iljin electric transformer · sep. 1973 expansion of transformer and large size motors facilities...

ILJIN ElectricTRANSFORMER

http://www.iljinelectric.co.kr

www.iljinelectric.co.kr

Printed in korea 2009.10

ILJIN ElectricTRANSFORMER

ILJIN ELECTRIC TRANSFORMER

07 | Characteristics & Classification

09 | Manufacturing Process

11 | Single Phase Transformer / 345kV

13 | Three Phase Transformer / 230kV



19 | Three Phase Transformer / 22.9kV

21 | N2 Gas Type Transformer

23 | Furnace Transformer

25 | Scott Transformer

27 | Less Flammable Power Transformer

29 | Accessories

35 | Oil Preservation System

36 | Special Specifications & Packing

37 | Maintenance

38 | Performance Records

ContentsILJIN Electric Company’s long history brings “Accumulated technology and High Reliability” to its transformer.ILJIN, with its goal to contribute to stable supply of electric power, has been concentrating tocontinuously develop the required technology in this field. With the accumulated technology, ILJIN ismanufacturing transformers with high performance, low noise and sufficient protection against shortcircuit, which makes it suitable for various kinds of applications. The main transformers manufacturedby ILJIN Electric Company are the ultra high voltage transformer of 154kV and 345kV classes. ILJINElectric Company also has a wide range of production lines such as medium size transformers fortransmission and distribution, furnace transformers, less flammable transformers and Scotttransformers. Moreover, ILJIN Electric Company provides turn-key services, a total engineeringsolution which includes manufacturing, installment and tryout testing for electric transmission anddistribution.

ILJIN Electric Transformer

Program for Transformer Design

Title ofProgram Developer Function Remark

Calculation of Impedance, Loss and

Sort Circuit

2 FLD 8 Anderson (Norway). Eddy Loss

3 EMFIS Seoul National University (Korea). Electromagnetic Analysis Finite Element

4 ANSYS Ansys Company (U.S.A). Structure Analysis Finite Element

Designing, Optimising and Finite Element

Electromagnetic Analysis

MAXWELL Magnetostartic, Eddy Current,

2D/3D Transient EM, Loss, Force

7 SOLIDEDGE Siemens ( Germany) Designing

8 EDMAG 3D VIT (Ukraine) Stray Load Loss Analysis Finite Element

9 PTAN VIT (Ukraine) Seismic Analysis Finite Element

10 HARMONICS VIT (Ukraine) Harmonic Analysis Finite Element

ILJIN Electric TRANSFORMER

History of the company Oct. 1938 Establishment of Incheon Plant by Toshiba, Japan

(The First Transformer Factory in Korea)

Feb. 1956 Privatized and renamed to Leechun Electric Mfg. Co., Ltd.

Jul. 1958 Merged with Dae-Dong Industry, a major pump manufacturer

Jul. 1969 Establishment of Switchgear, a generator facility

Sep. 1973 Expansion of transformer and large size motors facilities

Oct. 1977 Completion of the 154kV, 345kV transformer plant

Mar. 1978 Establishment of small size motor and metal plate facility

Apr. 1978 Cooperation with Toshiba, Japan

Mar. 1979 Expansion of manufacturing facility

Jul. 1979 Production of Turbo Freon-resistant electric motors for Turbo-refrigerator

Jan. 1980 Certification for production of 345kV Ultra High Voltage class

Feb. 1981 Designated as manufacturer of parts for the electric railway

May. 1981 Designated as major manufacturer of parts for ships

Apr. 1983 Supplied mold transformers to the Seoul Subway

Mar. 1985 Manufactured pumps for nuclear power plants

Apr. 1985 Received Golden Tower Industry Medal on Electricity Day

Mar. 1989 Manufactured High Voltage High Speed motor (3050kW-2P)

Oct. 1989 Technical cooperation with Mitzubishi Heavy Industries

Mar. 1990 Received Culture Award in technical part

Jul. 1990 Obtained CSA Standard certification and 1st class Quality Management

Dec. 1990 Designated as quality control inspection organization

Jan. 1991 Manufactured submerged propeller pump motors

May. 1991 Expansion of Pump facility

Oct. 1993 Acquired KT certification for new technology

May. 1994 Obtained ISO 9001

Mar. 1996 Merged into Samsung group

Oct. 1997 Changed company name and CI

Dec. 1998 Merged into ILJIN Group

Jan. 1999 Changed company name and CI to ILJIN Heavy Industries. Co., Ltd.

Jun. 1999 Designated as maintenance company of Water Resource in Korea

Aug. 2002 Certification for high efficient energy components (200kW-4P/160kW-6P)

Dec. 2002 Renewal of ISO 9001 to the 2000 version

Oct. 2003 Development of 154kV Less Flammable Power Transformer

Dec. 2004 Development of the new concept Gate Pump

Dec. 2004 Supplied Ultra High Voltage Scott transformer for the electric railway

Nov. 2005 Received award from KEPCO

Dec. 2005 Approval of the new concept Gate Pump from the Minister of Commerce, Industry and

Energy

Feb. 2006 Obtained KT certification from Incheon Kyung-gi Machinery Industry Union

Aug. 2007 Changed company name and CI to ILJIN Electric Co., Ltd.

May. 2008 Carried out Mindanao Substation Expansion Project (Turn Key Project)

Mar. 2009 Completion of new transformer line

Oct. 2009 Aquired KEMA Certificate

1 FLD12 Anderson (Norway).

5 FLUXS 2D Cedrat (France).

6 Ansoft (USA)

ILJINElectricCompanyTransformer

ILJIN Transformer 8

CHARACTERISTICS & CLASSIFICATION

ILJIN Transformer7

High Reliability is maintained through stable design based onaccumulated technical power and new technology, excellentworking environment and facilities, strict work control andsystematic test and inspection process.

