MV/LV Transformers for Distribution Network Solutions ... · Reliable innovation. Personal...

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Reliable innovation. Personal solutions.

MV/LV Transformers for

Distribution Network Solutions

transformaDistribution Transformers

Up to 36 kV and up to 5 MVA IEC Standards

Transformers for Distribution Network Solutions

transfoormaDielectric liquid immersed transformers

Contents

IntroductIon _________________________ 1Preface 1

Your Electrical Network 2

Your Business and DNS Applications 2

Our Product Map (SSS & DNS) 3

MaIn features ________________________ 4Safety 4

Reliability 6

Efficiency 6

Sustainability 7

Continuous innovation 7

technIcal detaIls ______________________ 8Family 8

Technical data 9

Constructive structure 9

Dielectric liquids 10

desIgn characterIstIcs _________________ 12Equipment 12

Low voltage connection 13

Medium voltage connection 13

Type of Transformers _______________________________________14

Conventional 14

Conventional_IEC 18

Non-conventional 32

handlIng, InstallatIon and after sales ______________________ 34

Handling 34

Indoor 34

Outdoor 35

Commissioning and after sales 35

Recycling and end-of-life 35

The quality of the products designed, manufactured and installed by Ormazabal is backed by the implementation and certification of a quality management system, based on international standard ISO 9001:2008.Our commitment to the environment is reaffirmed with the implementation and certification of an environmental management system as laid down in international standard ISO 14001.In view of the constant evolution in standards and design, the characteristics of the elements contained in this catalogue are subject to change without prior notification.These characteristics, as well as the availability of components, are subject to confirmation by Ormazabal.



1

PrefaceThe 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 5000 kVA and insulation levels up to 36 kV. In addition, our portfolio includes special transformers up to 72.5 kV and 10 MVA.

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

Currently more than 170,000 of Ormazabal’s transforma are installed in electric distribution networks, industry, wind farms and photovoltaic plants in more than 20 countries.

Ormazabal is the leading provider of customized solutions to electrical utilities, to electrical end users as well as renewable energy systems applications based on its own technology.

We encourage the development of the electrical sector towards the challenges of the future energy needs. We cooperate with the world’s leading local, regional and global companies in the electrical sector with a strong commitment to innovation towards personal safety, network reliability, energy efficiency, and sustainability.

Our highly qualified and focused team of innovation-motivated professionals have developed our own products and solutions during our more than a century long consolidated history, always by establishing close relationship with our customers aimed at achieving mutual long term benefits.

Velatia is a family-run, industrial, technological and benchmark global group which operates in the areas of electrical networks, electronics and communication networks as well as in the consulting, security and aeronautics component sectors, where safety, efficiency and reliability are valued.

Our customer orientation has led to the development of our extensive network of factories in Spain, France, Germany, Poland, Brazil, Mexico and China, helping to meet our customers’ needs in more than 50 countries.

The solutions of the companies in Velatia seek to make the world a more and better connected, more sustainable, smarter, safer, more humane place.

Introduction

Kalkbukt PV Plant (Republic of South Africa)

Public Distribution EDF utility (France)

Athletic Bilbao Stadium (Bilbao, Spain)



2

Your Electrical Network"Your dedicated partner for reliable and intelligent electrical network".

Your Business and DNS Applications

PUBLIC DISTRIBUTION

END USERS

Infrastructure Industry Services

RES

Wind Solar

Dispatchable RES

Close relationship with our customers and the profound knowledge of the electrical business are the keys to success that enable us to offer Distribution Network Solutions (DNS) based on high added value products and services adapted to the needs of the electrical utilities, electrical energy end users and renewable energies.



3

Our Product Map (SSS & DNS)We believe that excellence does not lie solely in offering effective products and services, but also in the ability to respond to individual requirements and demands.

We provide our clients with personalised projects for efficient energy management via Primary and Secondary Distribution equipment and solutions.

Our Business Lines

SSS: Substation Solution for primary distribution

DNS: Distribution Network Solutions for secondary distribution

Our products for your segment

cpg.1 cpg.0 gae1250kmax amccibor transfoorma

Power transformersormacontainer Prefabricated

substationsnvl.cibor

cgm.3 gae ga cgmcosmos [IEC - ANSI/IEEE]

cgmcosmos [HN]

ea

ekorsys family transfoorma Distribution transformers

Protection, automation and control

Oil

ConventionalNon-conventional

transforma.tpc transforma.fine Extended range solutions

CURRENT® family

Low voltage boardAdvanced metering, sensing

& analytics, monitoring and

communicationsBiodegradable

dielectric liquid

organic

Concrete prefabricated transformer substations (TS) Metallic prefabricated TS CEADS Switching nodes

Underground Walk-in Compact

Concrete enclosure for transformer substations (TS) Metallic enclosure for TS

Photovoltaic substation

Mobile substationUnderground Walk-in Modular



4

SafetyOur 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.

Routine test

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 LVHighest 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

Type test

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

Lightning impulse (LI) test

MV LVHighest 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 μs).

[kV] 75 95 125 170 20 20

Main features



5

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 20°C

● Viscosity at 40°C

● 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



6

ReliabilityThe 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.

Efficiency

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

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: L

wA = L

pA + K

S

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 LwA 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.



7

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.

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.

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

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

Ecodesign

Ormazabal complies with the requirements of the Ecodesigndirective from the European Commission (No 548 / 2014) that defines the guideline for the environmentally friendly design of the transformers in Europe.

This regulation applies to all the transformers placing on the market or put into service from July 2015 throughout the European Union and doesn’t affect the products to be exported outside Europe.When supplied within the EU, this equipment will bear the CE mark as proof of compliance with European Union directives.

The Ormazabal distribution and power transformers are being developed to contribute to commitment of this directive, that is, to improve energy efficiency and environmental performance.

Continuous innovationOur 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.

Recently we have extended our product range to 5 MVA and also we have developed several new transformers for different applications: transforma.fine for wind power generation, transformers with on-load tap changer, transformers for high voltage shore conection systems, etc. as well as transformers with a greater variety of lower losses.



8

Technical detailsFamily

transfoormaDistribution Transformers

ConventionalNon-conventional

transforma.tpc transforma.fine Extended range solutions

Ur (max.) 24 kV / 36 kV 24 kV / 36 kV 36 kV - Other technical values (>36 kV, >5000 kVA....)

