Power Transmission & Distribution

Technical Performance

Cast Resin TransformersOil Immersed Transformer

Applications 6

Feature 7

Construction 8

Specification 9

Technical Data (ANSI Standard) 11

Technical Data (IEC Standard) 13

Manufacturing Process 15

Quality Assurance 16

Ordering Sheet 17

Cast Resin Transformers

LS Transformer

Contents

50kVA Through 15,000kVAPrimary Voltage: 2.3kV Through 36kV

Secondary Voltage: 120V Through 24kV

4ＩＩ

IntroductionGreat progress has been made in the development and improvement of

distribution transformers over the last decades.

The application of high quality insulation material and suitable selection of the coil

structure for high stress have contribute to the development of LS CAST RESIN

Transformers.

The LS CAST RESIN Transformer has succeeded in combining the advantage

of oil-filled and conventional dry type transformers, which are fabricated with an

epoxy resin. The windings are completely embeded under vacuum conditions.

This casting method makes it possible to assure void-free epoxy penetration of

both the inner layer and turn to turn insulation.

ＩＩ5

LV TERMINAL

LIFTING LUG

FRAME

CORE

SPACER

HV TERMINAL

HV COIL

NO VOLT. TAP CHANGER

INTERPHASE LEAD

BED FRAME

LV COIL

6ＩＩ

Applications

LS CAST RESIN Transformers canbe used in various fields.Here are just a few possibleapplications.

● Indoor and outdoor unit substations●Off-shore flatforms● Commercial buildings● Hospitals● Shopping centers●Water supplies● Traction systems● SCR Power supplies

ＩＩ7

Cast Resin TransformersFeatures

LS CAST RESIN Transformers will not emit oil or toxic

gases into the atmosphere. Therefore, they do not pollute

the environment and are strongly recommended as a

replacement for askarel(PCB)-filled transformers.

Highfrequencygenerator

Filter

P.T

Chopping switch Input transformer Detertors

Coupling Capacitors

V

Environmentally safe

Based on the high thermal time constant factor of the

windings, LS CAST RESIN Transformers can be overloaded

for a short duration considerably higher than oil-immersed

transformers. It has a greater capability to withstand sudden

high overloads such as might be encountered in heavy

traction applications.

High overload capability

LS CAST RESIN Transformers are very resistant to impulse

voltage.

Impulse withstand levels to 200kV are available because of

careful design and special structure.

High impulse strength

Maintenance is almost completely eleminated. No checking

of liquid level and no dielectric test for moisture absorption is

required.

Due to the smooth coil surface, heavy dirt and dust build up

is eleminated even under the worst circumstances.

The recommended routine maintenance is an occasional

visual inspection.

Maintenance free

LS CAST RESIN Transformers have a very excellent

characteristic of self fire-extinguishing and fire resistance.

So there would be no fear of spread of fire even if fire took

place around the electricity room.

Fire resistant

The complete casting of coils under vacuum prevents the

penetration of moisture into the winding.

Therefore, it is suitable for both storage and operation in

harsh environment and is capable of being switched on

immediately after such storage without pre-drying.

Moisture proof

There is no possibility of partial discharge in LS CAST

RESIN Transformers.

Whole core & coil is tested to guarantee the life expectancy

of the insulation system.

LS CAST RESIN Transformers are free of partial discharge

at least up to 1.2 times of the rated voltage.

No partial discharge

The coating of the core with an epoxy resin have lead to an

appreciable noise reduction. Noise is also reduced due to

the sound suppresing effect of the step lap cutting.

Low noise

8ＩＩ

Construction

LS CAST RESIN Transformers take pride in the ability to offer a wide variety of designs and configurationsnecessary to satisfy customer needs. Computer and CAD/CAM systems are used for quick and accurate designand manufacture to meet specific customer requirements.

The core is made of highest quality, cold rolled, grain-oriented, silicon steel and step lap joint. Three legs of the core are arranged in a single plane andinterconnected with a yoke. The legs are circular structure and are carefully interlacedwith stepwise arranged yokes. The core is mitred at a 45 degree angle and care-fully stackedand pressed to obtain low loss, exciting current and noise. The core is insulated on both side of each lamination andprotected against corrision by a resin coating and groundedin frame.The frame consists of upper and lower steel channels. Itholds the core and coil together. To protect against corrosion, all steel parts are coated withepoxy paint.

