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Electrical Distribution Transformers

Dielectric Liquid immersed TransformersHermetically sealed completely fi lled typeUp to 36 kV

Contents Electrical Distribution Transformers

Specialisation

The Transformer

Tests

Technological Development

Sustainability

Overview

Equipment

Technical Characteristics

Up to 2500 kVA and Insulation Level up to 24 kV D0 C

k (AB’)

Up to 2500 kVA and Insulation Level up to 24 kV C0 C

k (AC’)

Up to 2500 kVA and Insulation Level up to 24 kV C0 B

k (CC’)

Up to 2500 kVA and Insulation Level up to 36 kV B036

Bk36

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20

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The quality of the products we design, manufacture and install is backed by the implementation and certification of an ISO 9001:2008-compliant quality management system.Our commitment to environmental protection is asserted by the implementation and certifi cation of an ISO 14001 environmental management system.

As a result of the constant development of standards and new designs, the characteristics of the items shown in this catalogue are subject to change without prior notice.Such characteristics and the availability of materials shall be effective only when confi rmed by our Technical-Commercial department.

3

The incorporation into Ormazabal in 2001 of the distribution transformer manufacturer Cotradis constituted a strategic milestone for us.

The exchange of know-how between our technical teams has significantly reinforced the value added for our customers.

Growing energy demands, higher quality requirements in energy supply and the priority to reduce the consumption of natural resources require the use of equipment which responds with high levels of reliability, safety and energy efficiency.

Focusing on the needs of our customers and mastering new technologies allows us to offer products which comply with these requirements.

Our specialisation in Medium Voltage is backed by the certification of our transformers in major European electrical companies.

We manufacture a wide range of dielectric liquid immersed distribution transformers, compliant with all of the requirements in current international regulations and with a range of powers from 25 kVA to 2500 kVA and insulation levels up to 36 kV.

Furthermore, close collaboration with our customers enables us to develop transformers conforming to their own particular standards and specifications.

SPECIALISATION

4

Our commitment to innovation places us at the technological forefront of Europe.

Therefore our products meet the most demanding worldwide requirements and are certified by internationally renowned laboratories.

Our quality, environmental and health& safety prevention policies establish our commitment to fostering and being part of an environmentally-responsible society.

Within this framework, our quality management system is internationally recognised through ISO 9001 certification.

Furthermore, our strong commitment to the environment is reflected in the implementation of an environmentalmanagement system, certified according to the ISO 14001 standard, which monitors the impact of activities on the environment.

This policy also aims to promote and establish a culture of excellence and respect for personal health and safety, in accordance with standard OHSAS 18001. Its scope ranges from our team of professionals and partners to the end user.

INNOVATION AND QUALITY

5


Windings Advantages

Concentric windings. Insulation between layers: Cellulose with epoxy resin which compacts the coils, once cured.Coils are manufactured using the latest techniques and machinery.

Optimised to withstand short circuit forces.

Expertise in coil cooling.Careful manufacturing of coils and cooling channels.

Improved heat dissipation in the windings.

Use of high-quality cellulosicmaterials.Optimum handling andstorage to preserve insulation properties.

Guaranteed insulation.

Connections and Tap Changer Advantages

MV and LV terminals.Transformer connection to the outside.

Off-circuit Tap changer.Secondary voltage can be adjusted precisely.

ACTIVE PART

The active part of the transformer is the energy transformation system, composed of the ferromagnetic core, the windings and the medium and low voltage connections.

TANK AND DIELECTRIC

The transformer’s tank and the dielectric liquid provide the necessary insulation and cooling.

Active part

Tank and dielectric

THE TRANSFORMER

Tank and Dielectric Liquid Advantages

Elastic Corrugated tank with cooling fins.

Increased heat dissipation surface.Absorption of variations in the volume of the dielectric liquid caused by changes in its temperature.Mechanical and electrical protection.

Completely filled with dielectric liquid and hermetically sealed tank.

No aging of the dielectric liquid as there is no contact with the air.Minimal maintenance requirements.Small size.No expansion tank or air dehydrating neededLighter in weight.Electromagnetic field shielding.

Immersed in dielectric liquid.Lower noise level.Better behaviour in the event of overloads and harmonics.

Surface treatment and paint.Protection against corrosion, atmospheric agents, insolation and impacts.

