1. Dry type transformers Zaragoza Our product
© ABB Group 2009
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2. Index - What is a dry transformer? Vacuum cast range
ABB general applications
Zaragoza’s competitive edges
Types and standards
Cast coil transformers for special applications
Vacuum cast coil strong points
A revolutionary concept
Main advantages
The most economical
The product basic range
Vacuum cast range
Standard technical features
Short facts about the vacuum cast coil technology
Environmental, climatic & fire classes
Vibration proof
Environmental classes E2 & one step forward: E2+
Features switching off endurance test
Standard accessories
Temperature control devices and sensors
Special accessories
Furthermore, any option is available
See our advantages
© ABB Group 2009
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3. Our product What is a dry transformer?
ABB manufactures a transformer which does not use any kind of liquid for cooling, it has windings encapsulated under Vacuum, in epoxy resin reinforced with glass net.
It is the most technologically advanced design for extreme conditions.
ABB has flexibility to produce transformers for optimum space utilization, and special requirements.
These transformers meet strict parameters with respect to electrical system demands, are virtually maintenance free and are manufactured in accordance with industry and international standards including, IEC , ISO 9001 and ISO
© ABB Group 2009
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4. Our product ABB general applications
Marine Application
Hydro automation & electrical systems
HVDC light / Windpark Connection
Utility communication
Network Management
Compact Substations (CSS)
Plant Automation & Electrical Systems
Automation of Gas and Water Plants & Networks
Gas-insulated Switchgear (GIS)
Industrial Electrification
MV Switchgear (GIS / AIS)
AIS Substations
GIS Substations
Railway Power Supply (162/3 Hz)
Urban Electrification
Transformers
Rural Electrification
© ABB Group 2009
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5. Zaragoza’s competitive edges
Our product
Zaragoza’s competitive edges
Most advanced production technologies to guarantee the best product quality.
The most demanding quality control system to guarantee the total reliability of the product.
Probably the largest production center for dry type transformers in Europe.
The deepest experience in the design to guarantee the best technical solutions in all applications.
Present all over the world to guarantee the best after sales service.
ISO 9001, ISO and UNE-EN ISO/IEC certifications.
© ABB Group 2009
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6. Our product Types and designs
Standard three phase transformer.
Double High Voltage transformer.
Multi winding transformer.
Low Voltage transformer.
Autotransformer.
Drive systems transformers.
Excitation systems transformers.
Standard designs:
High Voltage winding material: foil disks.
Low Voltage winding material: aluminum/copper foils.
Insulation class: F, H.
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7. Our product Where we have experience
Distribution applications.
Traction systems.
Rectifier system.
Marine applications (Propulsion & Distribution).
Wind power applications.
Cement industry.
Steel plants.
Oil & gas.
Chemical & pharmaceutical.
Metal & mining.
Pulp & paper.
Power plants & utilities.
Airports.
High rise buildings.
© ABB Group 2009
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8. Our product Vacuum cast coil strong points
Vacuum cast coil transformers are according to International standards.
Stronger resistance against short-circuit stress.
Superior behaviour on load changes (thermal).
Linear distribution of BIL.
Highest possible security against cracks on coils.
No silicone during coil manufacturing.
Better performance under dynamic loads (mechanic).
Better performance under severe ambiental conditions (exceeding E2).
More suitability for extreme environmental conditions.
© ABB Group 2009
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9. Our product A revolutionary concept
V alued points (ABB product)
A ll accesories available
C ertifications proving our quality
U nder vacuum benefits (Very low partial discharges)
U ndercut (New materials)
M aintenance free
C apable of withstanding all conditions (C2,E2+)
A ttractive appearance
S afety
T ailored solutions
C ontinuos improvements (> 52 kV level insulation)
O vervoltage transient design (> 20,000 on/off)
I mpulse lightening for high tensions (250 kV BIL)
L onger life (Class H)
© ABB Group 2009
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10. Our product Main advantages: safe and environmental friendly
Reduced environmental contamination.
Zero risk of leakage of flammable or contaminating substances.
Environmental safe in production.
Well suited to damp and contaminated areas.
No fire hazard.
Transformers are non flammable and self-extinguishing.
High resistance to short circuits.
High capacity to support overloads.
High performance in dealing with seismic phenomenon.
Capable of withstanding the most severe of rolling and vibrating conditions.
© ABB Group 2009
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11. Our product Main advantages: Zaragoza´s product competitive edges
The lowest partial discharge value thanks to the most advanced casting technology.
The typical partial discharges is below 5pC (maximum allowed 10pC).
Epoxy resin cast under vacuum avoids entry of moisture and protects against aggressive environments.
