SH15-M Amorphous Alloy Oil-immersed Transformer

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Product Description:

SH15-M Series

Amorphous Alloy Oil-immersed Transformer

Introduction of Products

Amorphous alloy isderived from iron, boron and other elements which rapid cooling down to mouldin order to arrange its atoms disordered. Compared with silicon sheets, the permeabilityof amorphous alloy is high, the no-load losses and current is lower, and moreoperation charges can be saved. Meanwhile, its heat is lowand it has good stability to make its working lifelonger.

Performance Characteristics

1.     Saving power: The no-load losses reduce byabout 80% than that of S9 series.

2.     Reliable: The capability of anti-shortcircuit is strong.

3.     Protecting environment: Its noise is lowand it can decrease the discharging quantity of carbon.

Structure Characteristics

1. The core adopts three-phase five-limb and HV winding adopts D connection,which eliminates the three fluxes and three-harmonic electric potential anddecrease eddy current loss and temperature caused by leakage. Meanwhile, the steepnessof impulse voltage is reduced.

2. The coil takesthe shape of rectangular, and use conductor tensioning device to wind. Itadopts shaping, press mounting and other technique measures to make the outsidedimension of coil come to design requirement. And that HV coils wind outside LVcoils improve the strength of coil and the capability of anti-short circuit.

3. There is no oilstorage tank and moisture absorber on the oil tank. The transformer oil doesn’tcontact with the air and the expansion of oil depends on the elasticity of corrugatedplates to compensate. This can eliminate maintenance and improve working life.

Normal Using Condition

1.     The altitude is not more than 1000m.

2.     Environment temperature

Highest temperature: +40℃

Hottest monthly average temperature: +30℃

Highest yearly average temperature: +20℃

Lowest temperature: -40℃

3.     Using outdoors( or indoors)

4.     The wave shape of supply voltage is approximateto sine wave.

5.     The supply voltage of three phases isgenerally symmetric.

If thetransformers need to be used at abnormal condition, the details should beoffered when the users order.

Main Specification and Technology Parameter

1.     Range of rated capacity: 50~2500kVA

2.     Rated voltage: not more than 10kv

3.     Rated frequency: 50Hz

4.     Insulating level

Voltage  Grade

(kv)

The highest voltage effective value of equipment(kv)

Rated short-time applied withstand voltage(kV/min)

Rated lightning impact withstand voltage(peak)(kv)

1

1.1

3

--

6

7.2

20

60

10

12

35

75

5. The insulating classof transformer is A, coil temperature rise is not more than 65K, and thetemperature rise of top oil is not more than 60K.

6. Thetransformers correspond with the following standards:

a. GB1094.1~2, GB1094.3, GB1094.5 Power transformer

b. JB/T 10318 Technology parameter and request of oil-immersedamorphous alloy core distribution transformer

c. Standard of InternationalElectro-technical Commission: IEC60076, Power transformer

d. Q/SIHG1 SH15-M Technology parameter andrequest of three-phase oil-immersed distribution transformer of amorphous alloycore sealed type

7. TechnologyParameter of SH15-M Series

Rated  capacity (kVA)

Voltage  and tapping range

Symbol  of connecting group

No-load  losses (W)

Load  losses (W)

No-load  current (%)

Impedance  of short circuit (%)

HV(KV)

Tapping  range (%)

LV(kV)

30

6

6.3

10

10.5

11

±5

±2x2.5

0.4

Dyn11

33

630

1.7

4

50

43

910

1.3

63

50

1090

1.2

80

60

1310

1.1

100

75

1580

1

125

85

1890

0.9

160

100

2310

0.7

200

120

2730

0.7

250

140

3200

0.7

315

170

3830

0.5

400

200

4520

0.5

500

240

5410

0.5

630

320

6200

0.3

4.5

800

380

7500

0.3

1000

450

10300

0.3

1250

530

12000

0.2

1600

630

14500

0.2

2000

750

17400

0.2

5

2500

900

20200

0.2

Outline Dimension

Type

Outside dimension (mm

Weight (kg

Length

Width

Height

Oil weight

Total weight

SH15-30

1100

690

1090

130

630

SH15-50

1190

750

1140

160

710

SH15-63

1250

750

1160

160

750

SH15-80

1290

750

1200

170

810

SH15-100

1260

800

1190

180

870

SH15-125

1320

810

1220

190

940

SH15-160

1370

810

1220

210

1050

SH15-200

1410

800

1320

230

1140

SH15-250

1490

810

1360

260

1290

S(B)H15-315

1520

790

1430

280

1500

S(B)H15-400

1670

820

1510

330

1710

S(B)H15-500

1650

910

1450

370

1960

SBH15-630

1830

920

1440

430

2250

SBH15-800

1910

950

1500

480

2730

SBH15-1000

2000

1100

1490

620

3330

SBH15-1250

2100

1100

1580

730

3560

S(B)H15-1600

2120

1240

1560

860

3830

A comparison about no-load losses of amorphous alloyand silicon sheet

Capacity  (KVA)

No-load  losses (w)

S9  type (silicon  sheet)

SHI5  type (amorphous  alloy)

100

290

75

315

670

170

500

960

240

The Manufacturing Process of Amorphous Alloy Materials

a. The raw materials melt in the induction furnace.

b. The melted materials are transferred to feedingpart.

c. Control of casting head

d. After melting to be thin, it is sprayed to coolingwheel.

e. The sprayed materials cool down at the speed of 106℃ per second to form amorphous alloybelt.

f. Measure the width and thickness of alloy belt andfeedback to control system.

g. It is led to pull through unit.

h. Material receiving


A comparison to manufacturingprocess of amorphous alloy and silicon sheet

 Amorphous alloy material                 Orientation silicon sheet



Social and Economic Effects

  • The manufacturingprocess of core materials of amorphous alloy core transformers is simple, andthe energy source losses are little, so the carbon discharge can be reduced.

