Oil-immersed power transformer of 35kV

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Oil-immersed power transformer of 35kV


1.    Product

S9 series power transformer of 35kV is mainly used for the transmission and distribution in the power system of voltage level 35kV and rated frequency 50-60Hz, the capacity of it is 50-31500kVA. The iron core adopts silicon steel sheet with high permeability, full-oblique joints, no punching, and colligated and  taken up with semi-dry epoxy fiberglass banding. The fuel tank has three types of radiators: flat tube type, corrugated type and chip type.  The 800kVA above transformers  are equipped with gas relay, pressure relief valve, oil tank with diaphragm and remote thermometer components.

The transformers of 3150kVA and above are equipped with oil refiner.  The characteristics of products are low loss, low noise, save power and so on.


SZ9 series on-load-tap-changing power transformer of 35kV is equipped with tap changer, the voltage regulating range  of it is ± 3 × 2.5%.  The voltage adjustment  can be controlled by manual or automatic through control box. The structures,performances and characteristics of the transformer are as the same as the power transformer of S9 series for 35kV.


The products conform with the GB/T6451-2008 standards.


2.    Technical parameter


35kV S9 series distribution transformer technical parameter

Model

Rated Capacity

kVA

Rated voltage

kV

Loss

W

Impedance of short-circuit%

No-load current%

Label number of connecting group

Weight

kg

Outside DimensionL x W x Hmm

Gauge

mm

HV

LV

No-load

load

Body

Oil

Ttotal weight

S9-50/35

50

38.5±5%

35±5%

 0.4

0.21

1.27/1.21

6.5

2.0

Yyn0

Dyn11

345

260

820

1140×955×1760

550/550

S9-100/35

100

0.29

2.12/2.02

1.8

408

390

1070

1180×1070×1910

550/550

S9-125/35

125

0.34

2.50/2.38

1.7

415

470

1100

1180×1090×2000

550/550

S9-160/35

160

0.35

2.97/2.83

1.6

423

555

1295

1180×1100×2035

550/550

S9-200/35

200

0.43

3.50/3.33

1.5

524

655

1540

1260×1150×2075

550/550

S9-250/35

250

0.51

4.16/3.95

1.4

550

825

1755

1330×1200×2155

660/660

S9-315/35

315

0.61

5.01/4.77

1.4

640

945

2010

1390×1250×2220

660/660

S9-400/35

400

0.73

6.05/5.76

1.3

740

1125

2390

1720×1260×2285

660/660

S9-500/35

500

0.86

7.28/6.93

1.2

805

1289

2710

2045×1290×2415

660/660

S9-630/35

630

1.04

8.28

1.1

885

1455

3040

2155×1320×2250

820/820

S9-800/35

800

1.23

9.90

1.0

1050

1800

3700

2265×1340×2700

820/820

S9-1000/35

1000

1.44

12.15

1.0

1335

2115

4510

2495×1380×2885

820/820

S9-1250/35

1250

1.75

14.67

0.9

1445

2610

5045

2595×1410×2910

1070/1070

S9-1600/35

1600

2.12

17.55

0.8

1490

2840

5740

2680×1590×2970

1070/1070

Note Load values before / are for  Dyn11 connection and values after /” are for Yyn0 connection.


