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Dry-type power transformers series PT


LLC "Electropolyus" offers dry-type power transformers of its own production.

Dry-type power transformers series PT and shell form PT are power step-down three phase two-winding transformers of general utility with capacity from 10 to 630 kVA, with voltage up to 10 kV, with air-barrier or cast insulation. They are designed to transform the electrical energy within AC three phase electric networks with frequency of 50 - 60 Hz. They are being installed in the industrial and public buildings, which have increased requirements for fire safety and environmental cleanness.

Main circuits and phase-displacement groups (HV/LV) – Y/Y-0; Y/∆; ∆/Y-0 

Voltage control – no-load tap changer (NLTC) using jumpers for ±2×2,5% Uн.

Specifications of PT transformers

 

Capacity,
kVA

No-load losses,
W

Short-circuit losses,
W

Short-circuit voltage, %

Corrected sound power level, dB(А)

Lowered corrected sound power level, dB(А)

100

480

1850

4,5

58

43

160

670

2600

4,5

60

44

250

750

2900

4,5

65

48

400

820

4300

5,8

68

50

630

1750

5900

5,8

70

52

 

According to GOST Standard 11677, limit deviations of technical parameters of transformers from the declared use are:

-short-circuit voltage ± 10%;
-
short-circuit losses on principal tapping ± 10%;

-no-load losses ± 15%;

-total weight ± 10%.

 

Capacity,
kVA
100
160
250
400
630
L, mm
1170
1170
1300
1360
1540
B, mm
750
750
750
750
750
H, mm
1250
1250
1347
1496
1618
H1, mm
1250
1250
1341
1476
1580
D, mm
400
400
430
450
520
F, mm
520
520
520
670
670
K, mm
273
273
273
341
309
K1, mm
274
274
274
282
246
d, mm
125
125
125
125
125
m, mm
40
40
40
40
40
Weight, kg

430

650

850

1500

1680

 

Operation conditions:
Ambient temperature: from -25°С to +50°С;
Relative air humidity – less than 80% at a temperature of +25°C;
Installation height above sea level is no more than 1000 m;
Environmental conditions – non-hazardous area, not containing current-conducting dust.


Design of transformers:

Transformers consist of the following core assembly components:
- a magnetic core;
- electric windings, located on magnet core (the active zone);
- outputs (inputs, LV and HV transformer’s busbars);
- a protective cover.


Magnet core of power transformer is three phase core-type, made of the cold-rolled electrical steel.

LV and HV windings are manufactured from aluminum or copper winding wire.

The windings are produced as coil windings and multilayer windings, depending on capacity and voltage.

The procedure of impregnation and filling of the coils is performed in the vacuum system. Drying and baking procedures take place in electrical furnaces at a special temperature program, which guarantees stable quality of the windings and high resistance to short-circuit currents.

Windings heat-resistance class - F.

 

Transformers are manufactured with protection level of IP00 and IP21 (with protective cover).
Transformers with protective cover are manufactured per consumer’s request in the following modifications:

- suitable for connection of power cables through the shell bottom;
- with strip terminals of HV and LV through the narrow sides of the transformer (left, right);
- with strip terminals of HV and LV through the cap of the transformer

Protective covers provide access to the transformer via removable panels on the long side of the transformer.

Our contacts:

+38057 754-49-07 (telephone/fax)

+38057 751-52-62

+38067 385-24-14

 

 

 

 



• 23.10.2018 •
Предприятие года 2018

Эксперты Международного экономического рейтинга "Лига лучших" провели оценку деловой репутации нашего предприятия,  и по результатам экспертизы нас номинировали на международную награду «ENTERPRISE OF THE YEAR - 2018» за безупречную деловую репутацию.

 


• 10.09.2018 •
Высоковольтные сухие трансформаторы по цене масляных
В разделе "Статьи" читайте о преимуществе сухих высоковольтных трансформаторов серии ОСЗа по сравнению с масляными трансформаторами.

• 12.01.2018 •
Контроллер КРВ-2
Заканчивается подготовка к сертификации новой разработки - взрывобезопасного контроллера КРВ-2.

• 18.05.2017 •
Новый адрес электронной почты
  etf.electropolus@ukr.net
Он действует наряду с адресом:          
  etf.electropolus@gmail.com

• 21.09.2016 •
Ремонт сухих трансформаторов средней мощности
Качественно и быстро ремонтируем сухие трансформаторы средней мощности (до 250 кВт).
Контактный телефон 057 754-49-07

"Электрополюс", ООО
 Украина, г. Харьков
 Тел.:  +38 (057)  754-49-07 
                              755-31-91
 Факс: +38 (057) 754-49-07

 etf.electropolus@ukr.net
 etf.electropolus@gmail.com


 
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