High Reliability

To remove moisture from deep inside, coil and coreassembly is fully dried using Vacuum Vapor Phase DryingPlant, which is controlled automatically according to presetoptimum condition.

Perfect Drying Process

Low no load loss and noise reduction is achieved by adoptingmiter joint construction and automatic core cutting in whichthe characteristics of grain oriented silicone steel is fullyutilized.

Core Construction with High Performance

Sufficient mechanical strength against Short Circuit isachieved by maintaining a balance of ampere-turns betweenwindings and adopting materials suitable for mechanicalforce calculated by computer as well as exercising adequatecare in winding assembly.

Sufficient Mechanical Strength against Short Circuit

ILJIN has top class winding technology including all kinds ofdisc and layer winding with designs suitable for eachapplication with other abundant winding technology.

Advanced winding technology

Thanks to the combination of excellent core construction andassembly technique, ILJIN transformer can reach noise levelbelow the requirements of all International Standards as wellas Korea.

Transformer amicable to environment with Low Noise

Characteristics

Classification

Oil Type

Insulation Cooling System Voltage Application

ONAN ONAFOFAN

OFAF,ODAFOFWF,ODWF

345kV154kV22.9kV6.6kV3.3kV

Generation PlantTransmission & Distribution System

Electric FurnaceRectifierRectifier

Scott Connection

Surrounding Condition

Applied Standard

Numbers of Phases & Rated Frequency 1 or 3 / 50 or 60Hz

1 or 3 / 50 or 60Hz

International Standard

Tap Changer Type Tap Selecting Range

National Standard Association Standard

Ambient Temperature

Installing Site

Amplitude

Insulation Classification

-25~40

Indoor / Outdoor

1000m

A Class

IEC

ISO

NLTC

OLTC

Rated Voltage 2step x 5 or 2.5% or Option Range

Rated Voltage 8step x 1.25% or Option Range

KS

JEC

ANSI

BS

KMC

ES

NEMA, TR2

IEEE

JEMA

Frame

Oil Preservation System Cooling System Base

Conservator Type

N2 Sealing Type

Air Seal Cell Type

ONAF

OFAN

OFAF,ODAF

OFWF,ODWF

SKID

ROLLER

General Specification

ILJINHeavyIndustriesTransformer

ILJIN Transformer 10

Manufacturing ProcessTRANSFORMERELECTRICAL CHARACTERISTICS

ILJIN Transformer9

Manufacturing Progress

Core Slitting / 100m/minSlitting Machine

Core Slitting / with : 100~1000mmLength : 5000mm

Auto Core Cutting M/CCoil Winding(Vertical Winding)Control Weight : 20ton

Coil Winding M/C

Coil Winding(Horizontal Winding) Control Weight : 15ton

Coil Winding M/CVacuum Drying / Full automaticcontrol system

Vacuum Vapor Drying PlantVacuum Drying / HeatingAutoclave Size : L10m x W5m x H8m(7.2m)

Vacuum Vapor Drying Plant(Autoclave)

Erection Parts / Main : 200tonSub : 20ton

Overhead CraneOil purification & Vacuum Filling/ 10000L/Hr

Oil Vacuum PurifierBIL 2000kVTest Equipment

5075

100150200

(200)5)

300(400)5)

500(600)5)

(700)5)

750100015002000250030003500400045005000600070008000900010000

22.9kV-6.6 or 3.3kV

Io

22.9kV-Low Volt1)

Io

6.6 or 3.3kV-Low Volt1)

Io

Low Volt-Low Volt1)Item

Io4)3)2)

97.3597.4597.6597.6597.7597.8597.8598.0598.05

2.42.31.91.91.91.81.81.61.6

7.57.07.07.06.56.06.05.55.0

97.4597.5597.6697.6597.7597.8597.9598.0598.2098.3098.3098.3098.4098.5098.6098.6098.70

2.02.01.81.71.71.61.61.51.51.51.51.51.51.41.41.41.3

6.56.56.56.06.05.55.55.05.05.04.54.53.53.03.03.03.0

97.2597.3597.6597.6597.8597.9597.9598.0598.2598.2598.2598.3598.4598.4598.5598.5598.65

2.32.21.91.91.81.81.81.61.61.61.51.51.51.41.41.41.3

6.56.56.56.56.06.06.05.55.04.54.03.53.03.03.03.03.0

97.6597.6597.8597.9598.1098.2098.3098.3098.3098.4098.5098.6098.7098.8098.9098.9098.9098.9599.0099.1099.1099.1099.1099.20

1.91.91.81.81.81.61.61.61.51.51.51.41.41.21.21.21.11.11.11.11.11.11.11.1

6.56.56.06.06.05.55.05.04.53.53.53.03.03.03.03.02.82.82.82.82.82.52.52.0

Capa-city(kVA)

5075100150200

(200)5)

300(400)5)

500(600)5)

75010001500

22.9kV-6.6 or 3.3kV

Io

22.9kV-Low Volt1)

Note) 1) Low Volt : Nominal Voltage of 1.1kV and below 2) : Efficiency 3) : Voltage Variation rate 4) Io : Exciting Current 5) ( ) : Non-standard

Note) 1) Low Volt : Nominal Voltage of 1.1kV and below 2) : Efficiency 3) : Voltage Variation rate 4) Io : Exciting Current 5) ( ) : Non-standard

Io

6.6 or 3.3kV-Low Volt1)

Io

Low Volt-Low Volt1)Item

Io4)3)2)

