保护继电器和系统

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ECAD 模型
777-P2
777-P2力特 (Littelfuse)

3-PHASE OLR/200-480V/2-800FLA+

30+
¥5918.4000
20+
¥6165.0000
数量
48 现货可以立即发货发货地: 深圳

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1SVR550871R9500
1SVR550871R9500ABB Control

Phase Voltage Monitor

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PVCL-400-AR-5
PVCL-400-AR-5R-K Electronics, Inc.

3 VOLTAGE MON440/480VAC 3 DPDT 5

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WUV-28DC

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1820DBX

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1820DDBX

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250-14XAC

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25-060-22X

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255X

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3-1618074-1

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3-1618103-6

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3-1618107-9

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721TDX

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6-1618071-2

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6-1618071-6

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6-1618082-6

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6-1618107-3

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6-1618107-6

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6-1618112-3

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710TDX

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710X

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731TDX

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56192
56192施耐德电气(Schneider Electric)

EARTHLEAKAGE RELAY RH99M WITH AU

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723X

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1618059-4

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1618062-3

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1618061-6

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1618062-4

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1618065-9

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1618113-4

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1618069-2

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1618074-8

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1618071-7

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1618082-4

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1618082-7

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1618082-8

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1618085-3

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1618090-9

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1618092-4

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1618095-8

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1618100-5

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1618100-6

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1618100-7

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1618103-6

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1618104-5

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1618104-7

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1618105-8

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1618107-5

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1618107-6

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1618107-8

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关于保护继电器和系统

保护继电器是工业系统中不可或缺的组件,用于检测和响应异常操作条件,防止设备损坏并确保人员安全。这些继电器不断监视系统是否存在与正常工作参数有偏差的情况,如果发现问题,会发出警报或断开故障设备与网络的连接,以防止潜在的危险。 电弧闪络检测:电弧闪络检测继电器用于监控电气活动,并在电气系统中检测到危险的电弧故障。这些继电器可以快速识别电弧闪络事件,并触发系统关断以防止进一步损坏。 温度监测:温度监测继电器用于检测电气设备(如电动机和变压器)的过热情况。这些继电器可以实时感知温度变化,并在设备受损之前采取纠正措施。 接地故障检测:接地故障检测继电器用于检测电气设备接地系统中的故障,以防止电击事故并减少设备损坏。 过流保护:过流保护继电器设计用于检测电气系统中的过大电流流动,如短路或过载。这些设备可以快速切断受影响的电路,限制损坏并防止系统其他部分的干扰。 过电压保护:过电压保护继电器用于检测和防护电气系统中的电压突变或尖峰,以防止对敏感设备的损害并降低电火灾的风险。 逆功率流动保护:逆功率流动保护继电器用于发电系统中,以检测并防止功率逆流到发电机中,保护发电机免受潜在的损坏,并提高系统稳定性。 过频和欠频保护:过频和欠频保护继电器用于检测电气系统中频率偏离正常水平的情况,如负荷拒载或发电机故障引起的偏差。这些继电器可以采取纠正措施,恢复系统至正常工作频率。 失相、顺序或不平衡保护:失相、顺序或不平衡保护继电器用于检测和防止由失相、顺序偏差或电压不平衡引起的电气系统故障,以保护设备免受损坏,并降低电气危险的风险。 总而言之,保护继电器是工业系统中关键的组成部分,用于检测和响应异常操作条件,防止设备损坏并确保人员安全。这些继电器采用了多种检测功能,包括电弧闪络、温度监测、接地故障、过流、过电压、逆功率流动、过频、欠频以及失相、顺序或不平衡保护。通过不断监测系统是否存在与正常工作参数有偏差的情况,这些继电器促进了工业系统的高效可靠运行,最终支持各种工业机械设备的性能和功能。