35kV no excitation voltage regulating power transformer technical parameter


Type specification

Rated Capacity

kVA

Rated voltagekV

Loss

W

Impedance of short-circuit

%

No-load current%

Label number of connecting group

Weightkg

Outside DimensionL x W x H

mm

Gaugemm

HV

LV

No-load

load

Body

Oil

Total weight

S9-800/35

800

38.5±5%

35±5%

3.5 6.3 10.5

1.23

9.9

6.5

1.0

Yd11

Ynd11

1150

1800

   3900

2265×1340×2700

820/820

S9-1000/35

1000

1.44

12.15

0.9

1335

2115

4510

2495×1380×2885

820/820

S9-1250/35

1250

1.76

14.67

0.8

1445

2610

5045

2595×1410×2910

1070/1070

S9-1600/35

1600

2.12

17.55

0.7

1490

2840

5740

2680×1590×2970

1070/1070

S9-2000/35

2000

2.72

19.35

0.6

1574

3280

6410

2690×1620×3100

1070/1070

S9-2500/35

2500

3.20

20.70

0.56

1885

3860

7695

2730×1900×3000

1070/1070

S9-3150/35

3150

3.80

24.30

0.56

2145

4610

8980

2660×2900×3100

1070/1070

S9-4000/35

4000

4.52

28.80

0.48

2270

5330

10060

2800×2865×3365

S9-5000/35

5000

5.40

33.03

0.48

2580

6330

11670

3460×2940×3430

S9-6300/35

6300

6.56

36.90

0.42

2840

7440

13430

3800×2770×3355

S9-8000/35

8000

9.00

40.50

0.42

3500

9650

17200

4400×3000×3520

S9-10000/35

10000

10.88

47.70

0.40

4400

12200

21000

3800×3550×3750

S9-12500/35

12500

12.60

56.70

0.40

5000

13740

24500

4500×5650×3900

S9-16000/35

16000

15.20

69.30

0.40

5520

16800

27800

4800×3700×4050

S9-20000/35

20000

18.00

83.70

0.32

5900

19020

31100

5240×3830×4040

S9-25000/35

25000

21.38

99.00

0.32

7200

23400

37600

5520×3800×4460

S9-31500/35

31500

25.28

118.80

1.0

7660

26080

42200

5660×3800×4590



35kV  2000~12500kVA load voltage regulating power transformer technical parameter

type Specification

Rated Capacity(kVA)

Rated voltage

(kV)

Loss (kW)

Impedance of short-circuit(%)

Label number of connecting group

Weight(kg)