97.6597.7597.85

3.02.52.0

6.05.55.0

98.2598.2598.2598.2598.2598.3598.3598.4598.45

1.51.51.51.51.51.41.41.31.3

1.61.51.55.55.55.04.54.54.5

97.7597.8597.9598.0598.0598.1598.2598.35

1.91.91.61.61.61.51.51.5

2.02.56.06.05.55.54.54.5

97.8597.8597.9598.0598.1598.2598.4598.4598.5598.5598.6598.75

1.81.81.61.61.51.51.41.41.41.31.31.2

3.03.55.04.54.54.54.04.04.03.53.53.0

Capa-city(kVA)

Three Phase

Single Phase



Drawing

TRANSFORMERULTRA HIGH VOLTAGE TRANSFORMER

345kV Class

ILJIN Transformer11

Primary bushing

Local control panel

Radiator

A B H

100/133.3/166.7 7100 6520 7800 39000 175000

Dimensions(mm) Insulating Oil( )

Weight(kg)

Capacity(MVA)

Outline Dimensions No. Name of parts

H.V Bushing

Name Plate

Oil Temperature Indicator

Winding Temperature Indicator

Alchole Temperature

Ladder

Sudden Pressure Relay

Cooling Fan

1 -

2 -

3 -

4 -

5 -

6 -

7 -

8 -

Middle Voltage Bushing

Neutural Bushing

Pressure Relief Device

Oil Level Gauge (ROD type)

Dehydrating Breather for Main

L.V Bushing

Oil Pump

Local Control Panel

9 -

10 -

11 -

12 -

13 -

14 -

15 -

16 -

Drain Valve

Sampling Valve

Grounding Pad

Pulling eye

Jack Boss

Oil Level Gauge for O.L.T.C

Conservator for O.L.T.C

Filling Hole for O.L.T.C

17 -

18 -

19 -

20 -

21 -

22 -

23 -

24 -

Oil Level Gauge for Main

Conservator for Main

Protective Relay for O.L.T.C

O.L.T.C

Oil Flow Indecator

Filtering Valve for Main

Filling Hole for Conservator

Filling Hole for Main

25 -

26 -

27 -

28 -

29 -

30 -

31 -

32 -

Radiator

Radiator Valve

Lifting Hook for Main Tank

Dehydrating Breather for O.L.T.C

N2 Gas Valve

Oil Fiter Unit

Motor Drive Unit

33 -

34 -

35 -

36 -

37 -

38 -

39 -

Cooling Type : ONAN, ONAF, OFWF, OFAF

A B H



Drawing


230kV Class

ILJIN Transformer13

Conservator

Cooling Fan

Local control panel

H.V Bushing

Lifting Lug for Cover

Maintenance Hole

Ladder

L.V Bushing

Supporting Bracket ror

L.V Lightning Arrester

Supporting Bracket ror

H.V Lightning Arrester

1 -

2 -

3 -

4 -

5 -

6 -

7 -




O.L.T.C

Press Relief Device for Main

T.V Bushing

H.V.N Bushing

Lifting Lug for Main

Buchholtz Relay for Main

8 -

9 -

10 -

11 -

12 -

13 -

14 -

15 -

16 -

Conservator for Main (Air Seal Cell Type)


Drain Valve for Conservator

Radiator

Cooling Fan

Supporting Bracket for Radiator

Drain Valve with Sampling Device

Base

Grounding Pad

17 -

18 -

19 -

20 -

21 -

22 -

23 -

24 -

25 -

Jack Boss

Breather for Main

Local Panel

ILJIN Mark


Filtering Valve with Sampling Device

Name Plate

Breather for O.L.T.C

Drain Valve for OLTC

26 -

27 -

28 -

29 -

30 -

31 -

32 -

33 -

34 -

Oil Thermometer

Winding Thermometer

Motor Unit

Gas & Water in Oil Monitor

Gas Release Device

Radiator Valve

Bushing for Core Grounding

35 -

36 -

37 -

38 -

39 -

40 -

41 -


60

75

125

240

8100 6300 7450 45000 128500

8850 7000 7300 49500 145000

9600 5900 8550 54700 219000

12950 7850 7350 85500 289000


Weight(kg)

Capacity(MVA)




Drawing


154kV Class

ILJIN Transformer15

OLTC Conservator

Motor drive unit


H.V Arrester

H.V Bushing

Filtering Valve

Lifting hook For Cover

Ladder

L.V Bushing

L.V Busduct Fange

1 -

2 -

3 -

4 -

5 -

6 -

7 -




Oil Filter Unit For O.L.T.C

O.L.T.C


H.V.N Bushing

8 -

9 -

10 -

11 -

12 -

13 -

14 -

Buchholz Relay



Jack Boss

Base


Maintenence Hole

15 -

16 -

17 -

18 -

19 -

20 -

21 -

Local Panel

Lifting hook For Main Tank

Radiator

Cooling Fan

Name Plate



22 -

23 -

24 -

25 -

26 -

27 -

28 -



Grounding Pad

Motor Drive Unit

Drain & Sampling Valve

29 -

30 -

31 -

32 -

33 -

A B H

10

15

25

35

40

60

100

120

170

6100 5300 5500 15300 44500

6500 4500 5350 13500 46000

6950 5400 5400 17500 51500

7000 5500 5800 20000 66000

7300 5800 6100 23000 79500

7650 7000 5900 44000 145000

8300 6800 6600 43000 140000

6650 6200 6800 33500 138000

9050 6950 6200 41000 173000


Weight(kg)

Capacity(MVA)


Capacity(KVA)