- OLTC (On load tap charger)- Containerized generators- PV applications- Auxiliary services in nuclear

power plants- High voltage shore connection

systems- Extended features

(*) Other solutions on request

Standard IEC-HN HN IEC

Power (max.) 25 - 5000 kVA 50 - 630 kVA 5 MVA

LossesA0Bk/A0Ck/D0Ck/C0Ck/C0Bk/E0Dk/ B036Bk36/A036Ak36 Consult availability Consult availability

Oil Dielectric liquid immersed hermetically sealed completely filled transformer

Self-protected transformers

Small-sized transformers that are highly resistant to high temperatures

Biodegradable dielectric liquid

>> organic

Transformer with natural biodegradable dielectric liquid

Applicable electrical standardsIEC

EN 50464 Three-phase oil-immersed distribution transformers 50 Hz, from 50 kVA to 2 500 kVA with highest voltage for equipment not exceeding 36 kV

IEC 60076-1 Power Transformers – Part 1: General

IEC 60076-3 Power transformers - Part 3: Insulation levels, dielectric tests and external clearances in air

EU Directive

Regulation No 548/2014 Implementation of the Ecodesign Guideline 2009/125/EG with regard to power transformers



9

Technical data ● Three-phase transformers, for indoor or outdoor installation

● Dielectric liquid immersed transformers: Hermetically- sealed completely immersed in oil in accordance with standard IEC 60296

● ONAN cooling

● Colour: RAL 7033 (other colours under request)

● Conventional transformers: ● From 25 to 5000 kVA

● Insulation level: 24 and 36 kV

The data and values shown correspond to the normal service conditions referred to in standard IEC 60076-1.

For other configurations, please contact Ormazabal.

Constructive structure

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.

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 cellulosic materials ● Optimum handling and storage 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

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 needed ● Lighter 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

1

4

5

2

3

6

1 Tank and dielectric liquid

2 MV and LV windings

3 MV plug-in bushings

4 Low voltage (LV) terminals

5 Thermometer pocket

6 Ferro magnetic core



10

Dielectric liquids ● Mineral oil: Uninhibited mineral insulating oil according to IEC 60296

● Bioelectra®: Natural, biodegradable ester for application in organic transformers. Class K with fire point greater than 300°C

● Dielectric liquid silicone according to the IEC 60836 standard, Class K with fire point greater than 300°C

● Synthetic biodegradable ester for application in electrical transformers according to the IEC 61099 standard

organic transformers

Ormazabal offers, as part of its range of dielectric liquid immersed transformers, the organic transformers, which are characterised by the use of a natural biodegradable ester as a dielectric.

This natural ester Bioelectra® developed and patented by Ormazabal is a dielectric coolant liquid obtained from vegetal oils and made without antioxidant additives.

Its excellent antioxidant capacity is based on its special composition and a specific refining process that allows it to maintain its natural antioxidants.

Natural ester features ● Excellent dielectric properties: It has a high water saturation point, which allows it to maintain high breakdown voltage values with a high water content

● High fire resistance: High flash point (>300°C) and fire point (>350°C), much higher than those of mineral oils. It is classified as a K class liquid (Fire point > 300°C) according to Standard IEC 61100. Better behaviour against fire than mineral oil transformers

● High biodegradability in ground and water due to its natural composition

● It is not ecotoxic

● Long service life: It prolongs the life of the cellulosic insulations thanks to its high water retention capacity

● Recyclable and reusable in other favourable environmental products (biodiesel) at the end of its service life

● The electrical characteristics and dimensions of the transformer are not affected



11

Advantages compared to other dielectric liquids

● Superior dielectric properties with high water content: ● Higher breakdown voltage with high

water content (much higher water saturation level than mineral oils)

● Higher level of safety: ● Higher fire and flash points than the rest

of dielectric liquids

● Non-toxic product

● Recyclable and reusable at the end of its service life

● Increases the service life of the transformer: ● Increases the service life of the cellulosic

insulations thanks to its high water saturation point

● Lower generation of gas during the electrical stress that it endures during operation

● Severe oxidation tests show that the acids generated in the natural ester do not decrease its breakdown voltage or affect copper negatively

Natural ester vs other dielectrics

Mineral oilHydrocarbons with

high molecular weightSilicone

OilsSynthetic

EstersNaturalEsters

Fire Point 160°C 312°C 340°C 322°C 360°C

Biodegradability low low null high very high

Advantages compared to other type of transformers

In relation to dry transformers:

Any transformer with dielectric liquid has the following advantages against dry transformers:

● Better losses level:

Dry transformers have considerably higher no-load and load losses than dielectric liquid transformers

(This difference can increase annual operation losses by more than 50%)

● Lower noise:

Dry transformers have a much higher noise level than dielectric liquid transformers (difference in acoustic power between 10 and 15 dB)

● Overloadability

● Higher life expectancy

● Higher robustness against vibrations, environmental conditions and transient phenomena in the electrical network

● Less space required, as it does not require a safety perimeter

Additionally, being an organic transformer it is characterised by:

● Similar safety levels against fire

● Lower environmental impact at the end of its service life in its recycling process

● Alternative for installing in natural areas

In relation to silicone transformers:

● Higher biodegradability

● Zero toxicity against aquatic organisms

● Lower environmental impact at the end of its service life (recyclable and reusable dielectric liquid)

In relation to mineral oil transformers:

● Higher biodegradability

● Better behaviour against fire

● Lower environmental impact at the end of its service life (recyclable and reusable dielectric liquid)

Environ-mentalimpactLossesNoise

organic

Dry

BiodegradabilityFire resistance

(fire point temp.)

organic range

Mineral oil range (common values)



12

Design characteristics

Standard Optional1 Off-circuit regulation tap changer (can only be operated without voltage) IEC 60214 •2.a MV porcelain bushings EN 50180 •2.b MV plug-in bushings •3 LV porcelain bushings EN 50386 •4.a LV connection flags (≥630 kVA) •4.b LV single pole busbar bushings EN 50180 •5 Earthing terminals in the tank EN 50216-4 •6 Draining and sampling device EN 50216-4 •7 Filling device EN 50464-1 •

Protection relay Functions: Internal tank pressure control, dielectric liquid temperature control, oil level control and gas detection

EN 50216-3 •

8 Rating plate EN 50464-1 •9 2 Lifting eyes EN 50464-1 •10 4 Latching eyes EN 50464-1 •11 4 Pulling eyes EN 50464-1 •12 Thermometer pocket EN-50216-4 •

Thermometer: measures the temperature of the top layer of the insulation liquid Available with 2 contacts (alarm and trigger) and upper limit marker

•

13 Wheels (≥250 kVA) EN-50216-4 •14 Dielectric liquid collecting device •15 Terminal cover box •16 Pole mounting brackets and support for surge arresters (application for pole mounted

transformers up to 160 kVA)•

Equipment

Conventional transformers

2.a

8

6

513

11

10

3

14

1

4.b

4.a

9

12

2.b15

7

16

16



13

LV single phase Busbar Bushings (optional)

LV connection Flags

Metric M12 Metric: from M20 to M55

Low voltage connectionLV porcelain bushings for 420 V - B2*

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

Connections 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

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] - - - - - - 1600 1600 1600 1600 1600 1600 - - - -

Material - - - - - - Copper Copper Copper Copper Copper Copper - - - -

* Please contact Ormazabal for ohter secondary voltages and technical values above 2500 kVA.