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TYPE TESTS

With our customer’s agreement, the following tests are performed in accordance with current international regulations:

Temperature-rise test. •Dielectric type tests: •

Lightning impulse (LI) test. ·

ROUTINE TESTS

All of the transformers manufactured are subjected to the following routine tests, in accordance with IEC 60076-1:

Winding resistance measurement. •Measurement of the voltage ratio and verification of •the vector group.Measurement of the short-circuit impedance and •load losses.Measurement of no -load losses and current. •Dielectric routine tests:•

Separate source AC withstand voltage test ·(also known as Applied over-voltage test or Power frequency test)

Induced AC voltage test (ACSD) ·(also known as Short duration induced AC withstand voltage test)

SEPARATE SOURCE AC WITHSTAND VOLTAGE TEST (Applied over-voltage test or Power frequency test)

MV LV

Highest voltage for the equipment, Um, (Insulation Level). [kV] 12 17.5 24 36 1.1 3.6

Rated withstand Voltage of the test (1 minute). [kV] 28 38 50 70 3 10

TESTS

Our transformers are subjected to the tests described in the IEC 60076 series of standards.

We have our own laboratories for this purpose, equipped with modern, precise measurement devices and systems that are certified and calibrated according to the directives of the ISO 9001 standard, to ensure that our products comply with the most demanding quality standards.

LIGHTNING IMPULSE (LI) TEST

MV LV

Highest voltage for the equipment, Um, (Insulation Level). [kV] 12 17.5 24 36 1.1 3.6

Rated withstand Voltage for Lightning impulse test (1.2 / 50 s). [kV] 75 95 125 170 20 20

7


SPECIAL TESTS

Special tests specifically requested by the customer:

Special dielectric tests. ·Partial discharge measurement test. ·Winding capacities measurement – earth and ·between windings.Zero-sequence (homopolar) impedance ·measurement (in three-phase transformers).Ability to withstand Short-circuit test ·(IEC 60076-5), performed in accredited external and internal laboratories (HPL).Sound level measurement(IEC 60076-10). ·Measurement of no-load current harmonics. ·Measurement of insulation resistance and/or ·measurement of the dissipation factor (tan delta) of the insulation capacitances.

ADDITIONAL TESTS

Dielectric Oil Tests•

The transformer’s operative life is largely related to the quality of the dielectric liquid. We assure the highest quality standards by means of strict qualification and product auditing processes as well as by applying the most advanced technologies in the treatment process.

Density at 20ºC ·Viscosity at 40ºC ·Water content ·Breakdown voltage ·Dielectric dissipation factor ·Interfacial tension ·Acidity ·Flash point ·

Tank Tests •

EN 50464-4 Endurance test ·

Paint Tests •

Film Thickness measurement ·Adherence test ·Hardness test ·Bend test ·Impact test ·Cupping test ·Salt spray test ·

8

TECHNOLOGICAL DEVELOPMENT

The quality and reliability of our products is demonstrated through the testing and certification of our transformers in independent, internationally-renowned laboratories.

Furthermore, the technological development and passion for innovation, which has been fundamentally apparent throughout the history of our company, is reinforced by our High Power Laboratory (HPL) with a capacity up to 2500 MVA.

These are our own facilities which enable ongoing tests and which combined with our highly-qualified staff, further certify our technological independence.

Together with external organisations and official bodies, we also participate in market quality control campaigns to assure the verification of our products.

9


SUSTAINABILITY

Sustainability, understood as the best compromise between satisfying social demands, caring for the environment and financial aspects.

Social Demands: •

Safety of people and goods. ·Continuity of service. ·

Financial Aspects •

Optimum use of raw materials. ·Longer equipment life, endurance and ·robustness.Equipment adaptable to network evolution. ·Equipment durability. ·

These guidelines allow us to develop distribution transformers with the following characteristics:

Caring for the Environment: Reduction in the volume of dielectric liquid. ·Minimal dimensions. ·Minimal losses in the transformer. ·Low risk of oil leakage.·Non-aggressive for the surrounding ·environment.Recyclability.·

APPLICATION

Dielectric Liquid completely immersed• Hermetically-Sealed Transformer

· Hermetically-sealed tanks: - No expansion tank is needed. - Less dielectric liquid used than in other types of transformer. · No contact between the dielectric liquid and external agents (air, humidity, pollution, etc.) - Prevents deterioration of the dielectric’s characteristics. - Low-level maintenance. · Minimal risk of leakages: - Tank robustness (high quality materials). - Welding processes carried out by qualified staff. - Leak tests performed in all transformers.

