Grading Capacitors - High Voltage Capacitors- Brochure

HIGH VOLTAGE CAPACITORSHigh quality and highly reliablecapacitors for circuit breakers,capacitive voltage transformersand laboratory useMORE POWER.MORE ENERGY.MORE IDEAS.TM2Company InsightTo provide products for the optimal management of electricityMaxwell Technologies SA isrecognized as the global leader inHigh Voltage Capacitor Technologydue to first-in-class products’quality and reliability, excellentelectrical & mechanical strengthresulting in long lifetime and itsability to respond to individualcustomer requirements. Additionalstrengths are intensive R&Dactivities to maintain our marketposition as well as the leadershiprole in setting HV capacitorstandards.Our Mission? To assure a profitable growth while positioning ourselves as leader? To be recognized as an enterprise where the employees are satisfied? To anticipate the needs of the market due to permanent innovation? To develop strong partnerships internally and externallyOur GoalsEntrepreneurial spirit Integrity? Own the job ? Respect? Professionalism ? Honesty? Initiative ? Objectivity? Courage ? AuthenticityTeam spirit Velocity? Communication ? Goal oriented? Support ? Improvement? Recognition ? Renewal? Satisfaction ? PassionOur ValuesCONDIS®High VoltageCapacitors3Maxwell Technologies SA – CONDIS® HV CapacitorsTable ofcontentsGrading Capacitors Page 4Coupling Capacitors Page 6GIS Capacitors Page 8Capacitive Voltage Divider (CVD) Page 10Speciality Capacitors Page 11CONDIS® Technology Page 12Design Details Page 13Technical Overview Page 14Type Test Overview Page 16Certification Page 18Inquiry Form Page 19CONDIS®High VoltageCapacitorsprovide safe and reliable productsfor applications in:? Live tank circuit breakers? Dead tank circuit breakers? GIS circuit breakers? Capacitive voltage transformers(CVT)? Laboratories? Other special HV applications? Improved technology andquality with automation and inline quality controls? Standardised construction? Protection against corrosion? Excellent mechanical andelectrical strength? Short delivery time? Long lifetimeMaxwell Technologies is theworld leader in high voltagecapacitor technology, due to:? Flexibility for new or specialapplications? Intensive R&D activities tomaintain our market position? Leadership in setting HVcapacitor standards? First-in-class products’ qualityand reliability? Flexible, customized-products4Grading CapacitorsGrading capacitors used in live tankcircuit breakers allow the highvoltage to be distributed uniformlyin the interrupting chambers.Our years of experience andKnow-How in the production ofhigh voltage capacitors make themsuitable for all types of applicationsin the transport and distribution ofelectrical energy.For live tankbreakersCapacitance min from 200 pFNominal voltage Un from 9kV to 310kv 50/60HzTest voltage up to 600kV 50/60HzLightning impulse voltage up to 1300kV 1.2/50µsSwitching impulse voltage up to 1000kV 250/2500µsLightning impulse voltage up to 2000kV 1.2/2µschopped waveVibrations and mechanical shocks up to 40gCantilever strength from 5kNm to 25kNmOther values on requestTechnical specifications5Maxwell Technologies SA – CONDIS® HV CapacitorsPorcelainInsulatorThe table below gives an overview ofthe standard porcelains and theirmaximum capacitance. Please notethat only the insulators arestandardised. Changing test voltagelevels may result in a change of Cmax.Any capacitance less than or equal toCmax may be selected. All standardporcelains are equipped withalternating long-short sheds and are infull compliance with IEC 60815.Our «standard» fixing method offersthe following advantages:? fixing independent of flange diameter? interchangeability of old and newCONDIS® capacitors? compatibility with attachment ofsynthetic composite insulatorsOther fixing methods available onrequestCompositeInsulatorThe composite insulator consists