siemens transformers

chapter 5

Transformers

TIP_Kap_05_Engl 11.08.2005 19:05 Uhr Seite C

Transformers are one of the primarycomponents for the transmission anddistribution of electrical energy. Theirdesign mainly results from the rangeof application, construction, ratedpower and voltage level.

The scope of transformer types ex-tends from generator transformers todistribution transformers.

Distribution transformers are withinthe range from 50 to 2,500 kVA andmax. 36 kV. In the last stage, theydistribute the electrical energy to theconsumers by feeding from the high-voltage into the low-voltage distribu-tion network. These are designed ei-ther as liquid-filled or as dry-typetransformers.

Transformers with a rated power upto 2.5 MVA and a voltage up to 36 kVare referred to as distribution trans-formers; all transformers of higherratings are classified as power trans-formers.

General standards andspecifications

The transformers comply with therelevant VDE specifications, i.e. DIN VDE 0532 “Transformers andreactors” and the “Technical condi-tions of supply for three-phase trans-formers” issued by VDEW and ZVEI.

Therefore they also satisfy the re-quirements of IEC Publication 60076,Parts 1 to 5, together with thestandards and specifications (HD andEN) of the European Union (EU).

Enquiries should be directed to themanufacturer where other standardsand specifications are concerned.Only the US (ANSI/NEMA) and Cana-dian (CSA) standards differ from IECby any substantial degree.

Important additional standards

C DIN 42500, HD 428: oil-immersedthree-phase distribution transform-ers 50–2500 kVA

C DIN 42523, HD 538: three-phase dry-type transformers100–2500 kVA

C DIN 45635 T30: noise levelC IEC 60289: reactance coils and

neutral grounding transformersC IEC 60076-10: measurement of

noise levelC IEC 60076-11: dry-type transformersC RAL: coating/varnish

5 Transformers

Totally Integrated Power by Siemens5/2

Rated power Max. operating voltageMVA kV

Oil distribution 0.05 – 2.5 ≤ 36transformers

GEAFOL cast-resin 0.10 – 40 ≤ 36transformers

Table 5/1 Transformer types

TIP_Kap_05_Engl 11.08.2005 19:05 Uhr Seite 2

Electrical Design

Power ratings and type of cooling

All power ratings in this guide are the product of rated voltage (no-load voltage times phase-factor for three-phase transformers) andrated current of the line side winding(at center tap, if several taps areprovided), expressed in kVA or MVA,as defined in IEC 60076-1. If only onepower rating and no cooling methodare shown, natural oil-air cooling(ONAN or OA) is implied for oil-immersed transformers. If tworatings are shown, forced-air cooling(ONAF or FA) in one or two steps isapplicable.

For cast-resin transformers, naturalair cooling (AN) is standard. Forced-air cooling (AF) is also applicable.

Temperature rise

In accordance with IEC 60076, thestandard temperature rise for oil-im-mersed power and distribution trans-formers is:

C 65 K (average winding temperaturemeasured by the resistance meth-od)

C 60 K maximum oil temperature(measured by thermometer)

The standard temperature rise forSiemens cast-resin transformers is

C 100 K (insulation class F) at HV andLV winding.

Whereby the standard ambient tem-peratures are defined as follows:C 40 °C maximum temperature,C 30 °C average on any one day,C 20 °C average in any one year,C –25 °C lowest temperature out-

doors,C –5 °C lowest temperature indoors.

Higher ambient temperatures requirea corresponding reduction in temper-ature rise, and thus affect price orrated power as follows:C 1.5% surcharge for each 1 K above

standard temperature conditions,or

C 1.0% reduction of rated power foreach 1 K above standard tempera-ture conditions.

These adjustment factors are applica-ble up to 15 K above standard tem-perature conditions.

Altitude of installation

The transformers are suitable for op-eration at altitudes up to 1000 me-tres above sea level. Site altitudesabove 1000 m necessitate the use ofspecial designs. For every 100 mabove the permissible altitude of in-stallation, the rated power for oil-im-mersed transformers is to be re-duced by approx. 0.4% and for dry-type transformers for approx. 0.5%.

55/3

Transformers

Dy1

iii

Dy5

Dy11

Yd1

Yd5

Yd11

ii

i

III II

I1

iiiii

iIII II

I

5

iiiii

i

III II

I11

iii

iii

III II

I11

iiiii

iIII II

I

5

iii

ii

i

III II

I1

Fig. 5/1 Most commonly used vector groups



Transformer losses andefficiencies

Losses and efficiencies stated in thismanual are average values for guid-ance only. They are applicable if noloss evaluation figure is stated in theinquiry (see following chapter) andthey are subject to the tolerancesstated in IEC 60076-1, namely +10%of the total losses, or +15% of eachcomponent loss, provided that thetolerance for the total losses is notexceeded.

If optimized and/or guaranteed losseswithout tolerances are required, thismust be stated in the inquiry.

Connections and vector groups

Distribution transformersThe transformers listed in this man-ual are all three-phase transformerswith one set of windings connectedin star (wye) and the other one indelta, whereby the neutral of thestar-connected winding is fully ratedand brought to the outside.

The primary winding (HV) is normallyconnected in delta, the secondarywinding (LV) in wye. The electricaloffset of the windings in respect toeach other is either 30, 150 or 330degrees standard (Dy1, Dy5, Dy11).Other vector groups as well as sin-gle-phase transformers and auto-transformers on request.

Test voltages

Power-frequency withstand voltagesand lightning-impulse withstandvoltages are in accordance with IEC 60076-3, Paragraph 5, Table II, asfollows:

Conversion to 60 Hz – possibilities

All ratings in the selection tables ofthis guide are based on 50 Hz opera-tion. For 60 Hz operation, the follow-ing options apply:C Rated power and impedance volt-

age are increased by 10%, all otherparameters remain identical.

C Rated power increases by 20%,but no-load losses increase by 30%and noise level increases by 3 dB,all other parameters remain identi-cal (this layout is not possible forcast-resin transformers).

C All technical data remain identical,price is reduced by 5%.

C Temperature rise is reduced by 10 K, load losses are reduced by15%, all other parameters remainidentical.

Overloading

Overloading of Siemens transformersis guided by the relevant IEC 60354“Loading guide for oil-immersedtransformers” and the (similar) ANSIC57.92 “Guide for loading mineral-oil-immersed power transformers.”

Overloading of GEAFOL cast-resintransformers according to IEC 60905"Loading guide."

Routine and special tests

All transformers are subjected to thefollowing routine tests in the factory:C Measurement of winding resist-

anceC Measurement of voltage ratio and

check of polarity or vector groupC Measurement of impedance volt-

ageC Measurement of load lossC Measurement of no-load loss and

no-load currentC Induced overvoltage withstand test

(windings test)C Separate-source voltage withstand

test (AC test voltage)C Partial discharge test (only GEAFOL

cast-resin transformers).

The following special tests are op-tional and must be specified furtherin the enquiry:C Lightning-impulse voltage test

(LI test), full-wave and chopped-wave (to be specified)

C Partial discharge testC Heat-run test at natural or forced

cooling (to be specified)C Noise level testC Peak short-circuit test.

Test certificates are issued for all ofthe above tests on request.


Transformer cell (indoor installation)

The transformer cell must have thenecessary electrical clearances whenan open-air connection is used. Theventilation system must be largeenough to fulfil the recommendationsfor the maximum temperatures ac-cording to IEC.

Transformer loss evaluation

The sharply increased costs of elec-trical energy have made it almostmandatory for buyers of electricalmachinery to carefully evaluate theinherent losses of this equipment. Incase of distribution and power trans-formers, which operate continuouslyand most frequently in loaded condi-tion, this is especially important. Asan example, the added cost of loss-optimized transformers can in mostcases be counterbalanced by savingsin power consumption in less thanthree years.

