Dry Type Cast transformers

Argentine made products with international quality standards.

Dry Type Cast transformers

Cast resin For their constructive characteristics, they are highly reliable and fulfill with the current health and safety standards.

In the presesence of fire they have a low flammability and they do not emanate toxic gases that could endanger the environment and human life.

They have an easy instalation. They just require some protection against accidental contacts and an adequate ventilation.

They are recommended for locations where safety, environment and electric power supply are essential, as residential buildings, malls (shopping centers), hotels, hospitals, subways, etc.

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Applications Distribution

Industries

Buildings

Electric generation plants

Traction

Oil & Gas

Mining

Naval

Creation of artificial neutral

Cogeneration


Dry Cast transformers

Standard line with Aluminum conductors

W1U1 V1

= LT =

= L =

= PT =

= P =

H - BT H

P - BT

H - MT

P - MT

A

HT

B.T. M.T.

Class 17,5 kV

Class 36 kV

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Tappings ± 2 x 2,5

Secondary voltage 400 - 231 V

Frequency 50 Hz

Vector group Dyn11

Cooling system AN

Thermal class F

Protection degree IP 00 (up to IP55)

Installation altitude (f.s.l.) up to 1000 m

P Po Pcc Ucc Io Sound L H P T D A Weight

kVA dB Kg100 520 1800 6 2,1 58 1260 1120 680 600 100 40 814125 570 2000 6 2 58 1280 1150 680 600 100 40 890160 640 2400 6 1,9 58 1300 1180 680 600 100 40 920200 720 2800 6 1,8 58 1320 1200 680 600 100 40 1000250 830 3300 6 1,7 60 1350 1250 680 600 100 40 1120315 960 3900 6 1,6 60 1380 1280 680 600 100 40 1220400 1120 4700 6 1,5 60 1430 1330 900 800 130 45 1370500 1300 5600 6 1,4 60 1480 1410 900 800 130 45 1600630 1550 6800 6 1,3 62 1550 1480 900 800 130 45 1830800 1850 8200 6 1,2 64 1620 1580 900 800 130 45 21801000 2200 9800 6 1,1 64 1700 1670 900 800 130 45 25001250 2600 11700 6 1 65 1780 1800 1120 1000 160 50 30001600 3150 14200 6 0,9 66 1880 1940 1120 1000 160 50 37002000 3700 16700 6 0,8 66 1960 2070 1120 1000 160 50 44002500 4300 19600 6 0,7 68 2020 2200 1120 1000 160 50 54003150 4900 22300 7 0,6 70 2030 2300 1120 1000 160 50 6600

W % mm


KVA dB Kg100 630 2400 6 2,2 58 1460 1430 680 600 100 40 1040125 680 2600 6 2,1 58 1490 1450 680 600 100 40 1100160 820 2900 6 2 58 1510 1480 680 600 100 40 1180200 930 3200 6 1,9 58 1530 1510 680 600 100 40 1280250 1100 3600 6 1,8 58 1560 1550 680 600 100 40 1450315 1250 4200 6 1,7 60 1600 1600 680 600 100 40 1600400 1500 4800 6 1,6 60 1650 1650 900 800 130 45 1850500 1800 5500 6 1,5 60 1710 1730 900 800 130 45 2100630 2200 6600 6 1,4 62 1780 1800 900 800 130 45 2470800 2600 7800 6 1,3 64 1860 1900 900 800 130 45 2900

1000 3100 9200 6 1,2 64 1950 2020 900 800 130 45 34001250 3700 11000 6 1,1 65 2050 2140 1120 1000 160 50 40001600 4400 13400 6 1 66 2160 2260 1120 1000 160 50 48002000 5000 15700 6 0,9 66 2270 2380 1120 1000 160 50 56002500 5500 18600 6 0,8 68 2350 2460 1120 1000 160 50 65003150 5900 22000 7 0,7 70 2380 2480 1120 1000 160 50 7400

W % mm


Class 36 kV

Class 17,5 kV

Dry Cast transformers

Standard line with Copper conductors

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W1U1 V1

= LT =

= L =

= PT =

= P =

H - BT H

P - BT

H - MT

P - MT

A

HT

B.T. M.T.

