MV/LV Transformers for
Distribution Network Solutions
transforma
Distribution Transformers
Up to 36 kV and up to 5 MVA
IEC Standards
Reliable innovation. Personal solutions.
www.ormazabal.com
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Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
Contents
Introduction__________________________ 1
Preface
1
Your Electrical Network
2
Your Business and DNS Applications
2
Our Product Map (SSS & DNS)
3
Main features_________________________ 4
Safety
4
Reliability
6
Efficiency 6
Sustainability 7
Continuous innovation
7
Technical details_______________________ 8
Family
8
Technical data
9
Constructive structure
9
Dielectric liquids
10
Design characteristics__________________ 12
Equipment
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.
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Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
Introduction
Preface
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.
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
Focusing on the needs of our customers have developed our own products
and mastering new technologies allows and solutions during our more
us to offer products which comply with than a century long consolidated
these requirements.
history, always by establishing close
relationship with our customers aimed
Our specialisation in Medium Voltage
at achieving mutual long term benefits.
is backed by the certification of our
transformers in major European
electrical companies.
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.
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.
Kalkbukt PV Plant
(Republic of South Africa)
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.
Athletic Bilbao Stadium
(Bilbao, Spain)
Public Distribution
EDF utility (France)
1
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Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
Your Electrical Network
"Your dedicated partner for reliable and intelligent electrical network".
Your Business and DNS Applications
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.
2
PUBLIC
DISTRIBUTION
END USERS
RES
Infrastructure
Industry
Services
Wind
Solar
Dispatchable RES
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Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
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.
Our Business Lines
SSS: Substation Solution
for primary distribution
We provide our clients with
personalised projects for efficient
energy management via Primary and
Secondary Distribution equipment
and solutions.
DNS: Distribution Network
Solutions for secondary
distribution
Our products for your segment
cpg.1
cpg.0
gae1250kmax
cgm.3
amc
gae
cibor
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nvl.cibor
Power transformers
cgmcosmos
[IEC - ANSI/IEEE]
ga
Prefabricated
substations
ormacontainer
cgmcosmos
[HN]
ea
transfoorma Distribution transformers
ekorsys family
Protection, automation and control
Conventional
Non-conventional
transforma.tpc
transforma.fine
Extended range solutions
Oil
CURRENT® family
Advanced metering, sensing
&
analytics, monitoring and
communications
organic
Low voltage board
Biodegradable
dielectric
liquid
Concrete prefabricated transformer substations (TS)
Underground
Walk-in
Compact
Concrete enclosure for transformer substations (TS)
Underground
Walk-in
Modular
Metallic
prefabricated TS
CEADS
Switching nodes
Metallic enclosure
for TS
Photovoltaic
substation
Mobile
substation
3
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Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
Main features
Safety
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.
Routine test
Type test
All of the transformers manufactured
are subjected to the following
routine tests, in accordance with
IEC 60076-1:
With our customer’s agreement,
the following tests are performed in
accordance with current international
regulations:
●● Winding resistance measurement
●● Temperature-rise test
●● Measurement of the voltage ratio
and verification of the vector group
●● Dielectric type tests:
Lightning impulse (LI) test
●● 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]
4
●● Lightning impulse (LI) test
●● Measurement of the short-circuit
impedance and load losses
28
38
50
70
3
10
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 μs).
[kV]
75
95
125 170
20
20
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Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
Special tests
Additional tests
Special tests specifically requested by
the customer:
Dielectric Oil Tests
●● Special dielectric tests
●● Partial discharge measurement test
●● Winding capacities measurement –
earth and between windings
●● Zero-sequence (homopolar)
impedance measurement
(in three-phase transformers)
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
●● Ability to withstand Short-circuit
test (IEC 60076-5), performed in
accredited external and internal
laboratories (HPL)
●● Water content
●● Sound level measurement
(IEC 60076-10)
●● Dielectric dissipation factor
●● Measurement of no-load current
harmonics
●● Acidity
●● Measurement of insulation
resistance and/or measurement of
the dissipation factor (tan delta) of
the insulation capacitances
●● Viscosity at 40°C
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
●● Breakdown voltage
●● Interfacial tension
●● Flash point
5
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Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
Reliability
Efficiency
The quality and reliability of our
products is demonstrated through
the testing and certification of
our transformers in independent,
internationally-renowned laboratories.
Dielectric Liquid completely
immersed Hermetically-Sealed
Transformer
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.
●● 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
6
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 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.
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Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
PCB Free
●● Our transformers are only
manufactured using new
components and without any PCBs,
in strict compliance with current
regulations
Sustainability
Continuous innovation
Sustainability, understood as the best
compromise between satisfying social
demands, caring for the environment
and financial aspects.
Our commitment to innovation places us
at the technological forefront of Europe.
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
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.
●● Equipment durability
Caring for the Environment
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.
●● 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.
7
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Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
Technical details
Family
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Non-conventional
Conventional
Distribution
Transformers
transforma.tpc
transforma.fine
Ur (max.)
24 kV / 36 kV
24 kV / 36 kV
36 kV
Standard
IEC-HN
HN
IEC
Power (max.)
25 - 5000 kVA
50 - 630 kVA
5 MVA
Losses
A0Bk/A0Ck/D0Ck/C0Ck/C0Bk/E0Dk/
B036Bk36/A036Ak36
Consult availability
Consult availability
Self-protected
transformers
Small-sized
transformers
that are highly
resistant to high
temperatures
Oil
Dielectric liquid
immersed
hermetically
sealed
completely filled
transformer
Biodegradable
dielectric liquid
>> organic
Extended range solutions
- 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
Transformer with natural biodegradable dielectric liquid
(*) Other solutions on request
Applicable electrical standards
IEC
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
8
Implementation of the Ecodesign Guideline 2009/125/EG with regard to power transformers
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Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
Technical data
●● Three-phase transformers, for
indoor or outdoor installation
Constructive structure
Active part
5
●● Dielectric liquid immersed
transformers: Hermeticallysealed completely immersed in
oil in accordance with standard
IEC 60296
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.
●● ONAN cooling
Tank and dielectric
●● Colour: RAL 7033 (other colours
under request)
●● Conventional transformers:
4
3
The transformer’s tank and the
dielectric liquid provide the necessary
insulation and cooling.
●● From 25 to 5000 kVA
6
2
1
1 Tank and dielectric liquid
2 MV and LV windings
●● Insulation level: 24 and 36 kV
3 MV plug-in bushings
The data and values shown correspond
to the normal service conditions
referred to in standard IEC 60076-1.
4 Low voltage (LV) terminals
5 Thermometer pocket
For other configurations, please contact
Ormazabal.
6 Ferro magnetic core
WindingsAdvantages
●● Concentric windings
●● Insulation between layers: Cellulose with epoxy
resin which compacts the coils, once cured
●● Coils are manufactured using the latest techniques
and machinery
●● Expertise in coil cooling
●● Careful manufacturing of coils and cooling channels
●● Use of high-quality cellulosic materials
●● Optimum handling and storage to preserve
insulation properties
Connections and Tap Changer
●● MV and LV terminals
●● Off-circuit Tap changer
Tank and Dielectric Liquid
●● Elastic Corrugated tank with
cooling fins
●● Completely filled with
dielectric liquid and
hermetically sealed tank
●● Immersed in dielectric liquid
●● Surface treatment and paint
●● Optimised to withstand short circuit
forces
●● Improved heat dissipation in the
windings
●● Guaranteed insulation
Advantages
●● Transformer connection to the
outside
●● Secondary voltage can be adjusted
precisely
Advantages
●● Increased heat dissipation surface
●● Absorption of variations in the volume of the dielectric
liquid caused by changes in its temperature
●● Mechanical and electrical protection
●● 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
●● Lower noise level
●● Better behaviour in the event of overloads and
harmonics
●● Protection against corrosion, atmospheric agents,
insolation and impacts
9
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Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
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
10
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Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
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)
Advantages compared to other
type of transformers
In relation to dry transformers:
In relation to silicone transformers:
●● Higher biodegradability
Any transformer with dielectric liquid
has the following advantages against
dry transformers:
●● Zero toxicity against aquatic
organisms
●● Better losses level:
●● Higher level of safety:
●● Higher fire and flash points than the rest
Dry transformers have considerably
higher no-load and load losses than
dielectric liquid transformers
of dielectric liquids
●● Non-toxic product
●● Recyclable and reusable at the end of its
●● Lower environmental impact at
the end of its service life (recyclable
and reusable dielectric liquid)
In relation to mineral oil transformers:
●● Higher biodegradability
(This difference can increase annual
operation losses by more than 50%)
service life
●● Increases the service life of the
transformer:
●● Better behaviour against fire
●● Lower noise:
●● Increases the service life of the cellulosic
●● Lower environmental impact at
the end of its service life (recyclable
and reusable dielectric liquid)
Dry transformers have a much
higher noise level than dielectric
liquid transformers (difference in
acoustic power between 10 and
15 dB)
insulations thanks to its high water
saturation point
●● Lower generation of gas during the
electrical stress that it endures during
operation
Noise
●● Overloadability
●● Severe oxidation tests show that the acids
generated in the natural ester do not
decrease its breakdown voltage or affect
copper negatively
Losses
Environmental
impact
organic
●● Higher life expectancy
Dry
●● Higher robustness against
vibrations, environmental
conditions and transient
phenomena in the electrical
network
Biodegradability
●● Less space required, as it does not
require a safety perimeter
Fire resistance
(fire point temp.)
