Transtech Catalog

7/25/2019 Transtech Catalog

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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 allareas of transformers installations

testing, commissioning, operation

and maintenance.

Manufacturing location

ICAD II Mussafah, Abu Dhabi

United Arab Emirates

Capital

AED. 30,000,000

Annual production capacity5000MVA

Product Range

Rating: 50kVA to 6300kVA

Voltage Class: 36kV

TECHNOLOGY & LICENSE

Transtech 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 completecustomer 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, efcient and, at

the same time, silent.

ü Distribution Transformers

ü Cast Resin Transformers

ü Package Substation

ü Special Transformers likeconverter Transformer, Arc

furnace Transformers, Earth-

ing Transformers, Auto Transform-

ers, Motor Starting Transformers

ü Services

Our Quality = Your Security

I n t r o d u c t i o n

Product Portfolio


http://slidepdf.com/reader/full/transtech-catalog 3/203Under the Technical license of Siemens AG, Germany

GENERAL

Oil immersed transformers (OIT) aresuitable 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 specic needs.

Transformer Design

Hermetically sealed type or

conservator type for nominal ratingfrom 50kVA to 6300kVA.

Hermetic design transformers are

suitable for location like sub oor

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 soundin distribution transformers. Based

on the specication 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 iscopper 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 WINDINGS

The high voltage winding material is

copper. The shape of the conductor iseither 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 networkvoltages 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 needsto 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 ns are

designed to compensate for excessive

overpressure and to limit the effects

of liquid dilation. The corrugated

panels are welded onto the tank

Oi l T y p e T r a n s f or m e r

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. Additional

Neutral Bushing can be providedseparately on request for installing

protection current transformers. Air or

fully insulated cable box or bus duct

can be provided on request.

INSULATING LIQUID

The 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 PROTECTION

One 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 60076

Total 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 Construction

Corrugated n wall tank

Plain wall tank with radiator

Bolted or welded cover

Material Copper / Copper, Aluminum / Aluminum (on request)

Manufacturing Standards IEC 60076

Rated power Up to 6.3MVA

Voltage Class Upto 36kV

Insulation level Upto 200kV BIL

Phases 3-phase

Tappings ±2 x 2.5 % (or different range on request)

Voltage regulations With off-circuit tap changer

OverLoading As per IEC

Short circuit impedance As per IEC 60076 or on requestRated frequency 50 Hz or 60Hz

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

Material thermal class insulation According to IEC 60085 class A

Temperature rise As per IEC 60076 or on request

Type of cooling ONAN or other type of cooling like ONAF, KNAN

Dielectric liquid Mineral oil according to IEC Standard, on request silicon oil , synthetic ester

Short circuit withstand abilityThe 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 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 Specifcations (typical)

Hermetically Sealed Distribution TransformersConservator 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-lled 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 tally

acceptable material that makes the windings maintenance

free, moisture-resistant, tropicalized, ame-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 exceeds

the 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 coefcientsof 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 in

the transformer. The conductor strip and the insulation

material are bonded together by heating and thus form

a compact unit with sufcient strength to withstand radial

forces reliably.

Universal: The application areas

Dry-type transformers must be marked with proven

environmental, climate and re resistance ratings. Our

GEAFOL cast-resin transformers are suitable for universal

use and satisfy the requirements of the highest dened

classes, as proven in comprehensive testing:

n Environmental class E2

n Climate category C2

n Fire resistance class F1

C a s t - r e s i n t r a n s f o r m e r s

Cast Resin Distribution Transformer

The 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 rmly 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 mainte-

nance-free, moisture-proof, tropicalized, ame- re-

sistant and self-extinguishing

Connection tubes

Temperature monitoring

by PTC thermistor sensors in the LV winding (on

request PT 100)

Paint finish on steel parts

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 withstandabilityThe 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

AccessoriesTemperature 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 Rating

kVA 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

P a c k a g e S u b s t a t i on

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 Base

e) Enclosure (Optional on request)

Enclosure (Optional) Sheet Steel, GRP, Aluzinc

Applicable Standard IEC 62271-202, IEC 60076

Rated power Up to 2MVA

Voltage Class Upto 11kV

Layout RMU and FP can be on opposite side or on same side or on request

HV Ring Main Unit Oil Type / SF6 with Fuses / SF6 with circuit Breaker

LV Feeder Pillar On request or specication

Transformer Refer the details available in the oil type transformer product specication




M a n

u f a c t u r i n g F a c i l i t y

State of the art Production Facility

Core Section

GEORG core cutting machine with Automatic

Stacking Table (estacker)

Manufacturer

Heinrich Georg GMBH

Core Cutting with estacker

It is complete CNC control core cutting machine with

automatic estacking table. The benet 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 Table

The benet of core stacking table are as follows:

n Easy to assembly - can x 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-howis elliptical as compared to the rectangular or

circular windings which are most common in distribution

transformers

The benets 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 lling. 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 ofthe 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 DRYINGEvacuation 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 – DRYING

LF-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 maintainedwithin a dened tolerance at the set values during the

process. If during a dened time a dened pressure drop

is not exceeded above the values the drying phase is

nished and the oil-lling process is started automatically.

n PHASE III – OIL FILLING

Oil-lling is started automatically / alternatively by

pressing a button after the drying parameters have been

reached successfully. The already programmed electropneumatically powered lling valves are opened for the

lling process. During the oil-lling process, a dened

vacuum level between 0,5 mbar and 2 mbar will be

maintained. The average oil lling speed is controlled by

the control system of the oil purication equipment. The oil

lling 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 lling process

is nished. Once lling process is completed the aeration

valve will open automatically. When reaching atmospheric

pressure the bell-shaped vacuum chamber may be

opened for unloading.