Medium voltage connectionConnectors 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

-



14

Type of transformers

Conventional Transformers designed according to the requirements of the Ecodesign directive from the European Commission (No 548 / 2014) suitable for the European Union markets and worldwide where accepted.

Characteristics 24 kV: A0 BK

MV Porcelain Bushings MV Plug-In Bushings

250 - 2500 kVA

Lifting Eyes LV Bushings

MV Bushings

Wheel Frames (skids)

Thermometer Pocket

MV Regulation Tap Changer

Filling Device

Draining and Sampling Device

Earth connectionM12

F

J

H H

A

H

B

F

K

D2

M LC

J

D1

Lifting Eyes LV Bushings MV Bushings


Thermometer Pocket


Earth connectionM12

Filling Device

F F

D2

M

LD

3

C

KJ J

H H

AB

H


MV Porcelain Bushings

Up to 160 kVA

LV Bushings

MV Bushings Surge arresters support (Op) Lifting Eyes

Latching eyes

Filling Device



Thermometer Pocket (optional)


Earth connection M12

F

JK

A

H H H

B

D2 D

1C

LL

80

J

140

F



15

Conventional


Electrical characteristics 24 kV A0 BK Rated Power [kVA] 50 100 160 250 400 630 800 1000 1250 1600 2000 2500*

Rated Voltage (Ur)Primary [kV] <24

No-load Secondary [V] 420

Vector Group Dyn11

No-Load Losses - P0 [W] List A0 90 145 210 300 430 600 650 770 950 1200 1450 1750

Load Losses - Pk [W] List Bk 875 1475 2000 2750 3850 5400 7000 9000 11000 14000 18000 22000

Short-Circuit Impedance (%) at 75°C 4 6

Sound Power Level LwA [dB] List A0 39 41 44 47 50 52 53 55 56 58 60 60

Voltage drop at full load (%)cosƒ=1 1.81 1.54 1.32 1.17 1.04 0.93 1.05 1.08 1.06 1.05 1.08 1.06

cosƒ=0.8 3.57 3.43 3.31 3.22 3.13 3.06 4.35 4.37 4.35 4.35 4.37 4.35

Efficiency (%)

load 100%cosƒ=1 98.11 98.41 98.64 98.79 98.94 99.06 99.05 99.03 99.05 99.06 99.04 99.06

cosƒ=0.8 97.64 98.02 98.30 98.50 98.68 98.82 98.82 98.79 98.82 98.83 98.80 98.83

load 75%cosƒ=1 98.47 98.72 98.90 99.02 99.14 99.24 99.24 99.23 99.24 99.25 99.23 99.25

cosƒ=0.8 98.10 98.40 98.63 98.78 98.93 99.05 99.05 99.04 99.06 99.06 99.04 99.07

Dimensions [mm] 24 kV A0 BK

Aluminum WindingsRated Power [kVA] 50 100 160 250 400 630 800 1000 1250 1600 2000 2500

A (Length) 910 940 1046 1276 1426 1526 1706 1776 1996 1940 1960 2060

B (Width) 643 733 743 876 876 936 1046 1106 1256 1180 1160 1320

C (Height to cover) 759 767 873 932 1032 1133 1163 1163 1208 1540 1760 1810

D1 (Height to HV with porcelain bushings) 1144 1152 1258 1317 1417 1518 1548 1548 1593 1925 2145 2195

D3 (Heigth to HV with plug-in-bushings) 849 857 963 1022 1122 1223 1253 1253 1298 1630 1850 1900

D2 (Height to LV with Flags) 919 927 1033 1166 1266 1394 1496 1496 1541 1910 2130 2240

F (Distance betwen HV bushings) 275 275 275 275 275 275 275 275 275 275 275 275

H (Distance betwen centre LV bushings) 80 80 80 150 150 150 150 150 150 200 200 200

J (Wheel axis distance) 520 520 520 670 670 670 670 670 820 820 820 1070

K (Wheels width) 40 40 40 40 40 40 40 40 70 70 70 70

Ø (Wheels) 125 125 125 125 125 125 125 125 200 200 200 200

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

Distance between pole mounting brackets 530 530 530 – – – – – – – – –

Oil volume (Litres) 138 148 213 300 377 441 572 582 692 980 1190 1380

Total weight (Kg) 486 572 753 1075 1389 1817 2233 2342 2826 4120 4970 5830

Other dimensions on request. (*) Please contact Ormazabal for technical values above 2500 kVA.



16


Characteristics 24 kV: A0 CK


50 - 1000 kVA

F

K

H

J

A

THERMOMETER POCKET

1U 1V

N 2U 2V

HH

LIFTINGEYE-BOLTS

F

DRAININGAND SAMPLING

DEVICE

M-12 EARTHINGTERMINAL

LM

J

B

1W

FILLING DEVICE

2W

D2

C

D1

OFF-LOAD REGULATIONTAP CHANGER

HV BUSHINGSM-12 250A

WHEEL BASE

MV Bushings

Lifting Eyes

Wheel Frames

Thermometer Pocket

Off-Load Regualation Tap Changer

Filling Device

Draining and Sampling

Device

Earth connectionM12

FILLING DEVICE



DEVICEK

THERMOMETER POCKET

A

1U 1V 1W

N

J

2W2U 2V

HH H

FLIFTINGEYE-BOLTS F

LMB

J

C

D3D

2

WHEEL BASE

HIGH VOLTAGE BUSHINGS S24

K180AR-1 250 AMV BushingsLifting Eyes

Wheel Frames

Thermometer Pocket


DeviceEarth

connectionM12

Filling Device



17

Conventional


Electrical characteristics 24 kV A0 CK Rated Power [kVA] 50 100 160 250 400 630 800 1000



Vector Group Dyn11

No-Load Losses - P0 [W] List A0 90 145 210 300 430 600 650 770

Load Losses - Pk [W] List Ck 1100 1750 2350 3250 4600 6500 8400 10 500

Short-Circuit Impedance (%) at 75°C 4 6

Sound Power Level LwA [dB] List A0 39 41 44 47 50 52 53 55

Voltage drop at full load (%)cosƒ=1 2.26 1.81 1.54 1.37 1.22 1.11 1.22 1.22

cosƒ=0.8 3.77 3.57 3.43 3.33 3.25 3.17 4.47 4.47

Efficiency (%)

load 100%cosƒ=1 97.68 98.14 98.43 98.60 98.76 98.89 98.88 98.89

cosƒ=0.8 97.11 97.69 98.04 98.26 98.45 98.61 98.61 98.61

load 75%cosƒ=1 98.15 98.52 98.74 98.88 99.00 99.11 99.11 99.12

cosƒ=0.8 97.69 98.15 98.43 98.60 98.76 98.89 98.89 98.90

Dimensions [mm] 24 kV A0 CK Aluminum Windings

Rated Power [kVA] 50 100 160 250 400 630 800 1000

A (Length) 1028 1020 1226 1070 1216 1496 1586 1686

B (Width) 728 750 786 833 876 936 946 1006

D1 (Height to HV with porcelain bushings and wheels) 1314 1365 1506 1538 1658 1722 1782 1850

C (Height to cover) 819 870 1011 1043 1163 1227 1287 1355

D2 (Height to LV without Flags) 955 1006 1147 1218 1338 1412 1502 1570

F (Distance betwen HV bushings) 275 275 275 275 275 275 275 275

H (Distance betwen centre LV bushings) 80 80 80 150 150 150 150 150

J (Wheel axis distance) 520 520 520 670 670 670 670 670

K (Wheels width) 40 40 40 40 40 40 40 40

Ø (Wheels) 125 125 125 125 125 125 125 125

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

Oil volume (Litres) 160 180 230 275 355 390 590 590

Total weight (Kg) 530 690 960 1150 1540 1990 2500 2730

Other dimensions on request.