Minimal Environmental Impact• · Respect for the environment:

- Use of highly-recyclable materials. - Rationalisation in the use of raw materials. - Optimised transformer dimensions · Optimum consumption of raw materials: - Materials selection. - Maximisation of their characteristics. · Low electrical energy consumption: - Advanced technology in design, manufacturing and testing. - Minimal loss transformers. - Safe, reliable products. · ISO 14001 certification.

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Low Noise Level: :•

An optimum design and assembly of the ·ferromagnetic core enables us to drastically reduce the level of noise generated by the transformer.There are two components that identify the level ·of noise produced by a transformer:

LwA

= LpA

+ KS

Where:

LwA

: Acoustic Power (cause)

LpA

: Acoustic Pressure (effect)

KS factor (>0) which depends on the size

of the transformer.

To define a transformer, the use of Acoustic Power L

wA is recommended since it is a value

which is independent from the environment and is therefore the best magnitude for assessing the acoustic emissivity of a transformer.

PCB Free

Our transformers are only manufactured using new ·

components and without any PCBs, in strict compliance

with current regulations.

Electromagnetic Compatibility

Our transformers are passive elements in terms of

electromagnetic compatibility. In other words, they

work satisfactorily without adding electromagnetic noise

that is intolerable for equipment in their surroundings

and they withstand such interference caused by other

devices.

N.B.: The currents that circulate through the conductors

connected to the transformers, especially low-voltage ones,

can cause significant electromagnetic fields. The installation

designer must make sure that these cables are laid such that

the fields are minimised or, if necessary, measures must be

adopted to limit their effects.

11


CONNECTORS FOR MV PLUG-IN BUSHINGS (NOT SUPPLIED WITH THE TRANSFORMER)

Insulation [kV] 24 36

Type A elbow connector (250 A)Ref. EUROMOLD K-158LR

Type B elbow connector (400 A)Ref. EUROMOLD M-400LR

Type A straight connector (250 A)Ref. EUROMOLD K-152SR

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OVERVIEW

From 25 to 2500 kVA • Insulation Level 24 and 36 kVDielectric Liquid Immersed Transformers

LV connection Flags LV single phase Busbar

Bushings (optional)

These transformers comply with the following characteristics:

Three-phase transformers, 50 Hz for installation indoors or outdoors•Hermetically-sealed •Completely Immersed in mineral oil in accordance with standard • IEC 60296.ONAN cooling.•Colour: RAL 7033 (other colours under request).•

The data and values shown correspond to the Normal Service Conditions referred to in standard IEC 60076-1.

N.B.:For other configurations, please contact our Technical-Commercial Department.

(*) For other secondary voltages, please contact our Technical-Commercial Department

DESCRIPTION

The transformers comply with the following standards:

EN 50464

IEC 60076

STANDARDS

CONNECTIONS

LOW VOLTAGE CONNECTION

MEDIUM VOLTAGE CONNECTION

Metric M12 Metric: from M20 to M55

LV PORCELAIN BUSHINGS FOR 420V *

Rated Power [kVA] 25 40 50 63 100 160 250 400 500 630 800 1000 1250 1600 2000 2500

Rated current [A] 250 250 250 250 250 250 630 630 1000 1000 1600 1600 2000 3150 3150 4000

Dimension - Metric d1 M12 M12 M12 M12 M12 M12 M20 M20 M30 M30 M42 M42 M42 M48 M48 M55

Material Brass Brass Brass Brass Brass Brass Brass Brass Brass Brass Brass Brass Copper Copper Copper Copper

LV SINGLE POLE BUSBAR BUSHINGS FOR INDOOR INSTALLATION (OPTIONAL)

Rated Power [kVA] 25 40 50 63 100 160 250 400 500 630 800 1000 1250 1600 2000 2500