Low-loss transformers use more andbetter materials for their construction,therefore their purchase price ishigher. By stipulating loss evaluationfigures in the transformer enquiry, themanufacturer receives the necessaryinformation to offer a loss-optimizedtransformer rather than the low-costmodel.

Detailed loss evaluation methods fortransformers have been developedand are described accurately in theliterature, taking the project-specificevaluation factors of a given cus-tomer into account.

Table 5/2 gives a simplified methodfor a quick evaluation of differentquoted transformer losses, makingthe following assumptions:C The transformers are operated con-

tinuouslyC The transformers operate at partial

load, but this partial load is constant

C Additional cost and inflation factorsare not considered

C Demand charges are based on100% load.

55/5

Transformers

Table 5/2 Cost examination for transformer selection

A. Capital cost

Cp · r amountCC = –––––– –––––––

100 year

Cp = purchase price

p · qnr = –––––– = depreciation factor

qn – 1

pq = –––– + 1 = interest factor

100

p = interest rate in % p.a.

n = depreciation period in years

B. Cost of no-load loss

amount CP0 = Ce · 8760 h /year · P0 –––––––

year

amount Ce = energy charges –––––––

kWh

P0 = no-load loss [kW]

C. Cost of load loss

amount CPk = Ce · 8760 h /year · αα2 · Pk –––––––

year

constant operating load α = ––––––––––––––––––––––––

rated load

Pk = copper loss [kW]

D. Cost resulting from demand charges

amount CD = Cd (P0 + Pk) –––––––

year

amount Cd = demand charges ––––––––

kW · year



The total cost of owning and operat-ing a transformer for one year is thusdefined as follows:

A. Capital cost (CC) taking into account the purchaseprice (Cp), the interest rate (p), andthe depreciation period (n)

B. Cost of no-load loss (CP0) based on the no-load loss (P0), andenergy cost (Ce)

C. Cost of load loss (CPk) based on the copper loss (Pk), theequivalent annual load factor (α),and energy cost (Ce)

D. Demand charges (Cd)based on the power demand setby the power supply company,and the total power loss.

These individual costs are calculatedas shown in Table 5/2.

To demonstrate the usefulness ofsuch calculations, the following arbi-trary examples are shown, using fac-tors that can be considered typical inGermany, and neglecting the effectsof inflation on the rate assumed.

Depreciation period................................. n = 20 years Depreciation factorInterest rate ............................................ p = 12% p.a. r = 13.99

Energy charge ......................................... Ce = 0.13 €/kWh

€Demand charge....................................... Cd = 179 –––––––

kW · yearEquivalent annual load factor .................. α = 0.8

Table 5/3 Example: 1,600 kVA distribution transformer

A. Low-cost transformer

P0 = 2.6 kW no-load lossPk = 20 kW load lossCp = € 12800 purchase price

12,800 · 13.99Cd = ––––––––––––––

100= € 1,790/year

CP0 = 0.13 · 8760 · 2.6= € 2,961/year

CPk = 0.13 · 8760 · 0.64 ·20= € 14,580/year

C0 = 179 · (2.6 + 20)= € 4,045/year

Total cost of owning and operating thistransformer is thus:

€ 23,376/year

B. Loss-optimized transformer

P0 = 1.7 kW no-load lossPk = 17 kW load lossCp = € 14300 purchase price

14,300 · 13.99Cd = ––––––––––––––

100= € 2,000/year

CP0 = 0.13 · 8760 · 1.7= € 1,936/year

CPk = 0.13 · 8760 · 0.64 ·17= € 12,390/year

C0 = 179 · (1.7 + 17)= € 3,350/year

Total cost of owning and operating thistransformer is thus:

€ 19,676/year

The energy saving of the optimized distribution transformer of € 3,700 per yearpays for the increased purchase price in less than one year.


Mechanical Design

General mechanical design for oil-immersed transformers

C Iron core made of grain-orientedelectrical sheet steel insulated onboth sides, core-type

C Windings consisting of copper sec-tion wire, copper band or aluminumband. The insulation has a high dis-ruptive strength and is tempera-ture-resistant, thus guaranteeing along service life

C Designed to withstand short circuitfor at least 2 seconds (IEC)

C Oil-filled tank designed as tank withstrong corrugated walls or as radia-tor tank

C Transformer base with plain orflanged wheels (skid base avail-able)

C Cooling/insulation liquid: Mineral oilaccording to VDE 0370/IEC 60296(3).Silicone oil or synthetic liquids areavailable (on request)

C Standard coating for outdoor instal-lation. Coatings for special applica-tions (e.g. in aggressive environ-ments) are available

Tank design and oil preservationsystem

TUMETIC® sealed-tank distributiontransformersIn ratings up to 2,500 kVA and 170 kVLI this is the standard sealed-tankdistribution transformer withoutconservator and gas cushion. TheTUMETIC transformer is alwayscompletely filled with oil; oil expan-sion is taken up by the flexible corru-gated steel tank (variable volumetank design), whereby the maximum

operating pressure remains at only afraction of the usual. These trans-formers are always shipped com-pletely filled with oil and sealed for their lifetime. Bushings can beexchanged from the outside withoutdraining the oil below the top of theactive part.

The hermetically sealed system pre-vents oxygen, nitrogen, or humidityfrom contact with the insulating oil.This improves the ageing propertiesof the oil to the extent that no main-tenance is required on these trans-formers for their lifetime. Generally,the TUMETIC transformer is lowerthan the TUNORMA®transformer.This design has been in successfulservice since 1973. A specialTUMETIC protection device has beendeveloped for this transformer.

TUNORMA distribution transform-ers with conservator This is the standard distribution trans-former design in all ratings. The oillevel in the tank and the top-mountedbushings is kept constant by a con-servator vessel or expansion tankmounted at the highest point of thetransformer. Oil level changes due tothermal cycling affect the conserva-tor only. The ambient air is preventedfrom direct contact with the insulat-ing oil through oil traps and dehydrat-ing breathers.

Tanks from 50 kVA to approximately6,000 kVA are preferably of the cor-rugated steel design, whereby thesidewalls are formed on automaticmachines into integral cooling pock-ets. Suitable spot welds and bracesrender the required mechanicalstability. Tank bottom and cover arefabricated from rolled and weldedsteel plate.

55/7

Transformers

Photo 5/2 630 kVA, three-phase, TUNORMA20 kV ± 2.5 %/0.4 kV distributiontransformer

Photo 5/1 Cross section of a TUMETICthree-phase distributiontransformer



Connection Systems

Distribution transformers

All Siemens transformers have top-mounted HV and LV bushings accord-ing to DIN in their standard version.Besides the open bushing arrange-ment for direct connection of bare orinsulated wires, three basic insulatedterminal systems are available.

Fully enclosed terminal box forcables (Photo 5/3)

Available for either HV or LV side, orfor both. Horizontally split design indegree of protection IP 44 or IP 54(totally enclosed and fully protectedagainst contact with live parts, plusprotection against drip, splash orspray water).

Cable installation through split cableglands and removable plates facingdiagonally downwards. Suitable forsingle-core or three-phase cableswith solid dielectric insulation, withor without stress cones. Multiple ca-bles per phase are terminated onauxiliary bus structures attached tothe bushings. Removal of trans-former by simply bending back thecables.

Insulated plug connectors (Photo 5/4)

For substation installations, suitableHV can be applied using insulatedelbow connectors in LI ratings up to170 kV. Flange connection (Photo 5/5)

Air-insulated bus ducts, insulatedbusbars or throat-connectedswitchgear cubicles are connectedvia standardized flanges on steel ter-minal enclosures. These can accom-modate either HV, LV or both bush-ings. Fiberglass-reinforced epoxy

partitions are available between HVand LV bushings if flange/flangearrangements are chosen.