CORE & FRAME

●● HV COIL (Vacuum Cast type)- HV COIL Vacuum Cast inepoxy with a mold.

- Copper/Aluminum wireconductor.

●● LV COIL (Encapsulated Cast type)- standard- LV COIL Encapsulat- edafter winding with prepreglayer insu-lation.

- Copper/Aluminum sheetconductor.

●● LV COIL (Vacuum Cast type)- optional- LV COIL Vacuum Cast inepoxy with a mold.

- Copper/Aluminum wire orsheet con- ductor.

Rectangular or round wire insulated with a high grade isused in the winding construction.Turns are arranged in multiple sections and layers in orderto decrease transient maximum voltages. High voltagewindings are cast in a mold under vacuum, using acomputer controlled mixing and vacuum casting process. So there is no void in the coils. The windings are fiberglassreinforced to provide additional mechanical strength. After assembly, all HV coils are partial dischage tested toverify void free in the coils.

HV & LV Coils

5 STEP LAP CORE

CORE STACKING

CORE ASSEMBLY

ＩＩ9

Cast Resin TransformersSpecification

LS CAST RESIN Transformers are normally available withspecification as follows:

●● Rated voltageHV COIL : up to 36kVLV COIL : up to 600V* Dual High voltage coils can also be supplied.

●● Standard Tapping range : ±2.5%, ±5%* Other ratings are available by request

●● Power capacitySingle phase : 20 ~ 2,000kVAThree phase : 50 ~ 15,000kVA

●● Frequency : 50Hz, 60Hz* Other frequency is available by request

●●% Impedance voltageANSI STD. : 5.75%IEC STD. : 4 ~ 6.00%* Other % impedance voltages are available.

●● ConnectionsHV COIL : DeltaLV COIL : Star with neutral point* Other connections are available to meet requirement.

●● Temperature class(According to IEC 726)HV COIL and LV COIL : F CLASS* H class coils are available by request.

●● ConductorCopper (standard)Aluminum (optional)

●● Noise Level(according to NEMA Std.)500kVA - 60dB750kVA - 64dB1000kVA - 64dB1500kVA - 65dB2000kVA - 66dB2500kVA - 68dB*Noise reduction TRs are available by request.

Specification Data

LS CAST RESIN Transformers confirm to the requirementsof IEC 726(1982) standards.However we can also meet the requirements of the followingstandards, upon request.

●● ANSI / IEEE C57.12.01 (1998)General requirement for dry-type distribution and powertransformers.

●● CSA Standard C9-M1981Dry type transformers.

●● HD538.1,2,3(1995)3 Phase Dry type distribution transformers. 50Hz from 100kVA to 2500kVA

●● BS 7806 (1995)Dry type Power transformers

●● AS 2374 (1982)Power transformers* Transformers for rectifier applications and other special purposes

can be supplied according to the client’s specification.

Standards

Certificates

10ＩＩ

Specification

●● Normally provided accessories∙HV & LV terminals∙Lifting lugs∙Grounding terminals∙Name plate∙Danger label∙Tap terminal link∙Protection cap for tap terminal∙Anti-vibration pads

●● Optional accessories∙Dial type thermometer∙Wheels∙Cooling fan & temp. controller∙Digital thermometer & PT 100 OHM

(1 Phase)∙Digital thermometer & PT 100 OHM

(3 Phase)∙Enclosure

AccessoriesHV terminals LV terminals

Lifting lugs Grounding terminals

Danger label Tap terminal link

Protection cap Anti-vibration pads

Wheels Cooling fan

Temperature controller Temperature indicator

ＩＩ11

Cast Resin TransformersTechnical Data (ANSI Standard)

x3x0 x2 x1

H3 H2 H1

W

D

2221 23

1211 13

2221 23

1211 13

2221 23

1211 13

x3 x2 x1

H3 H2 H1

ANSI / IEEE C 57.12.0180K TEMP.RISE, 60Hz5kV CLASS, 75kV BIL

SGCE- : ENCAPSULATION TYPE IN LV COILSGCC- : VACUUM CAST TYPE IN LV COIL

CAPACITYTYPE

%IZ NL-L L-L EFFICIENCY (%) DIMENSION (mm) WEIGHT

(kVA) (%) (W) (W) 100% LOAD 75% LOAD 50% LOAD W D H (kg)