Rated current [A] - - - - - - 630 630 1600 1600 1600 1600 - - - -

Material - - - - - - Al Al Copper Copper Copper Copper - - - -

CONNECTION PARTS – LV FLAGS

Metric M12 M12 M12 M12 M12 M12 M20 M20 M30 M30 M42 M42 M42 M48 M48 M55

e [mm] - - - - - - 32 32 32 32 40 40 40 40 40 70

f0 [mm] 40 40 40 40 40 40 60 60 60 60 100 100 100 120 120 150

Ø [mm] 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 18

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EQUIPMENT

STANDARD EQUIPMENT

Uninhibited mineral insulating oil IEC 60296•

Off-circuit regulation tap changer •

(can only be operated without voltage) IEC 60214

Off circuit voltage tap changer for dual primary •

voltage transformers (can only be operated without voltage) IEC 60214

MV porcelain bushings EN 50180•

LV porcelain bushings EN 50386•

LV connection Flags 630 kVA•

2 Earthing terminals in the tank EN 50216-4•

Draining and sampling device EN 50216-4•

Filling device EN 50464-1•

Rating plate EN 50464-1•

2 Lifting eyes EN 50464-1•

4 Latching eyes EN 50464-1•

4 Pulling eyes EN 50464-1•

Thermometer pocket EN-50216-4•

Wheels 250kVA EN-50216-4•

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Figure

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3

45

6

7

8

9

10

11

12

13

1

2

4

1210

11

13

6

5

2

7

9

8

13


OTHER DIELECTRIC LIQUIDS

Natural, biodegradable ester for application in •electrical transformers. Class K with fire point greater than 300 ºC.

Dielectric liquid silicone according to the IEC 60836 •standard, Class K with fire point greater than 300 ºC.

Synthetic biodegradable ester for application in •electrical transformers according to the IEC 61099 standard. Class K, with fire point greater than 300 ºC.

OPTIONAL EQUIPMENT

MV plug-in bushings EN 50180•

LV single pole busbar bushings EN 50387•Thermometer: measures the temperature of the top layer •of the insulation liquid. Available with 2 contacts (alarm and trigger) and upper limit marker.Protection relay EN 50216-3•Functions:Internal tank pressure control Dielectric liquid temperature control Oil level control and gas detection

Dielectric liquid collection device •

Terminal cover box•

Pole mounting brackets and support for surge arresters •

(application for pole mounted transformers up to 160 kVA).

1

Figure

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3

4

5

6

7

6

7

2

5

4

3

1

7

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CHARACTERISTICS 24 kV: D0 C

K (AB’)

From 250 up to 2500 kVA • Insulation Level 24 kVDielectric Liquid Immersed Transformers

ELECTRICAL CHARACTERISTICS

RATED POWER [kVA] 250 400 500 630 800 1000 1250 1600 2000 2500

Rated Voltage (Ur)Primary [kV] 20

No-load Secondary [V] 400 / 410 / 415 / 420 (to be defi ned)

Vector Group Dyn11/ Dyn5

No-Load Losses - Po [W] List D0

530 750 880 1030 1150 1400 1750 2200 2700 3200

Load Losses - Pk [W] List Ck 3250 4600 5500 6500 8400 10500 13500 17000 21000 26500

Short-Circuit Impedance (%) at 75ºC 4 4 4 4 6 6 6 6 6 6

Sound Power Level LwA [dB] List D0

60 63 64 65 66 68 69 71 73 76

Voltage drop at full load (%)cosƒ=1 1.37 1.22 1.16 1.11 1.19 1.22 1.25 1.24 1.22 1.23

cosƒ=0.8 3.33 3.25 3.21 3.17 4.44 4.47 4.49 4.48 4.47 4.47

Effi ciency (%)

LOAD 100%cosƒ=1 98.51 98.68 98.75 98.82 98.86 98.82 98.79 98.81 98.83 98.83

cosƒ=0.8 98.15 98.36 98.44 98.53 98.58 98.53 98.50 98.52 98.54 98.54

LOAD 75%cosƒ=1 98.76 98.90 98.96 99.02 99.06 99.04 99.01 99.03 99.04 99.04

cosƒ=0.8 98.45 98.63 98.70 98.78 98.83 98.80 98.77 98.79 98.81 98.81

DIMENSIONS [mm]