Apart from open-type arrangementsof the bushings, all terminal systemcombinations listed in Table 5/4 arepossible.

Photo 5/3 Fully enclosed cable connection box

Photo 5/4 Grounded metal elbow plug connection

Photo 5/5 Flange connection for switchgearand bus ducts

HV LV

Cable box Cable box

Cable box Flange

Flange Cable box

Flange Flange connection boxes

Elbow Cable boxconnector

Elbow Flangeconnector

Table 5/4 Possible combinations of connection systems


Accessories and ProtectiveDevices

Accessories not listed completely.Deviations are possible.

Double-float Buchholz relay (Photo 5/6)

For sudden pressure rise and gas de-tection in oil-immersed transformertanks with conservator. Installed inthe connecting pipe between tankand conservator and responding to in-ternal arcing faults and slow decom-position of insulating materials. Addi-tionally, backup function of oil alarm.

The relay is actuated either by pres-sure waves or gas accumulation orby loss of oil below the relay level.Separate contacts are installed foralarm and tripping.

In case of a gas accumulation alarm,gas samples can be drawn directly atthe relay with a small chemical test-ing kit. Discoloring of two liquids indi-cates either arcing by-products or in-sulation decomposition products inthe oil. No change in color indicatesan air bubble.

Dial-type contact thermometer(Photo 5/7)

Indicates actual top-oil temperature.Sensor mounted in well in tankcover. Up to four separately ad-justable alarm contacts and one maxi-mum pointer are available. Installedto be readable from the ground.These instruments can also be usedto control forced-cooling equipment.

Magnetic oil level indicator (Photo 5/8)

The float position inside of the con-servator is transmitted magneticallythrough the tank wall to the indicator.Devices supplied with limit (position)switches for high- and low-levelalarm are available. Readable fromthe ground.

55/9

Transformers

Photo 5/6 Double-float Buchholz relay Photo 5/7 Dial-type contact thermometer

Photo 5/8 Magnetic oil level indicator



Protective device for hermeticallysealed transformers (TUMETIC)(Photo 5/9)

For use on hermetically sealedTUMETIC distribution transformers.Gives alarm upon loss of oil and gasaccumulation. Mounted directly atthe (permanently sealed) filler pipe ofthese transformers.

Pressure relief device (Photo 5/12)

Relieves abnormally high internalpressure shock waves. Easily visibleoperation pointer and alarm contact.Reseals positively after operation andcontinues to function without opera-tor action.

Dehydrating breather (Photos 5/10, 5/11)

A dehydrating breather removesmost of the moisture from the airwhich is drawn into the conservatoras the transformer cools down. Thedehydrating breather contributes tosafe and reliable operation of thetransformer.

Photo 5/9 Protective device for hermetically sealed transformers (TUMETIC)

Photo 5/10 Dehydrating breather Photo 5/11 Dehydrating breather

Photo 5/12 Pressure relief device


Technical Data ofTUNORMA and TUMETICDistribution Transformers

Note: The tank with strong corru-gated walls represented in Fig. 5/3 isthe preferred design. For high volt-ages up to 24 kV and a rating up to2,500 kVA (and with high voltages >24–36 kV and a rating up to 800 kVA),the conservator is fitted at the verti-cal side just above the low-voltagebushings.

Losses

The standard HD 428.1.S1 (= DIN42500, Part 1) applies to three-phaseoil-immersed distribution transform-ers 50 Hz, from 50 kVA to 2,500 kVA,Um to 24 kV.

For load losses (Pk), three differentlistings (A, B and C) were specified.There were also three listings (A’, B’and C’) for no-load losses (P0) andcorresponding sound levels.

Due to the different requirements,pairs of values were proposed which,in the national standard, permit oneor several combinations of losses.

DIN 42500 specifies the combina-tions A-C’, C-C’ and B-A’ as beingmost suitable.

The combinations B-A’ (normallosses) and A-C’ (reduced losses) areapproximately in line with previousstandards. In addition, there is the C-C’ combination. Transformers ofthis kind with additionally reducedimpedance especially economical(maximum efficiency > 99%). Thehigher costs of these transformersare counteracted by the energy sav-ings which they make.

Standard HD 428.3.S1 (= DIN 42500-3)specifies the losses for oil distribu-tion transformers up to Um = 36 kV.For load losses, the listings D and E,

for no-load losses, the listings D’ andE’ were specified. In order to find themost efficient transformer, pleasesee the aforementioned section on“Transformer loss evaluation.”

55/11

Transformers

Standard DIN 42500

Rated power 50–2500 kVA

Rated frequency 50 Hz

HV rating up to 36 kV

Taps on HV side ± 2.5 % or 2 x ± 2.5 %

LV rating 400 – 720 V (special designs for up to 12 kVcan be built)

Connection HV winding: delta

LV winding: star (up to 100 kVA: zigzag)

Impedance voltage at 6 % at (4 % only up to 630 kVA rated rated current power and HV rating

up to 24 kV)

Cooling ONAN

Protection class IP 00

Final coating RAL 7033 (other colors are available)

Um Lightning impulse test voltage AC test voltagekV kV kV

1.1 – 3

12 75 28

24 125 50

36 170 70

Table 5/6 Insulation level (IP 00)

Table 5/5 TUMETIC and TUNORMA three-phase oil-immersed distribution transformers



2W2V2U2N

1W2U1U

8

A1

2

H1

11

12

9

7

10

E

3 8

6

B1

2W2V2U2N

1W2U1U

8A1

2

H1

9

7

10

E

3 8

6

B1

4 15

2 Oil drain plug

3 Thermometer pocket

6 Adjustment for off-load tap changer

7 Rating plate (relocatable)

8 Grounding terminals

1 Oil level indicator

2 Oil drain plug

3 Thermometer pocket

4 Buchholz relay (optional extra)

5 Dehydrating breather (optional extra)

6 Adjustment for off-load tap changer

7 Rating plate (relocatable)

8 Grounding terminals

9 Towing eye, 30 mm dia.

10 Lashing lug

Notes: Tank with strong corrugated walls shown in illustration is the preferred design. With HV ratings up to 24 kV and rated power up to 2,500 kVA (and with HV ratings > 24–36 kV and rated power up to 800 kVA), the conservator is fitted on the long side just above the LV bushings.

9 Towing eye, 30 mm dia.

10 Lashing lug

11 Oil filler neck

12 Provision for mounting protective device

Fig. 5/2 TUMETIC distribution transformer (sealed tank)

Fig. 5/3 TUNORMA distribution transformer (with conservator)


Rated

power

Sn

kVA

Max.

rated

voltage

HV side

Um

kV

Imped-

ance

voltage

Uz

%

Combi-

nation of

losses

acc. to

CENELEC

No-load

losses

P0

W

Load

losses

Pk 75*

W

Sound

pressure

level 1 m

tolerance

+ 3 dB

LPA

dB

Sound

power

level

LWA

dB

Total

weight

kg

Roller-

to-roller

distance

(centers)

E

mm

Dimensions

Length Width Height

A1 B1 H1

mm mm mm

Type

4JB.. 4HB..