500 SGCE-500/5 5.75 1450 4871 98.75 98.89 98.94 1355 750 1350 2100

500 SGCC-500/5 5.75 1450 4900 98.74 98.89 98.94 1355 750 1350 2200

750 SGCE-750/5 5.75 2000 5874 98.96 99.06 99.08 1515 750 1350 2750

750 SGCC-750/5 5.75 2000 6172 98.92 99.03 99.06 1515 750 1385 2800

1000 SGCE-1000/5 5.75 2470 7085 99.05 99.14 99.15 1580 950 1485 3350

1000 SGCC-1000/5 5.75 2470 7077 99.05 99.14 99.15 1580 950 1505 3400

1500 SGCE-1500/5 5.75 3400 10694 99.06 99.17 99.19 1760 950 1725 4570

1500 SGCC-1500/5 5.75 3400 11355 99.02 99.13 99.17 1760 950 1745 4600

2000 SGCE-2000/5 5.75 4600 12090 99.17 99.24 99.24 1935 950 1755 5750

2000 SGCC-2000/5 5.75 4650 12275 99.16 99.23 99.23 1935 950 1775 5800

2500 SGCE-2500/5 5.75 5400 14450 99.21 99.28 99.28 1935 1020 1915 6560

2500 SGCC-2500/5 5.75 5609 15223 99.17 99.24 99.25 1935 1020 1935 6600

* Other kVA is available according to request.

12ＩＩ

Technical Data (ANSI Standard)

ANSI / IEEE C 57.12.0180K TEMP.RISE, 60Hz15kV CLASS, 110kV BIL

SGCE- : ENCAPSULATION TYPE IN LV COILSGCC- : VACUUM CAST TYPE IN LV COIL

CAPACITYTYPE

%IZ NL-L L-L EFFICIENCY (%) DIMENSION (mm) WEIGHT

(kVA) (%) (W) (W) 100% LOAD 75% LOAD 50% LOAD W D H (kg)

500 SGCE-500/15 5.75 1810 5610 98.53 98.69 98.73 1545 750 1425 2145

500 SGCC-500/15 5.75 1840 5610 98.53 98.68 98.71 1545 750 1445 2145

750 SGCE-750/15 5.75 2330 6630 98.81 98.93 98.94 1610 750 1535 2745

750 SGCC-750/15 5.75 2360 6630 98.81 98.92 98.94 1610 750 1555 2745

1000 SGCE-1000/15 5.75 2800 7480 98.98 99.07 99.07 1650 950 1665 3395

1000 SGCC-1000/15 5.75 2830 7490 98.97 99.06 99.06 1680 950 1685 3395

1500 SGCE-1500/15 5.75 3800 8880 99.16 99.22 99.20 1790 950 1745 4385

1500 SGCC-1500/15 5.75 3860 9130 99.14 99.20 99.18 1800 950 1795 4380

2000 SGCE-2000/15 5.75 4870 13050 99.11 99.19 99.19 1965 950 1875 5340

2000 SGCC-2000/15 5.75 4920 13900 99.06 99.15 99.16 1965 950 1905 5340

2500 SGCE-2500/15 5.75 5650 15210 99.17 99.24 99.24 1965 1020 1985 6600

2500 SGCC-2500/15 5.75 6240 14140 99.19 99.24 99.22 2070 1020 1965 6600

* Other kVA is available according to request.

x3x0 x2 x1

H3 H2 H1

W

D

2221 23

1211 13

2221 23

1211 13

2221 23

1211 13

x3 x2 x1

H3 H2 H1

ＩＩ13

Cast Resin TransformersTechnical Data (IEC Standard)

CAPACITYTYPE

%IZ NL-L L-L EFFICIENCY (%) DIMENSION (mm) WEIGHT

(kVA) (%) (W) (W) 100% LOAD 75% LOAD 50% LOAD W D H (kg)

500 SGC-500/12 6.00 1220 6536 98.5 98.7 98.9 1355 750 1355 1788

630 SGC-630/12 6.00 1420 7502 98.6 98.8 99.0 1415 750 1445 2160

800 SGC-800/12 6.00 1780 8194 98.8 98.9 99.1 1515 950 1475 2670

1000 SGC-1000/12 6.00 2035 8958 98.9 99.1 99.2 1515 950 1535 2945

1250 SGC-1250/12 6.00 2450 9819 99.0 99.2 99.2 1620 1020 1565 3476

1600 SGC-1600/12 6.00 2768 11741 99.1 99.2 99.3 1620 1020 1675 4067

2000 SGC-2000/12 6.00 3358 16752 99.0 99.2 99.3 1760 1020 1905 4962

2500 SGC-2500/12 6.00 4260 19381 99.1 99.2 99.3 1875 1020 2045 6019

IEC 60726100K TEMP.RISE, 50Hz12kV CLASS, 75kV BIL

* Other kVA is available according to request.

