第2章 方向电流保护(old edition)
- 格式:ppt
- 大小:2.04 MB
- 文档页数:28
方向电流保护的应用特点
方向电流保护是一种用于保护电气设备的保护装置,它主要用于检测和阻止电流的逆向流动。
以下是方向电流保护的应用特点:
1. 防止电能盗窃:方向电流保护器可以阻止电能由装置的负载侧逆向流向电源侧,从而防止非法的电能盗窃行为。
2. 防止设备损坏:逆向电流可能会导致电气设备的损坏,方向电流保护器可以及时检测到逆向电流并切断电路,保护设备免受损坏。
3. 提高电网稳定性:逆向电流的存在可能会导致电网的不稳定性,方向电流保护器可以帮助维护电网的稳定运行。
4. 增强电路安全性:方向电流保护器能够检测到逆向电流,并立即切断电路,确保电路安全,减少电路故障的风险。
5. 降低能源浪费:逆向电流的流动会导致电能浪费,方向电流保护器可以避免逆向电流的产生,从而减少能源的浪费。
总之,方向电流保护具有防止电能盗窃、保护设备、提高电网稳定性、增强电路安全性以及降低能源浪费等重要应用特点。
iPACS系列保护现场方向保护调试大纲方向保护简介:Ipacs5711过流保护:以过流一段A相为例方向元件的灵敏角为45度,采用90度接线方式。
方向元件和电流元件接成按相启动方式。
方向元件带有记忆功能,可消除近处三相短路时方向元件的死区。
1)整定定值控制字中“过流Ⅰ段投入”置“1”,“过流Ⅰ段经复压闭锁”置“0”,“过流Ⅰ段经方向闭锁”置“1”,软压板中“过流Ⅰ段投入”置“1”。
模拟正方向相间故障,使得电压满足复压定值,电流满足电流定值,电流Ia超前线电压Ubc的夹角在-45~+135度之间。
此时过流Ⅰ段即经整定延时跳闸135o动作区Ia45oU bc-45o以电压为基准在继保测试仪上加量:Ua=Uc=Ib=Ic=0 角度为0oUb=57V 角度为0oIa=6A (过流保护定值为5A),角度从-46度开始加量到136度截止。
如上图所示,动作区为-45o~+135oB、C相方向保护做法一样。
知识补充:过流保护功率方向继电器90o接线如下表所示,保护处于送电侧,系统正常运行,cosφ=1时,3个功率方向继电器的测量的ψ角度均为90o,该接线因此而命名。
功率方向继电器电流电压KWa ìa ùbcKWb ìb ùcaKWc ìc ùab按相启动方式:A、B、C三相电流继电器与功率方向继电器先串后并KAa KWaKAb KWbKAc KWcIpacs5742过流保护:以过流一段A相为例方向元件采用正序电压极化,方向元件和电流元件采用按相起动方式。
方向元件带有记忆功能以消除近处三相短路时方向元件的死区。
方向元件灵敏角为45 度或225 度,可以通过控制字整定选择。
接入TA 的正极性端在母线侧。
(1)投入“投复压过流”硬压板(2)投入“过流Ⅰ段投入”软压板(3)定值中“过流Ⅰ段投入”控制字置“1”,“复压闭锁过流Ⅰ段”控制字置“0”,“方向闭锁过流Ⅰ段”控制字置“1”,“过流保护方向指向”,方向元件灵敏角为225 度;电流超前电压的夹角在135~315度之间。
Eaton PDG23G0150TFFJEaton Power Defense molded case circuit breaker, Globally Rated, Frame 2, Three Pole, 150A, 35kA/480V, T-M (Fxd-Fxd) TU, Standard Line and Load (PDG2X3TA225)Eaton Power Defense molded case circuit breakerPDG23G0150TFFJ 7866792372128 in6.5 in6 in 4.9 lb Eaton Selling Policy 25-000, one (1) year from the date of installation of theProduct or eighteen (18) months from thedate of shipment of the Product,whichever occurs first.RoHS Compliant CSACCC MarkedUL 489IEC 60947-2Product NameCatalog Number UPCProduct Length/Depth Product Height Product Width Product Weight WarrantyCompliancesCertifications35 kAIC at 480 Vac2600150 AThree-pole600 VPD2 Global20 kAIC Icu/ 15/13 kAIC Ics/ 42 kAIC Icm @525V South Africa (IEC)18 kAIC @600V (UL/CSA)35 kAIC @480V (UL)8 kAIC Icu/ 4 kAIC Ics/ 16.8 kAIC Icm @690V (IEC)30 kAIC Icu/ 22.5 kAIC Ics/ 63 kAIC Icm @440V (IEC)10 kAIC Icu @250 Vdc55 kAIC Icu/ 55 kAIC Ics/ 121 kAIC Icm @240V (IEC)10 kAIC Icu @125 Vdc25 kAIC Icu/ 20 kAIC Ics/ 52.5 kAIC Icm @480V Brazil (IEC) 36 kAIC Icu/ 36 kAIC Ics/ 75.6 kAIC Icm @380-415V (IEC)65 kAIC @240V (UL)ThermomagneticClass AComplete breakerStandard Line and Load600 Vac Eaton Power Defense MCCB PDG23G0150TFFJ 3D drawing Consulting application guide - molded case circuit breakersPower Defense technical selling bookletPower Defense molded case circuit breaker selection posterPower Defense brochurePower Defense molded case circuit breakers - Frame 2 product aid Molded case circuit breakers catalogPDG4 CB reportPDG4 CCC certificationEU Declaration of Conformity - Power Defense molded case circuit breakersPower Defense Declaration concerning California’s Proposition 65PDG2 CB reportPower Defense Frame 2 Direct Rotary Handle Assy With Interlock