Tappings ± 2 x 2,5

Secondary voltage 400 - 231 V

Frequency 50 Hz

Vector group Dyn11

Cooling system AN

Thermal class F

Protection degree IP 00 (up to IP55)

Installation altitude (f.s.l.) up to 1000 m


KVA dB Kg100 520 1800 6 2,1 58 1200 1100 680 600 100 40 952125 570 2000 6 2 58 1220 1120 680 600 100 40 1040160 640 2400 6 1,9 58 1240 1150 680 600 100 40 1080200 720 2800 6 1,8 58 1270 1170 680 600 100 40 1170250 830 3300 6 1,7 60 1300 1210 680 600 100 40 1310315 960 3900 6 1,6 60 1340 1240 680 600 100 40 1430400 1120 4700 6 1,5 60 1380 1300 900 800 130 45 1600500 1300 5600 6 1,4 60 1440 1370 900 800 130 45 1880630 1550 6800 6 1,3 62 1500 1440 900 800 130 45 2140800 1850 8200 6 1,2 64 1580 1540 900 800 130 45 25501000 2200 9800 6 1,1 64 1650 1640 900 800 130 45 29301250 2600 11700 6 1 65 1730 1750 1120 1000 160 50 35101600 3150 14200 6 0,9 66 1850 1890 1120 1000 160 50 43302000 3700 16700 6 0,8 66 1920 2020 1120 1000 160 50 51502500 4300 19600 6 0,7 68 1970 2150 1120 1000 160 50 63203150 4900 22300 7 0,6 70 1980 2250 1120 1000 160 50 7730

W % mm


KVA dB Kg100 630 2400 6 2,2 58 1400 1390 680 600 100 40 1210125 680 2600 6 2,1 58 1420 1400 680 600 100 40 1290160 820 2900 6 2 58 1440 1440 680 600 100 40 1380200 930 3200 6 1,9 58 1460 1470 680 600 100 40 1500250 1100 3600 6 1,8 58 1490 1500 680 600 100 40 1680315 1250 4200 6 1,7 60 1520 1550 680 600 100 40 1870400 1500 4800 6 1,6 60 1570 1600 900 800 130 45 2170500 1800 5500 6 1,5 60 1630 1670 900 800 130 45 2460630 2200 6600 6 1,4 62 1690 1750 900 800 130 45 2890800 2600 7800 6 1,3 64 1770 1850 900 800 130 45 3400

1000 3100 9200 6 1,2 64 1860 1960 900 800 130 45 39801250 3700 11000 6 1,1 65 1950 2070 1120 1000 160 50 46801600 4400 13400 6 1 66 2060 2200 1120 1000 160 50 56202000 5000 15700 6 0,9 66 2160 2310 1120 1000 160 50 65502500 5500 18600 6 0,8 68 2240 2390 1120 1000 160 50 76003150 5900 22000 7 0,7 70 2260 2410 1120 1000 160 50 8660

W % mm


Protective enclosures

Features

Degree of protection to IP55

Disarmable, “self-supporting” or not

For indoors or outdoors

With natural ventilation, forced ventilation or heat exchangers

Standard sizes or according to specific needs

Made in sheet iron, stainless steel or aluminum

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Degree of protection IP21 (with forced ventilation optional)

Degree of protection (with forced ventilation)

L P

H

Transformers with nominal power between L P H Weight

kVA kg

0 100 - 125 - 160 - 200 - 250 1700 1300 1700 213

1 315 - 400 - 500 - 630 2000 1400 2000 248

2 800 - 1000 - 1250 2300 1500 2300 329

3 1600 - 2000 - 2500 2600 1600 2600 395

4 + 3150 2900 1700 2900 490

No

mm

Transformers with nominal power between L P H H1 Weight

kVA kg

0 100 - 125 - 160 - 200 - 250 1700 1300 1700 330 247

1 315 - 400 - 500 - 630 2000 1400 2000 330 328

2 800 - 1000 - 1250 2300 1500 2300 370 391

3 1600 - 2000 - 2500 2600 1600 2600 370 466

4 + 3150 2900 1700 2900 370 560

No

mm


Temperature Rise Control

The transformer has incorporated in it a temperature rise control wich protects itself against an unacceptable heating level. The causes for overheating ar due to high environmental temperatures, poor ventilation or overload.

Having a properly control of the temperature in the windings, its posible to maximize the power of the transformer without shortening its useful life. To perform this control, a temperature sensor is placed within each low voltage sensor.

The sensors are resistance PT100 with three wires, and they are wired to a terminal block on the transformer. The heat resistance at ambient temperature is 110 ohms approximately.

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Temperature Rise Control Central (Unit)


Installation

The Cast Resine dry tipe Transformers have a degree of protection IP00 and they are suitable for indoor installations. In case of being necessary its outdoor installation, it must be protected by a minimun degree enclosure IP23, which has enough ventilation and shelter from the rain. The easiness of its installation and connection, in addition to the simple requirements of the room that hostes it, makes the Cast Resine dry tipe Transformers, the right solution for the current energy needs, fulfilling with the highest standards of personal security and environment.

It is recommended a clean environment with dry air, in order to achieve a minimun maintenance. To prevent accidental contact, the transformer can be enclosed by a tissue of 10x10 mm subjected with iron frames, observing the electric distances (specified in the Chart). This ones must be also kept regarding the proctections and the conductors that circundates the transformers, in order to avoid posible discharges.

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B.T. M.T.