organic
range
Mineral oil range
(common values)
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
Natural ester vs other dielectrics
Fire Point
Biodegradability
Mineral oil
Hydrocarbons with
high molecular weight
Silicone
Oils
Synthetic
Esters
160°C
312°C
340°C
322°C
360°C
low
low
null
high
very high
Natural
Esters
11
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Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
Design characteristics
Equipment
Conventional transformers
16
1
4.a
4.b
15
9
16
2.b
7
12
3
2.a
8
10
6
14
11
5
13
1
2.a
2.b
3
4.a
4.b
5
6
7
8
9
10
11
12
13
14
15
16
12
Off-circuit regulation tap changer (can only be operated without voltage)
MV porcelain bushings
MV plug-in bushings
LV porcelain bushings
LV connection flags (≥630 kVA)
LV single pole busbar bushings
Earthing terminals in the tank
Draining and sampling device
Filling device
Protection relay
Functions: Internal tank pressure control, dielectric liquid temperature control,
oil level control and gas detection
Rating plate
2 Lifting eyes
4 Latching eyes
4 Pulling eyes
Thermometer pocket
Thermometer: measures the temperature of the top layer of the insulation liquid
Available with 2 contacts (alarm and trigger) and upper limit marker
Wheels (≥250 kVA)
Dielectric liquid collecting device
Terminal cover box
Pole mounting brackets and support for surge arresters (application for pole mounted
transformers up to 160 kVA)
StandardOptional
IEC 60214
EN 50180
•
•
EN 50386
•
•
•
•
EN 50180
EN 50216-4
EN 50216-4
EN 50464-1
EN 50216-3
•
•
•
EN 50464-1
EN 50464-1
EN 50464-1
EN 50464-1
EN-50216-4
•
•
•
•
•
•
•
EN-50216-4
•
•
•
•
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Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
LV single phase Busbar
Bushings (optional)
LV connection Flags
Metric: from M20 to M55
Metric M12
Low voltage connection
LV porcelain bushings for 420 V - B2*
Rated Power
Rated current
Dimension - Metric d1
Material
[kVA]
25
40
50
63
100
160
250
400
500
630
800
1000
1250
1600
2000
2500
[A]
250
250
250
250
250
250
630
630
1000
1000
1600
1600
2000
3150
3150
4000
M12
M12
M12
M12
M12
M12
M20
M20
M30
M30
M42
M42
M42
M48
M48
M55
Brass
Brass
Brass
Brass
Brass
Brass
Brass
Brass
Brass
Brass
Brass
Brass
Copper
Copper
Copper
Copper
M12
M12
M12
M12
M12
M12
M20
M20
M30
M30
M42
M42
M42
M48
M48
M55
Connections parts – LV Flags
Metric
e [mm]
f0 [mm]
Ø [mm]
-
-
-
-
-
-
32
32
32
32
40
40
40
40
40
70
40
40
40
40
40
40
60
60
60
60
100
100
100
120
120
150
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
Rated current
Material
[kVA]
25
40
50
63
100
160
250
400
500
630
800
1000
1250
1600
2000
2500
[A]
-
-
-
-
-
-
1600
1600
1600
1600
1600
1600
-
-
-
-
-
-
-
-
-
-
Copper
Copper
Copper
Copper
Copper
Copper
-
-
-
-
* Please contact Ormazabal for ohter secondary voltages and technical values above 2500 kVA.
Medium voltage connection
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
-
13
transfoorma
Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
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
MV Bushings
F
F
LV Bushings
MV Bushings
J
K
J
Draining and
Sampling Device
H H H
Filling
Device
Thermometer
Pocket
Filling
Device
K
J
J
Draining and
Sampling
Device
H H H
B
MV
Regulation
Tap Changer
A
A
MV Porcelain Bushings
Up to 160 kVA
F
Lifting
Eyes
F
MV Bushings
Surge arresters support (Op)
LV Bushings
D1
80
C
D2
140
Latching
eyes
Filling
Device
L
H
H
H
Draining and
Sampling
Device
Thermometer Pocket
(optional)
B
MV Regulation
Tap Changer
A
14
K
J
L
Earth
connection
M12
Wheel Frames
(skids)
J
L
Earth
connection
M12
B
MV
Regulation
Tap
Changer
Wheel
Frames
(skids)
M
Earth
connection
M12
M
Wheel
Frames
(skids)
L
C
C
D3
D1
LV Bushings
D2
F
D2
Lifting
Eyes
F
Thermometer Pocket
transfoorma
Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
Conventional
Characteristics 24 kV: A0 BK
Electrical characteristics
24 kV A0 BK
Rated Power [kVA]
Rated Voltage (Ur)
50
100
160
250
400
630
800
1000
1250
1600
2000
2500*
<24
Primary [kV]
420
No-load Secondary [V]
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
List A0
39
41
44
47
50
52
53
55
56
58
60
60
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
Short-Circuit Impedance (%) at 75°C
Sound Power Level LwA [dB]
Voltage drop at full load (%)
load
100%
Efficiency (%)
load
75%
4
6
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
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
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 Windings
Rated Power [kVA]
A (Length)
B (Width)
C (Height to cover)
D1 (Height to HV with porcelain bushings)
D3 (Heigth to HV with plug-in-bushings)
D2 (Height to LV with Flags)
F (Distance betwen HV bushings)
H (Distance betwen centre LV bushings)
J (Wheel axis distance)
K (Wheels width)
Ø (Wheels)
L (Wheel)
Distance between pole mounting brackets
50
910
643
759
1144
849
919
275
80
520
40
125
110
530
100
940
733
767
1152
857
927
275
80
520
40
125
110
530
160
1046
743
873
1258
963
1033
275
80
520
40
125
110
530
250
1276
876
932
1317
1022
1166
275
150
670
40
125
110
–
400
1426
876
1032
1417
1122
1266
275
150
670
40
125
110
–
630
1526
936
1133
1518
1223
1394
275
150
670
40
125
110
–
800
1706
1046
1163
1548
1253
1496
275
150
670
40
125
110
–
1000
1776
1106
1163
1548
1253
1496
275
150
670
40
125
110
–
1250
1996
1256
1208
1593
1298
1541
275
150
820
70
200
165
–
1600
1940
1180
1540
1925
1630
1910
275
200
820
70
200
165
–
2000
1960
1160
1760
2145
1850
2130
275
200
820
70
200
165
–
2500
2060
1320
1810
2195
1900
2240
275
200
1070
70
200
165
–
Oil volume (Litres)
Total weight (Kg)
138
486
148
572
213
753
300
1075
377
1389
441
1817
572
2233
582
2342
692
2826
980
4120
1190
4970
1380
5830
Other dimensions on request.
(*) Please contact Ormazabal for technical values above 2500 kVA.
15
transfoorma
Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
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 CK
MV Porcelain Bushings
MV Plug-In Bushings
50 - 1000 kVA
F
HV BUSHINGS
MVM-12
Bushings
250A
F
LIFTING
LIFTING
Lifting Eyes
EYE-BOLTS
Lifting
Eyes
EYE-BOLTS
HIGH VOLTAGE
BUSHINGS S24
F
MV
Bushings
K180AR-1
250 A
K
J
H
L
J
H
Filling
FILLINGDevice
DEVICE
H
H
2U
N
2V
2U
N
B
B
2W
Off-Load
Regualation
OFF-LOAD REGULATION
Tap
Changer
TAP CHANGER
1U
1V
A
16
1W
1U
1V
A
D3
J
ThermometerPOCKET
Pocket
THERMOMETER
ThermometerPOCKET
Pocket
THERMOMETER
2V
H
J
Earth
connection
M-12
EARTHING
M12
TERMINAL
2W
H
Filling
FILLINGDevice
DEVICE
K
M
Draining
and
DRAINING
ANDSampling
SAMPLING
Device
DEVICE
M
Draining
and
DRAINING
ANDSampling
SAMPLING
Device
DEVICE
Earth
connection
M-12
EARTHING
TERMINAL
M12
Wheel
WHEELFrames
BASE
Wheel
Frames
WHEEL BASE
L
C
C
D1
D2
D2
F
1W
transfoorma
Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
Conventional
Characteristics 24 kV: A0 CK
Electrical characteristics
24 kV A0 CK
Rated Power [kVA]
Rated Voltage (Ur)
50
100
160
250
400
630
800
1000
<24
Primary [kV]
420
No-load Secondary [V]
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
List A0
39
41
44
47
50
52
53
55
cosƒ=1
2.26
1.81
1.54
1.37
1.22
1.11
1.22
1.22
Short-Circuit Impedance (%) at 75°C
Sound Power Level LwA [dB]
Voltage drop at full load (%)
load
100%
Efficiency (%)
load
75%
4
6
cosƒ=0.8
3.77
3.57
3.43
3.33
3.25
3.17
4.47
4.47
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
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
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
Rated Power [kVA]
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.