of acylindrical tube of fibre-reinforcedepoxy coated with Silicon Rubber (SiR).The sheds are integrated into thecoating. The electrical and mechanicalproperties of the composite insulatorexceed those of all known syntheticmaterials and porcelain. SiR maintainsits superior hydrophobicity andresistance to creepage currents overdecades of use. Capacitors based oncomposite insulators offer the followingadvantages:? explosion-proof? reduced weight of capacitor? easier handling? fail-safe behaviour? reduced volume thanks to CONDORtechnologyA standard range of products is shownin the table below.Specials are available on request1200 4525 125 265 630 815 5000 6400 12000 75 95 1201200-1280 90 112 1251400 3700 145 315 750 970 4000 5100 9500 78 107 1251400-1480 4525 95 121 1441600 5260 170 375 860 1110 3100 4000 7400 110 135 1551600-1680 5650 116 145 1681800 4500 180 435 950 1225 3200 5000 7500 100 130 1521750-1830 6315 118 171 1872000 6300 125 150 1722000-2080 7180 300 520 1050 1355 2500 4000 6100 137 196 2058800 155 196 ---2200 8800 300 560 1200 1380 2500 4000 6100 190 220 ---2200-2280distance between creepage UN Utest UBIL Uch Cmax in PF Weight in kgflanges min max max max max for flanges diam. (mm) for flanges diam. (mm)L, [mm] [mm] [kV] [kV] [kV] [kV] 210 230 255 210 230 255See design details on page 13See design details on page 13distance between creepage Un Utest UBIL Uch Cmax in pF weight in kgflanges min max max max max for flanges diam. [mm] for flanges diam. [mm]L, [mm] [mm] [kV] [kV] [kV] [kV] 160 200 160 20012001184-1232 2990 125 265 630 815 4500 12500 25 4014001376-1424 3445 145 315 750 970 3800 10500 28 4415001472-1520 3670 160 350 800 1040 3300 9500 32 4716001568-1664 4010 170 375 860 1110 3200 9000 37 5018001760-1856 4575 180 435 950 1225 3000 8500 35 5520001952-2048 4910 210 520 1050 1355 2300 7900 48 6022002192-2240 7956 250 560 1200 1380 2500 6200 42 6526002576-2672 9463 300 600 1300 1680 2500 7000 50 806Coupling CapacitorsFor dead tankbreakersCoupling capacitors are used ondead tank breakers to limit theovervoltage coming from a shortdistance fault on a low capacitiveline.Capacitance min from 300 pFNominal voltage Un from 9kV to 250kV 50/60HzTest voltage up to 600kV 50/60HzLightning impulse voltage up to 1300kV 1.2/50µsSwitching impulse voltage up to 1000kV 250/2500µsLightning impulse voltage up to 2000kV 1.2/2µschopped waveVibrations and mechanical shocks up to 40gCantilever strength from 5kNm to 25kNmOther values on requestTechnical specifications7Maxwell Technologies SA – CONDIS® HV CapacitorsPorcelainInsulator? fixing independent of flange diameter? interchangeability of old and newCONDIS® capacitors? compatibility with attachment ofsynthetic composite insulatorsOther fixing methods available onrequestU nom U BIL Cmax Total length Distance between Creepage distance Diameter of flange # of pieces[kV] [kV] [pF] [mm] flange [mm] [mm] [mm] in series72.5 350 5200 780 550 2700 210 112000 705 511 1700 255 1145 650 3000 1550 1400 3700 210 16000 1430 1250 3700 230 112000 1396 1186 3500 285 1170 750 3000 1750 1600 5250 210 1245 900 3000 1950 1800 4500 210 15500 1790 1594 5250 255 110000 1953 1743 5537 285 115000 1825 1575 5500 380 11050 5500 2327 2131 6140 230 19000 2065 1871 3960 155 112000 2215 2005 5210 285 1362 1300 7000 2860 1440 7000 340 2550 1800 1250 4360 – 14360 255 2U nom U BIL Cmax Total lenght Distance between Creepage distance Diameter of flange # of pieces[kV] [kV] [pF] [mm] flange [mm] [mm] [mm] in series72.5 350 12000 977 847 1986 200 1145 650 3000 1543 1424 5124 160 16000 1347 1196 2907 200 112000 1347 1196 2907 200 1170 750 3000 1543 1414 5114 160 15000 1556 1426 5038 200 112000 1670 1530 3856 232 1245 900 3000 1943 1808 6573 160 110000 1871 1731 4309 200 115000 1818 1628 3938 286 130000 1825 1575 3918 344 11050 12000 2327 2187 5346 200 1362 1300 2000 2809 2674 9832 160 17000 2726 2596 6348 200 