18




50 - 2500 kVA


MV Bushings


Thermometer Pocket


Filling Device


Earth connectionM12

F

J

H H

A

H

B

F

K

D2

M LC

J

D1



Thermometer Pocket


Earth connectionM12

Filling Device

F F

D2

M

LD

3

C

KJ J

H H

AB

H




19

Conventional


Electrical characteristics 36 kV A0 BK Rated Power [kVA] 50 100 160 250 400 630 800 1000 1250 1600 2000 2500*



Vector Group Dyn11

No-Load Losses - P0 [W] List A0 103.5 166.7 241.5 345 494.5 690 747.5 885.5 1093 1380 1668 2013

Load Losses - Pk [W] List Bk 963 1623 2200 3025 4235 5940 7700 9900 12100 15400 19800 24200

Short-Circuit Impedance (%) at 75°C 4.5 6

Sound Power Level LwA [dB] List A0 39 41 44 47 50 52 53 55 56 58 60 68

Voltage drop at full load (%)cosƒ=1 2.01 1.71 1.47 1.30 1.15 1.04 1.14 1.17 1.14 1.14 1.17 1.14

cosƒ=0.8 4.00 3.85 3.70 3.61 3.51 3.44 4.41 4.43 4.41 4.41 4.43 4.41

Efficiency (%)

load 100%cosƒ=1 97.91 98.24 98.50 98.67 98.83 98.96 98.96 98.93 98.96 98.96 98.94 98.96

cosƒ=0.8 97.40 97.81 98.13 98.34 98.54 98.70 98.70 98.67 98.70 98.71 98.68 98.71

load 75%cosƒ=1 98.31 98.58 98.78 98.92 99.05 99.15 99.16 99.15 99.16 99.17 99.15 99.17

cosƒ=0.8 97.89 98.23 98.48 98.65 98.82 98.94 98.95 98.94 98.96 98.96 98.94 98.97

Dimensions [mm] 36 kV A0 BK

Aluminum WindingsRated Power [kVA] 50 100 160 250 400 630 800 1000 1250 1600 2000 2500

A (Length) 1040 1040 1110 1206 1220 1280 1596 1596 1796 1960 1960 2160

B (Width) 758 763 746 796 886 936 986 996 1056 1220 1180 1340

D1 (Height to HV with porcelain bushings and wheels) 1364 1457 1587 1668 1770 1831 1837 1847 2137 1980 2160 2240

C (Height to cover) 801 894 1024 1120 1222 1283 1289 1299 1534 1540 1720 1800





K (Wheels width) 40 40 40 40 40 40 40 40 70 70 70 70

Ø (Wheels) 125 125 125 125 125 125 125 125 200 200 200 200

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


Total weight (Kg) 653 849 1064 1331 1589 2143 2694 3098 3565 4000 4800 5680

Other dimensions on request. (*) Please contact Ormazabal for technical values above 2500 kVA.



20




50 - 1000 kVA

F

K

H

J

A

THERMOMETER POCKET

1U 1V

N 2U 2V

HH

LIFTINGEYE-BOLTS

F


DEVICE


LM

J

B

1W

FILLING DEVICE

2W

D2

C

D1

OFF-LOAD REGULATIONTAP CHANGER

HV BUSHINGSM-12 250A

WHEEL BASE

MV Bushings

Lifting Eyes

Wheel Frames

Thermometer Pocket

Off-Load Regualation Tap Changer

Filling Device


Device

Earth connectionM12

FILLING DEVICE



DEVICEK

THERMOMETER POCKET

A

1U 1V 1W

N

J

2W2U 2V

HH H

FLIFTINGEYE-BOLTS F

LMB

J

C

D3D

2

WHEEL BASE

HIGH VOLTAGE BUSHINGS S24

K180AR-1 250 AMV BushingsLifting Eyes

Wheel Frames

Thermometer Pocket


DeviceEarth

connectionM12

Filling Device



21

Conventional


Electrical characteristics 36 kV A0 CK Rated Power [kVA] 50 100 160 250 400 630 800 1000



Vector Group Dyn11

No-Load Losses - P0 [W] List A0 103.5 166.7 241.5 345 494.5 690 747.5 885.5

Load Losses - Pk [W] List Ck 1210 1925 2585 3575 5060 7150 9240 11500

Short-Circuit Impedance (%) at 75°C 4.5 6

Sound Power Level LwA [dB] List A0 39 41 44 47 50 52 53 55

Voltage drop at full load (%)cosƒ=1 2.52 2.03 1.70 1.52 1.36 1.23 1.33 1.33

cosƒ=0.8 4.58 4.34 3.84 3.74 3.64 3.56 4.54 4.54

Efficiency (%)

load 100%cosƒ=1 97.44 97.95 98.26 98.46 98.63 98.77 98.77 98.77

cosƒ=0.8 96.82 97.45 97.84 98.08 98.29 98.47 98.46 98.47

load 75%cosƒ=1 97.95 98.36 98.61 98.76 98.90 99.01 99.02 99.03

cosƒ=0.8 97.45 97.96 98.26 98.45 98.63 98.77 98.78 98.78

Dimensions [mm] 36 kV A0 CK

Aluminum WindingsRated Power [kVA] 50 100 160 250 400 630 800 1000

A (Length) 1018 1010 1256 1150 1246 1616 1626 1736

B (Width) 743 748 796 788 886 1006 976 1060

D1 (Height to HV with porcelain bushings and wheels) 1431 1457 1603 1606 1716 1726 1840 1863

C (Height to cover) 868 894 1040 1058 1168 1178 1292 1315

D2 (Height to LV without Flags) 1004 1030 1176 1233 1343 1363 1507 1530

F (Distance betwen HV bushings) 375 375 375 375 375 375 375 375

H (Distance betwen centre LV bushings) 80 80 80 150 150 150 150 150

J (Wheel axis distance) 520 520 520 670 670 670 670 670

K (Wheels width) 40 40 40 40 40 40 40 40

Ø (Wheels) 125 125 125 125 125 125 125 125

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

Oil volume (Litres) 200 200 200 320 356 494 548 573

Total weight (Kg) 635 701 988 1122 1417 2040 2382 2768

Other dimensions on request.