RATED POWER [kVA] 250 400 500 630 800 1000 1250 1600 2000 2500

A (Length) 1376 1537 1622 1622 1932 1997 2007 1922 1965 2093

B (Width) 930 941 962 962 1161 1200 1200 1224 1277 1487

C (Height to cover) 915 1004 1026 1092 1112 1158 1230 1517 1715 1737

D1 (Height to MV with porcelain bushings) 1300 1389 1411 1477 1497 1543 1615 1902 2100 2122

D3 (Height to MV Plug-In bushings) 1004 1093 1115 1181 1201 1247 1319 1606 1804 1826

D2 (Height to LV with Flags) 1149 1238 1287 1353 1445 1491 1563 1886 2084 2167

F (Separation between MV bushings) 275 275 275 275 275 275 275 275 275 275

H (separation between LV bushings) 150 150 150 150 150 150 150 200 200 200

J (Distance between wheel axis) 670 670 670 670 670 670 820 820 820 1070

K (wheel width) 40 40 40 40 40 40 70 70 70 70

Ø (wheel diameter) 125 125 125 125 125 125 200 200 200 200

L (Wheel) 110 110 110 110 110 110 165 165 165 165

Oil Volume [Litres] 260 330 390 410 510 530 540 1000 1200 1400

Total weight [Kg] 1010 1330 1600 1750 2250 2430 2750 3850 4750 5350

24 kV: D0 C

K (AB’)

LiftingEyes LV Bushings

MV Bushings

WheelFrames(skids)

Thermometer Pocket

Draining and SamplingDevice

EarthconnectionM12

MV Regulation Tap Changer

FillingDevice

LiftingEyes

LV Bushings

MV Bushings

WheelFrames(skids)

ThermometerPocket


FillingDevice


EarthconnectionM12

F F F

J

H H

A

H

B

F

K

D2

M L

D2

M LC

J

D1

D3

C

KJ J

H H

A

B

H

MV Plug-In Bushings MV Porcelain Bushings

15

CHARACTERISTICS 24 kV: D0 C

K (AB’)



RATED POWER [kVA] 25 40 50 63 100 160



Vector Group Yzn11/Dyn11

No-Load Losses - Po [W] List D0

95 125 145 175 260 375

Load Losses - Pk [W] List Ck 700 940 1100 1270 1750 2350

Short-Circuit Impedance (%) at 75ºC 4 4 4 4 4 4

Sound Power Level LwA [dB] List D0

47 49 50 51 54 57

Voltage drop at full load (%)cosƒ=1 2.84 2.40 2.26 2.08 1.81 1.54

cosƒ=0.8 3.96 3.83 3.77 3.70 3.57 3.43

Effi ciency (%)

LOAD 100%cosƒ=1 96.92 97.41 97.57 97.76 98.03 98.33

cosƒ=0.8 96.18 96.78 96.98 97.21 97.55 97.92

LOAD 75%cosƒ=1 97.46 97.87 98.00 98.15 98.37 98.61

cosƒ=0.8 96.84 97.35 97.52 97.70 97.97 98.26

DIMENSIONS [mm]

RATED POWER [kVA] 25 40 50 63 100 160

A (Length) 888 888 888 926 1006 1205

B (Width) 704 704 704 735 796 848

C (Height to cover) 768 810 810 844 889 847

D1 (Height to MV with porcelain bushings) 1153 1195 1195 1229 1274 1232

D3 (Height to MV Plug-In bushings) 857 899 899 933 978 936

D2 (Height to LV with Flags) 918 960 960 994 1039 997

F (Separation between MV bushings) 275 275 275 275 275 275

H (separation between LV bushings) 80 80 80 80 80 80

J (Distance between wheel axis) 520 520 520 520 520 520

K (wheel width) 40 40 40 40 40 40

Ø (wheel diameter) 125 125 125 125 125 125

L (Wheel) 110 110 110 110 110 110

Distance between pole mounting brackets 530 530 530 530 530 530

Oil Volume [Litres] 100 105 105 120 155 200

Total weight [Kg] 360 400 435 515 610 770

24 kV: D0 C

K (AB’)

LV Bushings

MV Bushings Surge arresters support (Op) LiftingEyes

Latchingeyes

FillingDevice


Wheel Frames (skids)

Thermometer Pocket(optional)