18000 2538 2348 5816 232 1550 1800 1250 4360 - 14990 160 2CompositeInsulatorThe composite insulator consists of acylindrical tube of fibre-reinforcedepoxy coated with Silicon Rubber (SiR).The sheds are integrated into thecoating. The electrical and mechanicalproperties of the composite insulatorexceed those of all known syntheticmaterials and porcelain. SiR maintainsits superior hydrophobicity andresistance to creepage currents overdecades of use.Capacitors based on compositeinsulators offer the followingadvantages:See design details on page 13See design details on page 13The table below gives an overview ofthe standard porcelains and theirmaximum capacitance. Please notethat only the insulators arestandardised. Changing test voltagelevels may result in a change of Cmax.Any capacitance less than or equal toCmax may be selected. All standardporcelains are equipped withalternating long-short sheds and are infull compliance with IEC 60815. Our«standard» fixing method offers thefollowing advantages:? explosion-proof? reduced weight of capacitor? easier handling? fail-safe behaviour? reduced volume thanks to CONDORtechnologyA standard range of products is shownin the table below.Specials are available on request8GIS CapacitorsFor gas insulatedcircuit breakersGIS circuit breakers for toughenvironments with extremetemperature variations, dust,pollution or confined space usegrading capacitors. Couplingcapacitors for special applicationsare also available for this type ofswitchgear.Capacitance min from 200 pFNominal voltage Un up to 500kV 50/60HzTest voltage up to 720kV 50/60HzLightning impulse voltage up to 1200kV 1.2/50µsSwitching impulse voltage up to 1000kV 250/2500µsLightning impulse voltage up to 2000kV 1.2/2µschopped waveVibrations and mechanical shocks up to 40gOther values on requestTechnical specifications9Maxwell Technologies SA – CONDIS® HV CapacitorsTypical GISCapacitor DesignHV GIS capacitors are dedicated tovarious types of Gas InsulatedSwitchgear, and the design istherefore customer-specific. Thegeneral design can be seen in theoutline drawing above.Independent of the application theflanges, tubes, and field distributionwill remain unchanged. Backwardcompatibility with our formertechnology is 100% guaranteed.However, the CONDOR technologywill often permit new concepts anddesigns, i.e. by higher capacitancein a given space.The table below shows selectedtypes of GIS capacitors to give anidea of the maximum capacitancepossible with the CONDOR®technology.flange overall flashover C UN Utest UBIL Uchdiameter length length max max max max maxD, [mm] L tot, [mm] L, [mm] [pF] [kV] [kV] [kV] [kV]100 600 546 700 180 460 1050 1150100 750 696 600 280 570 1150 1270120 600 530 1400 180 420 970 1150120 750 680 1100 210 460 1050 1365120 900 830 950 140 400 1160 1700120 1300 1230 950 250 570 1500 2000140 900 828 3100 110 300 800 1200140 900 828 1500 140 440 1160 1700140 1200 1128 1000 280 700 1700 2000174 1300 1210 2000 250 570 1500 2000174 1500 1410 3500 250 570 1500 200010Capacitive Voltage Divider (CVD)Capacitor voltage dividers (CVD)are a component used on completecapacitive transformers to measurethe voltage and/or the power on ahigh voltage overhead power line.Capacitance from 1nF to 30nFNominal voltage Un from 72.5kV to 765kVTest voltage up to 1200kV (525kV/section)Lightning impulse voltage up to 2425kV (1050kV/section)Standards: IEC 60 044-05IEC 60358IEEE C93.1Um Maximum Utest UBIL Overall Creepage Number Type Temp.ANSI / IEC capacitance ANSI / IEC ANSI / IEC length distance of of range[kV] [pF] [kV] [kV] [mm] [mm] section Design [oC]72.5 23000 140/165 350 1040 2200 1 A* -50/70110/123 12000 230/265 550 1205 3160 1 A* -25/71110/123 15000 230/266 550 1320 3160 1 B* -50/70145 10000 230/266 550 1415 3880 1 A* -25/70145 11500 275/320 650 1530/1740 3880/4600 1 B* -50/70170 10000 325/370 750 1740/1940 4600/5315 1 B* -50/70220/250 