o w v u

W

WV U

D

VW U

w v u

2221 23

1211 13

2221 23

1211 13

2221 23

1211 13

SGC- : Encapsulation type in LV coil

14ＩＩ

Technical Data (IEC Standard)

CAPACITYTYPE

%IZ NL-L L-L EFFICIENCY (%) DIMENSION (mm) WEIGHT

(kVA) (%) (W) (W) 100% LOAD 75% LOAD 50% LOAD W D H (kg)

500 SGC-500/24 6.00 1500 6700 98.4 98.6 98.7 1565 750 1525 2100

630 SGC-630/24 6.00 1800 8500 98.4 98.6 98.8 1565 750 1605 2300

800 SGC-800/24 6.00 2100 9800 98.5 98.7 98.9 1670 750 1635 2700

1000 SGC-1000/24 6.00 2400 11100 98.7 98.9 99.0 1700 950 1765 3150

1250 SGC-1250/24 6.00 2700 12000 98.8 99.0 99.1 1810 950 1765 3800

1600 SGC-1600/24 6.00 3450 15500 98.8 99.0 99.1 1985 1020 1875 5550

2000 SGC-2000/24 6.00 4200 16400 99.0 99.1 99.2 1985 1020 1955 6150

2500 SGC-2500/24 6.00 5250 19000 99.0 99.2 99.2 2095 1020 2015 7250

IEC 60726100K TEMP.RISE, 50Hz24kV CLASS,125kV BIL

* Other kVA is available according to request.

o w v u

W

WV U

D

VW U

w v u

2221 23

1211 13

2221 23

1211 13

2221 23

1211 13

SGC- : Encapsulation type in LV coil

ＩＩ15

Cast Resin TransformersMaunfacturing Process

CORE CUTTING HV WINDING

CORE STACKING CASTING

ASSEMBLY

TEST

the following tests are made on all transformer.

●● Resistance measurements●● Ratio tests●● Polarity and phase relation test●● Impedance and load loss●● No load loss and exciting current●● Applied potential tests●● Double induced potential tests●● Partial diacharge test(below 10 PC)

Routine Test

●● Impulse test

●● Temperature testTemperature rise test carried out according to the simulated loading method. - no load losses- load lossesThe total temperature rise is calculated in accordance with IEC726 or ANSI

●● Short circuit test∙3P 1600kVA Certified by KEMA

●● Audible sound level test∙test by IEC 551∙LS use Pressure Level (Lp).Lw(A) = Lp(A) + 10 LOG SS = 1.25 X H X PH : Transformer heightP : Measurement contour perimeter

●● Fire Behavior testThe fire behaviour test of the LS CAST coils is made up of tests on material and a test F1 according to the HD 464 S1

●● Heat Cycle test

●● Condensation and humidity testLS transformer was immersed in salted water at room ambient temperature for a period of 24 hours. Within the 5 minutes of removal fromthe water, LS transformer was subjected to an induced voltage test at 1.1Um it’s rated voltagefor 15 minutes. No flash occurred.

Optional Test

16ＩＩ

Quality Assurance

ROUTINE TEST

IMPULSE TEST

SHORT CIRCUIT TEST

CONDENSATION and HUMIDITY TEST

ＩＩ17

Cast Resin TransformersInquiries or order information Sheet

Ref. No. :

Date. :

End User and Location :

Rated kVA

Q’ty (sets)

Rated Voltage(V)Primary(V)

Secondary(V)

ConnectionPrimary

Secondary

Phase (ф)

% Impedance (%)

ITEM TR.-1 TR.-2 TR.-3 TR.-4

1. Frequency � 50Hz � 60Hz � Other

2. Conductor �Maker Standard � Copper � Aluminum � Other

3. Primary Taps �±2 x 2.5% �±2.5% �Other

4. Applied standard � IEC � ANSI � BS �Other

5. Insulation Class

Primary �Maker Standard(155°C) � Other

Secondary � Maker Standard(155°C) � Other

6. Winding Temperature Rise

Primary �Maker Standard � 80°C � 100°C � 115°C �Other

Secondary �Maker Standard � 80°C � 100°C � 115°C �Other

7. Accessories �Maker Standard (Dial-type thermometer)

� Temperature Monitoring Device

�Cooling Fans controller

�Cooling fans � User Spec . ( P V Hz)

�Maker Standard.