TRANSFORMERMEDIUM SIZE TRANSFORMER

66kV Class

ILJIN Transformer17

Primary Bushing

OLTC Conservator


Support for H.V Arrester

H.V Bushing

Buchholtz Relay


M.V Bushing

1 -

2 -

3 -

4 -

5 -

N.L.T.C Handle

Maintenance Hole

Lifting Hook for Cover


L.V Bushing

6 -

7 -

8 -

9 -

10 -

Ladder

Conservator

Oil Level Gauge

Jack Boss

Drain Valve

11 -

12 -

13 -

14 -

15 -

Grounding Pad

Foundation Bolt

Base

L.V Cable Box

Radiator

16 -

17 -

18 -

19 -

20 -

Dehydrating Breather

Filtering Valve


Name Plate

Terminal Box

Filling Hole

21 -

22 -

23 -

24 -

25 -

26 -

A B H

2000

3500

5000

7500

10000

15000

2850 2600 3450 3900 9500

2950 2900 3500 4300 12000

3200 3300 3700 5000 15000

3500 3700 3950 6300 19000

3850 4200 4300 7700 24000

4300 4900 4600 9900 31500


Weight(kg)

Drawing


ILJIN Transformer 20ILJIN Transformer19


Drawing

TRANSFORMERMEDIUM SIZE TRANSFORMER

22.9kV Class

Primary bushing

Local control panel

Cooling Fan


H.V.N Bushing

H.V Bushing


Base

Ladder

1 -

2 -

3 -

4 -

5 -


Buchholz Relay

N.L.T.C Handle


L.V Bushing

6 -

7 -

8 -

9 -

10 -

Conservator

Oil Level Gauge

ILJIN Mark

Filtering Valve


11 -

12 -

13 -

14 -

15 -

Radiator


Name Plate


Radiator Valve

16 -

17 -

18 -

19 -

20 -

Jack Boss

Local Control Panel

Drain Valve

Sampling Valve

Grounding Pad

Cooling Fan

21 -

22 -

23 -

24 -

25 -

26 -

1500

2000

2500

3000

5000

7500

10000

15000

1900 2300 2100 1350 4700

2000 2400 2300 1400 5000

2250 2650 2600 2000 7000

2400 2800 2700 2100 8000

2650 3500 2900 2900 11000

2900 3850 3100 3800 15000

3200 4200 3500 5500 20000

3600 4650 4000 7500 28000

22.9kV ~

6.6/3.3kV

1500

2000

2500

3000

5000

7500

10000

15000

1900 2350 2100 1400 4500

2000 2450 2300 1450 5200

2300 2900 2600 2200 7100

2500 3300 2800 2650 8200

1900 2400 2000 1400 4500

2100 2500 2300 1450 5000

2300 3000 2500 2200 7000

2500 3450 2700 2600 8100

InsulatingOil ( )

Weight(kg)

22.9kV~

Low Voltage

3.3/3.3kV~

Low Voltage

VoltageA B H

Dimensions(mm)Capacity(KVA)

InsulatingOil ( )

Weight(kg)Voltage

A B H

Dimensions(mm)Capacity(KVA)




TRANSFORMERN2 GAS SEALED TYPE TRANSFORMER

Local control panel

Radiator & Cooling Fan

3P-42/56/70

3P-15/20/25

3P-60/80/100

3P-20MVA

3P-20/25

3P-15/20/25

3P-5/6.25

1P-8.2/70

1P-6.6/8.3

1P-5/6.251P-

3.3/4.16

154kV

154kV

115kV

115kV

66kV

66kV

33kV

33kV

33kV

33kV

33kV

7150 5450 5600 29500 111000

6000 4750 5150 22000 75500

7400 5500 6900 36500 137000

4400 3600 4900 14500 5600

6000 4200 4400 15300 58500

5150 3400 4900 15300 55000

3250 3000 4000 8000 26000

2300 2750 3550 3400 17500

2250 2500 3550 2650 15200

2100 2400 3550 2150 12000

1850 2000 3400 2000 9700

Insulating Oil( )

Weight(kg)Voltage

A B H

Dimensions(mm)Capacity (MVA)