22

ConventionalTransformers designed according to the requirements of the IEC standard suitable for worldwide markets out of the European Union.

Characteristics 24 kV: D0 CK


250 - 2500 kVA


MV Bushings


Thermometer Pocket


Filling Device


Earth connectionM12

F

J

H H

A

H

B

F

K

D2

M LC

J

D1



Thermometer Pocket


Earth connectionM12

Filling Device

F F

D2

M

LD

3

C

KJ J

H H

A

B

H



Up to 160 kVA

LV Bushings


Latching eyes

Filling Device






F

JK

A

H H H

B

D2 D

1C

LL

80

J

140

F



23

Conventional

Characteristics 24 kV: D0 CK

Electrical characteristics 24 kV D0 CK Rated Power [kVA] 50 100 160 250 400 630 800 1000 1250 1600 2000 2500**

Rated Voltage (Ur)Primary [kV] < 24No-load Secondary [V] 420

Vector Group Yzn11/Dyn11* Dyn11No-Load Losses - P0 [W] List D0 145 260 375 530 750 1030 1150 1400 1750 2200 2700 3200Load Losses - Pk [W] List Ck 1100 1750 2350 3250 4600 6500 8400 10500 13500 17000 21000 26500Short-Circuit Impedance (%) at 75°C 4 4 4 4 4 4 6 6 6 6 6 6Sound Power Level LwA [dB] List D0 50 54 57 60 63 65 66 68 69 71 73 76

Voltage drop at full load (%)cosƒ=1 2.26 1.81 1.54 1.37 1.22 1.11 1.22 1.22 1.25 1.24 1.22 1.23cosƒ=0.8 3.77 3.57 3.43 3.33 3.25 3.17 4.47 4.47 4.49 4.48 4.47 4.47

Efficiency (%)load 100%

cosƒ=1 97.57 98.03 98.33 98.51 98.68 98.82 98.82 98.82 98.79 98.81 98.83 98.83cosƒ=0.8 96.98 97.55 97.92 98.15 98.36 98.53 98.53 98.53 98.50 98.52 98.54 98.54

load 75%cosƒ=1 98.00 98.37 98.61 98.76 98.90 99.02 99.03 99.04 99.01 99.03 99.04 99.04cosƒ=0.8 97.52 97.97 98.26 98.45 98.63 98.78 98.79 98.80 98.77 98.79 98.81 98.81

Dimensions [mm] 24 kV D0 CK

Copper WindingsRated Power [kVA] 50 100 160 250 400 630 800 1000 1250 1600 2000 2500**

A (Length) 830 940 1126 1286 1436 1516 1806 1866 1876 1796 1916 2056

B (Width) 620 723 738 886 896 916 1106 1186 1166 1166 1216 1416

C (Height to cover) 727 799 761 821 901 982 982 1042 1092 1557 1741 1716







K (Wheels width) 40 40 40 40 40 40 40 40 70 70 70 70

Ø (Wheels) 125 125 125 125 125 125 125 125 200 200 200 200

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



Total weight (Kg) 424 581 755 1015 1307 1753 2163 2440 2758 3801 4784 5497

Aluminum WindingsRated Power [kVA] 50 100 160 250 400 630 800 1000 1250 1600 2000 2500**

A (Length) 910 940 1046 1276 1426 1526 1706 1776 1996 1866 2116 2286

B (Width) 643 733 743 876 876 936 1046 1106 1256 1256 1306 1426

C (Height to cover) 759 767 873 932 1032 1133 1163 1163 1208 1661 1771 1831







K (Wheels width) 40 40 40 40 40 40 40 40 70 70 70 70

Ø (Wheels) 125 125 125 125 125 125 125 125 200 200 200 200

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



Total weight (Kg) 486 572 753 1075 1389 1817 2233 2342 2826 3864 4460 5458

Other dimensions on request. (*) dimensions could be affected depending on the chosen vector group.(**) Please contact Ormazabal for technical values above 2500 kVA.



24

Conventional Transformers designed according to the requirements of the IEC standard suitable for worldwide markets out of the European Union.

Characteristics 24 kV: C0 CK


250 - 2500 kVA


MV Bushings


Thermometer Pocket


Filling Device


Earth connectionM12

F

J

H H

A

H

B

F

K

D2

M LC

J

D1



Thermometer Pocket


Earth connectionM12

Filling Device

F F

D2

M

LD

3

C

KJ J

H H

A

B

H



Up to 160 kVA

LV Bushings


Latching eyes

Filling Device






F

JK

A

H H H

B

D2 D

1C

LL

80

J

140

F



25

Conventional

Characteristics 24 kV: C0 CK

Electrical characteristics 24 kV C0 CK

Rated Power [kVA] 50 100 160 250 400 630 800 1000 1250 1600 2000 2500**


Vector Group Yzn11/Dyn11* Dyn11No-Load Losses - P0 [W] List C0 125 210 300 425 610 860 930 1100 1350 1700 2100 2500Load Losses - Pk [W] List Ck 1100 1750 2350 3250 4600 6500 8400 10500 13500 17000 21000 26500Short-Circuit Impedance (%) at 75°C 4 4 4 4 4 4 6 6 6 6 6 6Sound Power Level LwA [dB] List C0 47 49 52 55 58 60 61 63 64 66 68 71



cosƒ=1 97.61 98.08 98.37 98.55 98.71 98.85 98.85 98.85 98.83 98.84 98.86 98.85cosƒ=0.8 97.03 97.61 97.97 98.20 98.40 98.56 98.56 98.57 98.54 98.56 98.58 98.57

load 75%cosƒ=1 98.06 98.43 98.67 98.81 98.95 99.05 99.07 99.07 99.06 99.07 99.08 99.08cosƒ=0.8 97.58 98.05 98.34 98.52 98.69 98.82 98.84 98.85 98.82 98.84 98.85 98.85

Dimensions [mm] 24 kV C0 CK


A (Length) 830 940 1126 1286 1436 1516 1806 1866 1876 1796 1776 2106

B (Width) 620 723 738 886 896 916 1106 1186 1166 1166 1226 1306

C (Height to cover) 727 799 761 821 901 982 982 1042 1092 1557 1681 1706







K (Wheels width) 40 40 40 40 40 40 40 40 70 70 70 70

Ø (Wheels) 125 125 125 125 125 125 125 125 200 200 200 200

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



Total weight (Kg) 407 647 785 1082 1351 1792 2207 2509 2832 3865 4379 5150


A (Length) 910 940 1046 1276 1426 1526 1706 1776 1996 1856 2076 2056

B (Width) 643 733 743 876 876 936 1046 1106 1256 1216 1286 1456

C (Height to cover) 759 767 873 932 1032 1133 1163 1163 1208 1651 1771 1881







K (Wheels width) 40 40 40 40 40 40 40 40 70 70 70 70

Ø (Wheels) 125 125 125 125 125 125 125 125 200 200 200 200

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



Total weight (Kg) 510 601 791 1129 1458 1908 2345 2459 2967 3777 4492 5542




26


Characteristics 24 kV: C0 BK


250 - 2500 kVA


MV Bushings


Thermometer Pocket


Filling Device


Earth connectionM12

F

J

H H

A

H

B

F

K

D2

M LC

J

D1



Thermometer Pocket


Earth connectionM12

Filling Device

F F

D2

M

LD

3

C

KJ J

H H

A

B

H



Up to 160 kVA

LV Bushings


Latching eyes

Filling Device






F

JK

A

H H H

B

D2 D

1C

LL

80

J

140

F



27

Conventional

Characteristics 24 kV: C0 BK

Electrical characteristics 24 kV C0 BK Rated Power [kVA] 50 100 160 250 400 630 800 1000 1250 1600 2000 2500**