8. Attached specification ( �Yes , �No ) , If “Yes” (Total page : pages)

9. Remarks

1.

2.

3.

Features 22Improved air cooling 22

Size reduction 23

Standard rating 23

Equipment 24

Dimension 24

Manufacturing process 26

Major manufacturing facilities 27

Accessories 28

Information required when ordering 28

Major supply record 29

Oil Immersed Transformer

LS Transformer

Contents

Compact Type, Environment-Friendly Type

20ＩＩ

It may seem to go unnoticed but the LS Oil Immersed

transformer takes the environment of consumer energy into serious consideration.

As an insulation media that use insulation oil, the LS Immersed Transformer has been newly

desinged to optimize the working environment in order to reduce noise with the use of non-aging,

cold rolled, high permeability, grain oriented silicon steel.

Leading transformer manufacturer that has provided total solution for power generation system!

There is nothing like LSIS for Oil Immersed Transformer as well.

Nuclear power plant,Semiconductor manufacturingfactory, Automobile factoryPetrochemical factory, Drill ship, Wharf crane, Rollingplant, International airport,thermoelectric power plant,transformer substation, theater

Skyscrapers Underground mall, Subway,Hotel, Hospital

Waste water processing facility, Hydropower plant

Places that require rigorousreliability

Places with restrictiveinstallation conditions

Public places with muchemphasis on fire prevention

Places that requireenvironmental durability

Oil Immersed Transformer that use insulating oil have been widely used in a variety of areas including indoor andout door facilities.

Applications

Oil Immersed Transformer

ＩＩ21

There are different structures and methods of coil widning according to capacity,volume and its usage. LS has applied the optimal coil widning obtained through yearsof research and development. The size of conductor has been designed to tolerateallowable current, temperature rise and the electromagnetic force that occurs in case ofexternal short-circuit. The concentric arrangement that inserts primary and secondarycoils based on core has been taken as the standard method of arrangement with theinsulation classification and mechanical force taken into account.

Coils

The iron core is made of sophisticated high permeable magnetic silicon steel laminatedwith no secular variation and is designed to minimize the vibration andnoise during operation by minimizing no-load current and loss through precisioncuttingprocesses. The junction between Leg and Yoke Core has been manipulatedthrough precision processing of 45℃ to take advantage of directivity of rolling and hasalso gone through annealing at the high temperature of 800℃ to eliminate magneticproperties.

Cores

Being made of cold rolled steel, the tank is able to endure internal pressure, and it wasalso designed and manufactured with a harnessed mechanical force to prevent anydeformation caused by external shocks while transportation or othes.

Tank

It is designed to have superior cooling effect through corrugated cooling method andalso features aesthetic appearances.

Cooling

In the case of conservator mounting transformer, the conservator and external coverof a transformer are connected through an appropriate pipe with an oil gauge attachedon it. In addition, the conveyor and the case are detachable if needed as they areassembled by bolts.

Conservator

22ＩＩ

InnovationHighly recognized with the largest manufacturing

capacity as well as No.1 market share in domestic market,

the LS Transformer is seeking globalization with a new conceptual

transformer that greatly improve in common envirovement environment and reduction of loss

along with unpatrolled stability.

Improved aircooling

Traditional panel-type radiators cool off through the convection phenomenon based on the difference in temperature between transformer case and a separately installed radiator but the case of Corrugate Cooling System is made of a radiator so that it prevents a temperature rise by increasing the contact area with the air.

The case and the radiator has been combined as one and the junction area has been stably and cohesively welded with robot welding while the case has been processed with embossing to enhance mechanical strength.

It features low channel resistance as the body and the radiator are embodied as a single entity.

As the case itself is used as a radiator, the heating effect has improved by as much as 30%, compared to the one that uses only one side as a radiator.

To prevent rusting we applied the Shot peening and powder painting methods.

PRINCIPLE OFCORRUGATE

LOW CHANNELRESISTANCE

MECHANICALSTRENGTH

INCREASEDHEATING AREA

PAINTINGTREATMENT

Features

ＩＩ23

Oil Immersed Transformer

Indoor of heat sinkingThe contact area betweeninsulating oil and cooling fin insideTR increases.