Radiator

Maintenance Hole

H.V Bushing

L.V Bushing

Lifting Lug for Cover

Bushing for Core Grounding

1 -

2 -

3 -

4 -

5 -

6 -

Valve for Vacuum

Box for Core Grounding Bushing

Oil Level Gauge


Pressure Gauge

Upper Filter Valve

7 -

8 -

9 -

10 -

11 -

12 -

Name Plate


Grounding Pad

Base

Jacking Pad with Hauling Hole

Terminal Box

13 -

14 -

15 -

16 -

17 -

18 -

N2 Gas Equipment Control Box

Lower Filter / Drain Valve

Sudden Pressure Relay for Main Tank

Gas Sampling Valve

Lifting Hook

No Load Tap Changer

Radiator Valve

19 -

20 -

21 -

22 -

23 -

24 -

25 -

DrawingN2 Gas Class




TRANSFORMERFURNACE TRANSFORMER

Furnace Transformer

Cu bushing

Cooler


Ladder

H.V Bushing

Unit Cooler

Oil Pump



1 -

2 -

3 -

4 -

5 -

6 -



O.L.T.C



L.V Bushing

7 -

8 -

9 -

10 -

11 -

12 -

Buchholz Relay

Filtering Valve

Maintenance Hole


Base

Grounding Pad

13 -

14 -

15 -

16 -

17 -

18 -

Drain Valve

Jack Boss

Control Panel



Name Plate

19 -

20 -

21 -

22 -

23 -

24 -


Oil Filter Unit for O.L.T.C



Pulling eye

Motor Drive Unit for O.L.T.C

Oil Flow Indecator

25 -

26 -

27 -

28 -

29 -

30 -

31 -

Number of phase : Three phases or Single phase

Cooling Type : ONAN, ONAF, OFWF, OFAF, etc

Capacity : 100 ~ 100,000kVA

Primary Voltage : Low Voltage ~ 66kV

Secondary Voltage : Low Voltage as Customer s Requirements

Connection : Primary ---- or Y

Secondary or OPEN , /Y

Tap Changer : NLTC or OLTC as Customer s Requirements

Drawing



Drawing

TRANSFORMERSCOTT TRANSFORMER

Scott Transformer

bushing

Conservator


Radiator

H.V Bushing

Filtering Valve

FAN / MOTOR

H.V.N Arreester

H.V.N Bushing

Local Panel

1 -

2 -

3 -

4 -

5 -

6 -

7 -

Conservator for Mian




OIL FILTER UNIT

O.L.T.C

L.V Bushing

8 -

9 -

10 -

11 -

12 -

13 -

14 -

L.V Arrester

Ladder



Buchholz Relay

Protective Relay for OLTC

Dehydrating Breather for OLTC

15 -

16 -

17 -

18 -

19 -

20 -

21 -


Lifting Lug

Jack Boss

Drain & Sampling Valve

L.V Surge Counter

Motor Drive Unit

22 -

23 -

24 -

25 -

26 -

27 -

Grounding Pad



H.V.N Surge Counter


Name Plate

28 -

29 -

30 -

31 -

32 -

33 -

The Scott Transformer is designed and manufactured using advanced technology based on Iljin

Electric Company’s long history of experience and accumulated technology.

Main application is the subway power supply achieving single phase from three phases.

1.Rated Capacity : 30/40, 45/60MVA

2. Tap Changer : OLTC

3. Cooling Type : ONAN, ONAF

4. Primaty Voltage : 154kV

5. Secondary Voltage : 55kV

6. Connection : Primary ---------T

Secondary ----- L



TRANSFORMERLESS FLAMMABLE POWER TRANSFORMER

Less Flammable Power Transformer

Conservator

Cooler

Drawing

In comparison with the power Transformer, the Less Flammable power Transformer can reduce the

possibility of fire accidents by using less flammable insulation oil. Iljin Electric Company

manufactures Less Flammable power Transformers by suitable designs based on simulation

systems, a technology acquired through long experiences and accumulated technology. Iljin has

also acquired KEPCO’s development & testing certification.

Using Less Flammable power Transformers can guarantee safety in high power spending facilities

such as urban substations.

1. Roted Capacity : 2,000~90,000kVA

2. Rated Voltage : 154kV~22.9kV

3. Rated Frequency : 60Hz or 50Hz

4. Tap Voltage Range : 20%(NLTC) or OLTC Type


L.V Arrester

Surge Counter

L.V.N Bushing

L.V Bushing

Bushing for Stablizing Winding

H.V Arrester

H.V.N Bushing

1 -

2 -

3 -

4 -

5 -

6 -

7 -

O.L.T.C

Local Control Panel

H.V Bushing


OLTC Protective Relay for OLTC

Oil Level Gauge


8 -

9 -

10 -

11 -

12 -

13 -

14 -

ILJIN Name Plate

OLTC Conservator

OLTC Oil Level Indicator

Lifting Hook

Dehydrating Breather for main tank

Ladder

OFWF Radiator

15 -

16 -

17 -

18 -

19 -

20 -

21 -

OFWF Radiator (stand-by)

Oil Pump

Motor Drive Unit

OLTC Filter

Drain and Sampling Valve

Gas Detective Relay


22 -

23 -

24 -

25 -

26 -

27 -

28 -

Name Plate (for single phase)

Name Plate(for three phases)

Local Control Panel



Oil Flow Indicator

Grounding Pad

29 -

30 -

31 -

32 -

33 -

34 -

35 -



TRANSFORMERACCESSORIES

ILJIN Transformer29

Bushing

Standard Accessories

Single Type : Applied for System with Voltage of 30KV and below

Condenser Type : Applied for System with Voltage of 46KV and above

Specification

Temperature Indicator

Oil Level Gauge


NLTC

Breather

Drain Valve

Hand Hole

Lifting Lug

Earthing Terminal

Radiator Valve

Paint

Rod Type

Dial Type

Rod Type

Dial Type

2500kVA ~

50~750kVA

50~750kVA

1,000~1,500kVA

1,000kVA

2,000kV~

1,500kVA

Enamel Paint or Customer s SpecificatioonSetting for delta Transformer Setting for star Transformer

Linear off- loadtap changer

Single-bridging off- load tap changer

Double-bridgingoff- load tapchanger

Tap can be adjusted from outside of the Tank. Various types are produced according to voltage and capacity.

No Load Tap Changer

High Voltage Tap Changer and Circuit Diagran

Special High Voltage Tap Changer Circuit Diagram

Name PlateBushing




ILJIN Transformer31

This is applied for Continuous Voltage Change or Constant Voltage regardless of Input Voltage. Various types areproduced according to voltage and capacity. To be suitable for any operating condition, Motor Operating Device issupplied with both the manual and automatic operating method.

On Load Tap Changer

40

60

80

100

1200

20

Used for temperature indication of insulation oil and also equipped with Alarm and Trip Contact when required.


Used for temperature indication of Winding heated by the Bushing Current Transformer and Variable Resistance.Equipped with Alarm and Trip Contact when required.





ILJIN Transformer33

10.2

4(26

0)

0.63(16)10.31(262)

6 EQUALLY SPACEDLUGS 0N 9.25(235) DIA B.C

5.31

(135

)

1.77

(45)

0.47

(12)

1.02

MA

X.(

26)

RESET ARM

Used for indication of Oil level in Tank and Conservator. Panel Type for medium capacity and Magnetic Dial Typefor large capacity are equipped.