EarthconnectionM12

MV Porcelain BushingsF

J

K

A

H H HB

D2 D

1

C

LL

80

J

14

0

F

25

25

Dyn/Yzn

16



RATED POWER [kVA] 250 400 500 630 800 1000 1250 1600 2000 2500



Vector Group Dyn11/ Dyn5

No-Load Losses - Po [W] List C0

425 610 720 860 930 1100 1350 1700 2100 2500

Load Losses - Pk [W] List Ck 3250 4600 5500 6500 8400 10500 13500 17000 21000 26500


Sound Power Level LwA [dB] List C0

55 58 59 60 61 63 64 66 68 71


cosƒ=0.8 3.33 3.25 3.22 3.17 4.47 4.47 4.49 4.48 4.48 4.47

Effi ciency (%)

LOAD 100%cosƒ=1 98.55 98.71 98.77 98.85 98.85 98.85 98.83 98.84 98.83 98.85

cosƒ=0.8 98.20 98.40 98.47 98.56 98.56 98.57 98.54 98.56 98.55 98.57

LOAD 75%cosƒ=1 98.81 98.95 98.99 99.05 99.07 99.07 99.06 99.07 99.06 99.08

cosƒ=0.8 98.52 98.69 98.74 98.82 98.84 98.85 98.82 98.84 98.83 98.85

DIMENSIONS [mm]

RATED POWER [kVA] 250 400 500 630 800 1000 1250 1600 2000 2500

A (Length) 1376 1537 1622 1622 1932 1997 2007 1922 1965 2157

B (Width) 930 941 962 962 1161 1245 1224 1224 1277 1487

C (Height to cover) 960 1004 1026 1114 1123 1158 1252 1517 1715 1737







K (wheel width) 40 40 40 40 40 40 70 70 70 70

Ø (wheel diameter) 125 125 125 125 125 125 200 200 200 200

L (Wheel) 110 110 110 110 110 110 165 165 165 165


Total weight [Kg] 1090 1355 1640 1835 2310 2510 2905 4020 4850 5525

24 KV C0 C

K (AC’)

LiftingEyes LV Bushings

MV Bushings

WheelFrames(skids)

Thermometer Pocket


EarthconnectionM12


FillingDevice

LiftingEyes

LV Bushings

MV Bushings

WheelFrames(skids)

ThermometerPocket


FillingDevice


EarthconnectionM12

F F F

J

H H

A

H

B

F

K

D2

M L

D2

M LC

J

D1

D3

C

KJ J

H H

A

B

H

MV Plug-In Bushings MV Porcelain Bushings

CHARACTERISTICS 24 kV: C0 C

K (AC’)

17



RATED POWER [kVA] 25 40 50 63 100 160



Vector Group Yzn11/Dyn11


75 105 125 145 210 300

Load Losses - Pk [W] List Ck 700 940 1100 1270 1750 2350



45 47 47 48 49 52


cosƒ=0.8 3.96 3.83 3.77 3.70 3.57 3.43

Effi ciency (%)

LOAD 100%cosƒ=1 96.99 97.45 97.61 97.80 98.08 98.37

cosƒ=0.8 96.27 96.84 97.03 97.27 97.61 97.97

LOAD 75%cosƒ=1 97.56 97.93 98.06 98.21 98.43 98.67

cosƒ=0.8 96.97 97.43 97.58 97.78 98.05 98.34

DIMENSIONS [mm]

RATED POWER [kVA] 25 40 50 63 100 160

A (Length) 888 888 888 926 1.006 1.205

B (Width) 704 704 704 735 796 848

C (Height to cover) 780 869 828 859 911 847


D3 (Height to MV Plug-In bushings) 869 958 917 948 1.000 936

D2 (Height to LV with Flags) 930 1.019 978 1.009 1.061 997




K (wheel width) 40 40 40 40 40 40

Ø (wheel diameter) 125 125 125 125 125 125

L (Wheel) 110 110 110 110 110 110



Total weight [Kg] 370 440 445 520 670 790

24 KV C0 C

K (AC’)

LV Bushings


Latchingeyes

FillingDevice





EarthconnectionM12


J

K

A

H H HB

D2 D

1

C

LL

80

J

14

0

F

25

25

Dyn/Yzn

CHARACTERISTICS 24 kV: C0 C

K (AC’)

18

CHARACTERISTICS 24 kV: C0 B

K (CC’)



