Transforming high standards into leading solutions - My …alcontra.net/v2/wp-content/uploads/2014/04/TRANSTECH-CATALOG.pdf · Transforming high standards into leading solutions

2 Under the Technical license of Siemens AG, Germany

Transforming high standards into leading solutionsSharing Siemens knowledge & experience of more than 100 years

TRANSTECH Transformers LLC is a state of the art of modern manufacturing facility in Abu Dhabi. We are specialized in the design and manufacturing of high quality oil immersed & Dry type distribution Transformers and Package Substations. Our services arm is capable of your service needs in all areas of transformers installations testing, commissioning, operation and maintenance.

Manufacturing locationICAD II Mussafah, Abu DhabiUnited Arab Emirates

CapitalAED. 30,000,000

Annual production capacity5000MVA

Product RangeRating: 50kVA to 6300kVAVoltage Class: 36kV

TECHNOLOGY & LICENSETranstech Transformers LLC is the licensee of Siemens AG know-how and technology to manufac-ture oil immersed and cast resin transformers upto 36kV class. Sie-mens experts provide support to Transtech to ensure technology & processes are maintained accord-ing to Siemens quality standards.

In TRANSTECH, we believe in our people because our people deter-mine our success. Each employee participates in continuous training sessions to enhance his or her skills and knowledge base. The result is a knowledgeable, capable, and com-mitted team of professionals with a common goal of providing complete customer satisfaction.

On the last transformation step from the power station to the consumer, distribution transformers provide the

necessary power for systems and buildings. Accordingly, their opera-tion must be reliable, efficient and, at the same time, silent.

ü Distribution Transformersü Cast Resin Transformersü Package Substationü Special Transformers like

converter Transformer, Arc furnace Transformers, Earth-

ing Transformers, Auto Transform-ers, Motor Starting Transformers

ü Services

Our Quality = Your Security

Intro

duct

ion

Product Portfolio

3Under the Technical license of Siemens AG, Germany

GENERAL

Oil immersed transformers (OIT) are suitable for installation both indoor & outdoor and designed for sustain operation at an ambient temperature of upto 55°C. We design transformers in accordance to IEC 60076, however they can be designed to meet national regulation or customer specific needs.

Transformer DesignHermetically sealed type or conservator type for nominal rating from 50kVA to 6300kVA. Hermetic design transformers are suitable for location like sub floor substation or compact substations.

MAGNETIC CORE

The magnetic core of the transformers is manufactured from a high grade, cold rolled grain oriented silicon steel. The stacking of the laminations is multi step lap type. The magnetic core is elliptical cross section and slitting and cutting of the core is done

by automatic Georg machine. The magnetic core and its framework are carefully sized to minimize the magnetostriction effects which constitute the main sources of sound in distribution transformers. Based on the specification or requirement the quality of the magnetic steel are carefully chosen to reduce the no load losses and / or the no load current of the transformer.

WINDINGS

LOW VOLTAGE WINDINGS

The low voltage winding material is copper foil. Cooling ducts are added to control the temperature gradient. The low voltage winding is built around the magnetic core, and an insulating barrier is wound around the low voltage coil in order to provide an electrical separation between the LV and HV coil

HIGH VOLTAGE WINDINGSThe high voltage winding material is copper. The shape of the conductor is either round or rectangular. To obtain a controlled temperature gradient, cooling ducts are added in the coil. High voltage coils are multilayer helical. The winding are elliptical shape which helps reduce the overall length of the transformer.

TAPPINGS

Tap changers allow voltage adjustment for a variation of the supply network voltages on the primary side of the transformer or for increasing and decreasing the secondary voltage. Tappings are provided on the primary winding and connected to an Off-circuit tap changer. The operating handle of the hand-operated offcircuit tap changer is mounted on top cover or tank side wall. The standard tapping range is ±2x2.5%.Tapping range can also be provided as per customer requirement. The transformer needs to be deenergized to operate the off circuit tap changer.

TANK CONSTRUCTION

The corrugated tank is the most common type used for distribution transformers. For hermetically sealed transformers, the cooling fins are designed to compensate for excessive overpressure and to limit the effects of liquid dilation. The corrugated panels are welded onto the tank

Oil Type Transform

er

Three Phase Oil Immersed Transformer


sides. Cooling radiators can also be provided on request. The under base is generally skid type and bidirectional rollers are provided on request. Tank cover is generally bolted, welded cover can also be provided on request. Oil leakage test is conducted on every transformers to ensure oil tightness after assembly.