30%30%Reduction

Panel-type heat sinkingItemStructure

Heat release effect

Area (Size)

Radiator type

Weak

Large

Corrugate heat sinking

Wrinkle type

Strong(30%)

Small(30%)

Corrugated radiation fin has been installed instead of panel-type heat sinking in order to reduce theheat of Oil Immersed Transformer, which enhances thermal effects by increasing the contact areaof the insulation oil by reducing approximately 30% of its volume.

Size reduction

Standard ratingCategory

Indoor / Outdoor

50 / 60Hz

Class A

55℃

KSC 4317, IEC 60076-1

Dd0 / Dyn11 and etc

24kV

50

150

22.9

F23.9-R22.9-21.9-20.9-19.9

6.6 / 3.3

Three phase

300, 400, 500, 600, 750,

1000, 1500, 2000, 2500,

3000, 4000, 5000, 7500

100, 200, 300, 400, 500,

600, 750, 1000, 1500, 2000,

2500, 3000, 4000, 5000

100, 200, 300, 400, 500,

600, 750, 1000, 1500,

2000,2500, 3000, 4000, 5000

0.38 - 0.22

Three phase

0.38 - 0.22

Three phase

6.6 / 3.3

F6.9-R6.6-6.3-6.0-5.7/F3.45-R3.3-3.15-3.0-2.85

7.2

22

60

3.6

16

45

1.1 or less

2.5

-

Standard Rating

Place of Installation

Frequency

Insulation class

Temperature rise of

primary winding

Application standard

Primary rated voltage (kV)

Primary tap voltage (kV)

Secondary rated voltage (kV)

Constant

Angular displacement

Rated capacity (kVA)

StandardInsulation

level

System voltage

Power frequency

withstand voltage

Impulse withstand

voltage

※Corrugate radiating fin up to 5,000kVA is available to be manufactured.

24ＩＩ

Dimension Corrugate heat sinking

D

W

H

Capacity

(kVA)

100

200

300

400

500

600

750

1,000

1,500

2,000

2,500

3,000

3,500

Impedance

(%)

4.0

4.0

4.5

4.5

5.0

5.0

6.0

6.0

6.0

6.5

6.5

6.5

6.5

750

1,100

1,300

1,500

1,800

2,000

2,400

3,000

3,800

4,600

5,500

6,500

7,350

1.8

1.6

1.5

1.5

1.4

1.3

1.3

1.3

1.2

1.2

1.1

1.1

1.2

6.0

5.5

5.0

4.5

4.5

4.0

4.0

4.0

3.5

3.5

3.0

3.0

3.0

97.6

97.8

98.0

98.1

98.2

98.3

98.3

98.4

98.5

98.6

98.7

98.8

98.7

1,000

1,180

1,330

1,430

1,430

1,510

1,580

1,850

1,980

2,170

2,250

2,350

2,150

650

860

970

990

1,010

1,090

1,130

1,390

1,550

1,670

1,750

1,900

2,000

1,200

1,230

1,280

1,320

1,370

1,420

1,510

1,550

1,850

2,000

2,050

2,250

2,700

Voltageregulation

(%)

No-loadcurrent

(%)

Efficiency

(%) W D H

Dimension(mm) Weight

(Kg)

3P 22.9-6.6kV/ HV-LV

1. A transformer up to 5,000kVA is available to be manufactured upon request.2. The data above are based on the standard specifications of LSIS. (The size and features can be altered upon request or according to

customer’s specifications.)

Equipment

ＩＩ25

Oil Immersed Transformer

Dimension

WD

H

Radiator-heated panel

Capacity

(kVA)

5,000

7,500

10,000

12,000

D

3,000

3,200

3,400

3,600

W

2,800

3,000

3,000

3,100

H

3,300

3,400

3,500

3,700

Oilamount

(ℓ)

2,700

3,700

5,300

5,700

Primaryvoltage

(kV)

22

22

22

22

Noloadcurrent

(%)

3.5

3.0

2.0

2.0

Voltageregulation

(%)

1.0

0.8

0.6

0.6

Efficiency

(%)

99.0

99.3

99.4

99.5

Grossweight

(Kg)

10,500

14,000

18,500

19,300

22.9kV/HV

Impedance

(%)

5

6

8

8

1. A transformer up to 20,000kVA is available to be manufactured upon request.2. The data above are based on the standard specifications of LSIS.(The size andfeatures can be altered upon request or according to

customer’s specifications.)