Vector Group Yzn11/Dyn11* Dyn11No-Load Losses - P0 [W] List C0 125 210 300 425 610 860 930 1100 1350 1700 2100 2500Load Losses - Pk [W] List Bk 875 1475 2000 2750 3850 5400 7000 9000 11000 14000 18000 22000Short-Circuit Impedance (%) at 75°C 4 4 4 4 4 4 6 6 6 6 6 6Sound Power Level LwA [dB] List C0 47 49 52 55 58 60 61 63 64 66 68 71



cosƒ=1 98.04 98.34 98.58 98.75 98.90 99.02 99.02 99.00 99.02 99.03 99.00 99.03cosƒ=0.8 97.56 97.94 98.23 98.44 98.63 98.77 98.78 98.75 98.78 98.79 98.76 98.79

load 75%cosƒ=1 98.38 98.63 98.83 98.96 99.08 99.18 99.20 99.19 99.20 99.21 99.19 99.21cosƒ=0.8 97.98 98.30 98.54 98.70 98.86 98.98 99.00 98.98 99.00 99.01 98.99 99.02

Dimensions [mm] 24 kV C0 BK


A (Length) 890 940 1126 1286 1436 1466 1866 1866 1836 1796 1836 2076

B (Width) 623 723 738 886 896 916 1186 1186 1126 1166 1216 1366

C (Height to cover) 752 737 761 821 901 1052 1042 1042 1202 1657 1741 1716







K (Wheels width) 40 40 40 40 40 40 40 40 70 70 70 70

Ø (Wheels) 125 125 125 125 125 125 125 125 200 200 200 200

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



Total weight (Kg) 502 579 815 1083 1414 1911 2526 2632 3035 4255 4975 5405


A (Length) 910 980 1040 1296 1446 1516 1886 1886 1996 1736 2066 2236

B (Width) 643 743 758 896 886 906 1166 1166 1256 1216 1266 1306

C (Height to cover) 759 757 893 1001 1091 1192 1173 1173 1248 1701 1781 1826







K (Wheels width) 40 40 40 40 40 40 40 40 70 70 70 70

Ø (Wheels) 125 125 125 125 125 125 125 125 200 200 200 200

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



Total weight (Kg) 493 580 754 1195 1518 2136 2579 2570 2908 3796 4741 5573




28


Characteristics 24 kV: B0 BK


250 - 2500 kVA


MV Bushings


Thermometer Pocket


Filling Device


Earth connectionM12

F

J

H H

A

H

B

F

K

D2

M LC

J

D1



Thermometer Pocket


Earth connectionM12

Filling Device

F F

D2

M

LD

3

C

KJ J

H H

A

B

H



Up to 160 kVA

LV Bushings


Latching eyes

Filling Device






F

JK

A

H H H

B

D2 D

1C

LL

80

J

140

F



29

Conventional

Characteristics 24 kV: B0 BK

Electrical characteristics 24 kV B0 BK

Rated Power [kVA] 50 100 160 250 400 630 800 1000 1250 1600 2000 2500**


Vector Group Yzn11/Dyn11* Dyn11No-Load Losses - P0 [W] List B0 110 180 260 360 520 730 800 940 1150 1450 1800 2150Load Losses - Pk [W] List Bk 875 1475 2000 2750 3850 5400 7000 9000 11000 14000 18000 26500Short-Circuit Impedance (%) at 75°C 4 4 4 4 4 4 6 6 6 6 6 6Sound Power Level LwA [dB] List B0 42 44 47 50 53 55 56 58 59 61 63 66



cosƒ=1 98.07 98.37 98.61 98.77 98.92 99.04 99.03 99.02 99.04 99.04 99.02 98.87cosƒ=0.8 97.60 97.97 98.27 98.47 98.65 98.80 98.80 98.77 98.80 98.81 98.78 98.59

load 75%cosƒ=1 98.42 98.67 98.86 98.99 99.11 99.21 99.22 99.21 99.22 99.23 99.21 99.10cosƒ=0.8 98.03 98.35 98.58 98.74 98.89 99.01 99.02 99.01 99.03 99.04 99.02 98.88

Dimensions [mm] 24 kV B0 BK


A (Length) 865 940 1066 1226 1376 1446 1666 1866 1606 1616 1866 2156

B (Width) 620 723 738 866 896 926 986 1186 1186 1236 1216 1366

C (Height to cover) 757 779 803 901 921 1053 1053 1112 1163 1611 1659 1726







K (Wheels width) 40 40 40 40 40 40 40 40 70 70 70 70

Ø (Wheels) 125 125 125 125 125 125 125 125 200 200 200 200

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



Total weight (Kg) 491 620 774 1102 1361 1859 2468 2761 2966 4130 4256 5559


A (Length) 930 980 1030 1296 1326 1356 1756 1796 1806 1876 2076 2216

B (Width) 648 753 763 896 946 986 1026 976 1046 1136 1256 1296

C (Height to cover) 759 776 873 1001 1111 1202 1223 1213 1369 1721 1781 1856







K (Wheels width) 40 40 40 40 40 40 40 40 70 70 70 70

Ø (Wheels) 125 125 125 125 125 125 125 125 200 200 200 200

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



Total weight (Kg) 527 666 794 1166 1526 2074 2584 2568 3266 3979 4623 5805




30


Characteristics 24 kV: E0 DK


250 - 2500 kVA


MV Bushings


Thermometer Pocket


Filling Device


Earth connectionM12

F

J

H H

A

H

B

F

K

D2

M LC

J

D1



Thermometer Pocket


Earth connectionM12

Filling Device

F F

D2

M

LD

3

C

KJ J

H H

A

B

H



Up to 160 kVA

LV Bushings


Latching eyes

Filling Device






F

JK

A

H H H

B

D2 D

1C

LL

80

J

140

F



31

Conventional

Characteristics 24 kV: E0 DK

Electrical characteristics 24 kV E0 DK

Rated Power [kVA] 50 100 160 250 400 630 800 1000 1250 1600 2000 2500**


Vector Group Yzn11/Dyn11* Dyn11No-Load Losses - P0 [W] List E0 190 320 460 650 930 1300 1400 1700 2100 20000 26000 32000Load Losses - Pk [W] List Dk 1350 2150 3100 4200 6000 8400 10500 13000 16000 2600 3100 3500Short-Circuit Impedance (%) at 75°C 4 4 4 4 4 4 6 6 6 6 6 6Sound Power Level LwA [dB] List E0 55 59 62 65 68 70 71 73 74 76 78 81