TERMINATION

The HV termination is generally

porcelain bushing, plug-in bushing can be provided on request. Air insulated or fully insulated cable box can be provided on request with min Ingress protection IP54.Cast resin bushing is used for LV termiantion, porcelain bushing can be provided on request. AdditionalNeutral Bushing can be provided separately on request for installing protection current transformers. Air or fully insulated cable box or bus duct can be provided on request.

INSULATING LIQUIDThe insulating liquid used is mineral oil according to IEC 60296 - inhibited /Uninhibited based on customer request. We offer also synthetic ester oil or Silicon oil based on application or customer requirement.

SURFACE PROTECTIONOne of our major quality commitments

is to provide high-quality surface protection. The coating (painting)type C3/C4/C5 is chosen in accordance with the environmental conditions, considering the degree of pollution, humidity, etc as per ISO 2944. Zinc Spray / Hot dip galvanized tank or epoxy base painting.

Tolerance According to IEC 60076Total Losses ± 10% of the losses

No load and load loss ±15% of no-load and load losses

Rates Voltage Ratio (principal tapping)

± 0.5% of rated value or of measured ± rated impedance voltage in % the smaller of the two values applies

Voltage Ratio for other tappings ± 0.5 % of ratio stated in the order

Rated impedance voltage (principal tapping) ± 10% of rated value (when the impedance value <10%)

No-load current (mean value of the three terminal currents) ± 30% of rated value

A-sound power level without tolerance


Oil Immersed Distribution Transformers

Hermetically sealed with or without gas cushion Breathing type with or without conservator

Tank ConstructionCorrugated fin wall tankPlain wall tank with radiatorBolted or welded cover

Material Copper / Copper, Aluminum / Aluminum (on request)Manufacturing Standards IEC 60076Rated power Up to 6.3MVA Voltage Class Upto 36kVInsulation level Upto 200kV BILPhases 3-phaseTappings ±2 x 2.5 % (or different range on request)Voltage regulations With off-circuit tap changerOverLoading As per IEC Short circuit impedance As per IEC 60076 or on requestRated frequency 50 Hz or 60HzVector groups Dyn11 (any vector group according to IEC Standards)Material thermal class insulation According to IEC 60085 class ATemperature rise As per IEC 60076 or on requestType of cooling ONAN or other type of cooling like ONAF, KNANDielectric liquid Mineral oil according to IEC Standard, on request silicon oil , synthetic ester

Short circuit withstand ability The transformers are designed to withstand the thermal and the dynamic effects resulting from a secondary short-circuit in accordance with IEC 60076-5.

Sound Level IEC 60076-10 or NEMA - TR1 or on requestInstallations Indoor and/or outdoor

HV & LV terminals

HV terminals: plug-in or porcelain bushings with or without cable box (canopy on request).LV terminals: cast resin, bar type or porcelain bushings with or without cable box (canopy on request).Cable box if required can be Air insulated or fully insulated as per BS EN 503366 (IP55 class or on request)

Accessories

Standard Fitting: � Rating and Diagram Plate, Lifting lugs, � earthing terminal, � off circuit tap changer, HV & LV Bushings, � Haulage Lug, � Lashing Lug, � valves,� Oil level Indicator, Skid type underbase,� Thermometer Pocket

Optional Fittings: Oil Temperature Indicator, Winding Temperature Indicator, Pressure Relief Device, DGPT, Marshalling box / Terminal Box, Bi Directional Roller, Jacking Pad, CT. Pressure Vaccum Gauge, Differential pressure switch

Fitting (with Conservator): � Buchholz Relay, � Dehydrating Breather, Magnetic Oil level guage,

Special accessories on request

Product Specifications (typical)

Hermetically Sealed Distribution Transformers Conservator Type Distribution Transformers


Transtech, manufacture Cast Resin Transformers based on Siemens GEAFOL® technology.

GEAFOL cast-resin transformers are the ideal solution where distribution transformers has to assure the utmost safety. With GEAFOL, the limitations of liquid-filled transformers are avoided, but the proven characteristics such as operating safety and service life are retained. GEAFOL cast-resin transformers comply with IEC 60076-11.