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Minimun Distances

Maximun voltage Impulse voltage (BIL) Distances

kV eficaces kV pico mm

7,2 60 90

14,5 95 200

36 170 300

B.T.

M.T.

B.T. M.T.

Ways of conection


Ventilation

When designing the ventilation in the transformer´s room, it must be taken in account its loosses: Pt Wo + Wcc

These losses are manifested as heat, modifying the ambient temperature of the room. The standards IEC 60726 – IRAM 2276 set the Dry Transformers´ normal conditions of service. For an altitude above 1000m above sea. The cooling air´s temperature wont be in any case above 40°C nor less than -25°C for outdoors transformers or 5°C for indoor transformers.

Further, the air temperature wont be in any case above:

• 30° C for average daily temperature • 20° C for average anual temperature

The most simple and reliable solution is to achieve a natural ventilation of the room, allowing the entry of fresh air in the bottom and an exit in the opposite top. If the natural ventilation was insufficient, fans could be installed increasing this way the airflow keeping the environmental conditions within the standards.

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Natural Ventilation

Forced Ventilation

Flow Calculation

In order to calculate the required airflow and the size of the openings in the rooms, there will be used the following expresions, taking 15°C as the difference between the incoming and otucoming air.

S = 0,22 . PT Q = 3,5 . PT

H

PT: Total disipated losses at 75 °C [kW]

Q: Flow of renewal air [m3/min.]

S: Net area of the upper and lower openings [m2]


Load

The Dry-Cast Transformers class F can be overload for a limited time, according to standards IEC 60905-IRAM 2464

The value of the overload can be known having as a fact the initial charge, the ambient temperature and the duration of it. For a Dry-Cast Transformers, class F and a constant of time of 1 hour (see load curves)

Application example Considering the initial data, what amount of load can be applied to a transformer?

Tp = 2 hours

Ta = 20 oC

K1 = 0,85

Using chart of drawing of the overload capacity, and tracing a vertical line from the horizontal axis up to cutting the 2 hours time curve, a K2 value of 1,25 is obtained in the vertical axis.

The overload allowance is 1,25 times the transformer rated current during 2 hours. That time elapsed, the initial charge rating is reestablished for the 22 hours resting of the 24 hours period time.

That time elapsed, the initial charge rating is reestablished for the 22 hours resting of the 24 hours period time.

80

90

10

11

10 20 30 40 50 0

PN

TA

PN: Continuous normal power [%]

TA: Average anual ambient temperature [oC]

Lo

ad

Load Capacity

0,9

1,0

1,1

1,4

0,4 0,6 1,0 0,8 0,2

K2

K1

TA: Climate temperature [oC]

K1: Initial Charge [A] shown as a fraction of the rated current

K2: Admisible load [A] shown as a fraction of the rated current

TP: Overload time [hours]

1,2

1,3

1,5

Tp=0,5 h

Ta=20 oC

Tp=1,0 h

2

4

8

1224

Overload Capacity


Impregnated Dry Type Transformers

Features Magnetic core made of grain oriented silicon steel with low specific losses.

Coil windings insulated with nomex,

impregnated with F type varnish.

The windings are built in complete layers without spaces, in order to eliminate possible shifts in electrodynamic efforts.

The whole (core and windings) are strongly compressed to guarantee a safe and silent performance.

The metallic support elements are

electrolytically galvanized. (zinc)

The protection cabinets (Protective Housing) are built according to the stardards IEC 529- IRAM 2444, in iron sheet, with natural ventilation. The air enters from the slotted bottom and gets out from a labyrinth between the side and the roof.

The cabinet is design based on a

lateral envelope bolted to the bottom with a removable roof. It has two sheet metal profiles folded as a fixing base with holes for anchoring, ringbolts on the top for lifting and moving.

The hole is degreased, phosphated

and painted with baked polyester powder. Applications

Auxiliary services

Rectification

Start Enghien

Insulation

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Monophasic Transformers / 1,5 to 30 kVA

Monophasic Transformers / 40 to 200 kVA

Protective enclosures IP23

4 x Ø= L =

= P1 =

= P =

= L1 =

TIERRA

H

H

TIERRA

= L1 =

= L =

= P1 =

= P =

4 x Ø

= L1 =

= L =

= P1 =

= P =

H

TIERRA

4 x Ø11

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P L P H L1 P1 Ø Weight

kVA kg1,5 195 110 279 80 80 8,5 182 195 120 279 80 90 8,5 223 195 155 279 80 125 9,5 314 240 132 360 150 100 11 345 240 142 360 150 110 11 41

6,5 280 152 410 175 120 11 508 280 162 410 175 135 11 6010 320 167 460 200 130 13 74