RATED POWER [kVA] 250 400 500 630 800 1000 1250 1600 2000 2500



Vector Group Dyn11 / Dyn5


425 610 720 860 930 1100 1350 1700 2100 2500

Load Losses- Pk [W] List BK

2750 3850 4600 5400 7000 9000 11000 14000 18000 22000



55 58 59 60 61 63 64 66 68 71


cosƒ=0.8 3.22 3.13 3.10 3.06 4.35 4.37 4.38 4.35 4.35 4.35

Effi ciency(%)

LOAD 100%cosƒ=1 98.75 98.90 98.95 99.02 99.02 99.00 98.98 99.03 99.03 99.03

cosƒ=0.8 98.44 98.63 98.69 98.77 98.78 98.75 98.73 98.79 98.79 98.79

LOAD 75%cosƒ=1 98.96 99.08 99.13 99.18 99.20 99.19 99.17 99.21 99.21 99.21

cosƒ=0.8 98.70 98.86 98.91 98.98 99.00 98.98 98.97 99.01 99.02 99.02

DIMENSIONS [mm]

RATED POWER [kVA] 250 400 500 630 800 1000 1250 1600 2000 2500

A (Length) 1376 1537 1622 1569 1997 1997 2007 1965 1965 2480

B (Width) 930 941 962 962 1200 1200 1182 1277 1277 1426

C (Height to cover) 915 1004 1092 1169 1158 1158 1373 1671 1715 1836







K (wheel width) 40 40 40 40 40 40 70 70 70 70

Ø (wheel diameter) 125 125 125 125 125 125 200 200 200 200

L (Wheel) 110 110 110 110 110 110 165 165 165 165


Total weight [Kg] 1100 1420 1810 1920 2530 2560 3200 4950 5150 5750

24 kV: C0

BK (CC’)

LiftingEyes LV Plug-In Bushings MV Porcelain

Bushings

WheelFrames(skids)

ThermometerPocket


EarthconnectionM12


Filling Device

LiftingEyes

LV Plug-In Bushings

MV Porcelain Bushings

WheelFrames(skids)

ThermometerPocket


Filling Device

DrainingandSamplingDevice

EarthconnectionM12

F F F

J

H H

A

H

B

F

K M L

D2

M L

D2

C

J

D1

D3

C

KJ J

H H

A

B

H

LV Plug-In Bushings MV Porcelain Bushings

19

LV Bushings


Latchingeyes

FillingDevice





EarthconnectionM12


J

K

A

H H H

B

D2 D

1

C

L

80

J

14

0

F

CHARACTERISTICS 24 kV: C0 B

K (CC’)



RATED POWER [kVA] 25 40 50 63 100 160



Vector Group Yzn11 / Yzn5


75 105 125 145 210 300

Load Losses- Pk [W] List Bk 560 750 875 1050 1475 2000



45 47 47 48 49 52


cosƒ=0.8 3.79 3.63 3.57 3.53 3.43 3.31

Effi ciency(%)

LOAD 100%cosƒ=1 97.52 97.91 98.04 98.14 98.34 98.58

cosƒ=0.8 96.92 97.40 97.56 97.68 97.94 98.23

LOAD 75%cosƒ=1 97.96 98.27 98.38 98.47 98.63 98.83

cosƒ=0.8 97.47 97.85 97.98 98.09 98.30 98.54

DIMENSIONS [mm]

RATED POWER [kVA] 25 40 50 63 100 160

A (Length) 888 888 926 926 1006 1205

B (Width) 704 704 704 704 796 848

C (Height to cover) 780 869 848 899 911 847


D3 (Height to MV Plug-In bushings) 869 958 937 988 1000 936





K (wheel width) 40 40 40 40 40 40

Ø (wheel diameter) 125 125 125 125 125 125

L (Wheel) 110 110 110 110 110 110



Total weight [Kg] 380 460 490 548 690 820

24 kV: C0 B

K (CC’)

Dyn/Yzn

25

25

20

CHARACTERISTICS 36 kV: B036

BK36


LiftingEyes

LV Plug-In BushingsMV Porcelain Bushings

WheelFrames(skids)

ThermometerPocket


Filling Device

LV Plug-In Bushings


EarthconnectionM12

LiftingEyes

LV Plug-In Bushings MV Porcelain Bushings

WheelFrames(skids)