cosƒ=1 97.01 97.59 97.82 98.10 98.30 98.48 98.53 98.55 98.57 98.61 98.57 98.60cosƒ=0.8 96.29 97.00 97.29 97.63 97.88 98.11 98.17 98.20 98.22 98.27 98.21 98.26

load 75%cosƒ=1 97.53 98.00 98.20 98.42 98.59 98.74 98.80 98.81 98.83 98.86 98.83 98.87cosƒ=0.8 96.93 97.51 97.76 98.03 98.24 98.43 98.50 98.52 98.54 98.58 98.54 98.59

Dimensions [mm] 24 kV E0 DK


A (Length) 830 940 1126 1386 1476 1596 1866 1866 2036 2096 2116 2176

B (Width) 620 743 738 886 976 1076 1166 1186 1326 1356 1396 1386

C (Height to cover) 749 809 769 811 881 992 970 1092 1127 1561 1611 1717







K (Wheels width) 40 40 40 40 40 40 40 40 70 70 70 70

Ø (Wheels) 125 125 125 125 125 125 125 125 200 200 200 200

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



Total weight (Kg) 418 596 742 1034 1350 1804 2094 2428 2754 3671 4415 4856


A (Length) 990 1020 1046 1276 1426 1606 1706 1816 1996 1946 2136 2336

B (Width) 663 758 743 876 876 1016 1046 1146 1256 1206 1376 1506

C (Height to cover) 740 769 873 932 1032 1133 1163 1183 1248 1751 1671 1811







K (Wheels width) 40 40 40 40 40 40 40 40 70 70 70 70

Ø (Wheels) 125 125 125 125 125 125 125 125 200 200 200 200

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

Distance between pole mounting brackets 530 530 530 – – – – – – – – n/a


Total weight (Kg) 539 590 714 962 1324 1807 2150 2359 2839 3980 4174 5425




32


Characteristics 36 kV: B036 BK36


250 - 2500 kVA


MV Bushings


Thermometer Pocket


Filling Device


Earth connectionM12

F

J

H H

A

H

B

F

K

D2

M LC

J

D1



Thermometer Pocket


Earth connectionM12

Filling Device

F F

D2

M

LD

3

C

KJ J

H H

A

B

H



Up to 160 kVA

LV Bushings


Latching eyes

Filling Device






F

JK

A

H H H

B

D2 D

1C

LL

80

J

140

F



33

Conventional

Characteristics 36 kV: B036 BK36

Electrical characteristics 36 kV B036 BK36

Rated Power [kVA] 50 100 160 250 400 630 800 1000 1250 1600 2000 2500**

Rated Voltage (Ur)Primary [kV] <30No-load Secondary [V] 420

Vector Group Yzn11/Dyn11* Dyn11No-Load Losses - P0 [W] List B036 190 320 460 650 930 1300 1500 1700 2100 2600 3150 3800Load Losses - Pk [W] List Bk36 1250 1950 2550 3500 4900 6500 8400 10500 13500 1700 21000 26500Short-Circuit Impedance (%) at 75°C 4.5 4.5 4.5 4.5 4.5 4.5 6 6 6 6 6 6Sound Power Level LwA [dB] List B036 52 56 59 62 65 67 68 68 70 71 73 76



cosƒ=1 97.20 97.78 98.15 98.37 98.56 98.78 98.78 98.79 98.77 98.79 98.81 98.88cosƒ=0.8 96.53 97.24 97.70 97.97 98.21 98.48 98.48 98.50 98.46 98.49 98.51 98.61

load 75%cosƒ=1 97.67 98.15 98.45 98.62 98.79 98.96 98.97 99.00 98.98 99.00 99.01 99.09cosƒ=0.8 97.11 97.69 98.06 98.28 98.49 98.71 98.72 98.75 98.72 98.75 98.77 98.86

Dimensions [mm] 36 kV B036 BK36


A (Length) 890 940 1126 1286 1436 1516 1806 1866 1876 1956 1976 2236

B (Width) 623 723 738 886 896 916 1106 1186 1166 1236 1256 1376

C (Height to cover) 727 799 761 821 901 982 982 1042 1092 1491 1646 1711







K (Wheels width) 40 40 40 40 40 40 40 40 70 70 70 70

Ø (Wheels) 125 125 125 125 125 125 125 125 200 200 200 200

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



Total weight (Kg) 446 560 745 1018 1306 1776 2125 2455 2763 3743 4221 5422


A (Length) 990 1000 1076 1276 1426 1526 1706 1776 2016 1906 2036 2236

B (Width) 663 763 743 876 876 936 1046 1106 1236 1216 1286 1416

C (Height to cover) 740 791 873 932 1032 1133 1163 1203 1227 1661 1791 1831







K (Wheels width) 40 40 40 40 40 40 40 40 70 70 70 70

Ø (Wheels) 125 125 125 125 125 125 125 125 200 200 200 200

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



Total weight (Kg) 544 544 730 1051 1336 1782 2172 2507 2914 3781 4610 5415




34


Characteristics 36 kV: A036 AK36


250 - 2500 kVA


MV Bushings


Thermometer Pocket


Filling Device


Earth connectionM12

F

J

H H

A

H

B

F

K

D2

M LC

J

D1



Thermometer Pocket


Earth connectionM12

Filling Device

F F

D2

M

LD

3

C

KJ J

H H

A

B

H



Up to 160 kVA

LV Bushings


Latching eyes

Filling Device






F

JK

A

H H H

B

D2 D

1C

LL

80

J

140

F



35

Conventional

Characteristics 36 kV: A036 AK36

Electrical characteristics 36 kV A036 AK36

Rated Power [kVA] 50 100 160 250 400 630 800 1000 1250 1600 2000 2500**

Rated Voltage (Ur)Primary [kV] <30No-load Secondary [V] 420

Vector Group Yzn11/Dyn11* Dyn11No-Load Losses - P0 [W] List A036 160 270 390 550 790 1100 1300 1450 1750 2200 2700 3200Load Losses - Pk [W] List Ak36 1050 1650 2150 3000 4150 5500 7000 8900 11500 14500 18000 22500Short-Circuit Impedance (%) at 75°C 4.5 4.5 4.5 4.5 4.5 4.5 6 6 6 6 6 6Sound Power Level LwA [dB] List A036 50 54 57 60 63 65 66 67 68 69 71 73



cosƒ=1 97.64 98.12 98.44 98.60 98.78 98.96 99.02 98.98 98.95 98.97 98.98 98.98cosƒ=0.8 97.06 97.66 98.05 98.26 98.48 98.71 98.78 98.72 98.69 98.71 98.72 98.73

load 75%cosƒ=1 98.04 98.43 98.68 98.82 98.97 99.12 99.20 99.15 99.13 99.14 99.15 99.16cosƒ=0.8 97.56 98.04 98.36 98.53 98.71 98.90 99.00 98.94 98.92 98.93 98.94 98.95