  • No load losses are low, and the increased investment cost of transformers can be taken back within5 years.

  • Low operation temperature, small insulation deterioration, long working life.



The ordering basic data

  1Rated capacitance;

  2Rated voltage;

  3Rated frequency;

  4Tapping range;

  5Impedance voltage;

  6Using condition;

  7Other performance data should be indicated inthe contract.


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Q:Transformer tap adjustment there are several ways? What are the advantages and disadvantages?
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.). Circuit symbols commonly used as the beginning of the number. Example: T01, T201 and so on.
Q:What is the primary side of the transformer
Explanation: The primary side refers to the input side of the voltage, and the secondary side refers to the output side of the voltage after the voltage is converted by the transformer. For the step-up transformer, the primary side is the low side, the secondary side is the high side; For the buck transformer, the primary side is the high side, the secondary side is the low side.
Q:What is the maximum current of the 800KVA transformer? What is the current? Is how to calculate, ask you master
The current of the transformer is determined by the load. 800KVA distribution transformer, the general high side is 10KV, low side is 0.4KV. Transformer rated current = capacity / (root 3 * rated voltage) 800KVA, high voltage side rated current = 46.2A. Low side = 1152A. Transformer has no load loss and load loss. When the no-load loss is equal to the load loss, the transformer is the most efficient. The general efficiency of the highest load in the 60 ~ 70% or so.
Q:Transformer core
The core part of the transformer is composed of (primary coil) and (secondary coil), generally divided into two types of step-up transformer and step-down transformer. (In fact, there is not a step up and not buck the isolation transformer) Did not hear the transformer "what son".
Q:220V to 12V transformer L N + V + V on behalf of what? The more detailed the better! Thank you prawn
LN represents the line of fire and zero line, + V is the input and output voltage
Q:Transformer short-circuit impedance is big good, or small good? The same capacity, voltage ... solution
Transformer rated current / short circuit impedance = transformer short-circuit current 6% short-circuit current is small, and 4% not much difference, personal point of view! Nothing can look at Guo Weiguo teacher answered the question, will certainly benefit from the.
Q:Transformer parameter interpretation
I, temperature rise and cooling: transformer winding or the upper oil temperature and the temperature difference between the ambient temperature of the transformer, known as the winding or the upper oil temperature rise. Oil-immersed transformer winding temperature rise limit of 65K, oil surface temperature rise 55K. There are a variety of cooling methods: oil from the cold, forced air-cooled, water-cooled, tube, chip and so on. J, Insulation level: Insulation class standard. Insulation level of the method for the following example: high voltage rated voltage of 35kV level, low voltage rated voltage of 10kV level transformer insulation level expressed as LI200AC85 / LI75AC35, which LI200 said the transformer high voltage lightning impulse withstand voltage of 200kV, power frequency withstand voltage For the 85kV, low voltage lightning impulse withstand voltage of 75kV, power frequency withstand voltage of 35kV. Oaks High Technology Co., Ltd. The current oil-immersed transformer product insulation level LI75AC35, said the transformer high voltage lightning impulse withstand voltage of 75kV, power frequency Withstand voltage of 35kV, because the low pressure is 400V, can not be considered. K, the connection group label: According to the transformer one. Secondary winding phase relationship, the transformer winding connected into a variety of different combinations, known as the winding group. In order to distinguish between different groups, often using the clock representation, that is, the high voltage side of the voltage phase of the clock as a long needle, fixed on 12, low voltage side of the phase voltage as the clock short needle, (A) is a (triangular) joint, and the secondary winding is a (star) junction with a center point, and the group number is (11).
Q:Transformer ratio and transformer ratio
Transformer ratio K and transformer voltage on both sides U1 U2 winding turns N1 N2 current I1 Ⅰ2 have a relationship! In the ideal case, the ratio K = U1 / U2 = N1 / N2 = I2 / I1
Q:Is the secondary current rating of the transformer line current or phase current?
For star-wiring products, the line current = phase current For triangular wiring products, the rated current refers to the line current (phase to phase current)
Q:Transformer winding maximum temperature at?
National standard (oil-immersed transformer) the top of the oil temperature is generally adjusted at 85 ℃, if more than 85 ℃, to analyze the reasons: 1, if it is because the room temperature is too high, heavy load and other slowly rising, you can continue to run more than 85 ℃, but The maximum temperature can not exceed 95 ℃ (when the transformer core core or winding is 105 ℃, will seriously damage the insulation, shorten the life or burn the transformer); 2, the transformer running at 85 ℃, the transformer oil temperature and room temperature difference can not exceed 55 ℃, if it is over, may be a serious overload, the voltage is too low, the current is too large, internal failure, etc., continue to run will seriously damage the insulation, shorten the life or burn the transformer.

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