the transformer with load, automatic or manual tap position switch. Because the switch is completed in an instant, so it will not affect the normal operation, that is, once, the second side are not power failure can be carried out under the circumstances. 2, no excitation voltage regulator (sometimes mistakenly said no load voltage regulator): is to be in the primary side and the secondary side are power outages, put the isolation switch to open the case, to ensure that the transformer in the absence of electricity, adjust the tap position , The regulator. 3, in the past, it is possible from the English No Load (no load) or On Load (contained) translated over, said to be no load regulator. This is not accurate, it is easy to be misinterpreted as: the transformer can be in the absence of load (current) when the regulator, without the need to control whether the power side. This is very dangerous, no excitation voltage regulator, it is very accurate, to the transformer side, the secondary side are power, in the absence of any excitation circumstances, to operate. 4, therefore, our professionals must change No - Load to Off - Eirecuit - Tap - Changing.
Q:Question about transformers?
The number of turns is proportional to the voltage on that side. So if you connect a voltage to the side with 100 turns, and the other side has 1000 turns, you will get out 10 times the voltage you put in. However, the current available is only 1/10 as much, so the output power is the same as the input power (wattsvolts*amps). To transfer power efficiently, especially at low frequencies, both coils of the transformer are wound around the same piece of magnetic material. All wire has some electrical resistance. When current flows through it, voltage is produced (voltsamps*ohms), and the combination of voltage and current produces heat. The wires making up the coils are covered with insulation, and there is insulation between the coil and the core, and between the two windings, but the voltages may be 100,000 volts or more, and this is enough to cause sparks between windings or from the windings to the frame if there is a spot with no insulation.
Q:What is the transformer absorption ratio (R60 / R15)
Absorption ratio = R60 〃 / R15 〃 For the same insulating material: the moisture or defective absorption curve will change, so you can determine the insulation curve based on the insulation is good or bad, usually in megger in 15 seconds and 60 seconds of the insulation resistance ratio (This is the absorption ratio, expressed by the K value), because the insulation of the degree of moisture increases, the leakage current increase than the increase in the starting value of the absorption current is much more, expressed in the insulation resistance is: megger in 15 seconds and 60 seconds of the insulation resistance is basically equal, so the K value is close to 1; when the insulating medium is dry, because the leakage current is small, the current absorption is relatively large, so the K value is greater than 1. Experience: When the K value is greater than 1.3, the insulating medium is dry, so that by measuring the absorption ratio of the insulating medium, it is possible to determine whether the insulating medium is damped and K is a ratio which eliminates the geometric dimensions of the insulating structure , And it is the same temperature measured under the value, without going through the temperature conversion, the comparison of measurement results is very convenient.
Q:Help on physics-transformers?
It transforms voltage and current from the values that exist at the primary to the values that exist at the secondary. 2. It steps up voltage. 3. Ideally, the input and output power would be the same, that is the product of voltage and current would be the same even though the voltages and currents are different. I practical transformers there is resistance in the wire and energy loss in the core so that the output power is slightly less than the input power. The difference appears as heat in the transformer.
Q:EET transformer question?
a) the turns ratio of the transformer is 20 to1 so to refer an HV side impedance to the LV side you divide it by the square of the turns ratio which in this case is 400 which gives: 0.001+j0.00025 ohms. b) There's a certain amount of freedom in doing this for you may define the per-unit impedance base however you want. It is however rather usual to define it as VA / I^2. Here I 5000/2400 2.083 amps So base impedance HV side 5000/2.83² 624 ohms making the given impedance (0.4+j0.1)/624 p.u. This p.u. value should be the same on either side of the transformer. Nice to see you around again but do I notice you haven't improved at saying please when you want someone to do something for you for nothing. If you can't learn that there's not much use in learning all these technical skills. You're going to remain a clumsy oaf!
Q:Transformers. Optimus Prime?
Q:Transformers Animated Season 3?
That would suck sooooo bad if it is cancelled. All that build up in the first season with super villains and no Megatron and like, 3 Decepticons till the end of season 2 for what! To take it all away just as its getting good and finally setting up a full on Autobot Decepticon war There better be a season 4 or this series will go in the forgotten bin with Robots in Disguise as another series that took forever to set just for 1 big battle then that's the end. But if it is the end then that will teach the writers for holding out on what fans really want. I can not sit through season 1 or 2 again, except the season 2 finale.
Q:Transformers and Efficiency?
Q1. Let the number of primary turns Np; number of secondary turns Ns. Let the primary voltage Vp; secondary voltage Vs. Then fundamental transformer theory gives us: Vp/Vs Np/Ns. So: Ns (Vs/Vp).Np i.e.: Ns (220 / 11,000).3200 64. The turns ratio is 50:1 Q2. The product of volts and amps is called the V-A of the transformer: volts x amps. An ideal transformer would generate zero losses in transferring electrical energy from primary winding to the secondary winding. But there is no such thing as an ideal transformer: the transference of energy means that some energy gets lost: in heat, eddy currents and hysteresis losses. For this Q, the input VA 220 x 3 660 V-A, and the output V-A 110 x 5.6 616 V-A. The V-A efficiency (V-A out) ÷ (V-A in) 616 / 660 0.933 93.3 % N.B. This is not the same as the watts efficiency, power in ÷ power out: the V-A efficiency does not take power factor into consideration.

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