WOOJIN Electric & Power Co., LTD.

Rev. 1.2.2

WOOJIN Electric & Power Co., LTD.Research & Development Institute/Science and Technology Agency

High Voltage

Porcelain

Station Post

Insulators

WOOJIN Electric & Power Co., LTD.

Contents

2/11

Design Features

Dimensions and Characteristics

Manufacturing Process

Products

Test Report

Drawing

Insulation Design

Rev. 1.2.2

Housing : 자기(Porcelain)

Material : 고강도 알루미나 소지 적용

Shed Profile : IEC 60071-1, IEC 60815

BIL 550에 따른 오손 설계

Regular shed type

Glaze Color : 갈색(Brown)

WOOJIN Electric & Power Co., LTD.

Design Features

HV Station Post

TR-287Standard : ANSI C29.9-1983(R1996)

End Fittings : 캡(Cap)

Material : 구상흑연주철(Ductile iron)

+ 용융아연도금(Hot dip galvanizing)

Tap : Ø127(5”) bolt circle

4-M16 or 5/8”-11UFS

Cement : Portland

3/11

Rev. 1.2.2

WOOJIN Electric & Power Co., LTD.

HV Station Post

Dimensions and Characteristics

4/11

Description TR-205 TR-208 C8-200Ⅱ

Applied standard ANSI C 29.9 ANSI C 29.9 IEC 60273

Rating, kV BIL 110 BIL 150 BIL 200

Height of Insulator, mm 254 355 475

Leakage Distance, mm 393 610 950

Bolt Circle,

mm(in)

Top (3) (3) 76

Base (3) (3) 76

Cantilever Strength, kN(lbs) (2,000) (2,000) 8

Tensile Strength, kN(lbs) (8,500) (10,000) -

Compression Strength, kN(lbs) (10,000) (10,000) -

Torsional Strength, kN-cm(in-lbs) (7,000) (8,000) 2

Low-Frequency Wet Withstand, kV 45 60 70

Impulse Withstand, kV 110 150 200

RIV

60㎐ Test Voltage, kV 10 15 -

Max. RIV @1,000㎑, ㎶ 50 100 -

Rev. 1.2.2

WOOJIN Electric & Power Co., LTD.

HV Station Post

Dimensions and Characteristics

Description TR-287 WEP R-bar

Applied standard ANSI C 29.9 ← IEC 60168

Rating, kV BIL 550 ← A.C 25

Height of Insulator, mm 1,143±1.6(45”±1/16”) ← 660±3

Leakage Distance, mm 2,515(99”) 1,020

Max. Cap Diameter,

mm(in)

Top Ø305(12”) Ø170mm(6.7”) Ø145

Base Ø305(12”) Ø170mm(6.7”) Ø161

Bolt Circle,

mm(in)

Top Ø127(5”) ← Ø120

Base Ø127(5”) ← Ø127

Cantilever Strength, kN(lbs) (2,600) ← 10

Tensile Strength, kN(lbs) (25,000) ← 80

Compression Strength, kN(lbs) (75,000) ← -

Torsional Strength, kN-m(in-lbs) (90,000) ← 4.5

Low-Frequency Wet Withstand, kV 230 ← 125

Impulse Withstand, kV 550 ← 275

Critical Impulse Flashover(Positive), kV 610 ← -

RIV60㎐ Test Voltage, kV 73 ← -

Max. RIV @1,000㎑, ㎶ 200 ← -

5/11

Rev. 1.2.2

WOOJIN Electric & Power Co., LTD.

TR-287 of HV Station Post

Manufacturing Process

M.P. of TR287

원료 계량 원료혼합 및 미분쇄 탈철 및 소지여과 필터 프레스

토련 및 압출 블랭크 건조

정형 자연건조

6/11

Rev. 1.2.2

WOOJIN Electric & Power Co., LTD.

TR-287 of HV Station Post

M.P. of TR287

건조

시유 소성

겉모양검사

냉열시험 시멘트 조립 및 양생 완제품

Manufacturing Process

7/11

Rev. 1.2.2

WOOJIN Electric & Power Co., LTD.

HV Station Post

TR-208

BIL 150kV

C8-200Ⅱ

BIL 200kV

TR-287

BIL 550kV

TR-205

BIL 110kV

Products

8/11

▶ [한국전기연구원(KERI)]대전력 발전설비 지지용 사용

▶ [한국핵융합연구소] 초고압(대용량)설비 지지용 사용

▶ [한국전기연구원(KERI)]대전력 발전설비 지지용 사용

▶ 발,변전소 등설비 지지용 사용

▶ 발,변전소 등설비 지지용 사용

Rigid-bar

A.C 25kV

▶ 한국철도 시설공단

▶ 신분당선 등

- ANSI Standard- IEC Standard

Rev. 1.2.2

WOOJIN Electric & Power Co., LTD.

HV Station Post(TR Series)

Test Reports

9/11

TR-208 TR-287

Rev. 1.2.2

WOOJIN Electric & Power Co., LTD.

HV Station Post(TR Series)

Drawing

10/11

TR-208 TR-287

Rev. 1.2.2

WOOJIN Electric & Power Co., LTD.

IEC60815(1986) ▶

IEC60071-1(1993-12)

▼

Insulation Design

Pollution levelMinimum nominal specific creepage distance1)

(mm/kV2))

Ⅰ- Light 16

Ⅱ- Medium 20

Ⅲ- Heavy 25

Ⅳ- Very heavy 31

1) For the actual creepage distance, the specified manufacturing tolerances are applicable (see IEC Publication 273: Dimensions of Indoor and Outdoor Post Insulators and Post Insulator Units for Systems with Nominal Voltages Greater than 1,000V, IEC Publication 305: Characteristics of String Insulator Units of the Cap and Pin Type, IEC Publication 433: Characteristics of String Insulator Units of the Long Rod Type, and IEC Publication 720: Characteristics of Line Post Insulators).

2) Ratio of the Leakage distance measured between phase and earth over the r.m.s. phase to phase value of the highest voltage for the equipment (see IEC Publication 71-1).

TABLE Ⅱ

Specific creepage distance(see column 2, Table Ⅱ)

(mm/kV)

Artificial pollution tests Severity withstand values at the phase-to-earth voltage

Salt fog method

(kg/㎥)

Solid-layer methods

S.D.D★)

(mg/㎠)

LayerConductivity

(μS)

16 5 to 14 0.03 to 0.06 15 to 20

20 14 to 40 0.10 to 0.20 24 to 35

25 40 to 112 0.30 to 0.60 36

31 >160 - -

TABLE Ⅲ

Highest voltage for equipment

Um

kV

(r.m.s. value)

Standard short-duration power-frequencywithstand voltage

kV

(r.m.s. value)

Standard lightning impulse withstand voltage

kV

(peak value)

52 95 250

72.5 140 325

123(185) 450

230 550

145

(185) (450)

230 550

275 650

170

(230) (550)

275 650

325 750

Note - If values in brackets are considered insufficient to prove that the required phase-to-phase withstand voltages are met, additional phase-to-phase withstand tests are needed.

TABLE 2 – Standard insulation level for range Ⅰ

(1 kV < Um < 245kV)

S.D.D★) = Salt Deposit Density.

HV Station Post

11/11

Rev. 1.2.2