Version Instructions (IL012138EN).pdfPower Defense Frame 2 screw terminal_end cap kit, 225A, 3 pole instructions - IL012258EN H01Power Defense Frame 2 tunnel terminal (aluminum), 150A, 3 pole instructions - IL012238EN H03Power Defense Frame 2 multi wire connector kit -PDG2X3(2)(4)TA2253W instructions - IL012243EN H01Power Defense Frame 2/3/4/5/6 voltage neutral sensor module wiring instructions – IL012316ENPower Defense Frame 2 handle mech direct rotary handle instructions - IL012134ENPower Defense Frame 2 handle mech variable depth rotary handle instructions - IL012136ENPower Defense Frame 2 PDG2 and PDC(E)9 breaker instructions -IL012106ENPower Defense Frame 2 multi wire connector kit -PDG2X3(2)(4)TA2256W instructions - IL012242EN H01Power Defense Frame 2 tunnel terminal (aluminum), 100A, 3 poleInterrupt ratingFrameRated operation voltage (Ue) at AC - max Amperage RatingNumber of polesVoltage rating - maxCircuit breaker typeInterrupt rating rangeSwitch off techniqueClassCircuit breaker frame typeTerminalsVoltage rating 3D CAD drawing package Application notes BrochuresCatalogsCertification reports Installation instructionsT-M (Fxd-Fxd) TU instructions - IL012237EN H03Power Defense Frame 2 box terminal (aluminum), 225A, 3 pole instructions - IL012235EN H03Power Defense Frame 2 box terminal (steel), 100A, 3 pole instructions - IL012234EN H03Power Defense Frame 1-2-3-4 IP door barrier assembly instructions -IL012278ENPower Defense Frame 2 locking devices and handle block instructions - IL012149ENPower Defense Frame 2 terminal kit - PDG2X3(2)(4)TA150RF instructions - IL012244EN H01Power Defense Frame 2 terminal kit - PDG2X3(2)(4)TA225RF instructions - IL012245EN H01Power Defense Frame 2 tunnel terminal kits - PDG2X1TA225K instructions- IL012239EN H01Power Defense Frame 1 IEC and Frame 2 Rotary Mechanism with NFPA Handle Attachment Instructions (IL012260EN).pdfPower Defense Frame 2 tunnel terminal (aluminum), 50A, 3 pole instructions - IL012236EN H03Power Defense Frame 2 global terminal shield, 3 pole - IL012330EN Power Defense Frame 2 clamp terminal (steel), 20A, 3 pole instructions - IL012246EN H03Power Defense Frame 2 shunt trip UVR instructions - IL012130ENPower Defense Frame 2 Handle Mech Variable Depth Rotary Handle Animated Instructions.rhPower Defense Frame 2 Locking Devices and Handle Block Animated Instructions.pdf.rhPower Defense Frame 2 TMTU Aux, Alarm, ST and UVR Animated Instructions.rhPower Defense Frame 2 Bell Alarm with PXR Animated Instructions.pdf.rh Power Defense Frame 2 withTMTU, Shunt Trip_UVR Animated Instructions.rhPower Defense Frame 3 Variable Depth Rotary Handle Mechanism Installation How-To VideoPower Defense Frame 2 Variable Depth Rotary Handle Mechanism Installation How-To VideoPower Defense Frame 2 Aux, Alarm, Shunt Trip, and UVR How-To Video Power Defense Frame 2 Direct Rotary Handle Mechanism Installation How-To VideoEaton Power Defense for superior arc flash safetyTrip TypeInstallation videosMultimediaEaton Corporation plc Eaton House30 Pembroke Road Dublin 