Oil Level Guage

This is used for relieving abnormal pressure from inside the Tank and can be equipped with Trip Contact whenrequired.


GAS RELEASE COCK

TERMINAL BOX

INSPECTION WINDOW

160

230

185

HOLE TAPPED CONDUIT

CHECKING ALARM SWITCH

CHECKINGBUTTON

160

51 110

140

6- 11

This is installed at mid connection pipe between Transformer and Conservator. In case of Gas Generation orchange in Flow Velocity due to internal abnormal condition, Buzzer is operated to give Alarm or Trip Signal.

Buchholtz Relay

This is a Preventing Device against Oil Deterioration by absorbing Penetrating Moisture from outside and consistsGlass Tube for Silicagel and Tube.


TRANSFORMEROIL PRESERVATION SYSTEM

ILJIN Transformer35

N2 Gas Sealed Type

N2 Gas is sealed in expansion Tank located at upper

and side part of Tank.

No penetration of Moisture and OxyzenRefilling is required when leakage happened

Option in Order

Air Seal Cell Type

Having Nitril Rubber Bag inside the Conservator,

Insulating Oil is completely isolated from the air

outside.

No pressure Sealing type

It is difficult to replace at the spot when the rubber

bag is damaged

More than 5MVA in order

Conservator Type

Conservator is installed at upper part of Tank with

Dehydrating Breather.

Easy for Maintenance

TRANSFORMERSPECIAL SPECIFICATIONS & PACKING

ONAN

Cooling Type

ONAN

ONAF

OFAF

Equipment

Panel Type Radiator

Panel Type Radiator, Cooling Fan, Control Panel

Unit Cooler : Cooling Pipe + Cooling Fan + Pump, Control Panel

Insulation Oil, when heated by the heat of the Core and Coil, moves up naturally into the

radiator through the upper part of the Tank. When it is cooled it moves back down

through the radiator and into the lower part of the Tank. This type is generally used for

easy maintenance.

Panel Type Radiator. This radiator is fabricated with two overlaid steel plates which arespot-welded at end and mid point and cut in preset size and expanded to form wantedshape. This construction have features of less oil contents, high mechanical strength andvacuum resistance.

ONAF

This uses the Cooling Fan attached to the Panel Type Radiator of ONAN, increasing

the cooling effect. This is also applied to double rating which ONAN is used for light

duty and ONAF is used for heavy duty. In this case, ONAF has output 120~140%

higher than ONAN s.

OFAF

This uses Unit Cooler which is constituted with Special Cooling Pipe, Oil Pump and Cooling Fan.

To increase cooling effect, Directed Oil Flow method with Zig-zag oil flow can be used when required.

OFWF & OFAF also can be suplied to overcome any restrictions at site


Radiator RadiatorTank

Radiator

Fan

Fan

Oil Pump

Fan

RadiatorTank

TankUnit Cooler

CoreandCoil

CoreandCoil

CoreandCoil



TRANSFORMERMAINTENANCE

ILJIN Transformer37

Daily Check-up

Main Tank

Bushing

Dehydration

Breather

Pressure

Relief Device

N2 Gas

Equipment

1. Temperature

2. Oil Level

3. Oil Leakage

4. Abnormal sound

vibration

1. Oil Leakage

2. Contamination of

insulator

1. Checking

Dehydration

2. Check cylinder

OiloN2 gas leakage

Gas pressure and

temperature

1) Oil temperature Indicator

2) Winding temperature indicator

3) Defects of temperature indicator

1) Oil level indicator2) Defects of Oil level indicatorCompare the relationship between oil temperatureand oil level with the graph

Checking bushing flange, valves, the radiator, the

gasket sealing of oil pipes and welding.

Comparing with normal sound, check if there is any

unusual sound or vibration.

Check the oil level and leakage

Check the adhesion of sodium chloride or cracksthrough checking the appearance.

Check the moisture level of dehydration material (ifthe blue color of the material turns to light pink, thatindicates dehydration)

Check the oil amount of cylinder

The pressure plate is a cover that protects againstexternal damage. Check the pressure plate to findN2 gas or oil leakage

Gas leakage can be monitored by pressure and

temperature graph.

In the case that the relationship between the temperature and

level of oil is contrary, following check-up is necessary.

Leakage from the main tank

Malfunction of Oil Temperature Indicator

Malfunction of temperature indicator

When there is internal defect of Oil temperature gauge and Oil

level indicator, they need to be replaced with new ones.

Tight the bolts of gaskets if the leakage is from gasket sealing, If

the leakage doesn t stop, replacement of the gasket is necessary.

In the case of leakage on welded parts, please contact us.

If abnormal sound or too much vibration is caused by loosened

attachment, tight the related parts or contact us.

In the case of oil leakage or if the oil level is lowered, contact us.

Clean-up when there are foreign materials on insulator.

Contact us, when crack or breakage is found.

When the color is changed, it needs to be dried out or replaced.

If the oil amount is not sufficient, fill the oil after clean up.

In the case of N2 gas or oil leakage due to natural depletion of

pressure plate, it needs to be replaced.

In the case of decreasing pressure, gasket sealing or pressure

plate of pressure relief device needs to be checked.

In the case of low pressure, supplement the N2 gas.

This is the check-up list for a user. The check-up period can be decided depending on the importance and operating time of the machinery. The

check-up should be carried on only in uninterrupted condition. Information should be recorded on the check-up sheet including the date of check-

up, climate, temperature, name of machinery being checked-up, serial number (on the name plate), and inspector s information.