17
transfoorma
Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
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 36 kV: A0 BK
MV Porcelain Bushings
MV Plug-In Bushings
50 - 2500 kVA
Lifting
Eyes
MV Bushings
F
F
LV Bushings
MV Bushings
J
H H H
Filling
Device
A
18
Thermometer
Pocket
J
Filling
Device
H H H
J
Draining and
Sampling
Device
B
MV
Regulation
Tap Changer
A
L
K
Earth
connection
M12
J
B
MV
Regulation
Tap
Changer
Draining and
Sampling Device
Wheel
Frames
(skids)
M
K
Earth
connection
M12
M
Wheel
Frames
(skids)
L
C
C
D3
D1
LV Bushings
D2
F
D2
Lifting
Eyes
F
Thermometer Pocket
transfoorma
Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
Conventional
Characteristics 36 kV: A0 BK
Electrical characteristics
36 kV A0 BK
Rated Power [kVA]
Rated Voltage (Ur)
50
100
160
250
400
630
800
1000
1250
1600
2000
2500*
<30
Primary [kV]
420
No-load Secondary [V]
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
List A0
39
41
44
47
50
52
53
55
56
58
60
68
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
Short-Circuit Impedance (%) at 75°C
Sound Power Level LwA [dB]
Voltage drop at full load (%)
load
100%
Efficiency (%)
load
75%
4.5
6
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
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
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 Windings
Rated Power [kVA]
A (Length)
B (Width)
D1 (Height to HV with porcelain bushings and wheels)
C (Height to cover)
D2 (Height to LV with Flags)
F (Distance betwen HV bushings)
H (Distance betwen centre LV bushings)
J (Wheel axis distance)
K (Wheels width)
Ø (Wheels)
L (Wheel)
50
1040
758
1364
801
937
375
80
520
40
125
110
100
1040
763
1457
894
1030
375
80
520
40
125
110
160
1110
746
1587
1024
1160
375
80
520
40
125
110
250
1206
796
1668
1120
1295
375
150
670
40
125
110
400
1220
886
1770
1222
1397
375
150
670
40
125
110
630
1280
936
1831
1283
1468
375
150
670
40
125
110
800
1596
986
1837
1289
1504
375
150
670
40
125
110
1000
1596
996
1847
1299
1514
375
150
670
40
125
110
1250
1796
1056
2137
1534
1749
375
150
820
70
200
165
1600
1960
1220
1980
1540
1910
375
200
820
70
200
165
2000
1960
1180
2160
1720
2150
375
200
820
70
200
165
2500
2160
1340
2240
1800
2230
375
200
1070
70
200
165
Oil volume (Litres)
Total weight (Kg)
200
653
215
849
270
1064
350
1331
410
1589
480
2143
610
2694
630
3098
805
3565
1000
4000
1190
4800
1460
5680
Other dimensions on request.
(*) Please contact Ormazabal for technical values above 2500 kVA.
19
transfoorma
Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
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 36 kV: A0 CK
MV Porcelain Bushings
MV Plug-In Bushings
50 - 1000 kVA
F
HV BUSHINGS
MVM-12
Bushings
250A
F
LIFTING
LIFTING
Lifting Eyes
EYE-BOLTS
Lifting
Eyes
EYE-BOLTS
HIGH VOLTAGE
BUSHINGS S24
F
MV
Bushings
K180AR-1
250 A
K
J
H
L
J
H
Filling
FILLINGDevice
DEVICE
H
H
2U
N
2V
2U
N
B
B
2W
Off-Load
Regualation
OFF-LOAD REGULATION
Tap
Changer
TAP CHANGER
1U
1V
A
20
1W
1U
1V
A
D3
J
ThermometerPOCKET
Pocket
THERMOMETER
ThermometerPOCKET
Pocket
THERMOMETER
2V
H
J
Earth
connection
M-12
EARTHING
M12
TERMINAL
2W
H
Filling
FILLINGDevice
DEVICE
K
M
Draining
and
DRAINING
ANDSampling
SAMPLING
Device
DEVICE
M
Draining
and
DRAINING
ANDSampling
SAMPLING
Device
DEVICE
Earth
connection
M-12
EARTHING
TERMINAL
M12
Wheel
WHEELFrames
BASE
Wheel
Frames
WHEEL BASE
L
C
C
D1
D2
D2
F
1W
transfoorma
Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
Conventional
Characteristics 36 kV: A0 CK
Electrical characteristics
36 kV A0 CK
Rated Power [kVA]
Rated Voltage (Ur)
50
100
160
250
400
630
800
1000
<30
Primary [kV]
420
No-load Secondary [V]
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
List A0
39
41
44
47
50
52
53
55
cosƒ=1
2.52
2.03
1.70
1.52
1.36
1.23
1.33
1.33
Short-Circuit Impedance (%) at 75°C
Sound Power Level LwA [dB]
Voltage drop at full load (%)
load
100%
Efficiency (%)
load
75%
4.5
6
cosƒ=0.8
4.58
4.34
3.84
3.74
3.64
3.56
4.54
4.54
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
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 Windings
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
Rated Power [kVA]
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.
21
transfoorma
Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
Conventional
Transformers designed according to the requirements of the IEC standard suitable for worldwide markets out of the
European Union.
Characteristics 24 kV: D0 CK
MV Porcelain Bushings
MV Plug-In Bushings
250 - 2500 kVA
Lifting
Eyes
MV Bushings
F
F
LV Bushings
MV Bushings
J
K
J
Draining and
Sampling Device
H H H
Filling
Device
Thermometer
Pocket
Filling
Device
J
J
Draining and
Sampling
Device
H H H
B
MV
Regulation
Tap Changer
A
A
MV Porcelain Bushings
Up to 160 kVA
F
Lifting
Eyes
F
MV Bushings
Surge arresters support (Op)
LV Bushings
D1
80
C
D2
140
Latching
eyes
Filling
Device
L
H
H
H
Draining and
Sampling
Device
Thermometer Pocket
(optional)
B
MV Regulation
Tap Changer
A
22
K
J
L
Earth
connection
M12
Wheel Frames
(skids)
J
L
Earth
connection
M12
K
B
MV
Regulation
Tap
Changer
Wheel
Frames
(skids)
M
Earth
connection
M12
M
Wheel
Frames
(skids)
L
C
C
D3
D1
LV Bushings
D2
F
D2
Lifting
Eyes
F
Thermometer Pocket
transfoorma
Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
Conventional
Characteristics 24 kV: D0 CK
Electrical characteristics
24 kV D0 CK
50
Rated Power [kVA]
Rated Voltage (Ur)
100
160
250
400
630
Vector Group
No-Load Losses - P0 [W]
Load Losses - Pk [W]
Short-Circuit Impedance (%) at 75°C
Sound Power Level LwA [dB]
Voltage drop at full load (%)
load
100%
load
75%
Efficiency (%)
List D0
List Ck
List D0
cosƒ=1
cosƒ=0.8
cosƒ=1
cosƒ=0.8
cosƒ=1
cosƒ=0.8
800
1000
1250
1600
2000
2500**
Dyn11
1150
1400
8400
10500
6
6
66
68
1.22
1.22
4.47
4.47
98.82
98.82
98.53
98.53
99.03
99.04
98.79
98.80
1750
13500
6
69
1.25
4.49
98.79
98.50
99.01
98.77
2200
17000
6
71
1.24
4.48
98.81
98.52
99.03
98.79
2700
21000
6
73
1.22
4.47
98.83
98.54
99.04
98.81
3200
26500
6
76
1.23
4.47
98.83
98.54
99.04
98.81
< 24
420
Primary [kV]
No-load Secondary [V]
Yzn11/Dyn11*
145
260
1100
1750
4
4
50
54
2.26
1.81
3.77
3.57
97.57
98.03
96.98
97.55
98.00
98.37
97.52
97.97
375
2350
4
57
1.54
3.43
98.33
97.92
98.61
98.26
530
3250
4
60
1.37
3.33
98.51
98.15
98.76
98.45
750
4600
4
63
1.22
3.25
98.68
98.36
98.90
98.63
Dimensions [mm]
1030
6500
4
65
1.11
3.17
98.82
98.53
99.02
98.78
24 kV D0 CK
Copper Windings
Rated Power [kVA]
A (Length)
B (Width)
C (Height to cover)
D1 (Height to HV with porcelain bushings)
D3 (Heigth to HV with plug-in-bushings)
D2 (Height to LV with Flags)
F (Distance betwen HV bushings)
H (Distance betwen centre LV bushings)
J (Wheel axis distance)
K (Wheels width)
Ø (Wheels)
L (Wheel)
Distance between pole mounting brackets
