Electric & Power Co., LTD. - woojinenp.com

1 woojin Electric & Power Co., Electric & Power Co., & Development Institute/Science and Technology AgencyHigh VoltagePorcelainStation PostInsulatorsWOOJIN Electric & Power Co., FeaturesDimensions and CharacteristicsManufacturing ProcessProductsTest ReportDrawingInsulation DesignRev. : PorcelainMaterial : High-Strength AluminaShed Profile : Application standard of pollution insulated design IEC 60071-1, IEC 60815 Glaze Color : Brown, Light Gray, WhiteWOOJIN Electric & Power Co., FeaturesTR287 of HV Station PostTR-287 Standard : ANSI (R1996)End Fittings : CapMaterial : Ductile iron + Hot dip galvanizingTap : 127(5 ) bolt circle4-M16 or 5/8 -11 UFSC ement : Portland3/11 Rev.

2 Electric & Power Co., Station PostDimensions and Characteristics4/11 DescriptionTR-205TR-208C8-200 IIAppliedstandardANSIC , kVBIL 110 BIL 150 BIL 200 Height of Insulator, mm254355475 Leakage Distance, mm393610950 BoltCircle,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)-Compress ion Strength, kN(lbs)(10,000)(10,000)-Torsional Strength,kN-cm(in-lbs)(7,000)(8,000)2 Low-FrequencyWet Withstand, kV456070 Impulse Withstand, kV110150200 RIV60 Test Voltage, kV1015-Max. RIV@1,000 , 50100-Rev. Electric & Power Co., Station PostDimensions and CharacteristicsDescriptionTR-287 WEPR-barAppliedstandardANSIC IEC 60168 Rating, kVBIL 550 25 Height of Insulator, mm1,143 (45 1/16 ) 660 3 Leakage Distance, mm2,515(99 )1,020 Max.

3 CapDiameter, mm(in)Top 305(12 ) 170mm( ) 145 Base 305(12 ) 170mm( ) 161 BoltCircle,mm(in)Top 127(5 ) 120 Base 127(5 ) 127 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) Withstand, kV230 125 Impulse Withstand, kV550 275 Critical Impulse Flashover(Positive),kV610 -RIV60 Test Voltage,kV73 -Max. RIV@1,000 , 200 -5/11 Rev. Electric & Power Co., of HV Station PostManufacturing Process of TR-287 MeasurementBall MillingMagnetic Separation & Vibration screeningFilter PressingVacuum ExtrudingDryingFormingAir -Drying6/11 Rev. ProcessWOOJIN Electric & Power Co., of HV Station of TR-287 Drying Off CompletelyGlazingFiringVisual InspectionThermal-Shock TestAssembling & Cure the Concreted SurfaceCompleted Product7/11 Rev.

4 ProcessWOOJIN Electric & Power Co., Station PostTR-208 BIL 150kVC8-200 IIBIL 200kVTR-287 BIL 550kVTR-205 BIL 110kV8 25kV-ANSI Standard-IEC StandardRev. Electric & Power Co., Station Post(TR Series)9/11TR-208TR-287 Rev. ReportsWOOJIN Electric & Power Co., Station Post(TR Series)10/11TR-208TR-287 Rev. Electric & Power Co., (1986) IEC60071-1(1993-12) Pollution levelMinimum nominalspecific creepage distance1)(mm/kV2))I-Light16II-Medium20 III-Heavy25IV-Very heavy311) For the actual creepage distance, the specified manufacturingtolerances 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).

5 2) Ratio of the Leakage distance measured between phase and earth over the phase to phase value of the highest voltage for the equipment (see IEC Publication 71-1).TABLE IISpecific creepage distance(see column 2, Table II)(mm/kV)Artificial pollution tests Severity withstand values at the phase-to-earth voltageSalt fog method(kg/ )Solid-layer )(mg/ )LayerConductivity( S)165 to to to202014 to to to 352540 to to >160--TABLE IIIH ighest voltage for equipmentUmkV( value)Standard short-duration Power -frequencywithstand voltagekV( value)Standard lightning impulse withstand voltagekV(peak value) (185)450230550145(185)(450)2305502756501 70(230)(550)275650325750 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 2 Standard insulation level for range I(1 kV < Um< 245kV) ) = Salt Deposit Station Post11/11 Rev.

6 Desig