There are good reasons why GEAFOL cast-resin transformers are used wherever absolute safety is required. They can be found in high-rise buildings, hospitals, wind turbines, road and underground railway shafts, offshore installations, mines and many other similar safety critical environments.

The GEAFOL principle has succeeded in producing transformers with excellent electrical, mechanical and thermal characteristics, which have also proved to be particularly compatible with the environment. Maintenance-free– environmentally friendly –rugged: The insulation GEAFOL transformers are insulated with an epoxy resin/quartz powder mixture. This is an environment tallyacceptable material that makes the windings maintenance free, moisture-resistant, tropicalized, flame-retardant and self-extinguishing. Even when the insulation is exposed to arcing, no toxic gases are generated. The windings are clamped between resilient spacers that provide effective vibration insulation both from the iron core and mutually between windings. The result: GEAFOL transformers are as quiet as oil- immersed types.Electrically safe: The aluminum foil windingThe coils of the high-voltage windings are made of aluminum foil. Why foil windings? Because foil windings combine a simple winding technique with a high degree of electrical safety. The insulation is subjected to less electrical stress than in other types of windings. In a conventional roundwire winding, the interturn voltages can add up to twice the interlayer voltage, while in a foil winding it never exceedsthe plain voltage per turn because each layer consists of only one winding turn. The result: High power frequency and impulse voltage withstand capability. Why aluminum? The thermal expansion coefficientsof aluminum and the used cast resin are so similar that

thermal stresses due to load changes are kept to a minimum.No gas inclusions: The epoxy resin casting process.The high voltage windings are potted with epoxy resin under vacuum at a high temperature. This procedure prevents undesirable gas inclusions. The quality of the potting combined with the electrical advantages of the foil winding plays a decisive role in providing freedom from partial discharges (up to twice the rated voltage). The low-voltage strip winding is also of aluminum. The width of the aluminum strip is equal to the length of the coil. This considerably reduces axial short-circuit forces inthe transformer. The conductor strip and the insulation material are bonded together by heating and thus form a compact unit with sufficient strength to withstand radial forces reliably.

Universal: The application areasDry-type transformers must be marked with proven environmental, climate and fire resistance ratings. OurGEAFOL cast-resin transformers are suitable for universal use and satisfy the requirements of the highest defined classes, as proven in comprehensive testing:n Environmental class E2n Climate category C2n Fire resistance class F1

Cast-

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tran

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Cast Resin Distribution TransformerThe Perfect Technology


GEAFOL Transformer technology at a glance:

Three-limb core Made of grain-oriented, low-loss electro- lamina-

tions insulated on both sides

LV winding Made of aluminum strip; turns firmly glued together

by means of insulating sheet wrapper material HV winding Consisting of vacuum-potted single foil-type alumi-

num coils; see also page 4

LV connection

HV connection Variable arrangement, for optimal station design

HV tappings on high-voltage connection side; for adjustment to system conditions, reconnect-

able in deenergized state

Coil support system To insulate core and windings from mechanical vibrations, resulting in low noise emissions

Clamping frame and truck Rollers can be turned around for lengthwise or side-

wise travel

Insulation: Mixture of epoxy resin and quartz powder makes the transformer nearly maintenance-free, moisture-proof, tropicalized, flame- re-sistant and self-extinguishing

Connection tubes

Temperature monitoring by PTC thermistor sensors in the LV winding (on

request PT 100)

Paintfinishonsteelparts Thick-layer coating, RAL 5009, on request: Two-

component varnish or galvanizing (for particularly aggressive environments)

Modular design E.g., windings can be individually mounted and re-

placed on site

Ambient class E2 Climatic category C2 (if the transformer is installed

outdoors, degree of protection IP 23 must be as-sured)

Fire class F1

630 kVA GEAFOL cast-resin transformer, Ur = 20 kV



Distribution Transformers Cast Resin Transformer

Enclosure (Optional) IP 21 protection class, other IP class on request

Winding Material Aluminum / Aluminum

Manufacturing Standards IEC 60076-11

Rated power Up to 4MVA

Voltage Class Upto 36 kV

Insulation level Upto 170kV BIL

Phases 3-phase

Tappings ±2 x 2.5 % (or different range on request) with tap links.

