© abb group 2009 | slide 1 dry type transformers zaragoza our product

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© ABB Group 2009 | Slide 1 Dry type transformers Zaragoza Our product

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© ABB Group 2009 | Slide 1

Dry type transformers ZaragozaOur product

© ABB Group 2009 | Slide 2

Index -

What is a dry transformer?

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 | Slide 3

Our productWhat 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 60076-11, ISO 9001 and ISO 14001.

© ABB Group 2009 | Slide 4

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

Our productABB general applications

HVDC light / Windpark Connection Plant Automation & Electrical Systems

Hydro automation & electrical systems

Compact Substations (CSS)Network

Management

Marine ApplicationUtility

communication

© ABB Group 2009 | Slide 5

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 14001 and UNE-EN ISO/IEC 17025 certifications.

Our productZaragoza’s competitive edges

© ABB Group 2009 | Slide 6

Our productTypes and designs

Types:

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.

© ABB Group 2009 | Slide 7

Our productWhere 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 | Slide 8

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.

Vacuum cast coil transformers are according to International standards.

Our productVacuum cast coil strong points

© ABB Group 2009 | Slide 9

Our productA 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 | Slide 10

Our productMain 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 | Slide 11

Our productMain 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 | Slide 12

Our productDry 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 | Slide 13

Our productDry 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 | Slide 14

Our productThe 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 | Slide 15

Our productThe 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 | Slide 16

Our productVacuum cast range

hi-T PlusSmall cast coil Dry SPT

© ABB Group 2009 | Slide 17

Standards IEC EN 60076-11, 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 100K

Insulation system temperature 155 ºC (Class F)

Partial discharges < 10 pC

Our productStandard technical features – Small cast coil

© ABB Group 2009 | Slide 18

Standards IEC EN 60076-11, 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 100K

Insulation system temperature 155 ºC (Class F)

Partial discharges < 10 pC

Our productStandard technical features – Dry SPT

© ABB Group 2009 | Slide 19

Standards IEC EN 60076-11, 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 100K

Insulation system temperature 180 ºC (Class H)

Partial discharges < 10 pC

Our producthi-T Plus Standard technical features

© ABB Group 2009 | Slide 20

100% turns

90%

Low Voltage winding

0% turns

Our productShort facts about the vacuum cast coil technology

© ABB Group 2009 | Slide 21

Our productEnvironmental, climatic and fire classes

Environment

E0 Normal indoor installation, no condensation, no considerable pollution.

E1 Limited pollution, occasional condensation eg off circuit periods.

E2 Heavy pollution, frequent condensation.

Climate

C1 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 | Slide 22

Our productEnvironmental, climatic & fire classes

Fire

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 | Slide 23

Our productEnvironmental, 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 C2 transformers.

Lightning impulse tests.

Environmental tests with additional specifications for class E2 (E2++) transformers.

All these tests were according to IEC 60076-11 Standard plus additional requests.

© ABB Group 2009 | Slide 24

Our productVibration 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 68-2-6/59, German edition EN 60068 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 | Slide 25

Our productEnvironmental 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 | Slide 26

Our productEnvironmental classes E2 & one step forward: E2+

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

Scope of supply:3140 kVA, Primary: 33000 V

Secundary: 1000-400 V

Dyn5

Sn: 87074

© ABB Group 2009 | Slide 27

Our productFeatures switching off endurance test

After 20.000 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 | Slide 28

Our productStandard accessories

1

2

3 4 5

6

7

8

9 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

© ABB Group 2009 | Slide 29

Our productTemperature control device and sensors

TMD-T4 and TMD-T4S T- 154 NT- 935 T- 119

Pt100 PTC 130-150 ºC

© ABB Group 2009 | Slide 30

Our productSpecial accessories

Anti vibrations devices

Enclosures

On load tap changer (OLTC)

Hydrocoolers

Earthing switch Surge arrester for HV and LV Plug in bushings Earthing bullet

© ABB Group 2009 | Slide 31

Our productSpecial accessories

Fans for forced air coolingSpace heaters Current transformers

Electrostatic screen

© ABB Group 2009 | Slide 32

Our productFurthermore, 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 | Slide 33

Our productMain advantages

Possibility to install any kind of accesories

Lowest partial discharge (>5 pC) due to epoxy resin casted under vacuum(horizontal process)

Dust / pollution resistance thanks to the sealed technology

Self- extinguish

Bidirectional wheels

Unique coil finishing: Smooth surface that eliminates dust acumulation

Step-lap configurate

Axial short-circuit forces retained & hight short circuit withstand

Aluminium foil disk in High Voltage winding

High impulse withstand through foil-disk winding

High capacity to withstand overloads due to high thermal innertia

Radial short circuit forces retained

© ABB Group 2009 | Slide 34