50
830
620
727
1112
817
887
275
80
520
40
125
110
530
100
940
723
799
1184
889
959
275
80
520
40
125
110
530
160
1126
738
761
1146
851
921
275
80
520
40
125
110
530
250
1286
886
821
1206
911
1055
275
150
670
40
125
110
–
400
1436
896
901
1286
991
1135
275
150
670
40
125
110
–
630
1516
916
982
1367
1072
1243
275
150
670
40
125
110
–
800
1806
1106
982
1367
1072
1315
275
150
670
40
125
110
–
1000
1866
1186
1042
1427
1132
1375
275
150
670
40
125
110
–
1250
1876
1166
1092
1477
1182
1425
275
150
820
70
200
165
–
1600
1796
1166
1557
1947
1646
1927
275
200
820
70
200
165
–
2000
1916
1216
1741
2126
1830
2111
275
200
820
70
200
165
–
2500**
2056
1416
1716
2146
1850
2191
275
200
1070
70
200
165
–
Oil volume (Litres)
Total weight (Kg)
101
424
155
581
196
755
255
1015
323
1307
412
1753
481
2163
522
2440
554
2758
951
3801
1164
4784
1309
5497
Rated Power [kVA]
A (Length)
B (Width)
C (Height to cover)
D1 (Height to HV with porcelain bushings)
D3 (Heigth to HV with plug-in-bushings)
D2 (Height to LV with Flags)
F (Distance betwen HV bushings)
H (Distance betwen centre LV bushings)
J (Wheel axis distance)
K (Wheels width)
Ø (Wheels)
L (Wheel)
Distance between pole mounting brackets
50
910
643
759
1144
849
919
275
80
520
40
125
110
530
100
940
733
767
1152
857
927
275
80
520
40
125
110
530
160
1046
743
873
1258
963
1033
275
80
520
40
125
110
530
250
1276
876
932
1317
1022
1166
275
150
670
40
125
110
–
400
1426
876
1032
1417
1122
1266
275
150
670
40
125
110
–
630
1526
936
1133
1518
1223
1394
275
150
670
40
125
110
–
800
1706
1046
1163
1548
1253
1496
275
150
670
40
125
110
–
1000
1776
1106
1163
1548
1253
1496
275
150
670
40
125
110
–
1250
1996
1256
1208
1593
1298
1541
275
150
820
70
200
165
–
1600
1866
1256
1661
2046
1750
2031
275
200
820
70
200
165
–
2000
2116
1306
1771
2156
1860
2141
275
200
820
70
200
165
–
2500**
2286
1426
1831
2269
1966
2201
275
200
1070
70
200
165
–
Oil volume (Litres)
Total weight (Kg)
138
486
148
572
213
753
300
1075
377
1389
441
1817
572
2233
582
2342
692
2826
1005
3864
1182
4460
1520
5458
Aluminum Windings
Other dimensions on request.
(*) dimensions could be affected depending on the chosen vector group.
(**) Please contact Ormazabal for technical values above 2500 kVA.
23
transfoorma
Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
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
MV Porcelain Bushings
MV Plug-In Bushings
250 - 2500 kVA
Lifting
Eyes
MV Bushings
F
F
LV Bushings
MV Bushings
J
K
J
Draining and
Sampling Device
H H H
Filling
Device
Thermometer
Pocket
Filling
Device
J
J
Draining and
Sampling
Device
H H H
B
MV
Regulation
Tap Changer
A
A
MV Porcelain Bushings
Up to 160 kVA
F
Lifting
Eyes
F
MV Bushings
Surge arresters support (Op)
LV Bushings
D1
80
C
D2
140
Latching
eyes
Filling
Device
L
H
H
H
Draining and
Sampling
Device
Thermometer Pocket
(optional)
B
MV Regulation
Tap Changer
A
24
K
J
L
Earth
connection
M12
Wheel Frames
(skids)
J
L
Earth
connection
M12
K
B
MV
Regulation
Tap
Changer
Wheel
Frames
(skids)
M
Earth
connection
M12
M
Wheel
Frames
(skids)
L
C
C
D3
D1
LV Bushings
D2
F
D2
Lifting
Eyes
F
Thermometer Pocket
transfoorma
Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
Conventional
Characteristics 24 kV: C0 CK
Electrical characteristics
24 kV C0 CK
50
Rated Power [kVA]
Rated Voltage (Ur)
100
160
250
400
630
Vector Group
No-Load Losses - P0 [W]
Load Losses - Pk [W]
Short-Circuit Impedance (%) at 75°C
Sound Power Level LwA [dB]
Voltage drop at full load (%)
load
100%
load
75%
Efficiency (%)
List C0
List Ck
List C0
cosƒ=1
cosƒ=0.8
cosƒ=1
cosƒ=0.8
cosƒ=1
cosƒ=0.8
800
1000
1250
1600
2000
2500**
Dyn11
930
1100
8400
10500
6
6
61
63
1.22
1.22
4.47
4.47
98.85
98.85
98.56
98.57
99.07
99.07
98.84
98.85
1350
13500
6
64
1.25
4.49
98.83
98.54
99.06
98.82
1700
17000
6
66
1.24
4.48
98.84
98.56
99.07
98.84
2100
21000
6
68
1.22
4.47
98.86
98.58
99.08
98.85
2500
26500
6
71
1.23
4.47
98.85
98.57
99.08
98.85
< 24
420
Primary [kV]
No-load Secondary [V]
Yzn11/Dyn11*
125
210
1100
1750
4
4
47
49
2.26
1.81
3.77
3.57
97.61
98.08
97.03
97.61
98.06
98.43
97.58
98.05
300
2350
4
52
1.54
3.43
98.37
97.97
98.67
98.34
425
3250
4
55
1.37
3.33
98.55
98.20
98.81
98.52
610
4600
4
58
1.22
3.25
98.71
98.40
98.95
98.69
Dimensions [mm]
860
6500
4
60
1.11
3.17
98.85
98.56
99.05
98.82
24 kV C0 CK
Copper Windings
Rated Power [kVA]
A (Length)
B (Width)
C (Height to cover)
D1 (Height to HV with porcelain bushings)
D3 (Heigth to HV with plug-in-bushings)
D2 (Height to LV with Flags)
F (Distance betwen HV bushings)
H (Distance betwen centre LV bushings)
J (Wheel axis distance)
K (Wheels width)
Ø (Wheels)
L (Wheel)
Distance between pole mounting brackets
50
830
620
727
1112
817
887
275
80
520
40
125
110
530
100
940
723
799
1184
889
959
275
80
520
40
125
110
530
160
1126
738
761
1146
851
921
275
80
520
40
125
110
530
250
1286
886
821
1206
911
1055
275
150
670
40
125
110
–
400
1436
896
901
1286
991
1135
275
150
670
40
125
110
–
630
1516
916
982
1367
1072
1243
275
150
670
40
125
110
–
800
1806
1106
982
1367
1072
1315
275
150
670
40
125
110
–
1000
1866
1186
1042
1427
1132
1375
275
150
670
40
125
110
–
1250
1876
1166
1092
1477
1182
1425
275
150
820
70
200
165
–
1600
1796
1166
1557
1942
1646
1927
275
200
820
70
200
165
–
2000
1776
1226
1681
2066
1770
1951
275
200
820
70
200
165
–
2500**
2106
1306
1706
2091
1795
2136
275
200
1070
70
200
165
–
Oil volume (Litres)
Total weight (Kg)
98
407
149
647
190
785
264
1082
316
1351
389
1792
487
2207
505
2509
732
2832
910
3865
1007
4379
1126
5150
Rated Power [kVA]
A (Length)
B (Width)
C (Height to cover)
D1 (Height to HV with porcelain bushings)
D3 (Heigth to HV with plug-in-bushings)
D2 (Height to LV with Flags)
F (Distance betwen HV bushings)
H (Distance betwen centre LV bushings)
J (Wheel axis distance)
K (Wheels width)
Ø (Wheels)
L (Wheel)
Distance between pole mounting brackets
50
910
643
759
1144
849
919
275
80
520
40
125
110
530
100
940
733
767
1152
857
927
275
80
520
40
125
110
530
160
1046
743
873
1258
963
1033
275
80
520
40
125
110
530
250
1276
876
932
1317
1022
1166
275
150
670
40
125
110
–
400
1426
876
1032
1417
1122
1266
275
150
670
40
125
110
–
630
1526
936
1133
1518
1223
1394
275
150
670
40
125
110
–
800
1706
1046
1163
1548
1253
1496
275
150
670
40
125
110
–
1000
1776
1106
1163
1548
1253
1496
275
150
670
40
125
110
–
1250
1996
1256
1208
1593
1298
1541
275
150
820
70
200
165
–
1600
1856
1216
1651
2036
1740
2021
275
200
820
70
200
165
–
2000
2076
1286
1771
2156
1860
2141
275
200
820
70
200
165
–
2500**
2056
1456
1881
2319
2016
2311
275
200
1070
70
200
165
–
Oil volume (Litres)
Total weight (Kg)
131
510
141
601
202
791
285
1129
358
1458
419
1908
543
2345
553
2459
657
2967
946
3777
1181
4492
1413
5542
Aluminum Windings
Other dimensions on request.