Dimension(mm)

26ＩＩ

Manufacturingprocess

A fully automated manufacturing

process and clean manufacturing line

guarantees the fastest possible

delivery of Transformer with

supreme quality.

�

�Iron core processing Primary winding processing

�Assembly

�

Completion Test & Inspection

Equipment

ＩＩ27

Oil Immersed Transformer

Majormanufacturing Facility

Corrugated radiation finautomatic manufacturing facilityA fully automated radiation finmanufacturing and welding facilityensures a consistent quality.

Automatic case welding facilityApplying the case welding robot, we are able to provide products ofconstant quality and mechanicalstrength to our customers.

Case painting facilityAnticorrosive painting treatmentprevents rust and keeps the exteriorappearance elegant.

28ＩＩ

Equipment

AccessoriesItem

Name plate

Hand hole

-

● ● ●

●

●

●

◐

●

●

◐

●

●

●

●

◐

●

●

●

●

●

●

●

◐

◐

◐

◐

◐

●

●

◐

◐

◐

●

●

●

●

●

●

●

●

◐

●

●

●

●

●

●

- - -

-

-

-

-

-

-

- -

- -

--

-

-

- -

-

--

-

-

-

-

-

-

NLTCIndoor

Outdoor

Oil level gauge

Nojunction

Junction

TemperatureIndicator

Nojunction

Junction

Pressure relief device

Nojunction

Junction

SectionsteelBase

Pressure valve

Buchholz relay

Compound gauge

Oil valve

Ground terminal

Terminal box

Breather

Conservator

※ ● : Standard accessory, ◐ : Optional accessory

10~100kVA 150~750kVA 1000~3000kVA 3000kVA~

Informati onrequired when ordering

1. Detailed information on mark(display) to be applied to transformer(for example, IEC 60076-1 or ANSI/ IEEE 57.12.40)

2. System constant3. Frequency4. Cooling type (for instance, self-cooled type or Forced cooling type)5. Rated voltage of primary and secondary winding6. Whether or not a tap is required. Indication of type of tap if required.7. If applicable and the range of tab in voltage variation is greater

than ±5% and corresponds to the location of maximum current tap,refer to “5.4 Inquiry and Specifications on Tap when ordering”.

8. Maximum voltage of each primary winding device9. Method of system earth (for each primary winding)10. Insulation class for each primary winding11. Connection symbol and neutral terminal of primary winding (Vector

Group )12. Characteristics regarding installation, assembly, transportation and

handling. Maximum allowable dimension and weight13. Detailed information on auxiliary power supply (Fan, Switching device,

Warning, Misc.)14. Attachment location of various devices including gauge and name

plates.15. Type of oil conservation16. For multi-primary winding Transformer, in case of primary winding in

particular, the information on auto transformer, load coupling, activeoutput if needed and reactive output is required.

17. In case of short-circuit impedance multipleprimary winding transformer, indicate impedance designated fora couple primary winding

18. Altitude if it exceeds 1,000m above the sea19. Detailed geographical information on the area where earthquake is

expected20. Any possibility of unbalanced load. Detailed information on condition

of unbalance if that is the case.21. Detailed information on the impact of frequent excess current of

transformer22. Planned and periodic excess current

23. Information necessary for parallel operation - Rated power, Rated voltage ratio, Tap that corresponds to thevoltage whose ratio is different from that of main tap

- Load loss at rated current of main tap, appropriate modification ofstandard temperature

- Information on impedance and others for main tap and at least forterminal tap if the range of primary winding tap exceeds ±5%,terminal

- Connection chart and/or connection symbols- Impedance voltage at rated current(when connecting to main tap)

ＩＩ29

Oil Immersed Transformer

Dongkuk steelPohang Section ElectricFurnace Transformer3.3kV/440 - 254V 3500kVA.

Australia66kV/ 11kV 10MVA

NEPEAN DAM_RAWWATERPUMPING STATION3.3kV/6.6kV5MVA

Galvanized enclosure22.9kV/ 380-220V 750kVA

Major deliveryperformance

30ＩＩ

Memo

ＩＩ31

Oil Immersed Transformer

�For your safety, please read user's manual thoroughly before operating.

�Contact the nearest authorized service facility for examination, repair, or adjustment.