TUN

ORM

A

TUM

ETIC

TUN

ORM

A

TUM

ETIC

TUN

ORM

A

TUM

ETIC

TUN

ORM

A

TUM

ETIC

TUN

ORM

A

TUM

ETIC

50

100

160

(200)

12

24

36

12

24

36

12

24

36

12

24

36

4

4

4

4

4

4

6

4

4

4

4

4

4

6

4

4

4

4

4

4

6

4

4

4

4

4

4

6

..4744-3LB

..4744-3RB

..4744-3TB

..4767-3LB

..4767-3RB

..4767-3TB

..4780-3CB

..5044-3LB

..5044-3RB

..5044-3TB

..5067-3LB

..5067-3RB

..5067-3TB

..5080-3CB

..5244-3LA

..5244-3RA

..5244-3TA

..5267-3LA

..5267-3RA

..5267-3TA

..5280-3CA

..5344-3LA

..5344-3RA

..5344-3TA

..5367-3LA

..5367-3RA

..5367-3TA

..5380-3CA

B-A'

A-C'

C-C'

B-A'

A-C'

C-C'

E-D´

B-A'

A-C'

C-C'

B-A'

A-C'

C-C'

E-D´

B-A'

A-C'

C-C'

B-A'

A-C'

C-C'

E-D´

B-A'

A-C'

C-C'

B-A'

A-C'

C-C'

E-D´

190

125

125

190

125

125

230

320

210

210

320

210

210

380

460

300

300

460

300

300

520

550

360

360

550

360

360

600

1350

1100

875

1350

1100

875

1450

2150

1750

1475

2150

1750

1475

2350

3100

2350

2000

3100

2350

2000

3350

3600

2760

2350

3600

2760

2350

3800

42

34

34

42

34

33

x

45

35

35

45

35

35

x

47

37

38

47

37

37

x

48

38

38

48

38

38

x

55

47

47

55

47

47

52

59

49

49

59

49

49

56

62

52

52

62

52

52

59

63

53

53

63

53

53

61

340

400

420

370

430

480

500

500

570

600

520

600

640

660

620

700

760

660

730

800

900

720

840

900

800

890

950

1000

350

430

440

380

460

510

x

500

570

620

530

610

680

x

610

690

780

640

730

820

x

710

830

920

780

910

980

x

860

825

835

760

860

880

1000

1090

980

1030

1020

1030

960

1050

1140

1130

985

1150

1030

1120

1120

1190

1070

1130

1290

1110

1080

1250

980

1045

985

860

860

1100

x

1020

980

930

1140

1030

1060

x

1140

1010

1085

1150

930

1120

x

1190

1120

1130

1290

1230

1180

x

660

660

660

660

660

685

710

660

660

660

685

690

695

780

710

660

660

695

695

710

800

680

660

660

820

755

705

800

660

660

660

660

660

685

710

660

660

660

685

690

695

780

710

660

660

695

695

710

800

680

660

660

820

755

705

800

1210

1210

1220

1315

1300

1385

1530

1275

1315

1320

1360

1400

1425

1600

1350

1390

1380

1440

1540

1475

1700

1450

1470

1450

1595

1630

1595

1700

1085

1085

1095

1235

1220

1265

x

1110

1145

1150

1245

1280

1305

x

1185

1220

1215

1320

1420

1355

x

1285

1300

1285

1425

1460

1430

x

520

520

520

520

520

520

520

520

520

520

520

520

520

520

520

520

520

520

520

520

520

520

520

520

520

520

520

520

55/13

Dimensions and weights are approximate values.

Power ratings in parentheses are not standardized.

x: On request

* Related to 75 °C

Table 5/7 Selection table for oil-immersed distribution transformers from 50 to 2,500 kVA


Rated

power

Sn

kVA

Max.

rated

voltage

HV side

Um

kV

Imped-

ance

voltage

Uz

%

Combi-

nation of

losses

acc. to

CENELEC

No-load

losses

P0

W

Load

losses

Pk 75*

W

Sound

pressure

level 1 m

tolerance

+ 3 dB

LPA

dB

Sound

power

level

LWA

dB

Total

weight

kg

Roller-

to-roller

distance

(centers)

E

mm

Dimensions

Length Width Height

A1 B1 H1

mm mm mm

Type

4JB.. 4HB..TU

NO

RMA

TUM

ETIC

TUN

ORM

A

TUM

ETIC

TUN

ORM

A

TUM

ETIC

TUN

ORM

A

TUM

ETIC

TUN

ORM

A

TUM

ETIC

250

(315)

400

(500)

12

24

36

12

24

36

12

24

36

12

24

36

4

4

4

4

4

4

6

4

4

4

4

4

4

6

4

4

4

4

4

4

6

4

4

4

4

4

4

6

..5444-3LA

..5444-3RA

..5444-3TA

..5467-3LA

..5467-3RA

..5467-3TA

..5480-3CA

..5544-3LA

..5544-3RA

..5544-3TA

..5567-3LA

..5567-3RA

..5567-3TA

..5580-3CA

..5644-3LA

..5644-3RA

..5644-3TA

..5667-3LA

..5667-3RA

..5667-3TA

..5580-3CA

..5744-3LA

..5744-3RA

..5744-3TA

..5767-3LA

..5767-3RA

..5767-3TA

..5780-3CA

B-A'

A-C'

C-C'

B-A'

A-C'

C-C'

E-E´

B-A'

A-C'

C-C'

B-A'

A-C'

C-C'

E-E´

B-A'

A-C'

C-C'

B-A'

A-C'

C-C'

E-E´

B-A'

A-C'

C-C'

B-A'

A-C'

C-C'

E-E´

650

425

425

650

425

425

650

780

510

510

780

510

510

760

930

610

610

930

610

610

930

1100

720

720

1100

720

720

1050

4200

3250

2750

4200

3250

2750

4250

5000

3850

3250

5000

3850

3250

5400

6000

4600

3850

6000

4600

3850

6200

7100

5450

4550

7100

5450

4550

7800

50

40

40

49

39

40

x

50

40

40

50

40

40

x

52

42

42

52

42

42

x

53

42

43

53

42

43

x

65

55

55

65

55

55

62

66

56

56

66

56

56

64

68

58

58

68

58

58

65

69

59

59

69

59

59

66

830

940

1050

920

1010

1120

1100

980

1120

1240

1050

1170

1250

1220

1180

1320

1470

1240

1370

1490

1480

1410

1650

1700

1460

1650

1860

1680

820

920

1070

900

1010

1140

x

960

1100

1260

1030

1150

1280

x

1160

1310

1470

1220

1350

1520

x

1380

1620

1710

1440

1620

1910

x

1300

1260

1220

1340

1140

1220

1350

1440

1400

1380

1450

1410

1395

1420

1470

1400

1410

1570

1475

1440

1470

1500

1560

1500

1470

1495

1535

1510

1300

1260

1220

1340

1190

1340

x

1330

1250

1260

1350

1270

1290

x

1390

1360

1390

1570

1400

1400

x

1430

1550

1470

1530

1420

1500

x

810

670

690

800

760

715

800

820

820

820

840

820

820

960

930

820

820

940

820

820

990

840

890

820

835

835

820

1030

810

820

700

760

680

710

x

820

820

820

840

820

820

x

930

820

820

940

820

820

x

840

890

820

850

820

820

x

1450

1480

1530

1620

1675

1640

1680

1655

1690

1665

1655

1755

1675

1700

1700

1700

1695

1655

1760

1765

1830

1710

1745

1745

1755

1815

1860

1900

1285

1415

1310

1450

1510

1475

x

1385

1415

1390

1510

1610

1540

x

1425

1430

1420

1510

1615

1540

x

1440

1470

1470

1610

1665

1645

x

520

520

520

520

520

520

520

670

670

670

670

670

670

670

670

670

670

670

670

670

670

670

670

670

670

670

670

670




x: On request

* Related to 75 °C



Rated

power

Sn

kVA

Max.

rated

voltage

HV side

Um

kV

Imped-

ance

voltage

Uz

%

Combi-

nation of

losses

acc. to

CENELEC

No-load

losses

P0

W

Load

losses

Pk 75*

W

Sound

pressure

level 1 m

tolerance

+ 3 dB

LPA

dB

Sound

power

level

LWA

dB

Total

weight

kg

Roller-

to-roller

distance

(centers)

E

mm

Dimensions

Length Width Height

A1 B1 H1

mm mm mm

Type

4JB.. 4HB..