12,5 320 172 460 200 140 13 8315 360 182 510 225 150 13 10520 360 192 510 225 160 13 11725 400 192 560 250 160 13 14530 400 202 560 250 170 13 158

mm


kVA kg40 440 310 665 220 260 12 19050 470 340 715 235 290 12 23063 500 340 765 250 290 12 29075 540 340 815 270 290 12 340

100 580 370 855 290 320 14 410125 600 370 895 300 320 14 480160 640 370 945 320 320 14 570200 680 400 995 340 350 14 660

mm

Light - For monophasic Transformers

P L P H L1 P1 Weight

kVA kgML-0 1,5-3 342 350 530 250 250 14,3ML-1 4-8 428 410 642 300 300 20ML-2 10-30 553 530 815 415 400 33ML-3 40-75 704 630 1070 480 460 67ML-4 100-200 904 730 1230 570 560 93,3

Modelmm

Light – For threephase Transformers


kVA kgTL-0 1,5-3,5 442 350 530 350 250 16,6TL-1 5-12,5 528 410 642 430 300 22,6TL-2 15-50 728 530 815 590 400 38,6TL-3 63-125 929 630 1070 730 460 79TL-4 160-250 1129 790 1238 860 560 123TL-5 315-500 1330 900 1410 970 660 155

Modelmm


Threephase Transformers / 1 to 50 kVA

Threephase / 63 to 500 kVA

Protective enclosures IP21

= L1 =

= L =

= P1 =

= P =

4 x Ø11

H

TIERRA

H

TIERRA

= L1 =

= L =

= P1 =

= P =

4 x Ø

4 x Ø

= P1 =

= P =

TIERRA

= L =

= L1 =

TIERRA

H


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kVA kg1 295 110 254 180 80 8,5 262 295 120 254 180 90 8,5 31

3,5 295 140 254 180 110 8,5 445 360 132 360 270 100 11 52

7,5 360 142 360 270 110 11 6010 420 152 410 315 120 11 80

12,5 420 162 410 315 130 11 9015 480 162 460 360 130 13 11820 480 172 460 360 140 13 13125 540 182 510 405 150 13 17530 540 192 510 405 160 13 18540 600 192 560 450 160 13 22850 600 202 560 450 170 13 251

mm


kVA kg63 660 310 665 440 260 12 30075 705 340 705 470 290 12 350

100 750 340 765 500 290 12 440125 810 340 815 540 290 12 530160 870 370 835 580 320 14 640200 900 370 895 600 320 14 750250 960 370 945 640 320 14 890315 1020 400 1005 680 350 14 1000400 1080 400 1035 720 350 14 1200500 1140 400 1085 760 350 14 1400

mm

Heavy - For monophasic Transformers


kVA kgMP-1 4-8 530 430 660 350 350 29MP-2 10-30 680 530 830 450 450 53MP-3 40-75 830 630 1100 600 600 85MP-4 100-200 980 730 1300 700 700 116

Modelmm

Heavy - For threephase Transformers


kVA kgTP-1 5-12,5 630 430 660 430 350 34TP-2 15-50 830 530 880 650 450 60TP-3 63-125 1030 630 1100 750 550 95TP-4 160-250 1230 730 1300 850 650 132TP-5 315-500 1430 830 1500 950 750 167

Modelmm


Reactors and Inductors

Features

The Half and Low Voltage Reactors, Cast Resin or Impregnated, are design and manufactured according to the customers´ specific requirements.

The Cast Resin Reactors, due to our

manufacturing technic, have no crack defects nor “cast (capping) defects”. The round or rectangular reactors, made of copper or aluminum, insulated with fiberglass are coiled on isolated layers by glass fabrics on a cylindrical shape. The design of our coils offers an excellent distribution of voltages and extreme resistance to short-circuit efforts. The epoxi resin used for the cast (encapsulation) is from type F and it permeates the fiberglass insulation, making up an homogeneus and resistant compound. This feature liberate them from partial discharges and prevents the thermal craking. Regarding the connections of the coil, are molded in one piece, making up epoxy-glass insulators. In case of being required a resistance for outdoor instalation, it is used a cycloaliphatic epoxy resin.

In the case of Impregnated Reactors,

they are suitable for both indoor or outdoor installation. They are constructed with of aluminum or copper plates, insulated with glass tape and impregnated with resin. The construction technic ensures an exellent mechanical resistance to the short-circuit efforts and a uniform insulation system in type F (155°C). The diferenr performances allow the assembly of the support insulators in any position and with a variety of conection possibilities.

Applications Limiting inrush currents of capacitor

banks

Harmonic Filters

Short-circuit current limiting

Direct current insulation

Limiting the inrush current during capacitor switching operations

Grounding

Arc supression

Blocking/ Damping/ Shunt

In low and half voltage up to 36 kV

For indoors and outdoors

Copper and Aluminum windings

Type B, F, H and C

Iron or air core

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Documents

Dry Type Cast transformers