�Please contact qualified service technician when you need maintenance.Do not disassemble or repair by yourself!

�Any maintenance and inspection shall be performed by the personnel having expertise concerned.Safety Instructions

www.lsis.biz

�LSIS (Middle East) FZE ��Dubai, U.A.E. Address: LOB 19 JAFZA VIEW TOWER Room 205, Jebel Ali Freezone P.O. Box 114216, Dubai, United Arab EmiratesTel: 971-4-886 5360 Fax: 971-4-886-5361 e-mail: jungyongl@lsis.biz

�Dalian LSIS Co., Ltd. ��Dalian, ChinaAddress: No.15, Liaohexi 3-Road, Economic and Technical Development zone, Dalian 116600, ChinaTel: 86-411-8273-7777 Fax: 86-411-8730-7560 e-mail: lixk@lsis.com.cn

�LSIS (Wuxi) Co., Ltd. ��Wuxi, ChinaAddress: 102-A , National High & New Tech Industrial Development Area, Wuxi, Jiangsu, 214028, P.R.ChinaTel: 86-510-8534-6666 Fax: 86-510-522-4078 e-mail: xuhg@lsis.com.cn

�LSIS-VINA Co., Ltd. ��Hanoi, VietnamAddress: Nguyen Khe - Dong Anh - Ha Noi - Viet NamTel: 84-4-882-0222 Fax: 84-4-882-0220 e-mail: srjo@lsisvina.com

�LSIS-VINA Co., Ltd. ��Hochiminh , VietnamAddress: 41 Nguyen Thi Minh Khai Str. Yoco Bldg 4th Floor, Hochiminh City, VietnamTel: 84-8-3822-7941 Fax: 84-8-3822-7942 e-mail: sbpark@lsisvina.com

�LSIS Tokyo Office ��Tokyo, JapanAddress : 16th, Higashi-Kan, Akasaka Twin Tower, 2-17-22, Akasaka, Minato-ku, Tokyo, JapanTel: 81-3-3582-9128 Fax: 81-3-3582-2667 e-mail: jschuna@lsis.biz

�LSIS Shanghai Office ��Shanghai, ChinaAddress: Room E-G, 12th Floor Huamin Empire Plaza, No.726, West Yan'an Road Shanghai 200050, P.R. ChinaTel: 86-21-5237-9977 (609) Fax: 89-21-5237-7191 e-mail: jinhk@lsis.com.cn

�LSIS Beijing Office ��Beijing, ChinaAddress: B-Tower 17FL.Beijing Global Trade Center B/D. No.36, BeiSanHuanDong-Lu, DongCheng-District,Beijing 100013, P.R. ChinaTel: 86-10-5825-6025,7 Fax: 86-10-5825-6026 e-mail: cuixiaorong@lsis.com.cn

�LSIS Guangzhou Office ��Guangzhou, ChinaAddress: Room 1403,14F,New Poly Tower,2 Zhongshan Liu Road,Guangzhou, P.R. ChinaTel: 86-20-8326-6764 Fax: 86-20-8326-6287 e-mail: linsz@lsis.biz

�LSIS Chengdu Office ��Chengdu, ChinaAddress: Room 1701 17Floor, huanminhanjun internationnal Building, No1 Fuxing Road Chengdu, 610041, P.R. ChinaTel: 86-28-8670-3101 Fax: 86-28-8670-3203 e-mail: yangcf@lsis.com.cn

�LSIS Qingdao Office ��Qingdao, ChinaAddress: 7B40,Haixin Guangchang Shenye Building B, No.9, Shandong Road Qingdao 26600, P.R. ChinaTel: 86-532-8501-6568 Fax: 86-532-583-3793 e-mail: lirj@lsis.com.cn

� HEAD OFFICELS Tower, 1026-6 Hogye-dong, Dongan-gu,

Anyang-si, Gyeonggi-do 431-848, Korea

Tel. (82-2)2034-4910/4875/4865

Fax. (82-2)780-0382

e-mail. khweikim@lsis.biz, sgkim@lsis.biz, ycjung@lsis.biz

http://www.lsis.biz

�Global Network

Specifications in this catalog are subject to change without notice due to continuous product development and improvement.

2011. 05 Cast Resin Transformers / Oil Immersed Transformer (E) 2009. 04/(01) 2011. 05 Printed in Korea STAFF

ⓒ 2009.4 LSIS Co.,Ltd. All rights reserved.