Short circuit impedance As per IEC 60076 or on request

Rated frequency 50 Hz or 60Hz

Vector groups Dyn11 (any vector group according to IEC Standards)

Material thermal class insulation According to IEC 60085 class F

Temperature rise As per IEC 60076 or on request

Type of cooling AN, AF on request

Short circuit withstandability The transformers are designed to withstand the thermal and the dynamic effects resulting from a secondary short-circuit in accordance with IEC 60076-5.

Sound Level IEC 60076-10 or NEMA - TR1 or on request

Installations Indoor

HV & LV terminals

HV terminals: plug-in or resin bushings with or without cable box

LV terminals: cast resin, busbars with or without cable box

Cable box if required can be Air insulated as per BS EN 503366

Accessories Temperature Controller, Rating and Diagram plate, Lifting lug, Earthing terminal, Bushings, skid underbase, rollers on request

Miscellenous To avoid oxidation core is lacque coated


Package Substations are self-contained units available in different designs and dimensions. Power supply requirements for residential and industrial consumers.

Each unit comprises of three individual main assemblies, and a typical substation would include:

1. One hermetically sealed transformer.2. One SF6 insulated Ring Main Unit.3. One low voltage Feeder Pillar or distribution panel.4. Sheet Steel or GRP Housing

Standard RatingkVA 500 1000 1500

Voltage (kV) 11 11 11

Approximate Weight (kg) 4000 6000 7000

Standard Dimensions(mm) (LxWxH) 3900 x 2250 x 2600 4300 x 2700 x 2600 4300 x 2700 x 2600

Package Substation

Description

Package Substation consist of following:a) Ring Main Unit (RMU) (upto 17kV)b) Oil Type transformer (upto 2000kVA)c) Feeder Pillar (FP) or LV Distribution Board (LVDB)d) Common Basee) Enclosure (Optional on request)

Enclosure (Optional) Sheet Steel, GRP, AluzincApplicable Standard IEC 62271-202, IEC 60076Rated power Up to 2MVAVoltage Class Upto 11kVLayout RMU and FP can be on opposite side or on same side or on requestHV Ring Main Unit Oil Type / SF6 with Fuses / SF6 with circuit BreakerLV Feeder Pillar On request or specificationTransformer Refer the details available in the oil type transformer product specification



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State of the art Production Facility

Core Section GEORG core cutting machine with Automatic Stacking Table (estacker)

Manufacturer Heinrich Georg GMBH

Core Cutting with estackerIt is complete CNC control core cutting machine with automatic estacking table. The benefit of estacker arrangement over conventional core machine: n Conventional operation the step lapping is done

by the operator, which might result in mishandling of the core which is a thin sheet of less than 0.35mm thick resulting waviness on the edges and air gap which can increase no load losses (NLL).

n With estacking arrangement the machine prepare the step lap based on the design criteria fed by the engineering thus eliminating mishandling and ensuring smooth step lap operation.

Core Stacking TableThe benefit of core stacking table are as follows:n Easy to assembly - can fix the pre stacked legs

instead of stacking the sheets layer by layer.n Can be rotated at 360 degrees and inclined at 90

degrees for bottom yoke stacking. n Improve productivity - Assembly process faster

and easier

According to the weight and size of the core, stacking table can be changed on the same base frames


HV/LV windings:The winding technology based on Siemens know-how is elliptical as compared to the rectangular orcircular windings which are most common in distribution transformersThe benefits of elliptical windings over rectangular and circular windings are :n In rectangular windings, the sharp corner bends

causes mechanical and thermal stress concentration points which results in weakening the coil. This also tends to distort the convolutions of wire and causes an increase of stress concentration at the corners of the coil, tending to cut into the wire. This problem is eliminated in the elliptical and circular winding.

n Circular winding construction increases the mean length of the magnetic loop and increase core weight against the elliptical and rectangular winding for the same rating. Reduced size of core in elliptical construction results in reduced transformer dimension and thus smaller foot print.