Unique coil finishing provides smooth surface eliminating dust accumulation.
Self-extinguishing in the event of fire or arcing and no gases released with potential danger.
Step lap core configuration granting lower values of no load losses, no load current and noise level.
© ABB Group 2009
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12. Our product Dry transformers versus oil transformers
The best alternative due to:
Suitable to operate in humid or heavily polluted environments (E2).
Suitable for operation, transport and storage at ambient temperatures down to minus 25 ºC (C2).
Restricted flammability, self fire extinction (F1).
Emission of toxic substances and opacity of fumes is minimized (F1).
Partial discharges bellow 5 pC in average.
Withstand the same impulse test even for exposed situation.
Have more ability to withstand thermal and dynamic short circuit effects.
Mechanically stronger, safer against vibrations, earthquakes, etc..
No liquid, neither leaks and no risk of polluting spills.
Fire hazard
Safety for people and property
Respect for natural life
© ABB Group 2009
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13. Our product Dry transformers versus oil transformers
Suitable to operate in humid or heavily polluted environments (E2).
Suitable for operation, transport and storage at ambient temperatures down to minus 25 ºC (C2).
Restricted flammability, self fire extinction (F1).
Emission of toxic substances and opacity of fumes is minimized (F1).
Partial discharges bellow 5pC in average.
Withstand the same impulse test even for exposed situation.
Have more ability to withstand thermal and dynamic short circuit effects.
Mechanically stronger, safer against vibrations, earthquakes, etc..
No liquid, neither leaks and no risk of polluting spills.
© ABB Group 2009
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14. Our product The most economical
Less space needed.
Less civil work needed.
No special safety features required (fire detection)
Maintenance free.
Longer transformer life due to low thermal and dialectic ageing.
Can be installed closer to the point of consumption reducing load cable losses.
Optimal design subject to constant improvements in design as new materials become available.
Produced in high throughput, specialised and efficient ABB factories.
© ABB Group 2009
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15. Our product The product basic range
From 250 kVA up to 40 MVA.
High voltage: up to 72.5 kV.
Low voltage: up to 36 kV.
Classes: E2, C2, F1.
Partial discharges: <10 pC.
Ambient design: From -25 ºC up to 60 ºC.
Insulation: 155ºC (F), 180 ºC (class H).
Cooling: AN, ANAF (up to +40%), AFWF.
Enclosure protection degree: From IP00 up to IP54.
© ABB Group 2009
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16. Our product Vacuum cast range
Small cast coil
Dry SPT
hi-T Plus
© ABB Group 2009
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17. Our product Standard technical features – Small cast coil
Standards IEC EN , CENELEC HD 464, DIN 42563
Rated power up to 3,15 MVA
Rated voltage up to 36kV
Cooling AN
Protection degree IP00
High voltage winding Encapsulated, Aluminium foil
Low voltage winding Prepreg layer between turns, Aluminium full width
Temperature rise K
Insulation system temperature ºC (Class F)
Partial discharges < 10 pC
© ABB Group 2009
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18. Our product Standard technical features – Dry SPT
Standards IEC EN , CENELEC HD 464, DIN 42563
Rated power up to 40 MVA
Rated voltage up to 72.5 kV
Cooling AN
Protection degree IP00
High voltage winding Encapsulated, Aluminium
Low voltage winding Encapsulated, Aluminium
Temperature rise K
Insulation system temperature ºC (Class F)
Partial discharges < 10 pC
© ABB Group 2009
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19. Our product hi-T Plus Standard technical features
Standards IEC EN , CENELEC HD 464, DIN 42563
Rated power up to 3.15 MVA
Rated voltage up to 24kV
Cooling AN
Protection degree IP00
High voltage winding Aluminium
Low voltage winding Prepreg layer between turns, Aluminium full width Aluminium
Temperature rise K
Insulation system temperature ºC (Class H)
Partial discharges < 10 pC
© ABB Group 2009
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20. Our product Short facts about the vacuum cast coil technology
100% turns
0% turns
90%
Low Voltage winding
© ABB Group 2009
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21. Our product Environmental, climatic and fire classes
E Normal indoor installation, no condensation, no considerable pollution.
E Limited pollution, occasional condensation eg off circuit periods.
E2  Heavy pollution, frequent condensation.
Climate
C Lower ambient temperatures:
Operation -5 °C
Storage and transport -25 °C
C2  Lower ambient temperatures:
Operation -25 ºC/-25 ºC
Storage and transport
© ABB Group 2009
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22. Our product Environmental, climatic & fire classes
F0 No special requirements except typical characteristics for dry type transformers.
F1  Increase demands.