(*) dimensions could be affected depending on the chosen vector group.
(**) Please contact Ormazabal for technical values above 2500 kVA.
25
transfoorma
Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
Conventional
Transformers designed according to the requirements of the IEC standard suitable for worldwide markets out of the
European Union.
Characteristics 24 kV: C0 BK
MV Porcelain Bushings
MV Plug-In Bushings
250 - 2500 kVA
Lifting
Eyes
MV Bushings
F
F
LV Bushings
MV Bushings
J
K
J
Draining and
Sampling Device
H H H
Filling
Device
Thermometer
Pocket
Filling
Device
J
J
Draining and
Sampling
Device
H H H
B
MV
Regulation
Tap Changer
A
A
MV Porcelain Bushings
Up to 160 kVA
F
Lifting
Eyes
F
MV Bushings
Surge arresters support (Op)
LV Bushings
D1
80
C
D2
140
Latching
eyes
Filling
Device
L
H
H
H
Draining and
Sampling
Device
Thermometer Pocket
(optional)
B
MV Regulation
Tap Changer
A
26
K
J
L
Earth
connection
M12
Wheel Frames
(skids)
J
L
Earth
connection
M12
K
B
MV
Regulation
Tap
Changer
Wheel
Frames
(skids)
M
Earth
connection
M12
M
Wheel
Frames
(skids)
L
C
C
D3
D1
LV Bushings
D2
F
D2
Lifting
Eyes
F
Thermometer Pocket
transfoorma
Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
Conventional
Characteristics 24 kV: C0 BK
Electrical characteristics
24 kV C0 BK
50
Rated Power [kVA]
Rated Voltage (Ur)
100
160
250
400
630
Vector Group
No-Load Losses - P0 [W]
Load Losses - Pk [W]
Short-Circuit Impedance (%) at 75°C
Sound Power Level LwA [dB]
Voltage drop at full load (%)
load
100%
load
75%
Efficiency (%)
List C0
List Bk
List C0
cosƒ=1
cosƒ=0.8
cosƒ=1
cosƒ=0.8
cosƒ=1
cosƒ=0.8
800
1000
1250
1600
2000
2500**
Dyn11
930
1100
7000
9000
6
6
61
63
1.05
1.08
4.35
4.37
99.02
99.00
98.78
98.75
99.20
99.19
99.00
98.98
1350
11000
6
64
1.06
4.35
99.02
98.78
99.20
99.00
1700
14000
6
66
1.05
4.35
99.03
98.79
99.21
99.01
2100
18000
6
68
1.08
4.37
99.00
98.76
99.19
98.99
2500
22000
6
71
1.06
4.35
99.03
98.79
99.21
99.02
< 24
420
Primary [kV]
No-load Secondary [V]
Yzn11/Dyn11*
125
210
875
1475
4
4
47
49
1.81
1.54
3.57
3.43
98.04
98.34
97.56
97.94
98.38
98.63
97.98
98.30
300
2000
4
52
1.32
3.31
98.58
98.23
98.83
98.54
425
2750
4
55
1.17
3.22
98.75
98.44
98.96
98.70
610
3850
4
58
1.04
3.13
98.90
98.63
99.08
98.86
Dimensions [mm]
860
5400
4
60
0.93
3.06
99.02
98.77
99.18
98.98
24 kV C0 BK
Copper Windings
Rated Power [kVA]
A (Length)
B (Width)
C (Height to cover)
D1 (Height to HV with porcelain bushings)
D3 (Heigth to HV with plug-in-bushings)
D2 (Height to LV with Flags)
F (Distance betwen HV bushings)
H (Distance betwen centre LV bushings)
J (Wheel axis distance)
K (Wheels width)
Ø (Wheels)
L (Wheel)
Distance between pole mounting brackets
50
890
623
752
1137
842
912
275
80
520
40
125
110
530
100
940
723
737
1122
827
897
275
80
520
40
125
110
530
160
1126
738
761
1146
851
921
275
80
520
40
125
110
530
250
1286
886
821
1206
911
1055
275
150
670
40
125
110
–
400
1436
896
901
1286
991
1135
275
150
670
40
125
110
–
630
1466
916
1052
1437
1142
1313
275
150
670
40
125
110
–
800
1866
1186
1042
1427
1132
1375
275
150
670
40
125
110
–
1000
1866
1186
1042
1427
1132
1375
275
150
670
40
125
110
–
1250
1836
1126
1202
1587
1292
1535
275
150
820
70
200
165
–
1600
1796
1166
1657
2042
1746
2027
275
200
820
70
200
165
–
2000
1836
1216
1741
2126
1830
2111
275
200
820
70
200
165
–
2500**
2076
1366
1716
2101
1805
2146
275
200
1070
70
200
165
–
Oil volume (Litres)
Total weight (Kg)
122
502
144
579
189
815
244
1083
313
1414
385
1911
547
2526
498
2632
596
3035
938
4255
1209
4975
1131
5405
Rated Power [kVA]
A (Length)
B (Width)
C (Height to cover)
D1 (Height to HV with porcelain bushings)
D3 (Heigth to HV with plug-in-bushings)
D2 (Height to LV with Flags)
F (Distance betwen HV bushings)
H (Distance betwen centre LV bushings)
J (Wheel axis distance)
K (Wheels width)
Ø (Wheels)
L (Wheel)
Distance between pole mounting brackets
50
910
643
759
1144
849
919
275
80
520
40
125
110
530
100
980
743
757
1142
847
917
275
80
520
40
125
110
530
160
1040
758
893
1278
983
1053
275
80
520
40
125
110
530
250
1296
896
1001
1386
1091
1235
275
150
670
40
125
110
–
400
1446
886
1091
1476
1181
1325
275
150
670
40
125
110
–
630
1516
906
1192
1577
1282
1453
275
150
670
40
125
110
–
800
1886
1166
1173
1558
1263
1506
275
150
670
40
125
110
–
1000
1886
1166
1173
1558
1263
1506
275
150
670
40
125
110
–
1250
1996
1256
1248
1633
1338
1581
275
150
820
70
200
165
–
1600
1736
1216
1701
2086
1790
2071
275
200
820
70
200
165
–
2000
2066
1266
1781
2166
1870
2151
275
200
820
70
200
165
–
2500**
2236
1306
1826
2264
1961
2256
275
200
1070
70
200
165
–
Oil volume (Litres)
Total weight (Kg)
137
493
165
580
213
754
315
1195
368
1518
475
2136
598
2579
589
2570
716
2908
964
3796
1168
4741
1449
5573
Aluminum Windings
Other dimensions on request.
(*) dimensions could be affected depending on the chosen vector group.
(**) Please contact Ormazabal for technical values above 2500 kVA.
27
transfoorma
Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
Conventional
Transformers designed according to the requirements of the IEC standard suitable for worldwide markets out of the
European Union.