4, Ireland © 2023 Eaton. All Rights Reserved. Eaton is a registered trademark.All other trademarks areproperty of their respectiveowners./socialmediaPower Defense BreakersPower Defense molded case circuit breakers Power Defense Frame 5 Trip Unit How-To Video Power Defense Frame 6 Trip Unit How-To Video Eaton Specification Sheet - PDG23G0150TFFJ Power Defense time current curve Frame 2 - PD2Selling Policy 25-000 - Distribution and Control Products and Services Molded case and low-voltage power circuit breaker health Single and double break MCCB performance revisited Making a better machineIntelligent circuit protection yields space savings Safer by design: arc energy reduction techniques Molded case and low-voltage breaker healthSpecifications and datasheetsTime/current curvesWarranty guidesWhite papers。
Eaton SPS8503MEAXX2CEaton Power Defense SB, Double Standard, 5000 A, 85 kA, 3-Pole, Drawout w/ MR2, PXR20LSIG, 8503MEAXX2CGeneral specificationsEaton Magnum low voltage power circuitbreakerSPS8503MEAXX2C78668976554516.3 in16.8 in31.1 in237 lbCE Marked NEMA Compliant CCC Marked SABA Listed UL ListedCSA CertifiedKEMA CertifiedABS CertifiedLloyd's Register Certified ANSIDNV GL CertifiedProduct Name Catalog NumberUPCProduct Length/Depth Product Height Product Width Product Weight Compliances Certifications5000 A UL 891Double standard Three-pole Power Defense SBMR2UL 891Double standard Magnum PXR20Drawout Three-pole5000 A 600 VACDrawout 85 kA85 kA5000 A5000 A 600 VACZone selective interlocking application paper Magnum circuit breakers with Power Xpert Release trip units product aid Amperage Rating Application FrameNumber of poles TypeAccessories Application FrameSeries Trip Type Mounting Method Number of poles Rated uninterrupted current (Iu)Voltage rating Mounting Method Interrupt rating Interrupt rating Amperage Rating Rated uninterrupted current (Iu)Voltage rating Application notesBrochuresCatalogsEaton Corporation plc Eaton House30 Pembroke Road Dublin 4, Ireland © 2023 Eaton. All Rights Reserved. Eaton is a registered trademark.All other trademarks areproperty of their respectiveowners./socialmediaSelevctive coordination application paper - IA0120000E3Magnum PXR and PD-SB standard and narrow frame UL Certificate of ComplianceMagnum PXR and PD-SB double and double narrow frame UL Certificate of ComplianceMagnum PXR low voltage power circuit breakers user manual Microsoft Word - Power Xpert Protection Manager Quick Start Guide.docxPower Xpert Release trip unit for Magnum PXR circuit breakers PXR 20/25 user manualPower Xpert Protection Manager x64 22.6 1 Power Xpert Protection Manager x32 22.06 1 Eaton Specification Sheet - SPS8503MEAXX2C Low voltage circuit breakers guide spec Magnum PXR 20/25 electronic trip units time current curves Cyber security white paperMolded case and low-voltage power circuit breaker health Safer by design: arc energy reduction techniquesCertification reportsManuals and user guidesSoftware, firmware, and applications Specifications and datasheetsTime/current curvesWhite papers。