ThermometerPocket


MV Porcelain Bushings

Filling Device


EarthconnectionM12


RATED POWER [kVA] 250 400 500 630 800 1000 1250 1600 2000 2500



Vector Group Dyn11 / Dyn5

No-Load Losses - Po [W] List B036

650 930 1100 1300 1500 1700 2100 2600 3150 3800

Load Losses - Pk [W] List BK36

3500 4900 5600 6500 8400 10500 13500 17000 21000 26500

Short-Circuit Impedance (%) at 75ºC 4.5 4.5 4.5 4.5 6 6 6 6 6 6

Sound Power Level LwA [dB] List B036

62 65 66 67 68 68 70 71 73 76


cosƒ=0.8 3.72 3.62 3.55 3.50 4.47 4.47 4.49 4.48 4.47 4.47

Effi ciency(%)

LOAD 100%cosƒ=1 98.37 98.56 98.68 98.78 98.78 98.79 98.77 98.79 98.81 98.80

cosƒ=0.8 97.97 98.21 98.35 98.48 98.48 98.50 98.46 98.49 98.51 98.51

LOAD 75%cosƒ=1 98.62 98.79 98.88 98.96 98.97 99.00 98.98 99.00 99.01 99.01

cosƒ=0.8 98.28 98.49 98.60 98.71 98.72 98.75 98.72 98.75 98.77 98.77

DIMENSIONS [mm]

RATED POWER [kVA] 250 400 500 630 800 1000 1250 1600 2000 2500

A (Length) 1376 1537 1622 1592 1932 1997 2007 1922 1965 2093

B (Width) 930 941 962 962 1161 1200 1200 1224 1277 1487

C (Height to cover) 915 1004 1026 1092 1112 1158 1230 1517 1715 1737







K (wheel width) 40 40 40 40 40 40 70 70 70 70

Ø (wheel diameter) 125 125 125 125 125 125 200 200 200 200

L (Wheel) 110 110 110 110 110 110 165 165 165 165


Total weight [Kg] 1000 1330 1600 1800 2220 2480 2780 3850 4850 5350

36 kV: B036

BK36

F F

KJ J K

J J

J

F F

A

H H H

B

D2

C D3

D2

D1

C

LM

M L

A

B

H H H

21

LV Bushings

MV Bushings Surge arresters support (Op)

LiftingEyes

Latchingeyes

FillingDevice





EarthconnectionM12

CHARACTERISTICS 36 kV: B036

BK36



RATED POWER [kVA] 25 40 50 63 100 160



Vector Group Yzn11 / Yzn5

No-Load Losses - Po [W] List B036

115 165 190 225 320 460

Load Losses- Pk [W] List BK36

900 1110 1250 1435 1950 2550

Short-Circuit Impedance (%) at 75ºC 4.5 4.5 4.5 4.5 4.5 4.5

Sound Power Level LwA [dB] List B036

50 51 52 53 56 59


cosƒ=0.8 4.50 4.35 4.26 4.17 4.01 3.83

Effi ciency(%)

LOAD 100%cosƒ=1 96.10 96.91 97.20 97.43 97.78 98.15

cosƒ=0.8 95.17 96.17 96.53 96.81 97.24 97.70

LOAD 75%cosƒ=1 96.79 97.44 97.67 97.86 98.15 98.45

cosƒ=0.8 96.02 96.82 97.11 97.34 97.69 98.06

DIMENSIONS [mm]

RATED POWER [kVA] 25 40 50 63 100 160

A (Length) 888 926 926 926 1006 1205

B (Width) 704 725 725 725 796 848

C (Height to cover) 768 810 810 859 889 847






K (wheel width) 40 40 40 40 40 40

Ø (wheel diameter) 125 125 125 125 125 125

L (Wheel) 110 110 110 110 110 110



Total weight [Kg] 330 430 475 490 610 760

36 kV: B036

BK36

F

J

H

A

B

HH

JK

D2

D1

C

L

14

0

80

FMV Porcelain Bushings

25

25

Dyn/Yzn

22

Notes

23

Notes

24

Notes

CA·109·GB·1007

TECHNICAL-COMMERCIAL DEPARTMENTTel.: +34 94 431 87 31Fax: +34 94 431 87 32

www.ormazabal.com

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