All material practically free of halogens
Limited formation of fumes
Limited contribution with calorific energy to the source of fire
Self extinguishing transformer fire
© ABB Group 2009
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23. Our product Environmental, climatic & fire classes
Transformer inside the humidity chamber with saline fog, before environmental test performance.
Zaragoza’s vacuum cast coil dry type transformers were certified for several tests by KEMA high voltage laboratory.
Tests such as:
Dielectric routine rests.
Thermal shock tests for class C transformers.
Lightning impulse tests.
Environmental tests with additional specifications for class E2 (E2++) transformers.
All these tests were according to IEC Standard plus additional requests.
© ABB Group 2009
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24. Our product Vibration proof
The vibration to which the transformer is exposed to during its lifetime, was summarized in an acceleration spectrum with the simulation of its life cycle loads.
Multi-axis vibration tests, and shock tests were performed as per IEC /59, German edition EN parts 2-6 and 2-59 as well as particular customer’s requirements.
Extreme accelerations due to handling or harsh vibration were also considered in these tests.
© ABB Group 2009
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25. Our product Environmental classes E2 & one step forward: E2+
E2 test is necessary when the transformer is going to be placed where frequent condensation or/and heavy pollution.
Condensation test:
6 or more hours in the test chamber (condensation & humidity above 93%).
After 6 hours, the transformer is tested with induced voltage during 15 minutes at 1.1 times the rated power.
Humidity penetration test:
144 hours inside the climatic chamber with air temperature at 50  3 ºC & relative humidity at (90  5)%.
After 3 hours in ambient conditions the transformer shall be subjected to routine insulation test at 80% of standard values.
During any voltage application will not be approved neither breakdown nor flashover or any serious tracking.
© ABB Group 2009
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26. Our product Environmental classes E2 & one step forward: E2+
Scope of supply: 3140 kVA, Primary: V
Secundary: V
Dyn5
Sn: 87074
E2+ (Plus): In condensation test, water conductivity is kept at 1,5 S/m, and dielectric tests are carried out as for neutral isolated system.
Step one: After 6 hours in condensation chamber, with water conductivity 1,5 S/m passed dielectric tests at 1.1 rated voltage, between line terminals and ground.
Step two: After 144 hours in climatic chamber passed routine dielectric tests at 80% of standard test values.
Qualified to perform in the most severe environmental conditions
© ABB Group 2009
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27. Our product Features switching off endurance test
After switching off operations at full nap load voltage, the transformer does not show any increase of partial discharges, neither along the winding to the ground, partial discharges remained constant along the test what means that the transformer has not suffered any significant loss of life.
Our transformers are in good conditions very similar to a new one, and can be put in operation in a network which has the same conditions and capacity between the switchgear and transformer in a test circuit.
© ABB Group 2009
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28. Our product Standard accessories
Terminal stip
Temperature sensors
Earthing Terminals
Pulling eyes
Wheels
Fans (option)
Tappings / Off load tap changer
Lifting lugs
Rating Plate 1 2 3 4 5 6 7 8 9 9 1 8 2 7 6 3 4 5
© ABB Group 2009
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29. Our product Temperature control device and sensors
TMD-T4 and TMD-T4S
T- 154
NT- 935
T- 119
Pt100
PTC ºC
© ABB Group 2009
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30. Anti vibrations devices
Our product Special accessories
Enclosures
Hydrocoolers
Anti vibrations devices
On load tap changer (OLTC)
Earthing switch
Surge arrester for HV and LV
Plug in bushings
Earthing bullet
© ABB Group 2009
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31. Our product Special accessories
Fans for forced
air cooling
Space heaters
Current transformers
Electrostatic screen
© ABB Group 2009
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32. Our product Furthermore, any option is available
Conductor material: aluminium / copper.
Low Voltage terminals located at the bottom of transformer.
Impregnated high voltage winding.
Encapsulated Low Voltage.
Delta connection encapsulated.
Plug-in connector.
Dual primary / secondary.
6/12/24 pulse rectifying transformer.
Bus bar flanges can be accommodated.
© ABB Group 2009
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33. Our product Main advantages
Possibility to install any kind of accesories
Step-lap configurate
Aluminium foil disk in High Voltage winding
Lowest partial discharge (>5 pC) due to epoxy resin casted under vacuum (horizontal process)
High impulse withstand through foil-disk winding
Unique coil finishing: Smooth surface that eliminates dust acumulation
Dust / pollution resistance thanks to the sealed technology
High capacity to withstand overloads due to high thermal innertia
Self- extinguish
Axial short-circuit forces retained & hight short circuit withstand
Bidirectional wheels
Radial short circuit forces retained
© ABB Group 2009
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34. © ABB Group 2009
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