Items List Methods Proper measures

Periodic Checking

Parts

Bushing

1 year

1 year

1 year

1 year

1 year

2~3

year

1 year

Appearance inspectionContamination on the panel.Internal dew condensation

Check the temperature indicator

Check switches

Appearance inspection

Movement testMovement of float and indicatorBehavior of Micro Switch

Appearance inspectionLeakageGas inside of inspection windowPaint condition

Behavior test of contact Check ON-OFF condition with the test button.

Appearance inspectionCrack or distortion of pressure plateOil or gas leakage

Movement test at the contact pointOpening the cover of pressure plate, Check ON-OFF at the contact point.

Appearance inspectionContamination on the panel or dew condensation

Pressure indicationCheck 0 point under the atmospheric pressure.

Relay alarm testStart and stop test of a cooling fanInsulation resistance test of wiresThorough eye inspection of wires

1 Crack on insulatorDamageOil leakageOver heatingOccurrence of tarnish

1. Dial temperature indicator

2. Dial oil level indicator

3. Buchholtz relay

4. Pressure relief device

5. Pressure indicator(N2 gas filled type)

6. Check-up on controlprotection circuit

AppearanceInspection

In the case of contamination on panel orinternal dew condensation, it needs to bereplaced.

Same as Dial temperature indicator Make sure the float and the indicator movesmoothly and turns on at the contact withinthe range of 0~5%

The gasket needs to be replaced if oil leaksfrom the gasket sealing.The relay needs to be replaced if the relay atthe contact point (ON-OFF) is not workingproperly.

The pressure plate needs to be replaced,when there is leakage or crack on it.Micro Switch needs to be replaced when thecondition of contact point (ON-OFF) is poor.

In the case of contamination on panel orinternal dew condensation, the indicatorneeds to be replaced.The indicator also needs to be replaced whenZero point adjustment is not working.

There should be no defects.Insulation resistance should be more than500V megger and 2M

There should be no defects.The gasket needs to be replaced if oil leaksfrom the gasket sealing.Insulator needs to be replaced when cracked.

This is the checklist that Manufacturer s inspector (user s witness inspection when necessary) performs depending on the importance and

operating time of the machinery (Check-up period listed on the table below). The procedure should be carried on only in blackout condition. It is

recommended to inspect all the transformers or related transformers in the premise on a blackout day for the periodic check-up.

Category Items Procedure Criterion and proper measuresCheckingperiod



TRANSFORMERMaintenance

ILJIN Transformer39

Maintenance of Insulation Oil

The main cause of depletion of insulation oil is oxidation. The insulation oil gets oxidized due to the contact with the air. The oxidation causestemperature rise of a transformer, catalysis of metal, effluent of insulation varnish. Moreover, due to chemical reaction such as decomposition andpolymerization, it generates sludge, which settles on the bottom of the tank and interferes cooling that makes temperature rise. The increase of thetemperature leads T.A.N to increase, and volume resistivity and insulation destruction voltage to decrease.

Criterion for T.A.N Moisture

Category

New oil

Transformer oil of over 66kV

Transformer oil of under 33kV

Caution

Defect

Standard (mgKOH/g)

Under 0.02

Ok if under 0.2

OK if under 0.3

0.3 ~ 0.5

Over 0.5

Condition

OK

Caution

Defect

Standard (ppm)

Under 40

40 ~ 50

Over 50

Remark

When abnormality is found,

not only the replacement of

insulation oil but also

reconstruction of core and coil

(internal structure) is required.

Criterion of Insulation Destruction Voltage

Gas in oil

Type of Abnormality and Gas Occurred

Category

Transformers rated over

66kV (No direct contact

with other machinery)

Otherwise

Condition

Ok

Cautious

Poor

Ok

Cautious

Poor

Standard (kV/205mm)Over 35

30~35

Under 30

Over 30

20~30

Under 20

Type

Overheat of insulation oil

Overheat of sunken solid insulation material

Discharge during insulation

Discharge of sunken solid insulation material

Main gas occurredHydrogen(H2), Methane(CH4), Ethylene(C2H4), Ethane(C2H6), Propane(C3H8), Propylene(C3H6)

Carbon Monoxide(CO), Carbon dioxide(CO2), Hydrogen(H2), Methane(CH4), Ethylene(C2H4), Ethane(C2H6), Propane(C3H8), Propylene(C3H6)

Hydrogen(H2), Methane(CH4), Ethylene(C2H4), Acetylene(C2H2), Propylene(C3H6)

Carbon Monoxide(CO), Carbon dioxide(CO2), Hydrogen(H2), Methane(CH4), Acetylene(C2H2), Ethylene(C2H4), Propylene(C3H6)

Category

TCG and Amountof Each Gas Defect

TCG IncreaseTendancy

CO2+CO Amount

Condition

Cautious

Poor

Cautious

Poor

Cautious

Poor

TCG

1000

700

TCG

2000

1400

H2

400

400

H2

800

800

CH4

200

150

CH4

400

300

C2H6

150

150

C2H6

300

300

C2H4

300

200

C2H4

600

400

CO

300

300

CO

600

600

Gas Amount (ppm)

Gas Amount (ppm)

Capacity of TR TCG Increase Rate / year

350

250

TCG Increase Rate / month

100

70

In the case of Opening type (use dehydration breather)

Capacity of TR

Capacity of TR

Under 10MVA

Over 10MVA

Capacity of TR

Under 10MVA

Over 10MVA

Under 10MVA

Over 10MVA

Under 10MVA

Over 10MVA

0.42~1.7 /g

Over 1.7 /g

Standard

OK: continuously usable Cautious: reproduction or replacement if possible Poor: immediate reproduction or replacement