Characteristics 24 kV: B0 BK
MV Porcelain Bushings
MV Plug-In Bushings
250 - 2500 kVA
Lifting
Eyes
MV Bushings
F
F
LV Bushings
MV Bushings
J
K
J
Draining and
Sampling Device
H H H
Filling
Device
Thermometer
Pocket
Filling
Device
J
J
Draining and
Sampling
Device
H H H
B
MV
Regulation
Tap Changer
A
A
MV Porcelain Bushings
Up to 160 kVA
F
Lifting
Eyes
F
MV Bushings
Surge arresters support (Op)
LV Bushings
D1
80
C
D2
140
Latching
eyes
Filling
Device
L
H
H
H
Draining and
Sampling
Device
Thermometer Pocket
(optional)
B
MV Regulation
Tap Changer
A
28
K
J
L
Earth
connection
M12
Wheel Frames
(skids)
J
L
Earth
connection
M12
K
B
MV
Regulation
Tap
Changer
Wheel
Frames
(skids)
M
Earth
connection
M12
M
Wheel
Frames
(skids)
L
C
C
D3
D1
LV Bushings
D2
F
D2
Lifting
Eyes
F
Thermometer Pocket
transfoorma
Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
Conventional
Characteristics 24 kV: B0 BK
Electrical characteristics
24 kV B0 BK
50
Rated Power [kVA]
Rated Voltage (Ur)
100
160
250
400
630
Vector Group
No-Load Losses - P0 [W]
Load Losses - Pk [W]
Short-Circuit Impedance (%) at 75°C
Sound Power Level LwA [dB]
Voltage drop at full load (%)
load
100%
load
75%
Efficiency (%)
List B0
List Bk
List B0
cosƒ=1
cosƒ=0.8
cosƒ=1
cosƒ=0.8
cosƒ=1
cosƒ=0.8
800
1000
1250
1600
2000
2500**
Dyn11
800
940
7000
9000
6
6
56
58
1.05
1.08
4.35
4.37
99.03
99.02
98.80
98.77
99.22
99.21
99.02
99.01
1150
11000
6
59
1.06
4.35
99.04
98.80
99.22
99.03
1450
14000
6
61
1.05
4.35
99.04
98.81
99.23
99.04
1800
18000
6
63
1.08
4.37
99.02
98.78
99.21
99.02
2150
26500
6
66
1.23
4.47
98.87
98.59
99.10
98.88
< 24
420
Primary [kV]
No-load Secondary [V]
Yzn11/Dyn11*
110
180
875
1475
4
4
42
44
1.81
1.54
3.57
3.43
98.07
98.37
97.60
97.97
98.42
98.67
98.03
98.35
260
2000
4
47
1.32
3.31
98.61
98.27
98.86
98.58
360
2750
4
50
1.17
3.22
98.77
98.47
98.99
98.74
520
3850
4
53
1.04
3.13
98.92
98.65
99.11
98.89
Dimensions [mm]
730
5400
4
55
0.93
3.06
99.04
98.80
99.21
99.01
24 kV B0 BK
Copper Windings
Rated Power [kVA]
A (Length)
B (Width)
C (Height to cover)
D1 (Height to HV with porcelain bushings)
D3 (Heigth to HV with plug-in-bushings)
D2 (Height to LV with Flags)
F (Distance betwen HV bushings)
H (Distance betwen centre LV bushings)
J (Wheel axis distance)
K (Wheels width)
Ø (Wheels)
L (Wheel)
Distance between pole mounting brackets
50
865
620
757
1142
847
917
275
80
520
40
125
110
530
100
940
723
779
1164
869
939
275
80
520
40
125
110
530
160
1066
738
803
1188
893
963
275
80
520
40
125
110
530
250
1226
866
901
1286
991
1135
275
150
670
40
125
110
–
400
1376
896
921
1306
1011
1155
275
150
670
40
125
110
–
630
1446
926
1053
1438
1143
1314
275
150
670
40
125
110
–
800
1666
986
1053
1438
1143
1386
275
150
670
40
125
110
–
1000
1866
1186
1112
1497
1202
1445
275
150
670
40
125
110
–
1250
1606
1186
1163
1548
1253
1496
275
150
820
70
200
165
–
1600
1616
1236
1611
1996
1700
1981
275
200
820
70
200
165
–
2000
1866
1216
1659
2044
1748
2029
275
200
820
70
200
165
–
2500**
2156
1366
1726
2111
1815
2156
275
200
1070
70
200
165
–
Oil volume (Litres)
Total weight (Kg)
118
491
147
620
191
774
231
1102
290
1361
412
1859
466
2468
526
2761
597
2966
834
4130
883
4256
1228
5559
Rated Power [kVA]
A (Length)
B (Width)
C (Height to cover)
D1 (Height to HV with porcelain bushings)
D3 (Heigth to HV with plug-in-bushings)
D2 (Height to LV with Flags)
F (Distance betwen HV bushings)
H (Distance betwen centre LV bushings)
J (Wheel axis distance)
K (Wheels width)
Ø (Wheels)
L (Wheel)
Distance between pole mounting brackets
50
930
648
759
1144
849
919
275
80
520
40
125
110
530
100
980
753
776
1161
866
936
275
80
520
40
125
110
530
160
1030
763
873
1258
963
1033
275
80
520
40
125
110
530
250
1296
896
1001
1386
1091
1235
275
150
670
40
125
110
–
400
1326
946
1111
1496
1201
1345
275
150
670
40
125
110
–
630
1356
986
1202
1587
1292
1463
275
150
670
40
125
110
–
800
1756
1026
1223
1608
1313
1556
275
150
670
40
125
110
–
1000
1796
976
1213
1598
1303
1546
275
150
670
40
125
110
–
1250
1806
1046
1369
1754
1459
1702
275
150
820
70
200
165
–
1600
1876
1136
1721
2106
1810
2091
275
200
820
70
200
165
–
2000
2076
1256
1781
2166
1870
2151
275
200
820
70
200
165
–
2500**
2216
1296
1856
2294
1991
2286
275
200
1070
70
200
165
–
Oil volume (Litres)
Total weight (Kg)
140
527
172
666
199
794
327
1166
388
1526
486
2074
644
2584
591
2568
749
3266
973
3979
1188
4623
1463
5805
Aluminum Windings
Other dimensions on request.
(*) dimensions could be affected depending on the chosen vector group.
(**) Please contact Ormazabal for technical values above 2500 kVA.
29
transfoorma
Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
Conventional
Transformers designed according to the requirements of the IEC standard suitable for worldwide markets out of the
European Union.
Characteristics 24 kV: E0 DK
MV Porcelain Bushings
MV Plug-In Bushings
250 - 2500 kVA
Lifting
Eyes
MV Bushings
F
F
LV Bushings
MV Bushings
J
K
J
Draining and
Sampling Device
H H H
Filling
Device
Thermometer
Pocket
Filling
Device
J
J
Draining and
Sampling
Device
H H H
B
MV
Regulation
Tap Changer
A
A
MV Porcelain Bushings
Up to 160 kVA
F
Lifting
Eyes
F
MV Bushings
Surge arresters support (Op)
LV Bushings
D1
80
C
D2
140
Latching
eyes
Filling
Device
L
H
H
H
Draining and
Sampling
Device
Thermometer Pocket
(optional)
B
MV Regulation
Tap Changer
A
30
K
J
L
Earth
connection
M12
Wheel Frames
(skids)
J
L
Earth
connection
M12
K
B
MV
Regulation
Tap
Changer
Wheel
Frames
(skids)
M
Earth
connection
M12
M
Wheel
Frames
(skids)
L
C
C
D3
D1
LV Bushings
D2
F
D2
Lifting
Eyes
F
Thermometer Pocket
transfoorma
Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
Conventional
Characteristics 24 kV: E0 DK
Electrical characteristics
24 kV E0 DK
50
Rated Power [kVA]
Rated Voltage (Ur)
100
160
250
400
630
Vector Group
No-Load Losses - P0 [W]
Load Losses - Pk [W]
Short-Circuit Impedance (%) at 75°C
Sound Power Level LwA [dB]
Voltage drop at full load (%)
load
100%
load
75%
Efficiency (%)
List E0
List Dk
List E0
cosƒ=1
cosƒ=0.8
cosƒ=1
cosƒ=0.8
cosƒ=1
cosƒ=0.8
800
1000
1250
1600
2000
2500**
Dyn11
1400
1700
10500
13000
6
6
71
73
1.48
1.47
4.64
4.63
98.53
98.55
98.17
98.20
98.80
98.81
98.50
98.52
2100
16000
6
74
1.45
4.62
98.57
98.22
98.83
98.54
20000
2600
6
76
1.42
4.60
98.61
98.27
98.86
98.58
26000
3100
6
78
1.47
4.63
98.57
98.21
98.83
98.54
32000
3500
6
81
1.45
4.62
98.60
98.26
98.87
98.59
< 24
420
Primary [kV]
No-load Secondary [V]
Yzn11/Dyn11*
190
320
1350
2150
4
4
55
59
2.76
2.21
4.33
3.75
97.01
97.59
96.29
97.00
97.53
98.00
96.93
97.51
460
3100
4
62
2.00
3.68
97.82
97.29
98.20
97.76
650
4200
4
65
1.75
3.54
98.10
97.63
98.42
98.03
930
6000
4
68
1.57
3.45
98.30
97.88
98.59
98.24
Dimensions [mm]
1300
8400
4
70
1.40
3.35
98.48
98.11
98.74
98.43
24 kV E0 DK
Copper Windings
Rated Power [kVA]
A (Length)
B (Width)
C (Height to cover)
D1 (Height to HV with porcelain bushings)
D3 (Heigth to HV with plug-in-bushings)
D2 (Height to LV with Flags)
F (Distance betwen HV bushings)
H (Distance betwen centre LV bushings)
J (Wheel axis distance)
K (Wheels width)
Ø (Wheels)
L (Wheel)
Distance between pole mounting brackets
50
830
620
749
1134
839
909
275
80
520
40
125
110
530
100
940
743
809
1194
899
969
275
80
520
40
125
110
530
160
1126
738
769
1154
859
929
275
80
520
40
125
110
530
250
1386
886
811
1196
901
1045
275
150
670
40
125
110
–
400
1476
976
881
1266
971
1115
275
150
670
40
125
110
–
630
1596
1076
992
1377
1082
1253
275
150
670
40
125
110
–
800
1866
1166
970
1355
1060
1303
275
150
670
40
125
110
–
1000
1866
1186
1092
1477
1182
1425
275
150
670
40
125
110
–
1250
2036
1326
1127
1512
1217
1460
275
150
820
70
200
165
–
1600
2096
1356
1561
1946
1650
1931
275
200
820
70
200
165
–
2000
2116
1396
1611
1996
1700
1981
275
200
820
70
200
165
–
2500**
2176
1386
1717
2102
1806
2147
275
200
1070
70
200
165
–
Oil volume (Litres)
Total weight (Kg)
105
418
162
596
201
742
270
1034
343
1350
422
1804
515
2094
573
2428
620
2754
915
3671
1078
4415
1134
4856
Rated Power [kVA]
A (Length)
B (Width)
C (Height to cover)
D1 (Height to HV with porcelain bushings)
D3 (Heigth to HV with plug-in-bushings)
D2 (Height to LV with Flags)
F (Distance betwen HV bushings)
H (Distance betwen centre LV bushings)
J (Wheel axis distance)
K (Wheels width)
Ø (Wheels)
L (Wheel)
Distance between pole mounting brackets
50
990
663
740
1125
830
900
275
80
520
40
125
110
530
100
1020
758
769
1154
859
929
275
80
520
40
125
110
530
160
1046
743
873
1258
963
1033
275
80
520
40
125
110
530
250
1276
876
932
1317
1022
1166
275
150
670
40
125
110
–
400
1426
876
1032
1417
1122
1266
275
150
670
40
125
110
–
630
1606
1016
1133
1518
1223
1394
275
150
670
40
125
110
–
800
1706
1046
1163
1548
1253
1496
275
150
670
40
125
110
–
1000
1816
1146
1183
1568
1273
1516
275
150
670
40
125
110
–
1250
1996
1256
1248
1633
1338
1581
275
150
820
70
200
165
–
1600
1946
1206
1751
2136
1840
2121
275
200
820
70
200
165
–
2000
2136
1376
1671
2056
1760
2041
275
200
820
70
200
165
–
2500**
2336
1506
1811
2249
1946
2241
275
200
1070
70
200
165
n/a
Oil volume (Litres)
Total weight (Kg)
170
539
206
590
218
714
311
962
388
1324
468
1807
590
2150
617
2359
765
2839
1114
3980
1035
4174
1494
5425
Aluminum Windings
Other dimensions on request.