Winding section:Foil Winding Machine Manufacturer :Tuboly AG

LV foil winding machine suitable for Copper & Aluminum Foil

Wire Winding Machine Manufacturer:Tuboly AG

n HV winding machine with single decoiler

n HV winding machine with double decoiler

n Drying oven PLC Control make: Meier


Low Frequency Heating (LFH) Technology:Solid insulation inside the transformer must be thoroughly dried before oil filling. The insulating material is mostly cellulose, consisting of a long chain of glucose rings. If these is not dried, the insulation performance deteriorates, thus reducing the electrical and mechanical strength of the transformer.

In LFH process, HV & LV windings are uniformly heated from the inside by applying a low frequency current at low voltage levels from the HV side, keeping the LV windings is shorted. At low frequency (0.4 – 2 Hz) and low impedance, the HV and LV windings can heat up to typical drying temperatures of 110 – 120 °C.

The process itself consists of 3 main phases:

n PHASE I – LF-HEATING AND PRE-VACUUM DRYING Evacuation and LF-Heating can start simultaneously.

Target is to achieve the temperature homogenization of all windings during this phase; additional time might be allowed for further homogenization with LF-heating system still activated. Condensation of moisture at non heated parts of the transformers will be prevented by the use of pre-heated / dried air during the process.

n PHASE II – DRYINGLF-Heating is disconnected automatically and the vacuum pressure in the autoclave will be reduced to a level below 2mbar. The temperatures of the windings are maintained within a defined tolerance at the set values during the process. If during a defined time a defined pressure drop

is not exceeded above the values the drying phase is finished and the oil-filling process is started automatically.

n PHASE III – OIL FILLINGOil-filling is started automatically / alternatively by pressing a button after the drying parameters have been reached successfully. The already programmed electro pneumatically powered filling valves are opened for the filling process. During the oil-filling process, a defined vacuum level between 0,5 mbar and 2 mbar will be maintained. The average oil filling speed is controlled by the control system of the oil purification equipment. The oil filling process will stop automatically at every transformer by means of level switches. The vacuum level will be kept constant for about 15 minutes after the oil filling processis finished. Once filling process is completed the aeration valve will open automatically. When reaching atmospheric pressure the bell-shaped vacuum chamber may be opened for unloading.

The benefit of LFH process over conventional heating process:

n The quality of transformer insulation is vastly improved by using LF heating as a drying method compared to the more conventional hot air vacuum system.

n This means processing time is considerably shorter compare to conventional drying techniques.

n LF heating is the state of the art process of drying transformer insulation.

n It is almost twice as efficient when compared with conventional drying systems.

n This system is faster and better than conventional hot oil and vacuum drying methods and its cuts energy costs by half and speeds up the production process.

Principle setup of LFH equipment.1

Vacuum pump gr oup

Vacuum chamber

Power supply

3x400 (50HZ)

LF-conver ters

LF

P

HF

Main control system with control cabinetand computer

Transformers with shorted LV windings

LFHF

P

L L L L L


Testing CapabilitiesFor confirming the specifications and performances of an electrical transformer it has to go through the testing pro-cedures and international standards. Mainly three types of transformer testing are done at manufacturer premises - routine test, type test & Special test of transformer. Routine tests of transformer are mainly for confirming operational performance of individual unit in a production lot. Routine tests are carried out on every unit manufactured. To prove that the transformer meets customer’s specifications and design expectations, the transformer has to go through different testing procedures in manufacturer premises. Some transformer tests are carried out for confirming the basic design expectation of that transformer. These tests are done mainly in a prototype unit not in all manufactured units in a lot. Type test of transformer confirms main and basic design criteria of a production lot.

Test Field Capabilities n Most adavce and fully equipped testing laboratory hav-

ing facility for all routine,type and special tests of oil type and dry type distrubution transformer as per Inter-national standards

n Routine test and type test facility for pre-fabricated pacakge substation consist of transformer, MV switch gear and LV panel

n All test instruments and equipments are connected to PLC base operated system via central server as a mas-ter controller.

n Fully automatic PLC based software operated testing laboratory without any human intervention in test result measuring, recording and analysis for acceptance

n Lightening Impulse test with chopped wave facility to BIL 300KV peak.

n Sheilded PD cabin constructed for Partial Discharge measurement.

n Seperate AC generators to generates constant power frequency supply whlie measurement

n Facility to excute final testing with two seperate testing bays i.e. RT Area and ST Area.