Audio ProductsAccessoriesAlarms, Buzzers, and SirensAmplifiersBuzzer Elements, Piezo BendersMicrophonesSpeakersCable AssembliesBarrel Connector CablesBarrel Audio CablesBarrel Power CablesBetween Series Adapter CablesCircular Cable AssembliesCoaxial Cables (RF)D-Shaped, Centronics CablesD-Sub CablesFiber Optic CablesFirewire Cables (IEEE 1394)Flat Flex Jumpers, Cables (FFC, FPC)Flat Flex Ribbon Jumpers, CablesJumper Wires, Pre-Crimped LeadsLGH CablesModular CablesPluggable CablesPower, Line Cables and Extension CordsRectangular Cable AssembliesSmart CablesSolid State Lighting CablesSpecialized Cable AssembliesUSB CablesVideo Cables (DVI, HDMI)CapacitorsAccessoriesAluminum - Polymer CapacitorsAluminum Electrolytic CapacitorsCapacitor Networks, ArraysCeramic CapacitorsElectric Double Layer Capacitors (EDLC), SupercapacitorsFilm CapacitorsMica and PTFE CapacitorsNiobium Oxide CapacitorsSilicon CapacitorsTantalum - Polymer CapacitorsTantalum CapacitorsThin Film CapacitorsTrimmers, Variable CapacitorsCircuit ProtectionCircuit BreakersCircuit Protection AccessoriesElectrical, Specialty FusesFuseholdersFusesGas Discharge Tube Arresters (GDT)Ground Fault Circuit Interrupter (GFCI)Inrush Current Limiters (ICL)Lighting ProtectionPTC Resettable FusesSurge Suppression ICsThermal Cutoffs (Thermal Fuses)Transient Voltage Suppressors (TVS)Mixed TechnologySurge Protection Devices (SPDs)TVS DiodesThyristorsVaristors, MOVsConnectors, InterconnectsAC Power ConnectorsPlugs and ReceptaclesPower Entry Connector AccessoriesPower Entry Modules (PEM)Backplane ConnectorsARINCARINC InsertsBackplane Connector AccessoriesBackplane Connector ContactsBackplane Connector HousingsDIN 41612Hard Metric, StandardSpecializedBanana and Tip ConnectorsBanana and Tip Connector AccessoriesBanana and Tip Connector AdaptersBinding PostsJacks, PlugsBarrel ConnectorsAudio ConnectorsBarrel Connector AccessoriesBarrel Connector AdaptersPower ConnectorsBlade Type Power ConnectorsBlade Type Power Connector AccessoriesBlade Type Power Connector AssembliesBlade Type Power Connector ContactsBlade Type Power Connector HousingsCard Edge ConnectorsCard Edge Connector AccessoriesCard Edge Connector AdaptersCard Edge Connector ContactsCard Edge Connector HousingsEdgeboard ConnectorsCircular ConnectorsBackshells and Cable ClampsCircular Connector AccessoriesCircular Connector AdaptersCircular Connector AssembliesCircular Connector ContactsCircular Connector HousingsCoaxial Connectors (RF)Coaxial Connector (RF) AccessoriesCoaxial Connector (RF) AdaptersCoaxial Connector (RF) AssembliesCoaxial Connector (RF) ContactsCoaxial Connector (RF) TerminatorsContactsContacts, Spring Loaded (Pogo Pins), and PressureLeadframeMulti PurposeD-Sub, D-Shaped ConnectorsCentronics ConnectorsD-Sub Connector AssembliesD-Sub, D-Shaped Connector AccessoriesD-Sub, D-Shaped Connector AdaptersD-Sub, D-Shaped Connector Backshells, HoodsD-Sub, D-Shaped Connector ContactsD-Sub, D-Shaped Connector HousingsD-Sub, D-Shaped Connector JackscrewsD-Sub, D-Shaped Connector TerminatorsFFC, FPC (Flat Flexible) ConnectorsFFC, FPC (Flat Flexible) Connector AccessoriesFFC, FPC (Flat Flexible) Connector AssembliesFFC, FPC (Flat Flexible) Connector ContactsFFC, FPC (Flat Flexible) Connector HousingsFiber Optic ConnectorsFiber Optic Connector AccessoriesFiber Optic Connector AdaptersFiber Optic Connector AssembliesFiber Optic Connector HousingsHeavy Duty ConnectorsHeavy Duty Connector AccessoriesHeavy Duty Connector AssembliesHeavy Duty Connector ContactsHeavy Duty Connector FramesHeavy Duty Connector Housings, Hoods, BasesHeavy Duty Connector Inserts, ModulesKeystone ConnectorsKeystone Connector AccessoriesKeystone Faceplates, FramesKeystone InsertsLGH ConnectorsLugsArrays, Edge Type, Mezzanine (Board to Board)Board In, Direct Wire to BoardBoard Spacers, Stackers (Board to Board)Free Hanging, Panel MountHeaders, Male PinsHeaders, Receptacles, Female SocketsHeaders, Specialty PinRectangular Connector AccessoriesRectangular Connector AdaptersRectangular Connector ContactsRectangular Connector HousingsSpring LoadedMemory ConnectorsInline Module SocketsMemory Connector AccessoriesPC Card SocketsPC Cards - 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