(*) dimensions could be affected depending on the chosen vector group.
(**) Please contact Ormazabal for technical values above 2500 kVA.
31
transfoorma
Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
Conventional
Transformers designed according to the requirements of the IEC standard suitable for worldwide markets out of the
European Union.
Characteristics 36 kV: B036 BK36
MV Porcelain Bushings
MV Plug-In Bushings
250 - 2500 kVA
Lifting
Eyes
MV Bushings
F
F
LV Bushings
MV Bushings
J
K
J
Draining and
Sampling Device
H H H
Filling
Device
Thermometer
Pocket
Filling
Device
J
J
Draining and
Sampling
Device
H H H
B
MV
Regulation
Tap Changer
A
A
MV Porcelain Bushings
Up to 160 kVA
F
Lifting
Eyes
F
MV Bushings
Surge arresters support (Op)
LV Bushings
D1
80
C
D2
140
Latching
eyes
Filling
Device
L
H
H
H
Draining and
Sampling
Device
Thermometer Pocket
(optional)
B
MV Regulation
Tap Changer
A
32
K
J
L
Earth
connection
M12
Wheel Frames
(skids)
J
L
Earth
connection
M12
K
B
MV
Regulation
Tap
Changer
Wheel
Frames
(skids)
M
Earth
connection
M12
M
Wheel
Frames
(skids)
L
C
C
D3
D1
LV Bushings
D2
F
D2
Lifting
Eyes
F
Thermometer Pocket
transfoorma
Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
Conventional
Characteristics 36 kV: B036 BK36
Electrical characteristics
36 kV B036 BK36
50
Rated Power [kVA]
Rated Voltage (Ur)
100
160
250
400
630
Vector Group
No-Load Losses - P0 [W]
Load Losses - Pk [W]
Short-Circuit Impedance (%) at 75°C
Sound Power Level LwA [dB]
Voltage drop at full load (%)
load
100%
load
75%
Efficiency (%)
List B036
List Bk36
List B036
cosƒ=1
cosƒ=0.8
cosƒ=1
cosƒ=0.8
cosƒ=1
cosƒ=0.8
800
1000
1250
1600
2000
2500**
Dyn11
1500
1700
8400
10500
6
6
68
68
1.22
1.22
4.47
4.47
98.78
98.79
98.48
98.50
98.97
99.00
98.72
98.75
2100
13500
6
70
1.25
4.49
98.77
98.46
98.98
98.72
2600
1700
6
71
1.24
4.48
98.79
98.49
99.00
98.75
3150
21000
6
73
1.22
4.47
98.81
98.51
99.01
98.77
3800
26500
6
76
1.18
4.44
98.88
98.61
99.09
98.86
<30
420
Primary [kV]
No-load Secondary [V]
Yzn11/Dyn11*
190
320
1250
1950
4.5
4.5
52
56
2.57
2.03
4.26
4.01
97.20
97.78
96.53
97.24
97.67
98.15
97.11
97.69
460
2550
4.5
59
1.68
3.83
98.15
97.70
98.45
98.06
650
3500
4.5
62
1.49
3.72
98.37
97.97
98.62
98.28
930
4900
4.5
65
1.32
3.62
98.56
98.21
98.79
98.49
Dimensions [mm]
1300
6500
4.5
67
1.13
3.50
98.78
98.48
98.96
98.71
36 kV B036 BK36
Copper Windings
Rated Power [kVA]
A (Length)
B (Width)
C (Height to cover)
D1 (Height to HV with porcelain bushings)
D3 (Heigth to HV with plug-in-bushings)
D2 (Height to LV with Flags)
F (Distance betwen HV bushings)
H (Distance betwen centre LV bushings)
J (Wheel axis distance)
K (Wheels width)
Ø (Wheels)
L (Wheel)
Distance between pole mounting brackets
50
890
623
727
1180
862
887
375
80
520
40
125
110
530
100
940
723
799
1252
934
959
375
80
520
40
125
110
530
160
1126
738
761
1214
896
921
375
80
520
40
125
110
530
250
1286
886
821
1259
956
1055
375
150
670
40
125
110
–
400
1436
896
901
1339
1036
1135
375
150
670
40
125
110
–
630
1516
916
982
1420
1117
1243
375
150
670
40
125
110
–
800
1806
1106
982
1420
1117
1315
375
150
670
40
125
110
–
1000
1866
1186
1042
1480
1177
1375
375
150
670
40
125
110
–
1250
1876
1166
1092
1530
1227
1425
375
150
820
70
200
165
–
1600
1956
1236
1491
1929
1626
1861
375
200
820
70
200
165
–
2000
1976
1256
1646
2084
1781
2016
375
200
820
70
200
165
–
2500**
2236
1376
1711
2149
1846
2141
375
200
1070
70
200
165
–
Oil volume (Litres)
Total weight (Kg)
122
446
156
560
195
745
263
1018
335
1306
403
1776
475
2125
514
2455
559
2763
865
3743
1026
4221
1248
5422
Rated Power [kVA]
A (Length)
B (Width)
C (Height to cover)
D1 (Height to HV with porcelain bushings)
D3 (Heigth to HV with plug-in-bushings)
D2 (Height to LV with Flags)
F (Distance betwen HV bushings)
H (Distance betwen centre LV bushings)
J (Wheel axis distance)
K (Wheels width)
Ø (Wheels)
L (Wheel)
Distance between pole mounting brackets
50
990
663
740
1193
875
900
375
80
520
40
125
110
530
100
1000
763
791
1244
926
951
375
80
520
40
125
110
530
160
1076
743
873
1326
1008
1033
375
80
520
40
125
110
530
250
1276
876
932
1370
1067
1166
375
150
670
40
125
110
–
400
1426
876
1032
1470
1167
1266
375
150
670
40
125
110
–
630
1526
936
1133
1571
1268
1394
375
150
670
40
125
110
–
800
1706
1046
1163
1601
1298
1496
375
150
670
40
125
110
–
1000
1776
1106
1203
1641
1338
1536
375
150
670
40
125
110
–
1250
2016
1236
1227
1665
1362
1560
375
150
820
70
200
165
–
1600
1906
1216
1661
2099
1796
2031
375
200
820
70
200
165
–
2000
2036
1286
1791
2229
1926
2161
375
200
820
70
200
165
–
2500**
2236
1416
1831
2269
1966
2261
375
200
1070
70
200
165
–
Oil volume (Litres)
Total weight (Kg)
167
544
167
544
225
730
299
1051
382
1336
442
1782
589
2172
601
2507
788
2914
984
3781
1189
4610
1411
5415
Aluminum Windings
Other dimensions on request.