Tests to be performed (As per International standards i.e. IEC60076 or ANSI)n Measurement of the winding resistance

Testing & Services


n Measurement of voltage ratio and Checking of phase displacement

n Measurement of insulation resistancen Measurement of short-circuit Impedance and Load lossn The measurement of no-load loss and no-load currentn Separate source AC voltage withstand testn Induced AC voltage testn CT Ratio and Polarity Testsn Lightning impulse tests (full- and chopped-wave) on

MV windings

n Temperature rise test (to be performed at highest cur-rent rating tap)

n Determination of sound levelsn Zero Sequence Impedance measurementn Measurement of Harmonics of the no load currentn Induced over voltage withstand test with partial dis-

charge measurementn Oil Breakdown Voltage (BDV) test

High Range of testing Equipment and Instruments n Haefelyn Tettex n Megger n Norma/Fluke n ABB n Dignosticsn Leroy Somer n Hipotronics n Siemens Hu

Test witness by third party n CESI, Italyn KEMA, Netherland n ATSA,UKn BVQI,UAEn TUVn AECOM

Transformer service

Aging assets, rising energy demand and the critical need to avoid unplanned outages, are challenging utilities and industries. Transtech service portfolio allows utilities and industrials to maximize the return on transformer assets by ensuring a high reliability, reducing life cycle costs and ensuring optimized performance, while lowering environ-mental impact.

Transtech provides services throughout the transformer life cycle, from commissioning to recycling, for all brands of transformers.

Service includes the followingn Supervision on Installation and Commissioningn Oil analysis and filtrationn Maintenance or Refurbishment.n Repairsn Spares and consumable.n Training


Major C

ustomer

Utilties Industries Oil & Gas EPC

Abu Dhabi Distribution Company (ADDC)

Emirate Aluminum (EMAL)

Abu Dhabi Company for Onshore Oil Operation (ADCO) Samsung

Al Ain Distribution Company (AADC) Super Cements Esnaad Larsen & Toubro (L&T)

Dubai Electric and water Authority (DEWA) JK Cements Qatar Gas Punj Lloyd (PLL)

Federal Electric and Water Authority (FEWA) Al Jaber FERTIL Engineering Solution (ENGSOL)

Ministry of Electricity (MOE), Iraq Bin Hafeez Bahrain Petroleum Company

(BAPCO) TRISTAR

Kahramaa GARMCO Saif Bin Darwish

TRANSCO Voltas

Space Age

SREC

Trojan

National Contracting Company (NCC)

National Project and Construction (NPC)

Siemens LLC

Scientechnic


ISO

& E

HSM

S C

ert.


S. No.Power Rating Voltage

Certificate No. Certification Agency Tank Construction(kVA) (kV)

Oil Type Transformers 1 1000kVA

22kV

18940 ASTA

Corrugated Tank

2 500kVA 18726 ASTA2 2000kVA A9030609 CESI3 1500kVA B0033628 CESI4 1500kVA 33kV 18941 ASTA5 1000kVA

11kV

18475 ASTA6 1600kVA 18474 ASTA7 1000kVA 18656 ASTA

Radiator Type8 1600kVA 18657 ASTA9 1250kVA TIC 2060-12 KEMA10 1500kVA B0001743 CESI

Corrugated Tank11 1000kVA A9036863 CESI12 500kVA A9007545 CESI13 200kVA (PMT) B0001838 CESIDry Type Transformers 1 500 KVA

11kV18693A ASTA

2 1000kVA B0024416 CESI3 1500kVA B0024415 CESI3 1500 KVA

22kV18694A ASTA

4 2000kVA B0031101 CESI

Hilton House, Corporation StreetRugby, Warwickshire CV21 2DN, United Kingdom

Telephone: +44 1788 578435 Facsimile: +44 1788 573605 www.intertek.com

Intertek Testing & Certification Ltd, Registered office: 25 Savile Row, London, W1S 2ES, United Kingdom Registered No: 3272281 (England), VAT No: GB 672-7639-96-011.