9000 460/525 1050 2300/2440 6510/6990 1 B* -50/70300/330 7000 460/510 1050 3075/3495 7760/9200 2 B* -50/70362 5000 510/785 1175/1550 3495 9200 2 B* -50/70420 4500 630/680 1425 3895 10630 2 B* -50/70500/550 4500 680/900 1550/1800 4895 13980 2 B* -50/70750 3000 1150 2250 7350 20970 3 B* -50/70* See examples of two design types on page 13Other values on requestTechnical specifications11Speciality CapacitorsMaxwell Technologies SA – CONDIS® HV CapacitorsOther values on requestCapacitance from 150pF to 500nFNominal voltage Un from 20kV to 1000kVTest voltage 1.2 x Un (or as requested)PD level < 1.2 pCFor laboratoryapplicationsHV Capacitors can be used inthe laboratory as a:? Coupling capacitor for PDmeasurement? HV divider for 50Hz voltagemeasurement? HV RC divider for impulsevoltage measurement? Capacitive load for SeriesResonance installation? Capacitive load for DC installation? Other applicationsFor specialapplicationsSpeciality HV Capacitors canbe used as a:? Coupling capacitor for on-sitePD measurement? Coupling capacitor for generatorcircuit breaker? Other applicationsTechnical specifications12CONDIS® TechnologyMaxwell applies CONDOR (CDOR),the company’s latest technologicaldevelopment, using aluminium foilcapacitors with polypropylene-paper mixed dielectric,impregnated with synthetic oil.Within the high voltage capacitorsover 100 flat windings areconnected in series. Key elementof Maxwell’s proprietary CDORtechnology is the automatedstacking and series connection ofthe flat windings through weldedconnections between the individualwindings. This allows thesuppression of aluminiumconnections and manual solderingexternal to the windings.The CDOR technology offers thefollowing advantages:? Lower weight? shorter lead-time? higher quality and reliability? less variation of the electricalperformance? high temperature stability? small size of active partsresulting in lower capacitor cost? superior integration into thedesigns of the customerCDOR (CONDOR) CDCT CDHTMaterial Aluminium foil without Aluminium foil Aluminium foilmanual solderingDielectric Polypropylene-paper Polypropylene-paper Paper dielectricdilectric dielectricConnection Welding on fully Contact points Contact pointsautomated winding soldered solderedand assembly linesLoss factor at Un = 20.10-4 = 20.10-4 = 50.10-4(tan d)Basic winding TechnologiesAutomated windingand assembly line Advanced drying installations Impregnation13Design DetailsMaxwell Technologies SA – CONDIS® HV CapacitorsGrading andCouplingCapacitorsCapacite VoltageDividersFlange Fixation Total Adiam. length length [mm]d,[mm] L2,[mm] L tot210 L+64…90 L+150 115230 L+64…120 L+180 130255 L+64…134 L+194 140Flange Fixation Total Adiam. length length [mm]d,[mm] L2,[mm] L tot160 L+64…90 L+127 78200 L+64…120 L+150 108Porcelain InsulatorComposite InsulatorType A - Example for CVD 72.5 kVType B - Example for CVD 362 kV14Technical Overviewof CONDIS® TechnologyCapacitance range CN: standard types from ~ 150 pF – 10 nFhigher capacitance on requestTolerance on CN: +/-5% or +/-2%other tolerances on requestOperating voltage Un: up to 800 kVhigher voltage on requestLoss factor (tan d): < 20x10-4 at 20°C, 50 Hz;< 50x10-4 for CDHTPartial discharge level: < 5 pClower levels on requestAmbient temperature during operationIndoor and GIS: -40°C to +87.5°COutdoor: -55°C to +75°CStorage temperature:Indoor and GIS: -55°C to +90°COutdoor: -55°C to +75°CInductance: typically 1 nH per mm lengthLifetime expectancy: 20-30 yearsImpregnation oil: Blend of benzyltoluene (BT) anddibenzyltoluene (DBT)Guaranteed no PCB contentInstallation: in any positionMax. height above zero allowed: 1000 mother heights on request15Maxwell Technologies SA – CONDIS® HV CapacitorsLoss factor (tan d) behaviourCapacitance behaviourLoss factor (tan d)versus Voltage0 0.5 1 1.5U/UNcdhtcdor + cdct2 2.550454035302520151050(typicalcurveatUN)Tgd10-4cdhtcdor + cdct-601.051.041.031.021.011.00.99.98.97.96.95-40 -20temperature (oC)(typicalcurve)C/CN0 20 40 60 80 0 0.5 1 1.5U/UN2 2.51.0061.0041.0021.998.996(typicalcurve)C/CNcdhtcdor + cdct-6050454035302520151050-40 -20temperature (oC)(typicalcurveatUN)Tgd10-40 20 40 60 80Loss factor (tan d)versus TemperatureCapacitanceversus TemperatureCapacitanceversus Voltage16Type Test OverviewThe type test performed byMaxwell Technologies SA cover orexceed the most severe conditionstaken from all availableinternational and customer specificstandards. We therefore cover allcustomers’ specifications andestablish a new yardstick regardingquality and reliability.The available test reports are listedbelow:Group 1: Outdoor capacitors, porcelain insulatorsRE 12.0187 Electrical type tests, full-size capacitorsSTC 95.002 Mechanical type test, full size capacitorsRE 12.0107 Tightness tests (seal)RE 12.0108 Pressure-temperature tests (endurance)RE 12.0144 Corrosion testGroup 2: Outdoor capacitors, composite insulatorsRE 12.0181 Electrical type tests, full-size capacitorsSTC 95.024 Shock tests, full-size capacitorsGroup 3: Indoor and GIS capacitorsRE 12.0182 Electrical type tests, full-size capacitorsRE 12.0186 Electrical type tests, full-size capacitorsSTC 93.013 Mechanical type tests, full-size capacitorsRE 12.0109 Tightness tests, full-size capacitorsRE 12.0110 Pressure-temperature tests (endurance)RE 12.0112 SF6-PenetrationGroup 4: Tests valid for group 1, 2 and 3RE 12.0111 Mechanical behaviour of the internal partRE 12.0106 Electrical fatigue testsRE 12.0115 DC discharge testGroup 5: Outdoor Capacitor Voltage DividerRE 12.0182 Electrical type tests, full-size capacitorsRE 12.0183 Electrical type tests, full-size capacitorsRE 12.0188 HF-capacitance and series resistance, capacitancestabilityRE 12.0189 HF-capacitance and series resistance, capacitancestability17Maxwell Technologies SA – CONDIS® HV CapacitorsMaxwell’s tests are conform to the followinginternational standards:Routine testprogramInternationalstandards0,1xUnCapacitytan deltaCapacitytan deltaCapacitytan deltaPartialDischargesPartialDischargesVoltageTest 72sUnUDP UDPUtestUnVoltageMeasurement / TestAs part of our quality process, allCONDIS® capacitors are individuallytested as shown in the graphabove.The capacitance measurement at0.1 x nominal voltage and atnominal voltage ensures that noelement has a breakdown duringthe first voltage application.The partial discharge measurementensures that the capacitor has nofabrication defect which coulddestroy the capacitor. The differentvoltage tests eliminate the risk offailure of the capacitor during itsoperation. All tests are doneaccording to IEC and ANSIstandards.IEC 60060: High voltage test techniqueIEC 60068: Environmental testingIEC 60071: Insulation co-ordinationIEC 62155: Tests on hollow insulators for usein electrical equipmentIEC 60270: Partial discharge measurementsIEC 60358: Coupling capacitors and capacitordividersANSI C93.1: Power-line carrier couplingcapacitors and coupling capacitorvoltage transformersTesting according to other standardsare possible on request.18CertificationQuality andEnvironmentA reputation for high quality is keyto Maxwell’s future. Therefore, thecompany invests heavily in theconstant improvement to its entireorganization. The brand nameCONDIS® has thus become asynonymous for highest quality forthe major manufacturer of circuitbreakers worldwide.19Inquiry Form (can be downloaded on our website www.maxwell.com)Maxwell Technologies SA – CONDIS® HV CapacitorsMaxwell Technologies SACONDIS® High Voltage CapacitorsCH-1728 RossensSwitzerlandTel: +41 (0) 26 411 85 00Fax: +41 (0) 26 411 85 05E-mail: hvsales@maxwell.comVisit us on the web at:www.maxwell.comWe reserve the right to modify thisspecification at any time without priornotice and without necessarily revisingthis document.edition 02/10MORE POWER.MORE ENERGY.MORE IDEAS.TM