(*) dimensions could be affected depending on the chosen vector group.
(**) Please contact Ormazabal for technical values above 2500 kVA.
33
transfoorma
Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
Conventional
Transformers designed according to the requirements of the IEC standard suitable for worldwide markets out of the
European Union.
Characteristics 36 kV: A036 AK36
MV Porcelain Bushings
MV Plug-In Bushings
250 - 2500 kVA
Lifting
Eyes
MV Bushings
F
F
LV Bushings
MV Bushings
J
K
J
Draining and
Sampling Device
H H H
Filling
Device
Thermometer
Pocket
Filling
Device
J
J
Draining and
Sampling
Device
H H H
B
MV
Regulation
Tap Changer
A
A
MV Porcelain Bushings
Up to 160 kVA
F
Lifting
Eyes
F
MV Bushings
Surge arresters support (Op)
LV Bushings
D1
80
C
D2
140
Latching
eyes
Filling
Device
L
H
H
H
Draining and
Sampling
Device
Thermometer Pocket
(optional)
B
MV Regulation
Tap Changer
A
34
K
J
L
Earth
connection
M12
Wheel Frames
(skids)
J
L
Earth
connection
M12
K
B
MV
Regulation
Tap
Changer
Wheel
Frames
(skids)
M
Earth
connection
M12
M
Wheel
Frames
(skids)
L
C
C
D3
D1
LV Bushings
D2
F
D2
Lifting
Eyes
F
Thermometer Pocket
transfoorma
Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
Conventional
Characteristics 36 kV: A036 AK36
Electrical characteristics
36 kV A036 AK36
50
Rated Power [kVA]
Rated Voltage (Ur)
100
160
250
400
630
Vector Group
No-Load Losses - P0 [W]
Load Losses - Pk [W]
Short-Circuit Impedance (%) at 75°C
Sound Power Level LwA [dB]
Voltage drop at full load (%)
load
100%
load
75%
Efficiency (%)
List A036
List Ak36
List A036
cosƒ=1
cosƒ=0.8
cosƒ=1
cosƒ=0.8
cosƒ=1
cosƒ=0.8
800
1000
1250
1600
2000
2500**
Dyn11
1300
1450
7000
8900
6
6
66
67
1.05
1.07
4.35
4.36
99.02
98.98
98.78
98.72
99.20
99.15
99.00
98.94
1750
11500
6
68
1.10
4.38
98.95
98.69
99.13
98.92
2200
14500
6
69
1.08
4.37
98.97
98.71
99.14
98.93
2700
18000
6
71
1.08
4.37
98.98
98.72
99.15
98.94
3200
22500
6
73
1.08
4.37
98.98
98.73
99.16
98.95
<30
420
Primary [kV]
No-load Secondary [V]
Yzn11/Dyn11*
160
270
1050
1650
4.5
4.5
50
54
2.18
1.74
4.09
3.86
97.64
98.12
97.06
97.66
98.04
98.43
97.56
98.04
390
2150
4.5
57
1.44
3.69
98.44
98.05
98.68
98.36
550
3000
4.5
60
1.29
3.60
98.60
98.26
98.82
98.53
790
4150
4.5
63
1.13
3.50
98.78
98.48
98.97
98.71
Dimensions [mm]
1100
5500
4.5
65
0.97
3.39
98.96
98.71
99.12
98.90
36 kV A036 AK36
Copper Windings
Rated Power [kVA]
A (Length)
B (Width)
C (Height to cover)
D1 (Height to HV with porcelain bushings)
D3 (Heigth to HV with plug-in-bushings)
D2 (Height to LV with Flags)
F (Distance betwen HV bushings)
H (Distance betwen centre LV bushings)
J (Wheel axis distance)
K (Wheels width)
Ø (Wheels)
L (Wheel)
Distance between pole mounting brackets
50
1040
633
761
1214
896
921
375
80
520
40
125
110
530
100
940
733
719
1172
854
879
375
80
520
40
125
110
530
160
1126
738
801
1254
936
961
375
80
520
40
125
110
530
250
1226
866
901
1339
1036
1135
375
150
670
40
125
110
–
400
1436
896
901
1339
1036
1135
375
150
670
40
125
110
–
630
1516
946
1052
1490
1187
1313
375
150
670
40
125
110
–
800
1866
1136
1052
1490
1187
1333
375
150
670
40
125
110
–
1000
1866
1186
1112
1550
1247
1445
375
150
670
40
125
110
–
1250
1836
1126
1272
1710
1407
1605
375
150
820
70
200
165
–
1600
1816
1196
1657
2095
1792
2027
375
200
820
70
200
165
–
2000
2026
1226
1657
2095
1792
2027
375
200
820
70
200
165
–
2500**
2116
1266
1767
2205
1902
2197
375
200
1070
70
200
165
–
Oil volume (Litres)
Total weight (Kg)
180
521
151
572
210
779
235
1040
319
1419
450
1976
540
2.422
550
2612
634
3055
1015
4340
1025
4570
1289
5526
Rated Power [kVA]
A (Length)
B (Width)
C (Height to cover)
D1 (Height to HV with porcelain bushings)
D3 (Heigth to HV with plug-in-bushings)
D2 (Height to LV with Flags)
F (Distance betwen HV bushings)
H (Distance betwen centre LV bushings)
J (Wheel axis distance)
K (Wheels width)
Ø (Wheels)
L (Wheel)
Distance between pole mounting brackets
50
980
653
740
1193
875
900
275
80
520
40
125
110
530
100
980
758
767
1220
902
927
275
80
520
40
125
110
530
160
1040
768
893
1346
1028
1053
275
80
520
40
125
110
530
250
1296
896
1001
1439
1136
1235
275
150
670
40
125
110
–
400
1326
946
1091
1529
1226
1325
275
150
670
40
125
110
–
630
1396
1046
1142
1580
1277
1403
275
150
670
40
125
110
–
800
1766
1076
1224
1662
1359
1557
275
150
670
40
125
110
–
1000
1886
1166
1173
1611
1308
1506
275
150
670
40
125
110
–
1250
1976
1196
1301
1739
1436
1634
275
150
820
70
200
165
–
1600
1946
1176
1701
2139
1836
2071
275
200
820
70
200
165
–
2000
2096
1256
1781
2219
1916
2151
275
200
820
70
200
165
–
2500**
2276
1366
1821
2259
1956
2251
275
200
1070
70
200
165
–
Oil volume (Litres)
Total weight (Kg)
150
552
183
633
233
762
331
1132
396
1440
472
1932
623
2338
590
2594
831
3239
1033
3986
1208
4668
1492
5933
Aluminum Windings
Other dimensions on request.
(*) dimensions could be affected depending on the chosen vector group.
(**) Please contact Ormazabal for technical values above 2500 kVA.
35
transfoorma
Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
Non-conventional
transforma.fine
transforma.tpc
Extended range solutions
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.
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.
OLTC (On load tap changer)
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.
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.
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
36
transfoorma
Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
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
High voltage shore connection
systems (HVSC)
Auxiliary services in nuclear
power plants
Transformers with a very balanced
voltage (voltage variations <3%) for
complete power solutions to supply
energy to ships in harbours (HV shore
connection systems).
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.
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
IEC60076
Standards
Technical features
IEC60076
Up to 5000 kVA and 36 kV
ISO80005
Technical features
Up to 10 000 kVA and 52 kV
Extended features
●● Technical values
●● >36 kV
●● > 5000 kVA
●● Direct connection to Ormazabal
cubicles
●● Design for ultra-compact
Ormazabal substations
●● High temperature transformers
37
transfoorma
Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
Handling, installation and after sales
Handling
Indoor
Conventional transformers have
fourbracing eyes located on the corners
for transportation and so prevent
damage to the cooling elements.
Inside mobile / prefabricated
transformer substations
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.
●● 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…
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
●● 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
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.
38
≥846 mm
Inside buildings
The transformer site mustbe designed
according to the local regulations and
allow for adequate cooling.
transfoorma
Dielectric liquid immersed transformers
Transformers for Distribution
Network Solutions
Outdoor
Substations
Commissioning and
after sales
Recycling and
end‑of‑life
transforma in outdoor facilities.
Services
As a part of its after sales services,
Ormazabal provides electrical utilities
and electrical end users recycling
services for its transformers.
Technical
assistance
FAT
Pick-up &
delivery
Supervision &
installation
Commissioning
Training
Warranty
Inspection &
maintenance
Spare part
Repair
Retrofitting
Recycling
On-pole
Rural distribution transformers for
on-pole installation: transforma
conventional or tpc.
Engineering
Procurement
EPCM
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.
39
transfoorma
Dielectric liquid immersed transformers
Notes
40
Transformers for Distribution
Network Solutions
Transformers for Distribution
Network Solutions
transfoorma
Dielectric liquid immersed transformers
Notes
41
www.ormazabal.com
CA-109-EN-1508