Laboratory Ref: 45666/1 ISSUE 3

DECLARATION OF TYPE TESTING FOR ASTA CERTIFICATION

MANUFACTURER: Siemens Transformer LLC, P.O.Box.128488, ICAD II Mussafah, Abu Dhabi, UAE

TESTED FOR: Kahramaa, Qatar General Electricity & Water Corporation, Qatar APPARATUS: Three phase, 1000kVA, 11/0.433kV, Mineral oil immersed, hermetically sealed,

transformer, Category 1, %Z - 5.45% , Vector Group: Dyn11, ±5% tappings, LI/AC: 75/28, Temp rise (oil / wdg): 45 / 50, Outline drawing: 711100156

DESIGNATION: 6100000054

TESTED BY: Electrical Research & Development Association ERDA Road, Makarpura Industrial Estate, Vadodara-390 010, Gujarat, INDIA

DATES OF TESTS: 6th to 12th December 2011

SPECIFICATIONS: IEC 60076-1: 2011-04 Edition 3.0, IEC 60076-2: 2011-02 Edition 3.0, IEC 60076-3: 2000 with corrigendum 1, IEC 60076-5: 2006 & IEC 60076-10: 2005

TESTS CARRIED OUT:

Routine Tests IEC 60076-1: 2011-04 Edition 3.0 Clause 11.1.2 Rated Power (Temperature Rise Test) : 1000kVA IEC 60076-2: 2011-02 Edition 3.0 Clause 7 Rated Insulation level : LI75 / AC 28 / AC 3 IEC 60076-3: 2000 Clause 11, 12, 13 and 14 Ability to Withstand Short-circuit IEC 60076-5: 2006 Sound Pressure Level : 33.3 dB IEC 60076-10: 2005 Clause 11 Determination of capacitances windings-to-earth & between windings. IEC 60076-1: 2011-04 Edition 3.0

Measurement of dissipation factor (tan δ) of the insulation system capacitances. IEC 60076-1: 2011-04 Edition 3.0

Performance:

The Test Results & the performance of the Transformer was considered satisfactory & subject to final analysis of the tests & scrutiny by Intertek Testing & Certification Ltd., an ASTA CERTIFICATE will be issued in respect to these tests.

Mrs. Rajani Menon Type Test Project Manager- ASTA Certification Email: [email protected], Phone: 0044 1788 820161

To, Siemens Transformer LLC, P.O.Box.128488 ICAD II Mussafah, Abu Dhabi, UAE

20 December 2011

Page 1 of 1

KEMA Nederland B.V. Utrechtseweg 310, 6812 AR Arnhem P.O. Box 9035, 6800 ET Arnhem The Netherlands T +31 26 3 56 91 11 F +31 26 3 89 24 77 [email protected] www.kema.com Registered Arnhem 09080262

To whom it may concern

Your ref. Our ref. 72110586.Q.1 Tel. +31 26 356 2670 Fax +31 26 351 1468

E-mail [email protected]

Arnhem, June 25, 2012

Subject: Declaration

We herewith declare that we have tested in June 2012, a three-phase, oil-immersed type distribution transformer, with serial no. S03572. The transformer was rated: 1250 kVA, 11 ± 2 x 2,5% kV / 0,433 kV, 50 Hz, connection symbol Dyn11, impedance voltage 6,32%, type of cooling ONAN. The transformer was manufactured by Siemens Transformers LLC., Abu Dhabi, United Arab Emirates. The transformer has passed:

− Routine tests before and after short-circuit tests − Dielectric Performance test − Temperature rise test − 9 asymmetrical short-circuit tests with a current duration of 0,5 s − 3 symmetrical short-circuit test with a current duration of 3,0 s at tap no 3. − Determination of sound levels

The out-of-tank inspection with respect to displacements, deformations of core and windings, connections or traces of discharges did not reveal any apparent defects.

Type Test Certificates

AvA

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on

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SIEM

ENS

CERT

IFIC

ATE


PERFORMANCE LETTER


Transtech TransformersLLC ICAD IIMussafahAbu Dhabi, UAE,P.O.Box: 128488Phone: +971 2 550 2062Fax: +971 2 550 2068

All rights reserved.Trademarks mentioned in this document are the property of TRANSTECH Transformers L.L.C. respective owners.

Subject to change without prior notice.The information in this document contains general descriptions of the technical options available, which may not apply in all cases. The required technical options should therefore be specified in the contract.

Publication Date Jan. 2014

www.transtech-ad.ae

Documents

Transforming high standards into leading solutions - My …alcontra.net/v2/wp-content/uploads/2014/04/TRANSTECH-CATALOG.pdf · Transforming high standards into leading solutions