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

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Supply Capability:
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:50KVA transformer each phase current maximum band
Normal current does not exceed 72A per phase current. Of course, in the event of an accident or to strengthen the transformer cooling can be short-term overload operation.
Q:What is the role of the pebbles in the transformer base
Transformers base need a pool around the pool inside the pebbles, the role of the pool called the reservoir, that is, when there are accidents, transformer oil leakage, the pool can store oil to prevent the oil flow everywhere, the pool filled with pebbles, in order to Safe, on the one hand is to prevent oil burning. As well as for the convenience of the transformer body above, the following is better than a deep pit convenient? Transformer oil pit volume is calculated in accordance with the transformer oil, there is a certain depth.
Q:Which transformers belong to special transformers
Transformers are generally used for AC voltage conversion if used for other purposes such as changing the frequency of the power supply, rectifying the power supply of the equipment, the power supply of the welding equipment, the electric power of the furnace or the voltage transformer, the current transformer. These special-purpose transformers are known as special transformers. Because of the working conditions and load conditions of these transformers, they can not be calculated by the general transformer calculation method.
Q:Taiwan, Taiwan, the concept of transformer
Transformer refers to equipment; Taiwan change is installed in a place of the transformer, is specifically installed, running a transformer; Taiwan area refers to the regional range of variable power supply. Metering point is for the two sides to determine the installation of electric energy meter position, in general, the measurement point should be set at the demarcation point of property rights.
Q:Can the transformer be replaced with a component?
Transformers are not only able to buck and boost, but also from the role of isolation. In fact, the circuit with the inductance of the circuit can also buck and boost, but there is no isolation of the role, there will be dangerous to use. Resistance can also buck, but the efficiency is low, the current is small, there is no isolation effect.
Q:Three - winding transformer winding problem
2, from the manufacturing cost considerations, the transformer core is grounded. Low voltage coil inside, the coil on the core of the insulation distance can be smaller. So that the sum of the main insulation dimensions of the three coils will be smaller. The weight of the entire transformer, the volume is relatively lower than the - low - high arrangement to be smaller.
Q:Three-phase transformer how four ways to connect it?
Three-phase transformer solution Yy Dd Yd Dy these four connections each connection there are many connections such as Yy-10 According to the original side of the different phase has a different solution, and whether the grounding (N) connection is also different
Q:How do I select a transformer connection group?
Connection group can not be arbitrarily selected, depending on the primary transformer connection group. If the higher-level transformer for the star angle, the next level on the election star angle
Q:Transformer voltage range of 10.5 ± 2 * 2.5% kV and 10.5 ± 5% kV What is the difference
Two transformers of the same voltage range, but the tap is not the same, the previous one is 5-speed regulator, select the relatively small, more adaptable. The latter is the third gear regulator, sometimes with the actual time required to have the voltage difference, mainly to see that your load is stable and unstable. These two kinds of voltage regulator for the basic price of the transformer has no effect.
Q:Transformer if the boost and buck current will change?
You here is actually a rated power problem, the transformer rated power is determined by the core size and winding diameter. Actual current X The actual output voltage can not be greater than the rated power otherwise there is a possibility of damage, which is the principle. If you are a constant load, the actual current will increase at the time of boost, and the actual current will decrease when it is lowered.   Disengaged the actual use of the transformer, the transformer as a boost when the input current must be greater than the output side of the current, the transformer as a buck when the input current must be less than the output side of the current.

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