Dimensions [mm] 36 kV A036 AK36


A (Length) 1040 940 1126 1226 1436 1516 1866 1866 1836 1816 2026 2116

B (Width) 633 733 738 866 896 946 1136 1186 1126 1196 1226 1266

C (Height to cover) 761 719 801 901 901 1052 1052 1112 1272 1657 1657 1767







K (Wheels width) 40 40 40 40 40 40 40 40 70 70 70 70

Ø (Wheels) 125 125 125 125 125 125 125 125 200 200 200 200

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



Total weight (Kg) 521 572 779 1040 1419 1976 2.422 2612 3055 4340 4570 5526


A (Length) 980 980 1040 1296 1326 1396 1766 1886 1976 1946 2096 2276

B (Width) 653 758 768 896 946 1046 1076 1166 1196 1176 1256 1366

C (Height to cover) 740 767 893 1001 1091 1142 1224 1173 1301 1701 1781 1821







K (Wheels width) 40 40 40 40 40 40 40 40 70 70 70 70

Ø (Wheels) 125 125 125 125 125 125 125 125 200 200 200 200

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



Total weight (Kg) 552 633 762 1132 1440 1932 2338 2594 3239 3986 4668 5933




36

Non-conventional

transforma.fine

Small-sized compact transformers, transforma.fine, that are highly resistant to high temperatures, are incorporated in the wide range of transformers immersed in dielectric liquid, both mineral oil or natural biodegradable fluid, transforma.organic.

They are characterised by their high capability to adapt to reduced spaces and for use in specific applications such as wind power generation.

Standards

IEC60076-1 IEC60076-14 IEC60076-16

Technical features

Up to 36 kV Up to 5000 kVA Width ≥846 mm

More information: CA409EN.

transforma.tpc

Self-protected transformers, transforma.tpc, immersed in dielectric liquid, both mineral oil or natural biodegradable fluid, transforma.organic. for indoor or on-pole uses, mainly for rural network applications.

They are characterised by their resistance against overloads, the low losses and reduced noise levels.

Standards

IEC 60076-13 HN 52-S-24

Technical features

Up to 36 kV Up to 630 kVA (transformer substation) Up to 160 kVA (pole)

HV fused protection and switching performance.

More information: CA120FR & CA337FR.

Extended range solutions

OLTC (On load tap changer)

Transformers that solve the problem of voltage unbalance due to distributed generation.

Distribution substations with small solar or small wind are exposed to big voltage variations between days with low consumption and high generation (sunny or windy days) and days with low generation and high consumption. It is necesary a voltage regulation to allow the system work properly.

Standards

IEC 60076 series

Technical features

Up to 1000 kVA and 24 kV

Photovoltaic applications

Step-up transformers for photovoltaic applications featured by the multiple energitations carried out per year and low losses.

Multiple windings to be feeded by several inverters (Dy11y11, Ynd11d11, Dy11y11y11...) so that the number of transformers is reduced.

Standards

IEC60076-1 EN 50464-1

Technical features

Up to 52 kV Up to 4000 kVA



37

Containerized generators

Transformers mutti voltage and multi frequency that allow the adaptation of the electrical supply coming from a generator according to the characteristics of any country.

The different voltages in MV are obtained by:

● Different LV generation voltages

● Different vector groups (changing the vector group tap changer)

● Different tapping (changing the voltage selection tap changer)

● Different % adjustment over the main tap (changing the voltage changeover tap changer)

Standards

IEC60076

Technical features

Up to 5000 kVA and 36 kV

High voltage shore connection systems (HVSC)

Transformers with a very balanced voltage (voltage variations <3%) for complete power solutions to supply energy to ships in harbours (HV shore connection systems).

The solution is based in a containerized compact substation where the transformer is installed.

This turn-key solution is characterized by:

● On load voltage regulation

● Plug and play concept: Extensible cable to plug the facility to ships

● Advanced communication protocol between ship and substation

Standards

IEC60076

ISO80005

Technical features

Up to 10 000 kVA and 52 kV

Auxiliary services in nuclear power plants

Transformers specifically designed for high requisite environments, such as auxiliary circuits in nuclear power plants, where safety, long endurance, robustness, continuity of service and high performance are mandatory.

Extended features ● Technical values ● >36 kV

● > 5000 kVA

● Direct connection to Ormazabal cubicles

● Design for ultra-compact Ormazabal substations

● High temperature transformers



38

Handling, installation and after salesHandling Conventional transformers have fourbracing eyes located on the corners for transportation and so prevent damage to the cooling elements.

The transformers can be transported and handled using a forklift truck, crane or their own wheels:

Forklift truck

Transformer fitted and fastened to a pallet.

Crane

The tank is robust enough for lifting the transformer by means of the lifting eyes.

Own wheels

For handling and installation instructions request the corresponding manuals to Ormazabal.

Indoor

Inside mobile / prefabricated transformer substations

● Turn-key solutions (fully assembling, testing and transportation from factory) ● Uniform quality

● Significant reduction of installation costs and time

● Dielectric liquid collector

● Possibility of transformer on-site installation

● Wide range of Ormazabal’s TS: Walk-in, underground, kiosk, compact…

● Availability of having an operational Transformer Substation in short time

● Under pole solutions to protect the transformer against solar radiation and harsh environmental conditions as well as avoid bird nesting problems

Inside wind turbines ● Off-shore & On-shore wind farms

● Over 10 years of experience in the offshore wind sector

● transforma.fine: Small-sized compact transformers, that are resistant to high temperatures, are characterised by their high capability to adapt to reduced spaces and for use in specific applications such as wind power generation

≥846 mm

Inside buildings

The transformer site mustbe designed according to the local regulations and allow for adequate cooling.



39

Outdoor

Substations

transforma in outdoor facilities.

On-pole

Rural distribution transformers for on-pole installation: transforma conventional or tpc.

Commissioning and after sales

Services

Technical assistance

FAT Pick-up & delivery

Supervision & installation

Commissioning Training

Warranty Inspection & maintenance

Spare part

Repair Retrofitting Recycling

Engineering Procurement EPCM

Recycling and end-of-lifeAs a part of its after sales services, Ormazabal provides electrical utilities and electrical end users recycling services for its transformers.

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 9001certification.

Furthermore, our strong commitment to the environment is reflected in the implementation of an environmental management 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.

40

Notes



41

Notes



CA-109-EN-1508

www.ormazabal.com

Date post:	04-Oct-2019
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