TUN

ORM

A

TUM

ETIC

TUN

ORM

A

TUM

ETIC

TUN

ORM

A

TUM

ETIC

TUN

ORM

A

TUM

ETIC

TUN

ORM

A

TUM

ETIC

630

800

1000

12

24

36

12

24

36

12

24

36

4

4

4

6

6

6

4

4

4

6

6

6

6

6

6

6

6

6

6

6

6

6

6

6

6

6

6

..5844-3LA

..5844-3RA

..5844-3TA

..5844-3PA

..5844-3SA

..5844-3UA

..5867-3LA

..5867-3RA

..5867-3TA

..5867-3PA

..5867-3SA

..5867-3UA

..5880-3CA

..5944-3PA

..5944-3SA

..5944-3UA

..5967-3PA

..5967-3SA

..5967-3UA

..5980-3CA

..6044-3PA

..6044-3SA

..6044-3UA

..6067-3PA

..6067-3SA

..6067-3UA

..6080-3CA

B-A'

A-C'

C-C'

B-A'

A-C'

C-C'

B-A'

A-C'

C-C'

B-A'

A-C'

C-C'

E-E´

B-A'

A-C'

C-C'

B-A'

A-C'

C-C'

E-E´

B-A'

A-C'

C-C'

B-A'

A-C'

C-C'

E-E´

1300

860

860

1200

800

800

1300

860

860

1200

800

800

1300

1450

950

950

1450

950

950

1520

1700

1100

1100

1700

1100

1100

1700

8400

6500

5400

8700

6750

5600

8400

6500

5400

8700

6750

5600

8800

10700

8500

7400

10700

8500

7400

11000

13000

10500

9500

13000

10500

9500

13000

53

43

43

53

43

43

53

43

43

53

43

43

x

55

45

44

55

45

44

x

55

45

45

55

45

45

x

70

60

60

70

60

60

70

60

60

70

60

60

67

72

62

62

72

62

62

68

73

63

63

73

63

63

68

1660

1850

2000

1750

1950

2160

1690

1940

2100

1730

1970

2240

1950

1990

2210

2520

2000

2390

2590

2400

2450

2660

2800

2530

2750

2830

2850

1660

1810

1990

1760

1920

2130

1650

1920

2130

1720

1960

2210

x

1960

2290

2490

1950

2340

2550

x

2640

2610

2750

2720

2690

2810

x

1680

1495

1535

1720

1665

1670

1665

1685

1600

1780

1645

1740

1740

1780

1720

1760

1720

1760

1770

1800

1790

1830

1830

1830

1790

1725

2120

1480

1420

1380

1560

1600

1560

1640

1680

1490

1580

1640

1670

x

1540

1830

1710

1710

1710

1700

x

1630

1830

1830

1670

1740

1770

x

880

835

820

890

870

830

860

870

820

880

830

880

1080

1000

900

920

1000

960

930

1100

1000

1040

1040

1090

1050

990

1160

880

820

820

890

870

830

860

870

820

880

830

880

x

1000

960

920

1000

960

930

x

1000

1040

1040

1010

1050

990

x

1755

1785

1860

1920

1740

1840

1810

1910

1940

1760

1810

1840

1940

1905

1935

1975

1885

1945

1985

2030

2095

2025

2105

2095

2055

2065

2220

1585

1510

1520

1685

1400

1500

1595

1695

1725

1610

1595

1625

x

1660

1630

1730

1670

1730

1780

x

2070

1770

1840

2120

1840

1850

x

670

670

670

670

670

670

670

670

670

670

670

670

670

670

670

670

670

670

670

670

820

820

820

820

820

820

820

55/15




x: On request

* Related to 75 °C

Transformers


Rated

power

Sn

kVA

Max.

rated

voltage

HV side

Um

kV

Imped-

ance

voltage

Uz

%

Combi-

nation of

losses

acc. to

CENELEC

No-load

losses

P0

W

Load

losses

Pk 75*

W

Sound

pressure

level 1 m

tolerance

+ 3 dB

LPA

dB

Sound

power

level

LWA

dB

Total

weight

kg

Roller-

to-roller

distance

(centers)

E

mm

Dimensions

Length Width Height

A1 B1 H1

mm mm mm

Type

4JB.. 4HB..TU

NO

RMA

TUM

ETIC

TUN

ORM

A

TUM

ETIC

TUN

ORM

A

TUM

ETIC

TUN

ORM

A

TUM

ETIC

TUN

ORM

A

TUM

ETIC

(1250)

1600

(2 000)

2 500

12

24

36

12

24

36

12

24

36

12

24

36

6

6

6

6

6

6

6

6

6

6

6

6

6

6

6

6

6

6

6

6

6

6

6

6

6

6

6

6

..6144-3PA

..6144-3SA

..6144-3UA

..6167-3PA

..6167-3SA

..6167-3UA

..6180-3CA

..6244-3PA

..6244-3SA

..6244-3UA

..6267-3PA

..6267-3SA

..6267-3UA

..6280-3CA

..6344-3PA

..6344-3SA

..6344-3UA

..6367-3PA

..6367-3SA

..6367-3UA

..6380-3CA

..6444-3PA

..6444-3SA

..6444-3UA

..6467-3PA

..6467-3SA

..6467-3UA

..6480-3CA

B-A'

A-C'

C-C'

B-A'

A-C'

C-C'

E-E´

B-A'

A-C'

C-C'

B-A'

A-C'

C-C'

E-E´

B-A'

A-C'

C-C'

B-A'

A-C'

C-C'

E-E´

B-A'

A-C'

C-C'

B-A'

A-C'

C-C'

E-E´

2100

1300

1300

2100

1300

1300

2150

2600

1700

1700

2600

1700

1700

2600

2900

2050

2050

2900

2050

2050

3200

3500

2500

2500

3500

2500

2500

3800

16000

13200

11400

16000

13200

11400

16400

20000

17000

14000

20000

17000

14000

19200

25300

21200

17500

25300

21200

17500

22000

29000

26500

22000

29000

26500

22000

29400

56

46

46

56

46

46

x

57

47

47

57

47

47

x

58

49

49

58

49

49

x

61

51

51

61

51

51

x

74

64

64

74

64

64

70

76

66

66

76

66

66

71

78

68

68

78

68

68

75

81

71

71

81

71

71

76

2900

3100

3340

2950

3190

3390

3360

3450

3640

3930

3470

3670

4010

3930

4390

4270

4730

4480

4290

4910

5100

5200

5150

5790

5420

5260

5640

5900

3080

3040

3040

3200

3120

3330

x

3590

3590

3880

3690

3850

3950

x

4450

4430

4710

4500

4490

4840

x

5090

5110

5660

5220

5220

5470

x

1930

1810

1755

2020

1840

1810

2150

1970

2030

2020

2070

2030

2000

2170

2100

2080

2020

2020

2190

2110

2260

2115

2195

2190

2115

2195

2160

2320

1850

1780

1720

1780

1810

1780

x

1870

1760

1900

1830

2000

1850

x

1890

1840

1730

1860

2030

1980

x

2030

1950

2190

2030

2030

2080

x

1260

990

1015

1260

1060

1015

1250

1220

1080

1110

1280

1230

1030

1340

1330

1330

1330

1330

1330

1330

1380

1345

1345

1330

1335

1335

1330

1390

1100

990

1000

1100

1060

990

x

1140

1090

1100

1120

1070

1030

x

1330

1330

1330

1330

1330

1330

x

1330

1330

1330

1330

1335

1330

x

2110

2145

2235

2110

2115

2245

2350

2315

2315

2395

2335

2265

2305

2480

2555

2455

2495

2655

2425

2475

2560

2685

2535

2565

2785

2585

2605

2790

2070

1880

1970

2220

1900

2030

x

2095

2010

2070

2320

2120

2010

x

2540

2250

2170

2660

2280

2180

x

2550

2450

2240

2675

2580

2305

x

820

820

820

820

820

820

820

820

820

820

820

820

820

820

1070

1070

1070

1070

1070

1070

1070

1070

1070

1070

1070

1070

1070

1070




x: On request

* Related to 75 °C



55/17

GEAFOL Cast-Resin Dry-Type Transformers

Standards and regulations

GEAFOL cast-resin dry-typetransformers comply with IEC 60076-11, CENELEC HD 464, HD 538 and DIN 42523.