OK: continuously usable Cautious: reproduction or replacement if possible Poor: immediate reproduction or replacement

Maintenance of Accessory

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

15

10

15

15

15

15

15~20

3

15~20

15~20

10

15

3

15

15

15

15

15

20

*15

*15

*10/20

15

5

Including RTD and dehydrating breather

After 3 years, all units need to be replaced if

abnormal sound occurs from one unit





Thorough inspection and maintenance after disassembly on a 10year basis. Replacement on a 20 year basis

Gasket

Rubber bag for the conservator

Gauges and relays

Valves

Radiator

Air forced unitcooler

Water forced unit cooler

Oil Pump

Cooling Fan

BCT

Terminal box, Terminal board

Wires

Small Screws

Single Bushing

Condensor Bushing

OLTC Handle

OLTC

Motor Drive Unit

Oil Filter Unit

NBR

Rubber Cell

Main body

Bearing for the Fan

Main body

Bearing for the pump

Main body

Bearing for the Fan

Main body

Bearing for the pump

The items needs to be replaced as follows when there is a problem.

NO Item Replacement period Remark

Footnote (1) The replacement period above varies depending on condition and environment of operation. It is limited to a condition that the Daily and

Periodic check-up has been carried out constantly as advised.

(2) Gaskets of parts needs to be replaced on a 10-year basis.

(3) The replacement time of OLTC and a motor drive unit can be decided either on the number of operation or operation years, whichever comes

first. However, specific application base on the number of operation should be performed according to the instruction manual.

(1)

(2)

(3)

(3)



TRANSFORMERPERFORMANCE RECORDS

ILJIN Transformer41

Standard1 , 15/20MVA, 154/23KV 2000

1 166.7MVA 345/ 3/161/ 3/23KV 2000

3 , 45/50MVA, 154/22.9KV 2001

3 , 15MVA, 22.9/3.3KV 2001

1 , 15/20MVA, 154/23KV 2002

1 , 15/20MVA, 154/23KV 2002

1 166.7MVA, 345/161/23KV 2003

1 345/161/23KV 2003

3 , 30/40MVA 154/6.6KV 2004

3 , 37.6/49MVA, 158KV/13.8KV 2004

3 , 15/20MVA, 154/6.6KV 2004

3 , 100/133.3/166.7MVA, 345/161/23kV 2004

3 , 100/120MVA, 154/22.9KV 2005

3 , 9/12MVA, 154/16kV 2005

3 , 15/20MVA, 154/23kV 2005

3 , 25/30MVA 154/6.6KV 2006

3 , 30/40MVA, 154/135.67KV 2006

3 , 30/40MVA, 154/6.6KV 2006

3 , 15/20MVA, 154/23kV 2006

3 , 100/133.3/166.7MVA, 345/161/23kV 2007

3 , 130/160MVA, 154/22kV 2007

3 , 90/116MVA 154/10.2KV 2008

3 , 25MVA 22.9KV/148V 2008

3 , 60/70MVA 154kVA 2008

3 , 30/45MVA, 154KV/22.9KV 2008

3 , 40MVA 22kV/210V 2008

3 , 130/150MVA, 154/22.9KV 2008

3 ,, 25/30MVA, 154KV/6.6KV 2008

3 , 30/35MVA 33/6.6KV 2008

3 , 200MVA 154/33kV 2008

3 , 27MVA/30MVA 33kV/6.6kV 2008

3 , 30/40MVA, 154KV/22.9KV 2008

3 , 60MVA 33/11kV 2008

3 , 47MVA 33/6.9kV 2008

3 , 28MVA 22/6.9KV 2008

3 , 30/40MVA 154/22.9KV 2009

3 , 60MVA 154KV/22KV 2009

3 , 30/40MVA 154KV/22.9KV 2009

3 , 23/30.5MVA 22.9/6.6KV 2009

3 , 20/26MVA, 154KV/6.9KV 2009

3 , 76/100MVA, 154KV/22.9KV 2009

3 , 70/90MVA 154/11kV 2009

3 , 80/100MVA 154KV/22KV 2009

3 , 70/90MVA 154KV/11KV 2009

3 , 60/70MVA 154kV/11kV 2009

3 , 130/173MVA 154/16.5kV 2009

3 , 20MVA, 22/148V 2003

3 , 25MVA, 22.9KV/160V 2005

3 , 9000kVA, 22900/100V 2005

3 ,10MVA, 22.9kV/100V 2005

KEPCO

KEPCO

ILJIN Copper Foil

Young-Poong

KEPCO

KEPCO

KEPCO

KEPCO

Samsung

Dea-Lim

Seoul Water

KEPCO

POSCO

West Inchon Power Plant

KEPCO

Samsung

Korea Airport

Hwan Young steel

KEPCO

KEPCO

POSCO

Daewoo

Dongil

Dongil

Kumho

Dong-Bu

Hanyoung

Samsung

Hyundai

Dong-Bu

Hyundai Steel

Hanhwa

Hyundai Steel

Hyundai Steel

POSCO

KAIST

POSCO

Kolon

Ssangyoung

Lotte

Lotte

POSCO

POSCO

POSCO

Hyundai Steel

POSCO

Dong-Bu

Dong-Bu

Dongil

Dong-Bu

Category

154-345kV

Korea Overseas Supply Record for Transformer

MYANMAR

KOREA

PHILIPPINES

INDONESIA

USA

TRINIDADPANAMA

CANADA

NIGERIA

KENYATHAILAND

SAUDI

IRAN BANGLADESH

INDIA

Type / Rating Customer Year

EGYPTPAKISTAN

iljin electric transformer · sep. 1973 expansion of transformer and large size motors facilities...

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