The benet 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 efcient when compared withconventional 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 controlsystem with

control cabinet

and computer

Transformers with

shorted LV windingsLF

HF

P

L L L L L



Testing Capabilities

For conrming the specications and performances of anelectrical 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. Routinetests of transformer are mainly for conrming operationalperformance of individual unit in a production lot. Routine

tests are carried out on every unit manufactured. To provethat the transformer meets customer’s specications and

design expectations, the transformer has to go throughdifferent testing procedures in manufacturer premises.Some transformer tests are carried out for conrming the

basic design expectation of that transformer. These testsare done mainly in a prototype unit not in all manufactured

units in a lot. Type test of transformer conrms main andbasic 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 switchgear and LV panel

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

n Fully automatic PLC based software operated testinglaboratory without any human intervention in test resultmeasuring, 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 powerfrequency supply whlie measurement

n Facility to excute nal testing with two seperate testingbays 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

T e s t i n g & S e r vi c

e s



n Measurement of voltage ratio and Checking of phasedisplacement

n Measurement of insulation resistance

n Measurement of short-circuit Impedance and Load lossn The measurement of no-load loss and no-load current

n Separate source AC voltage withstand testn Induced AC voltage test

n CT Ratio and Polarity Tests

n Lightning impulse tests (full- and chopped-wave) onMV windings

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

n Determination of sound levelsn Zero Sequence Impedance measurement

n Measurement of Harmonics of the no load currentn Induced over voltage withstand test with partial dis-

charge measurement

n Oil Breakdown Voltage (BDV) test

High Range of testing Equipment and Instruments

n Haefelyn Tettex

n Megger

n Norma/Fluken ABB

n Dignosticsn Leroy Somer

n Hipotronics

n Siemens Hu

Test witness by third party

n CESI, Italy

n KEMA, Netherland

n ATSA,UKn BVQI,UAEn TUV

n 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 andensuring 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 following

n Supervision on Installation and Commissioning

n Oil analysis and ltration

n Maintenance or Refurbishment.

n Repairs

n Spares and consumable.

n Training



M a j or C u s t om e r

Utilties Industries Oil & Gas EPC

Abu Dhabi DistributionCompany (ADDC)

Emirate Aluminum(EMAL)

Abu Dhabi Company forOnshore Oil Operation (ADCO)

Samsung

Al Ain DistributionCompany (AADC)

Super Cements Esnaad Larsen & Toubro (L&T)

Dubai Electric and water Authority (DEWA)

JK Cements Qatar Gas Punj Lloyd (PLL)

Federal Electric andWater Authority (FEWA)

Al Jaber FERTIL Engineering Solution (ENGSOL)

Ministry of Electricity(MOE), Iraq

Bin HafeezBahrain 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



I S O

& E H S M S C e r t .



S. No.Power Rang Voltage

Cercate No. Cercaon Agency Tank Construcon(kVA) (kV)

Oil Type Transformers

1 1000kVA

22kV

18940 ASTA

Corrugated Tank

2 500kVA 18726 ASTA

2 2000kVA A9030609 CESI

3 1500kVA B0033628 CESI

4 1500kVA 33kV 18941 ASTA

5 1000kVA

11kV

18475 ASTA

6 1600kVA 18474 ASTA

7 1000kVA 18656 ASTA

Radiator Type8 1600kVA 18657 ASTA

9 1250kVA TIC 2060-12 KEMA

10 1500kVA B0001743 CESI

Corrugated Tank11 1000kVA A9036863 CESI

12 500kVA A9007545 CESI

13 200kVA (PMT) B0001838 CESI

Dry Type Transformers

1 500 KVA

11kV

18693A ASTA

2 1000kVA B0024416 CESI

3 1500kVA B0024415 CESI

3 1500 KVA22kV

18694A ASTA

4 2000kVA B0031101 CESI

Hilton House, Corporation StreetRugby, WarwickshireCV21 2DN, United Kingdom

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

Intertek Testing &Certification Ltd,Registered office:25 Savile Row,London, W1S 2ES, United KingdomRegistered No:3272281 (England),VATNo: GB672-7639-96-011.

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 AssociationERDA 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 11Determination of capacitances windings-to-earth &between windings. IEC 60076-1: 2011-04 Edition 3.0

Measurement of dissipation factor (tan δ) of theinsulation 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 MenonType Test Project Manager- ASTA CertificationEmail: [email protected],Phone: 0044 1788 820161

To,Siemens Transformer LLC, P.O.Box.128488ICAD 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.

T y p e T e s t C e r t i f c

a t e s



S I E M E N S C E R T I F I C A T E



P E R F OR MA N C E L E T T E R


http://slidepdf.com/reader/full/transtech-catalog 20/20

Transtech TransformersLLC

ICAD II

Mussafah

Abu Dhabi, UAE,

P.O.Box: 128488

Phone: +971 2 550 2062

Fax: +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 specied in the contract.

Publication Date Jan. 2014

www.transtech-ad.ae

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