Advantages and applications

GEAFOL distribution and powertransformers in ratings from 100 toapprox. 40,000 kVA and LI values ofover 200 kV are full substitutes foroil-immersed transformers with com-parable electrical and mechanicaldata.

GEAFOL transformers are designedfor indoor installation close to theirpoint of use, which is often at theload center. Flame-retardant inorganic

insulating materials are used through-out, so that all restrictions applying to oil-filled electrical equipment, such as oil-collecting pits, fire walls,fire-extinguishing equipment, etc.,are omitted.

LV terminals

Normal arrangement: Top or,Bottom at LV side. Special version: available on request at extra charge

HV terminals

Variable arrangements, foroptimal station design. HVtapping links on low-voltageside for adjustment to systemconditions, reconnectable inde-energized state

Cross-flow fans

Permitting up to 50% increasein the rated power

Temperature monitoring

By PTC thermistor detectorsin the LV winding

Paint finish on steel parts

Multiple coating, RAL 5009.On request: Two-componentvarnish or hot-dip galvanizing(for particularly aggressiveenvironments)

Environmental category E2

Climatic category C2

(If the transformer is installedoutdoors, degree of protectionIP 23 must be assured)

Fire class F1

Three-leg core

Made of grain-oriented,low-loss electrolaminationsinsulated on both sides

Resilient spacers

To insulate core andwindings from mechanicalvibrations, resulting in lownoise emissions

HV winding

Consisting of vacuum-pottedsingle foil-type aluminumcoils. See enlarged detail inFig. 5/5

LV winding

Made of aluminum band.Turns firmly glued togetherby means of insulatingsheet wrapper material

Insulation: Mixture ofepoxy resin and quartzpowder

Makes the transformermaintenance-free, moisture-proof, tropicalized,flame-resistant and self-extinguishing

Clamping frame and truck

Rollers can be swungaround for lengthways orsideways travel

Fig. 5/4 GEAFOL cast-resin dry-type transformer

Transformers



GEAFOL transformers are also in-stalled where oil-filled transformersmust not be used: inside buildings, intunnels, on ships, on offshore cranesand platforms, in wind power sta-tions, in groundwater protection ar-eas, in food processing plants etc.Often they are combined with theirprimary and secondary switchgearand distribution boards into compactsubstations that are installed directlyat their point of use. As con-verter transformers forvariable-speed drivesthey can be installedtogether with the con-verters at the drive location. This re-duces civil works, cable costs, trans-mission losses, and installation costs.GEAFOL transformers are fully LI-rated. They have similar noise levelsto comparable oil-filled transformers.Taking the above indirect cost reduc-tions into account, they are also fre-quently cost-competitive.

By virtue of their design, GEAFOLtransformers are almost completelymaintenance-free for their lifetime.

GEAFOL transformers have been insuccessful service since 1965. A lotof licences have been granted to ma-jor manufacturers throughout theworld since.

1

8

8

223344

56

6

7

7U

U

1 2 3 4 5 6 7

2 3 4 5 6 7 8

1

2

3

4

8

7

6

5

2 4 6 8

1 3 5 7

Runddrahtwicklung

Folienwicklung

Fig. 5/5 High-voltage encapsulated winding design of GEAFOL cast-resin transformer and voltage stress of a conventional round-wire winding (above) and the foil winding (below)


55/19

HV winding

The high-voltage windings are woundfrom aluminum foil, interleaved withhigh-grade polypropylene insulatingfoil. The assembled and connectedindividual coils are placed in a heatedmold, and are potted in a vacuum furnace with a mixture of pure silica(quartz sand) and specially blendedepoxy resins. The only connectionsto the outside are copper bushings,which are internally bonded to thealuminum winding connections.

The external star or delta connectionsare made of insulated copper connec-tors to ensure an optimal installationdesign. The resulting high-voltagewindings are fire-resistant, moisture-proof, corrosion-proof, and show ex-cellent ageing properties under all in-door operating conditions. For out-door use, specially designedsheet-metal enclosures are available.

The foil windings combine a simplewinding technique with a high degreeof electrical safety. The insulation issubjected to less electrical stressthan in other types of windings. In aconventional round-wire winding, theinterturn voltage can add up to twicethe interlayer voltage, while in a foilwinding it never exceeds the voltageper turn because a layer consists ofonly one winding turn. Result: a highAC voltage and impulse-voltage with-stand capacity.

Why aluminum? The thermal expan-sion coefficients of aluminum andcast-resin are so similar that thermalstresses resulting from load changesare kept to a minimum (see Fig. 5/5).

LV winding

The standard low-voltage windingwith its considerably reduced dielec-tric stress is wound from single alu-minum sheets with interleaved cast-resin impregnated fiberglass fabric.

The assembled coils are then oven-cured to form uniformly bonded solidcylinders that are impervious to mois-ture. Through the single-sheet wind-ing design, excellent dynamic stabil-ity under short-circuit conditions isachieved. Connections are sub-merged-arc-welded to the aluminumsheets and are extended as alu-minum busbars to the secondary ter-minals.

Fire safety

GEAFOL transformers use onlyflame-retardant and self-extinguishingmaterials in their construction. No ad-ditional substances, such as alu-minum oxide trihydrate, which couldnegatively influence the mechanicalstability of the cast-resin molding material, are used. Internal arcingfrom electrical faults and externallyapplied flames do not cause thetransformers to burst or burn. Afterthe source of ignition is removed, thetransformer is self-extinguishing.

This design has been approved byfire safety officers in many countriesfor installation in buildings wherepeople are generally present and inother areas.

The environmental safety of the com-bustion residues has been proven inmany tests.

Categorization of cast-resin trans-formers

Dry-type transformers have to be cat-egorized under the sections listedbelow:C Environmental categoryC Climatic categoryC Fire category

These categories have to be shownon the rating plate of each dry-typetransformer.

Product conformity to the propertieslaid down in the standards for ratingswithin the approximate categoryrelating to environment, humidity,climate and fire behavior has to beproven by means of tests.

These tests are described for the en-vironmental category (code numberE0, E1 and E2) and for the climaticcategory (code number C1, C2) inDIN VDE 0532, Part 6 (correspondingto HD 464). According to this stan-dard, they are to be carried out oncomplete transformers.

The tests of fire behavior (fire classcode numbers F0 and F1) are limitedto tests on a duplication of a com-plete transformer. It consists of a core leg, a low-voltage winding anda high-voltage winding. The specifica-tions for fire class F2 are determinedby agreement between the manufac-turer and the customer.

Transformers



Siemens has carried out a lot oftests.

The results for our GEAFOL trans-formers are something to be proudof:C Environmental category E2C Climatic category C2C Fire class F1

This good behavior is solely due tothe GEAFOL cast-resin mix whichhas been used successfully fordecades.

Insulation class and temperaturerise

The high-voltage winding and thelow-voltage winding utilise class Finsulating materials with a mean tem-perature rise of 100 K (standard de-sign).

Overload capability

GEAFOL transformers can be over-loaded permanently up to 50% (witha corresponding increase in imped-ance voltage and impedance losses)if additional cross-flow fans are in-stalled. (Dimensions increase by approximately 200 mm in length andwidth.) Short-time overloads are un-critical as long as the maximum wind-

ing temperatures are not exceededfor extended periods of time.