No-load current

A

No-load

Load

Body

Oil

Total weight

SZ9-2000/35

2000

35

2.88

20.25

6.5

Yd11

2.9

20.25

0.9

0.80

SZ9-2500/35

2500

3.40

21.73

3.44

21.74

0.9

0.80

SZ9-3150/35

3150

38.5   35

4.04

26.01

7.0

4.09

26.0

0.81

0.72

SZ9-4000/35

4000

4.84

30.69

4.95

30.7

0.81

0.72

SZ9-5000/35

5000

5.80

36.00

5.85

36.0

0.77

0.68

SZ9-6300/35

6300

7.04

38.70

YNd11

7.02

38.7

0.77

0.68

SZ9-8000/35

8000

9.84

42.75

7.5

10.0

42.7

0.68

0.60

SZ9-10000/35

10000

11.60

50.58

11.7

50.6

0.68

0.56

SZ9-12500/35

12500

13.68

59.85

8.0

13.77

59.85

0.63

0.54



Q:i would like to know how transformer tap changer operate to vary the output voltage. And also why is always connected to the high voltage side of the transformer.
Thjey are 2 types on load tap changers Off load tap changers High voltage means low current. Less burning of contacts and sparks!
Q:Do not all change the pressure? What is the difference?
The inverter is a DC power supply into AC power, and the transformer is a kind of electromagnetic induction principle to achieve the electrical conversion of electrical equipment, it can be a voltage, current AC power into the same frequency of another voltage, current Of AC power. Simply put, the inverter is an electronic device that converts low voltage (12 or 24 volts) of DC into 220 volts. Because we are usually 220 volts AC rectifier into DC to use, and the role of the inverter in contrast, hence the name. We are in a "mobile" era, mobile office, mobile communications, mobile leisure and entertainment. In the mobile state, people not only need to be supplied by the battery or battery low-voltage direct current, but also need our daily environment indispensable 220 volts AC, the inverter can meet our needs. Transformer is a kind of application of electromagnetic induction principle to achieve electrical energy conversion equipment, it can put a voltage, current AC power into the same frequency of another voltage, current AC power. The role of the transformer is to change the voltage. Can be issued by the power station to rise to high voltage, in order to reduce the loss in the transmission, to facilitate long-distance transmission of electricity, you can also place the electricity, the high voltage will be reduced to the voltage, to the user. Therefore, the transformer in the grid is in a very important position, is to ensure safe, reliable, economic operation and people's production and life of the key equipment.
Q:A transformer is used to step down a voltage of 11KV to 220V. Given that the transformer has 3200 turns in the primary, calculate the number of turns in the secondary coil.Another transformer is used to further to step down 220V to 110V. its input current is 3A and the output current is 5.6A. Calculate its efficiency
you have fifteen watts moving into, and in basic terms 5 going out, so the customary gadget performance is merely 33%. yet dissimilar the loss arises from themes different than the transformer; specifically, the rectifier gadget will chew up approximately 10% all by ability of itself.
Q:How many times does a copper wire have to go around the input side of a transformer to get the necessary amount of magnetism from 110 volts?How thick does the wire around the transformer have to be if the input it 110 volts? Can it be one wire as thin as a garbage bag tie, or does it need to be as thick as the original wire, but stripped and coiled around the transformer core?
As stated in another answer, the basic transformer equation is: E 4.44 X f X N X Ac X B E is the applied RMS voltage f is the frequency (Hz) N is the number of turns Ac is the core area (square meters) B is the maximum flux density (Webers per square meter also kknown as Teslas) If the design is for 120 volts at 60 Hz and 1 Tesla, the required number of turns would be about 0.5 divided by the core area. PS The voltage has nothing to do with the thickness of the wire. Wire thickness is determined by current, the desired internal voltage drop in the wire resistance and the tolerable temperature due to internal losses. Magnet wire is used. It has very thin insulation to use the minimum space and allow heat to be more easily conducted out of the coil. The wire can not be stripped bare.
Q:how are opyimy and megatron ( or w/e the f their names are)bros and hoes if they cant have roboet sex!!! if so wheres their mother and is the creator sexist about girls there is no girl robots and for that matter has some1 made a transformers porn yet.
I'm going to answer your question with a question: Did your parents drop you on your head when you were a kid?
Q:Can a electrical transformer have more the 1 input, while only having 1 output so that the power is combined into the 1 output,or would multiple inputs make the power feed back onto the other inputs and overload them.
I think what you're talking about is a 3 winding (or higher) transformer. A 3 winding transformer is just like a regular 2 winding transformer except you have another set of windings on a common core. With this you can provide step down from say 13.8 and provide secondary voltages at 480 and 2400V. Utilities sometimes use them as well when connecting different systems that have slightly different voltage ratings. Just so long as the transformer is protected properly and the transformer is loaded within its ratings there will be no problems. The company I work for has a portable transformer used to provide temporary loads when we do substation replacements or for emergencies. It has a 13.8kV primary and 4160/2400V and 480V secondary. One real consideration with a 3 winding transformer is the extra fault current that is available. There will be contributions from all 3 windings.
Q:How long does it take to restart the transformer?
If the transformer is shut down for a month or on hold, the trial is stopped for more than 6 months before the commissioning? A: The transformer shut down for a month, before the resumption of power transmission should be measured insulation resistance, qualified to be put into operation.Post or outage for more than 6 months of the transformer, should be done before the insulation resistance and insulation oil pressure test Dry and cold areas of irrigation and drainage dedicated transformer, the suspension period may be appropriate to extend, but not more than 8 months
Q:Could someone please explain, in relatively simple words, how an electrical transformer works?
An okorder
Q:Power transformer parameters
B. Transformer efficiency: In the rated power, the transformer output power and input power ratio, called the efficiency of the transformer, that η = (P2 ÷ P1) x100% where η is the efficiency of the transformer; P1 is the input power, P2 is the output power. When the transformer output power P2 is equal to the input power P1, the efficiency η is equal to 100%, the transformer will not produce any loss, but in fact this transformer is not the transformer transmission power always produce loss, this loss is mainly copper Loss and iron loss. Copper loss is the loss caused by the transformer coil resistance.When the current through the coil resistance heat, part of the energy into heat and loss.As the coil is generally wrapped with insulated copper wire, so called copper loss. The iron loss of the transformer includes two aspects: First, the hysteresis loss, when the AC current through the transformer, through the transformer silicon steel wire magnetic field its direction and size changes, making the silicon steel sheet internal friction, release heat, Part of the energy, which is the hysteresis loss. The other is the eddy current loss, when the transformer work, the magnetic core lines through the line, and the magnetic lines perpendicular to the plane will produce induced current, because the current self-closed loop Circulation, and into a spiral, so called vortex. The presence of eddy current heat, energy consumption, this loss is called eddy current loss. Transformer efficiency and transformer power levels are closely related, usually the greater the power, loss and output power is smaller, the higher the efficiency, otherwise, the smaller the power, the lower the efficiency.
Q:I am learning about transformers and one of the items to calculate is the impedance. I need to calculate regular 60 Hz Core and Coil Shell Type Transformers Al wire in secundary, Cu Wire primary and use Epoxy paper for insulation.
It's pretty difficult to calculate the impedances (there's more than one) entirely from the transformer's design data. It's easier and more usual to decide on an equivalent circuit (there are plenty available depending on how well you want to model the transformer) and then to determine the parameters by a mix of calculation and measurement. A pretty basic equivalent circuit which refers all impedances to the primary side, has the primary terminals connected first by Xm and Rc in parallel (the magnetising reactance and core loss resistance) and then by a third parallel branch containg a series connection of leakage reactance Xl, winding resistance Rw and an ideal transformer of turns ratio Np/Ns. Xm is best obtained from an open circuit test but could be calculated as the inductance of the primary winding. For the latter you'd need to know core dimensions, number of winding turns and the magnetising characteristic of the core iron. If you have conductor sizes and conductivities you can calculate the winding resistance Rw, referring the secondary part to the primary by multiplying it by (Np/Ns)?. You can deduce Rc from the losses measured on open circuit at nominal voltage and Rw from dc resistance measurements on the windings. If you know the specific hysteresis and eddy current losses of the core material, you can also have a good stab at calculating Rc. The leakage reactance is quite difficult to calculate from first principles - even designers usually resort to some empirical factors. Basically it's determined from the short circiut test which is at nominal secondary current. The ratio of primary volts to secondary surrent (referred of course) on secondary short circuit will get you close to Xl - you can adjust for Rw which can be determined from the losses on short circuit (core losses are absent here!) or by the two methods indicated above. It's normally Xl that's referred to as the transformer reactance and together with Rc and Rw, the impedance.

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