Temperature monitoring

Each GEAFOL transformer is fittedwith three temperature sensorswhich are installed in the LV winding.Solid-state tripping devices can besupplied separately on order. ThePTC thermistors used for sensing areselected for the hot-spot windingtemperature. Additional sets of sen-sors can be installed for them and forfan control purposes. Additional dial-type thermometers and Pt100 areavailable too. Special versions can beprovided for 3.6 kV operating volt-ages of the LV winding and higher.

Auxiliary wiring is run in a protectiveconduit and terminated in a centralLV terminal box (optional). Each wireand terminal is identified and a wiringdiagram is permanently attached tothe inside cover of this terminal box.

Installation and enclosures

Indoor installation in electrical operat-ing rooms or in various protective en-closures is the preferred method ofinstallation. The transformers need tobe protected against direct sunlight,sandstorms and against water. Suffi-cient ventilation must be provided bythe installation location or the enclo-sure. Otherwise forced-air coolingmust be provided by other equip-ment.

Photo 5/13 Flammability test of cast-resin transformer


55/21

Instead of the standard open termi-nals, insulated plug-type elbow con-nectors can be supplied for the high-voltage side with LI ratings up to 170 kV. Primary cables are usuallyfed to the transformer from trenchesbelow, but can also be connectedfrom above.

Secondary connections can be madeby multiple insulated cables or bybusbars, from either below or above.Secondary terminals are aluminumflat pad connections with bores.

A variety of indoor and outdoor enclo-sures in different safety classes areavailable for the transformers alone,or for indoor compact substations inconjunction with high- and low-volt-age switchgear cabinets.

Recycling of GEAFOL transformers

In GEAFOL cast-resin transformertypes, the high-voltage and low-volt-age coils form firm tubes owing toelectrical and mechanical advantagesand production-specific requirements.In order to recycle these valuable ma-terials, these parts can normally beremoved and post-processed with little effort, once the upper clampingstructure has been dismantled andthe top core yoke has been pulledout. It is common practice to recyclethe main mass portions consisting ofiron core, frame and truck.

Photo 5/14 GEAFOL transformer with plug-type cable connections

Photo 5/15 Radial cooling fans on GEAFOL transformer for AF cooling

Photo 5/16 GEAFOL transformer in protectivehousing to IP 20/40

Transformers



GEAFOL Cast-ResinSelection Tables,TechnicalData, Dimensions andWeights

Standard DIN 42 523

Rated power 100–20,000 kVA*

Rated frequency 50 Hz

HV rating up to 36 kV

LV rating up to 780 V(special designs for up to 20 kV are possible)

Tappings on HV side ± 2.5 % or 2 x ± 2.5 %

Connection HV winding: deltaLV winding: star

Impedance voltage at rated 4– 8 % current

Insulation class HV/LV = F /F

Temperature rise HV/LV = 100/100 K

Color of metal parts RAL 5009

Um Lightning impulse test voltage AC test voltagekV kV kV

1.1 – 3

12 75 28

24 95** 50

36 145** 70

H1

2U 2V 2W

A1EB1

2N

Table 5/11 GEAFOL three-phase transformers

Table 5/12 Insulation level

Fig. 5/6 GEAFOL cast-resin transformer* Power ratings > 2.5 MVA upon request** Other levels upon request


Rated

power

Sn

kVA

Max.

rated

voltage

HV side

Um

kV

Imped-

ance

voltage

Uz

%

No-load

losses

P0

W

Load

losses

Pk 75*

W

Load

losses

Pk 120**

W

Sound

pressure

level 1 m

tolerance

+ 3 dB

LPA

dB

Sound

power

level

LWA

dB

Total

weight

GGES

kg

Roller-

to-roller

distance

(centers)

E

mm

Dimensions

Length Width Height

A1 B1 H1

mm mm mm

Type

4GB..

100

160

250

12

24

12

24

12

24

36

4

4

6

6

4

4

6

6

4

4

6

6

4

4

6

6

4

4

6

6

4

4

6

6

6

.5044-3CA

.5044-3GA

.5044-3DA

.5044-3HA

.5064-3CA

.5064-3GA

.5064-3DA

.5064-3HA

.5244-3CA

.5244-3GA

.5244-3DA

.5244-3HA

.5264-3CA

.5264-3GA

.5264-3DA

.5264-3HA

.5444-3CA

.5444-3GA

.5444-3DA

.5444-3HA

.5464-3CA

.5464-3GA

.5464-3DA

.5464-3HA

.5475-3DA

440

320

360

300

600

400

420

330

610

440

500

400

800

580

600

480

820

600

700

570

1050

800

880

650

1300

1600

1600

2000

2000

1500

1500

1800

1800

2300

2300

2300

2300

2200

2200

2500

2500

3000

3000

2900

2900

2900

2900

3100

3100

3800

1900

1900

2300

2300

1750

1750

2050

2050

2600

2600

2700

2700

2500

2500

2900

2900

3500

3400

3300

3300

3300

3300

3600

3600

4370

45

37

45

37

45

37

45

37

47

39

47

39

47

39

47

39

50

42

50

42

50

41

50

41

50

59

51

59

51

59

51

59

51

62

54

62

54

62

54

62

54

65

57

65

57

65

57

65

57

65

630

760

590

660

750

830

660

770

770

920

750

850

910

940

820

900

1040

1170

990

1120

1190

1230

990

1180

1700

1210

1230

1190

1230

1310

1300

1250

1300

1220

1290

1270

1300

1330

1310

1310

1350

1330

1330

1350

1390

1390

1400

1360

1430

1900

705

710

705

710

755

755

750

755

710

720

720

725

725

720

725

765

730

730

740

745

735

735

735

745

900

835

890

860

855

935

940

915

930

1040

1050

990

985

1090

1095

1075

1060

1110

1135

1065

1090

1120

1150

1140

1160

1350

without wheels

without wheels

without wheels

without wheels

without wheels

without wheels

without wheels

without wheels

520

520

520

520

520

520

520

520

520

520

520

520

520

520

520

520

520

55/23

Dimensions and weights are approximate values, valid for 400 V at the secondary side. The vector group is either Dyn 5 or Dyn 11. Power ratings in parentheses are not standardized.

* Related to 75 °C** Related to 120 °C

Table 5/13 GEAFOL cast-resin transformer for 100 to 2,500 kVA

Transformers


Rated

power

Sn

kVA

Max.

rated

voltage

HV side

Um

kV

Imped-

ance

voltage

Uz

%

No-load

losses

P0

W

Load

losses

Pk 75*

W

Load

losses

Pk 120**

W

Sound

pressure

level 1 m

tolerance

+ 3 dB

LPA

dB

Sound

power

level

LWA

dB

Total

weight

GGES

kg

Roller-

to-roller

distance

(centers)

E

mm

Dimensions

Length Width Height

A1 B1 H1

mm mm mm

Type

4GB..

(315)

400

(500)

12

24

36

12

24

36

12

24

36

4

4

6

6

4

4

6

6

6

4

4

6

6

4

4

6

6

6

4

4

6

6

4

4

6

6

6

.5544-3CA

.5544-3GA

.5544-3DA

.5544-3HA

.5564-3CA

.5564-3GA

.5564-3DA

.5564-3HA

.5575-3DA

.5644-3CA

.5644-3GA

.5644-3DA

.5644-3HA

.5664-3CA

.5664-3GA

.5664-3DA

.5664-3HA

.5675-3DA

.5744-3CA

.5744-3GA

.5744-3DA

.5744-3HA

.5764-3CA

.5764-3GA

.5764-3DA

.5764-3HA

.5775-3DA

980

720

850

680

1250

930

1000

780

1450

1150

880

1000

820

1450

1100

1200

940

1700

1350

1000

1200

980

1700

1270

1400

1100

1900

3300

3300

3400

3400

3400

3400

3600

3600

4500

4300

4300

4300

4300

3900

3900

4100

4100

5100

4900

4900

5600

5600

4800

4800

5000

5000

6000

3800

3800

3900

3900

3900

3900

4100

4100

5170

4900

4900

4900

4900

4500

4500

4700

4700

5860

5600

5600

6400

6400

5500

5500

5700

5700

6900

52

43

51

43

51

43

51

43

51

52

44

52

44

52

44

52

44

52

53

45

53

45

53

44

53

45

53

67

59

67

59

67

59

67

59

67

68

60

68

60

68

60

68

60

68

69

61

69

61

69

61

69

61

69

1160

1320

1150

1290

1250

1400

1190

1300

1900

1310

1430

1250

1350

1410

1570

1350

1460

2100

1520

1740

1470

1620

1620

1830

1580

1720

2600

1370

1380

1380

1410

1410

1440

1410

1460

1950

1380

1380

1410

1430

1440

1460

1480

1480

2000

1410

1450

1460

1490

1500

1540

1540

1560

2050

820

820

830

830

820

825

825

830

920

820

820

825

830

825

830

835

835

920

830

835

845

845

835

840

850

850

940

1125

1195

1140

1165

1195

1205

1185

1195

1400

1265

1290

1195

1195

1280

1280

1275

1280

1440

1320

1345

1275

1290

1330

1350

1305

1320

1500

670

670

670

670

670

670

670

670

670

670

670

670

670

670

670

670

670

670

670

670

670

670

670

670

670

670

670






Rated

power

Sn

kVA

Max.

rated

voltage

HV side

Um

kV

Imped-

ance

voltage

Uz

%

No-load

losses

P0

W

Load

losses

Pk 75*

W

Load

losses

Pk 120**

W

Sound

pressure

level 1 m

tolerance

+ 3 dB

LPA

dB

Sound

power

level

LWA

dB

Total

weight

GGES

kg

Roller-

to-roller

distance

(centers)

E

mm

Dimensions

Length Width Height

A1 B1 H1

mm mm mm

Type

4GB..

630

(800)

1000

12

24

36

12

24

36

12

24

36

4

4

6

6

4

4

6

6

6

4

4

6

6

4

4

6

6

6

4

4

6

6

4

4

6

6

6

.5844-3CA

.5844-3GA

.5844-3DA

.5844-3HA

.5864-3CA

.5864-3GA

.5864-3DA

.5864-3HA

.5875-3DA

.5944-3CA

.5944-3GA

.5944-3DA

.5944-3HA

.5964-3CA

.5964-3GA

.5964-3DA

.5964-3HA

.5975-3DA

.6044-3CA

.6044-3GA

.6044-3DA

.6044-3HA

.6064-3CA

.6064-3GA

.6064-3DA

.6064-3HA

.6075-3DA

1500

1150

1370

1150

1950

1500

1650

1250

2200

1850

1450

1700

1350

2100

1600

1900

1450

2600

2200

1650

2000

1500

2400

1850

2300

1750

3000

6400

6400

6400

6400

6000

6000

6400

6400

7000

7800

7800

7600

7600

7500

7500

7900

7900

8200

2200

1650

2000

1500

2400

1850

2300

1750

3000

7300

7300

7400

7400

6900

6900

7300

7300

8000

9000

9000

8700

8700

8600

8600

9100

9100

9400

10200

10200

9700

9700

10000

10000

10500

11000

10900

54

45

54

45

53

45

53

45

53

55

47

55

47

55

47

55

47

55

55

47

56

47

55

47

55

47

55

70

62

70

62

70

62

70

62

70

72

64

72

64

72

64

71

64

72

73

65

73

65

73

65

73

65

73

1830

2070

1770

1990

1860

2100

1810

2050

2900

2080

2430

2060

2330

2150

2550

2110

2390

3300

2480

2850

2420

2750

2570

3060

2510

2910

3900

1510

1470

1550

1590

1550

1600

1580

1620

2070

1570

1590

1560

1600

1610

1650

1610

1630

2140

1590

1620

1620

1660

1660

1680

1680

1730

2200

840

835

860

865

845

850

855

860

940

850

855

865

870

845

855

860

865

950

990

990

990

990

990

990

990

990

1050

1345

1505

1295

1310

1380

1400

1345

1370

1650

1560

1640

1490

1530

1580

1620

1590

1595

1850

1775

1795

1560

1560

1730

1815

1620

1645

1900

670

670

670

670

670

670

670

670

670

670

670

670

670

670

670

670

670

670

820

820

820

820

820

820

820

820

820

55/25




Transformers


Rated

power

Sn

kVA

Max.

rated

voltage

HV side

Um

kV

Imped-

ance

voltage

Uz

%

No-load

losses

P0

W

Load

losses

Pk 75*

W

Load

losses

Pk 120**

W

Sound

pressure

level 1 m

tolerance

+ 3 dB

LPA

dB

Sound

power

level

LWA

dB

Total

weight

GGES

kg

Roller-

to-roller

distance

(centers)

E

mm

Dimensions

Length Width Height

A1 B1 H1

mm mm mm

Type

4GB..

(1250)

1600

(2000)

2500

12

24

36

12

24

36

12

24

36

12

24

36

6

6

6

6

6

6

6

6

6

6

6

6

6

6

6

6

6

6

6

6

.6144-3DA

.6144-3HA

.6164-3DA

.6164-3HA

.6175-3DA

.6244-3DA

.6244-3HA

.6264-3DA

.6264-3HA

.6275-3DA

.6344-3DA

.6344-3HA

.6364-3DA

.6364-3HA

.6375-3DA

.6444-3DA

.6444-3HA

.6464-3DA

.6464-3HA

.6475-3DA

2400

1850

2700

2100

3500

2800

2100

3100

2400

4300

3600

2650

4000

3000

5100

4300

3000

5000

3600

6400

9600

10500

10000

10500

11000

11000

11400

11800

12300

12700

14000

14500

14500

14900

15400

17600

18400

17600

18000

18700

11000

12000

11500

12000

12600

12500

13000

13500

14000

14600

16000

16500

16500

17000

17700

20000

21000

20000

20500

21500

57

49

57

49

57

58

50

58

49

58

59

51

59

51

59

62

51

61

51

61

75

67

75

67

75

76

68

76

68

76

78

70

78

70

78

81

71

81

71

81

2900

3370

3020

3490

4500

3550

4170

3640

4080

5600

4380

5140

4410

4920

6300

5130

6230

5280

6220

7900

1780

1790

1820

1850

2300

1840

1880

1880

1900

2500

1950

1990

2020

2040

2500

2110

2170

2170

2220

2700

990

990

990

990

1060

995

1005

995

1005

1100

1280

1280

1280

1280

1280

1280

1280

1280

1280

1280

1605

1705

1635

1675

2000

2025

2065

2035

2035

2400

2150

2205

2160

2180

2400

2150

2205

2160

2180

2400

820

820

820

820

520

1070

1070

1070

1070

1070

1070

1070

1070

1070

1070

1070

1070

1070

1070

1070






55/27

Transformers


6.1 Low-Voltage Switchgear and Distribution Systems

6.2 Protective Switching Devices and Fuse Systems

6.3 Modular Devices

6.4 Maximum-Demand Monitors

6.5 Switches, Outlets and Electronic

Products

6.6 SIMOCODE pro – Motor Management Systems for Constant-Speed Motors in the Low-Voltage Range

6 Low Voltage

TIP_Kap06_Engl 11.08.2005 19:30 Uhr Seite B2

siemens transformers

Documents

parameters remain identical

total weight length

totally integrated power

partial discharge test

float buchholz relay

fire class f1

dimensions width height

standard temperature conditions